Techniques

3D weaving

Posted On : 23 Jan,2018

Near net preforming and 3D textiles designs and engineers the preform to meet the functional and performance requirements of the end product. Embracing the formative...

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3D-Purles - Incompressible flow simulations

Posted On : 30 Nov,2017

Highlights    Extensive research in the area of turbulence and transition for incompressible flows The in-house incompressible flow solution code 3D-PURLES (3D...

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Acoustic Emission NDE

Posted On : 11 Dec,2017

Acoustic Emission is the phenomenon of generation of transient elastic waves due to rapid release of strain energy caused by structural alterations within a material. It...

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Active Radar Cross Section (RCS) Reduction

Posted On : 29 Nov,2017

The active radar cross section reduction (RCSR) relates to the real-time RCS reduction and control of aerospace structures. The antenna array mounted over a platform...

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Adaptive Array Processing towards Radiation Pattern Synthesis and Probe Suppression

Posted On : 29 Nov,2017

The synthesis of the radiation pattern of antenna array mounted on the platform (planar/non-planar) has been done using efficient adaptive algorithm. Various adaptive...

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Aeroacoustics

Posted On : 12 Oct,2017

  Jet noise continues to be the dominant component of community noise during the takeoff segment, even for modern commercial aircraft. Aeroacoustics of high speed jets...

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Aeroelastic testing

Posted On : 27 Nov,2017

Special techniques have been developed to carry out aerodynamic testing to investigate phenomena such as flutter and divergence in 1.2m tunnel. Flutter refers to dynamic...

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Aerospace Weather Research

Posted On : 30 Nov,2017

Aerospace Weather Research Group     Following the closure of the Flosolver Unit, persons involved in  numerical modelling were assigned to the CTFD Division. Since...

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Air - Intake Studies

Posted On : 27 Nov,2017

Tests on specially-designed models of air intakes of aircraft and missiles are necessary to study their design and off-design performance. The models feature extensive...

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Aircraft system modeling and simulation

Posted On : 24 Nov,2017

An aircraft simulation model consists of several sub system models for 6 DOF flight dynamics, engine, fuel, sensors, landing gear, hydraulic and electrical systems.  ...

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Airdata calibration and accuracy determination

Posted On : 24 Nov,2017

An Air Data System (ADS) plays a key role in stabilization, control and improving performance of modern fighter aircraft. Airdata sensors installed on aircraft generally...

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Anodization

Posted On : 10 Nov,2017

Anodization is a simple electrochemical process in which thicker oxide layers (2 to 30 µm) can be obtained on aluminium and its alloys in a suitable electrolyte bath by...

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Aqueous slurry polymerization technique

Posted On : 20 Nov,2017

Aqueous slurry polymerization is the most widely adopted techniques/process for acrylic fiber manufacturing. Water is used here as a continuous phase of the system. The...

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autoclave

Posted On : 05 Sep,2017

An autoclave is a pressure chamber used to carry out industrial processes requiring elevated temperature and pressure different from ambient air pressure. Autoclaves are...

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Autoclave molding

Posted On : 11 Dec,2017

Autoclave molding technique is an advanced composite manufacturing process.    It is widely used in the aerospace industry to fabricate high strength / weight ratio...

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Autoclave Moulding (Pressure Vessel Moulding)

Posted On : 23 Jan,2018

Maximizing performance of thermoset composite materials requires, amongst other things, an increase in the fiber to resin ratio and removal of air pockets or voids. This...

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Automatic Balance Calibration System (ABCS)

Posted On : 27 Nov,2017

    A precise and accurate measurement of aerodynamic forces and moments in the wind tunnel is possible only if the strain gauge balances are calibrated frequently,...

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Bearing health condition monitoring

Posted On : 24 Nov,2017

Condition monitoring is used to dynamically monitor various engine parameters and helps in detecting the faults before a catastrophic failure occurs. Condition...

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Captive Trajectory System (CTS)

Posted On : 27 Nov,2017

The CTS is a sophisticated computer – controlled electro-mechanical system for wind tunnel simulation of the trajectory of a store released from a parent aircraft. DC...

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Carbonization and graphitization technique

Posted On : 20 Nov,2017

The carbonization processes are preceded by thermo-oxidative stabilization in the heat treatment line for the continuous conversion of acrylic precursor fibers into...

