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 approach…
Highlights
Extensive research in the area of turbulence and transition for incompressible flows The in-house incompressible flow…Acoustic Emission is the phenomenon of generation of transient elastic waves due to rapid release of strain energy caused by structural alterations within a…
The synthesis of the radiation pattern of antenna array mounted on the platform (planar/non-planar)…
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 has…
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…
Aerospace Weather Research Group
Following the closure of the Flosolver Unit, persons involved in numerical modelling were assigned to the…
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…
An aircraft simulation model consists of several sub system models for 6 DOF flight dynamics, engine, fuel, sensors, landing gear, hydraulic and…
An Air Data System (ADS) plays a key role in stabilization, control and improving performance of modern fighter aircraft. Airdata sensors…
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…
Aqueous slurry polymerization is the most widely adopted techniques/process for acrylic fiber manufacturing. Water is used here as a continuous…
Autoclave molding technique is an advanced composite manufacturing process. It is widely used in the aerospace industry to fabricate high strength / weight ratio…
Maximizing performance of thermoset composite materials requires, amongst other things, an increase in the fiber to resin ratio and removal…
A precise and accurate measurement of aerodynamic forces and moments in the wind tunnel is possible only if the strain gauge balances are…
Condition monitoring is used to dynamically monitor various engine parameters and helps in detecting the faults before a catastrophic failure occurs.…
The CTS is a sophisticated computer – controlled electro-mechanical system for wind tunnel simulation of the trajectory of a store released from a parent…
The carbonization processes are preceded by thermo-oxidative stabilization in the heat treatment line for the continuous conversion of acrylic…
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…
Carbon fibre (Cf) reinforced ceramic matrix composites (CMCs) are attractive for various applications due to low density…
Co-precipitation is a simple, economical and industrially viable technique that can be used for the synthesis of technologically important oxide materials. The steps…
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…
CFD code development is a niche area as opposed to employing CFD codes for applications and is hence, usually confined to academic institutes, research…
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…
Detail Design acts as a focal point and provides comprehensive solutions for the product development from conceptual-to-component assembly. It has exhaustive capabilities…
The major limitations of thermoset polymers are their inability to be re-melted or recycled, shorter shelf-life, higher…
The dry jet wet spinning is a combination of both wet and dry spinning techniques for fiber formation. In this technique, the spinneret is…
Trajectory of a separated store from LCA has to be estimated with its standalone inertial measurement unit (IMU)…
Extended Kalman filter (EKF) solution for attitude and heading estimation was proposed with code phase GPS measurements…
The design of an EKF is addressed for the purpose of estimating the position, velocity, attitude and heading of an Aircraft. While,…
Electropolishing is reverse of electrodeposition process in which material is removed instead of deposition from the component by means of electrochemical process. By…
Off late, aircraft uses a combination of pneumatic, hydraulic, and electric systems. Future aircrafts will have electrical system and…
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…
Electroless nickel plating (EN) is a simple auto-catalytic chemical reduction process for depositing metals, alloys and composites. In this process metal ions are…
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…
In present era, low-observability is one of the critical requirements in aerospace sector, especially related to defence.…
The antenna array system of aerospace and naval platforms are exposed to extreme environment such as rain, hailstorms, snow, wind,…
Optimization techniques plays a key role almost all the engineering applications. Centre for…
CSIR-NAL Bangalore has delivered several airborne radomes for various national programs during the past thirty years. CSIR-NAL team (…
Based of theoretical concept MATLAB based scripts have been used for aero-data and performance parameters estimation. Tools…
Development of Enhanced Synthetic Vision System (ESVS) for transport aircraft is one of the major activities initiated by Multi Sensor Data Fusion (…
Impact damages due to events such as tool drops, runway debris, hailstones etc. can reduce the load carrying capacity of…
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…
As mentioned above, the numerical methods such as MM-GSM, equivalent circuit, and TLTM methods are used…
1. Schlieren/…
FLUID-STRUCTURE-INTERACTION TECHNIQUE FOR AEROELASTIC STUDIES
A fluid structure interaction technique based on hi-…
Presently developing algorithms for FADS. The algorithm is proven on CFD data in a 6 DOF simulation platform.