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Cathodic-arc evaporation

Posted On : 10 Nov,2017

Cathodic arc deposition or Arc-PVD is a physical vapor deposition technique in which an electric arc is used to vaporize material from a cathode target. The vaporized...

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Ceramic Matrix Composites through Polymer Impregnation Pyrolysis

Posted On : 21 Nov,2017

Carbon fibre (Cf) reinforced ceramic matrix composites (CMCs) are attractive for various applications due to low density, high specific strength, and good...

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Co-precipitation

Posted On : 13 Nov,2017

Co-precipitation is a simple, economical and industrially viable technique that can be used for the synthesis of technologically important oxide materials. The steps...

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Cold Gas Spraying (CGS)

Posted On : 10 Nov,2017

CGS process is used to obtain coatings of soft and ductile metals such as copper, nickel, aluminium, zinc, tin and their alloys and stainless steel. Homogeneous coatings...

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Common Frame Work Development

Posted On : 30 Nov,2017

CFD code development is a niche area as opposed to employing CFD codes for applications and is hence, usually confined to academic institutes, research organizations and...

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COMPOSITIONAL ANALYSIS

Posted On : 20 Nov,2017

Compositional analysis methods can be used to determine the components of an unknown material, to confirm the identity of a suspect material and to identify differences...

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Detailed Design

Posted On : 11 Dec,2017

Detail Design acts as a focal point and provides comprehensive solutions for the product development from conceptual-to-component assembly. It has exhaustive...

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Development of Thermoplastic Composites for Aerospace Applications

Posted On : 11 Dec,2017

The major limitations of thermoset polymers are their inability to be re-melted or recycled, shorter shelf-life, higher storage costs, and longer curing times thereby...

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Dry jet wet fiber spinning technique

Posted On : 20 Nov,2017

    The dry jet wet spinning is a combination of both wet and dry spinning techniques for fiber formation. In this technique, the spinneret is located above the spin...

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EKF based algorithm for store separation trajectory estimation of LCA

Posted On : 24 Nov,2017

Trajectory of a separated store from LCA has to be estimated with its standalone inertial measurement unit (IMU) sensor data. It is proposed that LCA flight data (IN-GPS...

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EKF based algorithms for attitude and Heading estimation of UAV

Posted On : 24 Nov,2017

Extended Kalman filter (EKF) solution for attitude and heading estimation was proposed with code phase GPS measurements aiding the micro electro mechanical systems...

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EKF based algorithms for INS/GPS fusion for UAVs

Posted On : 24 Nov,2017

The design of an EKF is addressed for the purpose of estimating the position, velocity, attitude and heading of an Aircraft. While, estimating the attitude and heading...

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Electro polishing

Posted On : 13 Nov,2017

Electropolishing is reverse of electrodeposition process in which material is removed instead of deposition from the component by means of electrochemical process. By...

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Electro-Mechanical actuator health monitoring

Posted On : 24 Nov,2017

Off late, aircraft uses a combination of pneumatic, hydraulic, and electric systems. Future aircrafts will have electrical system and electrically powered equipment’s....

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Electrodeposition

Posted On : 13 Nov,2017

Electrodeposition process is based on the principle of Faraday’s law of electrolysis. It is a simple wet chemical process used to deposit variety of metals, alloys and...

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Electroless plating

Posted On : 13 Nov,2017

Electroless nickel plating (EN) is a simple auto-catalytic chemical reduction process for depositing metals, alloys and composites. In this process metal ions are...

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Electrospinning

Posted On : 13 Nov,2017

Electrospinning is an efficient and convenient process for the preparation of thin fibers with diameters ranging from tens of nanometer to several micrometers. By the...

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EM Design and Development of Radar Absorbing Structures (RAS)

Posted On : 29 Nov,2017

In present era, low-observability is one of the critical requirements in aerospace sector, especially related to defence. The stealth technology essentially relates to...

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EM Design and Performance Analysis of Planar Radomes

Posted On : 29 Nov,2017

The antenna array system of aerospace and naval platforms are exposed to extreme environment such as rain, hailstorms, snow, wind, extreme temperatures etc. It is,...

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EM Design of Low RCS Air intake Duct using HF Ray tracing Techniques in-conjunction with PSO

Posted On : 29 Nov,2017

Optimization techniques plays a key role almost all the engineering applications. Centre for electromagnetics has carried out the soft computing based design and...

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EM Performance Analysis of Airborne Radomes

Posted On : 29 Nov,2017

CSIR-NAL Bangalore has delivered several airborne radomes for various national programs during the past thirty years. CSIR-NAL team (comprising of CEM, MT, CSMST, STTD,...

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Empirical estimation of aero-data and performance parameters

Posted On : 24 Nov,2017

Based of theoretical concept MATLAB based scripts have been used for aero-data and performance parameters estimation. Tools like AAA and PACELAB also have been used for...

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Enhanced and Synthetic Vision System

Posted On : 24 Nov,2017

Development of Enhanced Synthetic Vision System (ESVS) for transport aircraft is one of the major activities initiated by Multi Sensor Data Fusion (MSDF) group of FMCD...

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Estimation of Impact location and severity using strain response

Posted On : 11 Dec,2017

Impact damages due to events such as tool drops, runway debris, hailstones etc. can reduce the load carrying capacity of composite structures. Often they result in...

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Fiber wet spinning technique

Posted On : 20 Nov,2017

    Wet spinning of fiber is a form of solution spinning where polymer powder is dissolved in a suitable solvent and the polymer solution is extruded through spinneret...

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Finite Difference Time Domain (FDTD) based Modelling for Aerospace Applications

Posted On : 29 Nov,2017

As mentioned above, the numerical methods such as MM-GSM, equivalent circuit, and TLTM methods are used for the analysis of FSS based radomes, RAS, and antennas. Apart...

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Flow Visualisation

Posted On : 27 Nov,2017

Colour and B/W schlieren & Shadowgraphy Surface flow visualisation using oil flow techniques Video and still photography High speed schlieren   1....

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Flush AirData System (FADS) Algorithms:

Posted On : 24 Nov,2017

Presently developing algorithms for FADS. The algorithm is proven on CFD data in a 6 DOF simulation platform.   Facilities where it can be used: all stealth aircraft...

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Force and moment Measurements

Posted On : 27 Nov,2017

Force and moment measurement is very essential at given speed range in order to aerodynamically characterize any flying vehicle. The three forces and three moments viz;...

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Forced oscillation technique

Posted On : 27 Nov,2017

A single - degree - of - freedom forced oscillation rig has been developed for measurements of dynamic stability derivatives. The rig features an electrodynamic shaker...

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Free oscillation techniques

Posted On : 27 Nov,2017

Initially, free oscillation technique was developed for measurement of pitch and yaw damping derivatives. The free oscillation rig featured a crossed-flexure pivot and a...

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Friction Stir Welding (FSW)

Posted On : 21 Nov,2017

The Materials Science Division (MSD) of CSIR - National Aerospace Laboratories has been carrying out work on Friction Stir Welding for the past three years. The Division...

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FSS Technology for Aerospace Applications

Posted On : 29 Nov,2017

Frequency selective surfaces (FSS) are widely used as spatial filter for the design of absorbers, radomes, dichroic plates, and reflector antennas in the microwave and...

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Geo-fencing and tagging

Posted On : 24 Nov,2017

Geo-location technique is developed in order to determine the location of the target geological coordinates from the image captured from the UAV onboard camera. Target...

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GRAVIMETRIC ANALYSIS

Posted On : 20 Nov,2017

Gravimetric analysis is a class of lab techniques used to determine the mass or concentration of a substance by measuring a change in mass. At CCFP this is used to...

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GridGeneration

Posted On : 30 Nov,2017

The accuracy of the CFD simulation results is directly linked to meshing. the better the mesh in quality, the more accurate results can be expected. It is a critical...

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Half Model Support System

Posted On : 27 Nov,2017

Side-wall mounted half model support system enables testing of larger size half-models to reduce scale effects and to increase accuracy of the results. The model can be...

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High Frequency Ray based Techniques for RCS Estimation of Electrically Large Aerospace Structures

Posted On : 29 Nov,2017

The upcoming national programs on fifth generation combat aircrafts either manned or unmanned, requires a low observable platform. In this context stealth...

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High Velocity Oxy Fuel (HVOF)

Posted On : 13 Nov,2017

HVOF is a high velocity and low temperature thermal spray process used for depositing dense metal, alloy, carbide and cermet coatings. The carbide coatings developed by...

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Hinge Moment Measurements

Posted On : 27 Nov,2017

Dedicated crossed-flexure-pivot balance for measurement of hinge-moment on control surface has been developed. These are specially designed to measure small hinge-moment...

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Hot-filament chemical vapor deposition

Posted On : 13 Nov,2017

Hot-filament chemical vapor deposition (HFCVD) is a simple and cost effective method which has been used to deposit a variety of materials. In the HFCVD technique, a...

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HUD Symbology development for regional transport aircraft

Posted On : 24 Nov,2017

Working towards indigenous development of advance avionics technologies namely Enhanced Vision System (EVS), Synthetic Vision System (SVS), combination of the two known...

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Hypersonics

Posted On : 30 Nov,2017

At CTFD, our group has been actively involved in the development of new tools for handling high speed flows to provide accurate and reliable results. In-house RANS code...

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Image registration and fusion

Posted On : 24 Nov,2017

Image registration is pre-request for image fusion. There are many techniques are available in open literature. Control point registration is the best and provides...

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IMPRANS

Posted On : 30 Nov,2017

IMPRANS (RANS Solver for Unsteady Compressible Flows) Implicit Finite volume nodal point scheme using structured boundary fitted grid. Dual time stepping  and Baldwin...

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Inclusion Detection in prepreg layup based fabrication process

Posted On : 11 Dec,2017

One of the major concerns during manufacturing process of composite parts using prepregs is the occurrence of accidental inclusions like release film, prepreg back up...

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Innovative Co-curing Process Development for Carbon-BMI Composites

Posted On : 11 Dec,2017

Most of the composite structures for the aircraft have been developed using carbon- epoxy prepreg material system, which can withstand maximum service temperature of...

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L1 adaptive control with applications to aerospace vehicles

Posted On : 24 Nov,2017

Longitudinal flight control system designed based on total energy control system (TECS) using ℒ1 adaptive control theory. The proposed composite control architecture...

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Layer-by-layer deposition

Posted On : 13 Nov,2017

The automated layer by layer deposition system is computer controlled and enables deposition of different coatings with customized dipping speed, withdrawal speed and...

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Linear Structural Analysis

Posted On : 11 Dec,2017

A linear analysis of any structure is generally performed when structure is expected to show linear behavior. Major aerospace structure components like wing, vertical...

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Magnetron sputtering (including ultra-high vacuum)

Posted On : 13 Nov,2017

Sputtering is a versatile physical vapor deposition process to fabricate a variety of metallic, oxide, nitride and carbide coatings. At SED, different types of...

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MECHANICAL PROPERTIES

Posted On : 21 Nov,2017

The mechanical properties of a material are those properties that involve a reaction to an applied load. Mechanical properties are also used to help classify and...

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Mesh Free Methods

Posted On : 30 Nov,2017

  Mesh free methods in CFD for aerodynamic simulation of flow past complex configurations   CTFD-NAL has developed indigenous capability to simulate flow past very...

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Microarc Oxidation (MAO) Facility

Posted On : 13 Nov,2017

Micro Arc Oxidation (MAO) or Plasma Electrolytic Oxidation (PEO) is an electrochemical oxidation process generally applied to Al, Mg and Ti.  Dense MAO coatings are...

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Mode Matching- Generalized Scattering Matrix (MM-GSM)

Posted On : 29 Nov,2017

Frequency selective surfaces (FSS) are widely used as spatial filter for the design of absorbers, radomes, dichroic plates, and reflector antennas in the microwave and...

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Model based design approach: MAV autopilot functionality design

Posted On : 24 Nov,2017

Model based design framework is getting popular in the aerospace sector for flight control applications. It supports the following concepts Providing a common design...

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Modeling and Simulation

Posted On : 24 Nov,2017

Modelling and simulation techniques are used in all the flight simulator facilities mentioned. Computationally efficient table look-up techniques for real-time...

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Modeling of airfield and airspace scenario pertaining to an airport, simulation of airport with realistic flight schedules

Posted On : 24 Nov,2017

The airfield scenario was modeled based on the airport layout information available in Jeppesen Maps.  Similarly, airspace scenario was modeled based on the air routes...

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Mouldless casting of ceramics (MCC)

Posted On : 21 Nov,2017

Materials Science Division, CSIR-NAL has developed a unique shaping method called Mouldless Casting for advanced ceramic materials to fabricate scaffold structures...

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Multi-sensor data fusion and filtering techniques

Posted On : 24 Nov,2017

Multi sensor data fusion group of FMCD has developed advanced multi sensor data fusion techniques and algorithms for processing and fusing data from multiple sources to...

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Multi-sensor data fusion techniques for Engine health monitoring

Posted On : 24 Nov,2017

An aircraft engine is the component of the propulsion system for an aircraft that generates mechanical power (thrust) that is used to move the aircraft through the air...

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Multizone oxidation technique

Posted On : 20 Nov,2017

The thermo-oxidative stabilization process is the first stage in the heat treatment line. The process is the rate limiting step in the entire heat treatment line, owing...

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Nano composites

Posted On : 11 Dec,2017

In recent years, tremendous research advances have been made in the scientific base for nano materials (e.g. CNT, CNF and Graphene), and this has enabled significant...

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Non - Linear Structural Analysis

Posted On : 11 Dec,2017

ACD is immensely involved in finite element solution techniques for providing solutions for wide range of static, dynamic, buckling, optimization and non-linear (both...

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Novel scheme for baseline Flight Controller Design

Posted On : 24 Nov,2017

 The flight controller is developed using Nonlinear Dynamic Inversion (NDI) in combination with time scale separation, static control allocation and integrator...

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NTAF

Posted On : 07 Sep,2017

The Network Test Automation Forum (NTAF) was created to promote the interoperability of commercial testing tools and test infrastructure for the data communications and...

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oil flow visualization

Posted On : 12 Oct,2017

Surface oil flow visualization is a technique used to capture the streak lines formation on the surface due to the shear force acting the discrete oil dots sprayed on...

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Open (Contact) moulding

Posted On : 23 Jan,2018

It is a process, which uses a rigid one-sided mould that imparts the surface finish to one side of the component. The thickness of the composite product is determined by...

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OPTICAL ANALYSIS

Posted On : 21 Nov,2017

The optical microscope, often referred to as light microscope, is a type of microscope which uses visible light and a system of lenses to magnify images of small...

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Optimization algorithms for MEMS IMU calibration

Posted On : 24 Nov,2017

Standard IEEE Calibration methodology and test procedure followed to calibrate MEMS IMU. The intent is to find out stochastic and deterministic errors in tri axial rate...

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Panel Method

Posted On : 30 Nov,2017

Methodology   Panel methods are among the most versatile and powerful tools developed in the last three / four decades for the aerodynamic analysis of complex...

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Parameter Estimation Techniques in time domain and frequency domain

Posted On : 24 Nov,2017

Output Error Method, Filter Error method, Extended Kalman Filter, Feed Forward Neural Networks and Discrete Fourier Transform methods for Identification of Aerodynamic...

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Particle Image Velocimetry

Posted On : 12 Oct,2017

1.Particle Image Velocimetry One of the serious limitations of the LDV technique is that it is a pointwise measurement. This in addition to the increased time required...

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Physiological signal processing for pilot workload assessment

Posted On : 24 Nov,2017

Aviation safety has been the primary focus in the industry. Aviation human factors are the main cause of aviation accidents. Effective features will be derived from the...

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Piezoceramic thin films and coatings

Posted On : 21 Nov,2017

Conformal Piezoceramic coating on Aerospace Grade Aluminum metal, Composite Structures and Silicon wafer has been successfully developed in the Materials Science...

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Plasma enhanced chemical vapor deposition (PECVD)

Posted On : 13 Nov,2017

It is a chemical vapor deposition process which uses plasma for thin film deposition. Thin films and coatings can be deposited from respective precursor chemical vapors...

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Plasma immersion ion implantation

Posted On : 13 Nov,2017

It is an ion implantation process that modifies the surfaces using RF plasma for enhancing tribological properties. Samples with any shape and size can be processed by...

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Plasma nitriding

Posted On : 13 Nov,2017

In this process the diffusion of nascent nitrogen inside the crystal lattice of a metal structure takes place leading to case hardening to increase the service life of...

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Plasma spray

Posted On : 13 Nov,2017

Atmospheric plasma spray facility is one of the important and most widely used thermal spray techniques.  In atmospheric plasma spray process, ceramic powders get...

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Plasma-based RCS Reduction

Posted On : 29 Nov,2017

The low detectability of aircraft from hostile radar sources can be practically achieved through shaping, radar absorbing coating (RAM/RAS), engineered materials, or...

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Post Buckling Studies

Posted On : 11 Dec,2017

Modern design and light-weight are the prerequisites for sustaining global competitiveness in the aerospace industry. Notably, stiffened skin construction made of...

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pressure measurements

Posted On : 12 Oct,2017

Electronic Pressure Scanner (ESP) -  is generally used for acquiring mean surface pressure data. An in-situ method is adopted for calibrating the scanner using a Druck...

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Pressure sensitive paint

Posted On : 12 Oct,2017

Surface pressure measurements are of great importance for basic fluid dynamics experiments, studying specific flow phenomena, and validating computational fluid dynamics...

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PSO based Optimization Package for Metamaterial Split Ring Resonator Configurations

Posted On : 29 Nov,2017

PSO based Optimization Package for Metamaterial Split Ring Resonator Configurations is a software CAD package developed in-house for estimation of structural parameters...

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Pulse Thermography based Non Destructive Evaluation

Posted On : 11 Dec,2017

Infrared Pulse Thermography is a non-contact, non-intrusive NDE technique that is widely used for the inspection of aircraft structures. The technique employs a burst of...

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pursuit based guidance control, l-psi control, LQR formation control and L1 adaptive control for the control of multi agent system

Posted On : 24 Nov,2017

Formation flying control law for micro air vehicles (MAVs) based on a combination of pursuit guidance and l-psi control algorithm are designed, developed and flight...

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Radar Cross Section Estimation and Analysis: Accelerated Numerical Techniques

Posted On : 29 Nov,2017

An accelerated numerical-based method for RCS computation of different conducting/dielectric electrically large structures has been developed for the computation of...

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Radar Cross Section Estimation and Analysis: High Frequency- based Methods

Posted On : 29 Nov,2017

The RCS estimation and analysis of different canonical and hybrid shapes has been carried out with the help of surface modeling, ray tracing, and methods like physical...

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Ray tracing package: For cuboid, building corridor, rectangular tunnel, and open streets

Posted On : 29 Nov,2017

Ray tracing package: For cuboid, building corridor, rectangular tunnel, and open streets is a software package developed in-house that can be used to generate ray path...

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RCS Estimation and Control of Phased Arrays

Posted On : 29 Nov,2017

Defense applications demand design of targets that exhibit the smallest possible RCS so as to be undetectable and untraceable for enemy radars by highly sensitive...

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Reactive processing of monolithic and ceramic composites

Posted On : 21 Nov,2017

The reactive processing is a simultaneous synthesis and sintering method wherein high purity, high density with excellent mechanical properties ceramics and ceramic...

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Real time parameter estimation

Posted On : 24 Nov,2017

Developed algorithms for real time parameter estimation of aircraft. The potential application of these algorithms are: Near real time stability margin estimation,...

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Real time sensor fusion architecture for Unmanned aerial vehicles

Posted On : 24 Nov,2017

Novel sensor fusion architecture is proposed to provide complete navigational solution for micro aerial vehicles (MAV) using low cost sensors and micro controller. The...

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Real time vibration response data acquisition and analysis

Posted On : 22 Nov,2017

Vibration responses due to acoustic loading on the structure are measured using accelerometers mounted at critical locations on to the structure. Acquired time domain...

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Refined Ray Tracing Package for Aircraft Cabin Applications

Posted On : 29 Nov,2017

Refined Ray Tracing Package for Aircraft Cabin Applications is a software developed in-house towards efficient computation of ray path details inside aircraft passenger...

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Resin Transfer Moulding Processes

Posted On : 23 Jan,2018

Resin transfer moulding processes are a family of processes wherein, the fabric reinforcements are laid up into the mould as a dry stack of materials, pre-compacted to...

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RHEOMETRIC ANALYSIS

Posted On : 20 Nov,2017

Rheometric analysis generally refers to experimental techniques used to determine the flow behavior and deformation of a material, i.e. the quantitative and qualitative...

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Roll damping rig

Posted On : 27 Nov,2017

A special rig has been developed to measure roll damping on such models and an isometric sketch of the rig is shown in Fig. 2 . The control system enables the model to...

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Scale Fatigue

Posted On : 07 Sep,2017

National Aerospace Laboratories (NAL), is India's second largest aerospace firm after Hindustan Aeronautics (HAL). It was established by the Council of Scientific and...

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SchlierEN

Posted On : 12 Oct,2017

  Schlieren (from German; singular "schliere") are optical inhomogeneities in transparent material not visible to the human eye.       Schlieren flow visualization...

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Screen printing

Posted On : 13 Nov,2017

A semi-automatic screen printing facility is being used for the fabrication of SOFC electrodes and micro-heaters for oxygen sensor. SED, NAL has developed expertise to...

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Sed ut perspiciatis unde omnis

Posted On : 07 Sep,2017

Nemo enim ipsam voluptatem quia voluptas sit aspernatur aut odit aut fugit, sed quia consequuntur magni dolores eos qui ratione

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Sense and Avoid techniques for UAS

Posted On : 24 Nov,2017

Unmanned Aerial Vehicle (UAV) has become a quiet a bit popular over the last 10 years because of its humongous growth in both military and commercial applications. Every...

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Similarity based stability and control clearance for stores integrated on to frontline fighter aircraft of Indian Air Force

Posted On : 24 Nov,2017

 The objective is to ensure aeromechanical clearance for the integration of new stores on a frontline fighter aircraft of Indian Air Force. Carriage and operating...

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Simulation based Virtual Reality

Posted On : 24 Nov,2017

The method of virtual reality for aircraft simulation provides the required cues for the pilot to feel the dynamics of the modeled aircraft. FMCD flight simulators are...

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Sliding mode control techniques for Micro Aerial Vehicles

Posted On : 24 Nov,2017

Advancement in Sliding mode control (SMC) in the past few decades has helped researchers in solving many interesting practical control problems, like robotics control,...

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Smoke flow visualization

Posted On : 12 Oct,2017

Smoke flow visualization is a technique used to capture the instantaneous streamlines formation off the surface of the wind tunnel model. The streamlines clearly...

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Sol-gel process

Posted On : 13 Nov,2017

Sol-gel process is a versatile wet-chemical green technique for the preparation of various functional coatings.  Sol-gel coatings are generally fabricated by spraying,...

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Solution combustion

Posted On : 13 Nov,2017

Solution combustion process is a very simple, fast and economical process for the synthesis of all kinds of ceramic oxides. The process involves the combustion of a...

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Solution polymerization technique

Posted On : 20 Nov,2017

The solution polymerization technique for acrylonitrile polymerization has several advantages over the aqueous slurry polymerization. The main economic advantage is the...

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Spray drying

Posted On : 13 Nov,2017

Spray drying is used for preparing flowable powders. In this method, liquid or slurry of the ceramic powder is rapidly dried with a hot gas. This method is used for...

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Stage Separation Studies

Posted On : 27 Nov,2017

Performance of multistage rockets critically depends on the time delay between the jettisoning of the lower stage and ignition of the upper stage to avoid aerodynamic...

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Statistical tools and techniques for pilot workload assessment

Posted On : 24 Nov,2017

Research studies are carried out on human factor issues in an aircraft program such as pilot’s mental workload assessment and pilot Vehicle interface. Several tools...

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Steady Pressure measurements

Posted On : 27 Nov,2017

Steady pressure measurement on the surface of the wind tunnel model is carried out to study the aerodynamic pressure and load distribution on the different components....

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Structural Assembly of Cocured Composite Parts

Posted On : 11 Dec,2017

Manufacturing aircraft composite components requires maximum precision and quality in all process steps including the assembly of subcomponents. Major fully integrated...

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Structural Health Monitoring Using Distributed Fiber Optic Sensors.

Posted On : 11 Dec,2017

Recent advancements in Fiber optic sensing technology make it possible to acquire the strain profile in a structure in a distributed manner. Rayleigh Based Fiber Optic...

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Structural Health Monitoring Using Fiber Bragg Grating (FBG) Sensors.

Posted On : 11 Dec,2017

Out of different sensors for Aircrafts Structural Health Monitoring, Fiber Optic Sensors are the best choice due their small size, lightweight, ease of multiplexing and...

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Surface Damage Detection using Image Processing

Posted On : 11 Dec,2017

One of the widely used inspection methods to ensure structural integrity of an aircraft is the visual inspection. In this technique a qualified inspector goes around the...

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Surface treatment and sizing technique

Posted On : 20 Nov,2017

The surface treatment of carbonized fibers is done by electrochemical oxidation process. The unit comprises of a system of 1) graphite rollers at the surface, which act...

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Tapecasting

Posted On : 13 Nov,2017

Tapecasting is an important ceramic processing technology in which ceramic suspension is cast as a thin or thick layer onto a flat surface using a doctor blade followed...

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Theoretical Studies

Posted On : 30 Nov,2017

Theoretical study of disturbance evolution in parallel shear flows.       There have been numerous studies on the receptivity, transient growth and nonlinear...

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TITRIMETRIC ANALYSIS

Posted On : 21 Nov,2017

Titrimetric analysis is a method of analysis in which a solution of the substance being determined is treated with a solution of a suitable reagent of exactly known...

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Transmission Line Transfer Matrix (TLTM) and equivalent circuit model

Posted On : 29 Nov,2017

In order to full-fill the demand of high performance radome in modern radar antenna systems at millimeter wave frequency regime. The design and analysis of metamaterial...

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Tuft flow visualization

Posted On : 12 Oct,2017

Tuft flow visualization is a technique used to capture the instantaneous flow pattern formed by the tufts (light and flexible) stuck on to the model surface. The...

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Tufting

Posted On : 11 Dec,2017

Composites due to their laminar construction have poor out-of-plane characteristics. Researchers around the world are looking at techniques to improve the through the...

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Twin Roll Model Support System (TRMS)

Posted On : 27 Nov,2017

The above picture shows TRMS mounted in wind tunnel with an aircraft model.     The main features of TRMS are : Versatile model support system to provide required...

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Ultra High Temperature Composites for Service Temperature of 250°C to 320°C.

Posted On : 11 Dec,2017

Advanced composites materials have become the front-runners in the aerospace industry. These materials have been extensively used in primary structures of recent civil...

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Unsteady pressure measurement system

Posted On : 27 Nov,2017

A multi-channel unsteady pressure measurement system, in conjunction with high frequency response pressure transducers flush-mounted on the surface of the model, is used...

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User Interface design using Visual C++ programming

Posted On : 24 Nov,2017

One of the main systems in a flight simulator is the ‘Instructor station’. Instructor station helps the user to initiate/control the simulation or to set mission...

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Vacuum bag moulding

Posted On : 28 Dec,2017

This method is an extension of the wet lay-up process in that the pressure is applied to the laminate once laid-up in order to improve its consolidation. This is done by...

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Vacuum Enhanced Resin Infusion Technology

Posted On : 11 Dec,2017

Majority of aerospace composite components are manufactured using prepreg / autoclave moulding process. Prepregs are perishable materials and have limited life. Prepregs...

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Wide band noise spectra simulation for acoustic testing of spacecraft and launch vehicle sub systems

Posted On : 22 Nov,2017

Noise spectra of various spacecraft and launch vehicle sub systems are required to be simulated in a reverberation chamber to qualify them for acoustic environment. ...

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Wind tunnel simulation of multi-booster separation trajectories of launch vehicles

Posted On : 27 Nov,2017

Safe separation of strap-on boosters from the core of a launch vehicle is an essential design and operational requirement. This important requirement is met by employing...

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Z pinning

Posted On : 11 Dec,2017

Cocured composite structures are being employed in order to reduce part count, assembly time and associated costs. Carbon fiber reinforced polymer laminates are prone to...

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Last updated on : 11-04-2018 03:45:51pm