Facilities where it can be…
Force and moment measurement is very essential at given speed range in order to aerodynamically characterize any flying vehicle. The three forces and three…
A single - degree - of - freedom forced oscillation rig has been developed for measurements of dynamic stability derivatives. The rig features an…
Initially, free oscillation technique was developed for measurement of pitch and yaw damping derivatives. The free oscillation rig featured a crossed-flexure…
The Materials Science Division (MSD) of CSIR - National Aerospace Laboratories has been carrying out work on Friction Stir Welding for the past three years.…
Frequency selective surfaces (FSS) are widely used as spatial filter for the design of absorbers, radomes, dichroic plates, and reflector…
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.…
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…
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 part…
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…
The upcoming national programs on fifth generation combat aircrafts either manned or…
HVOF is a high velocity and low temperature thermal spray process used for depositing dense metal, alloy, carbide and cermet coatings. The carbide coatings…
Dedicated crossed-flexure-pivot balance for measurement of hinge-moment on control surface has been developed. These are specially designed to measure…
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…
Working towards indigenous development of advance avionics technologies namely Enhanced Vision System (EVS), Synthetic Vision…
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 MB-…
Image registration is pre-request for image fusion. There are many techniques are available in open literature. Control point registration is the best and…
One of the major concerns during manufacturing process of composite parts using prepregs is the occurrence of accidental…
Most of the composite structures for the aircraft have been developed using carbon- epoxy prepreg material system,…
Longitudinal flight control system designed based on total energy control system (TECS) using ℒ1 adaptive control theory. The…
The automated layer by layer deposition system is computer controlled and enables deposition of different coatings with customized dipping speed, withdrawal…
A linear analysis of any structure is generally performed when structure is expected to show linear behavior. Major aerospace structure components like wing,…
Sputtering is a versatile physical vapor deposition process to fabricate a variety of metallic, oxide, nitride and carbide coatings. At…
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…
A short overview on the Mesh Free CFD activities at NAL
Development of mesh free methods in CFD is an active research area. These methods have a lot of…
Micro Arc Oxidation (MAO) or Plasma Electrolytic Oxidation (PEO) is an electrochemical oxidation process generally applied to Al, Mg and Ti. Dense MAO…
Frequency selective surfaces (FSS) are widely used as spatial filter for the design of absorbers, radomes, dichroic plates, and…
Model based design framework is getting popular in the aerospace sector for flight control applications. It supports the…
Modelling and simulation techniques are used in all the flight simulator facilities mentioned.
Computationally efficient table look-up techniques for…
The airfield scenario was modeled based on the airport layout…
Materials Science Division, CSIR-NAL has developed a unique shaping method called Mouldless Casting for advanced ceramic materials to fabricate…
Multi sensor data fusion group of FMCD has developed advanced multi sensor data fusion techniques and algorithms for processing and…
An aircraft engine is the component of the propulsion system for an aircraft that generates mechanical power (thrust)…
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…
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…
ACD is immensely involved in finite element solution techniques for providing solutions for wide range of static, dynamic, buckling, optimization and non…
The flight controller is developed using Nonlinear Dynamic Inversion (NDI) in combination with time scale separation, static control…
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…
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…
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 samples…
Standard IEEE Calibration methodology and test procedure followed to calibrate MEMS IMU. The intent is to find out stochastic and…
Methodology
Panel methods are among the most versatile and powerful tools developed in the last three / four decades for the aerodynamic analysis of complex…
Output Error Method, Filter Error method, Extended Kalman Filter, Feed Forward Neural Networks and Discrete Fourier…
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…
Physiological signal processing for pilot workload assessment
Aviation safety has been the primary focus in the industry. Aviation human factors are the main cause of aviation accidents.…
Piezoceramic thin films and coatings
Conformal Piezoceramic coating on Aerospace Grade Aluminum metal, Composite Structures and Silicon wafer has been successfully developed in the Materials…
Plasma enhanced chemical vapor deposition (PECVD)
It is a chemical vapor deposition process which uses plasma for thin film deposition. Thin films and coatings can be deposited from respective…
It is an ion implantation process that modifies the surfaces using RF plasma for enhancing tribological properties. Samples with any shape and size can…
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…
Atmospheric plasma spray facility is one of the important and most widely used thermal spray techniques. In atmospheric plasma spray process, ceramic powders get melted in…
The low detectability of aircraft from hostile radar sources can be practically achieved through shaping, radar absorbing coating (RAM/RAS), engineered…
Modern design and light-weight are the prerequisites for sustaining global competitiveness in the aerospace industry. Notably, stiffened skin construction made of…
pressure measurements
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…
Pressure sensitive paint
Surface pressure measurements are of great importance for basic fluid dynamics experiments, studying specific flow phenomena, and validating computational fluid dynamics…
PSO based Optimization Package for Metamaterial Split Ring Resonator Configurations
PSO based Optimization Package for Metamaterial Split Ring Resonator Configurations is a software CAD package…
Pulse Thermography based Non Destructive Evaluation
Infrared Pulse Thermography is a non-contact, non-intrusive NDE technique that is widely used for the inspection of aircraft structures. The…
pursuit based guidance control, l-psi control, LQR formation control and L1 adaptive control for the control of multi agent system
Formation flying control law for micro air vehicles (…
Radar Cross Section Estimation and Analysis: Accelerated Numerical Techniques
An accelerated numerical-based method for RCS computation of different conducting/dielectric electrically large…
Radar Cross Section Estimation and Analysis: High Frequency- based Methods
The RCS estimation and analysis of different canonical and hybrid shapes has been carried out with the help of surface…
Ray tracing package: For cuboid, building corridor, rectangular tunnel, and open streets
Ray tracing package: For cuboid, building corridor, rectangular tunnel, and open streets is a software…
RCS Estimation and Control of Phased Arrays
Defense applications demand design of targets that exhibit the smallest possible RCS so as to be undetectable and untraceable for enemy radars by…
Reactive processing of monolithic and ceramic composites
The reactive processing is a simultaneous synthesis and sintering method wherein high purity, high density with excellent mechanical…
Real time parameter estimation
Developed algorithms for real time parameter estimation of aircraft. The potential application of these algorithms are: Near real time stability margin estimation,…
Real time sensor fusion architecture for Unmanned aerial vehicles
Novel sensor fusion architecture is proposed to provide complete navigational solution for micro aerial vehicles (MAV)…
Real time vibration response data acquisition and analysis
Vibration responses due to acoustic loading on the structure are measured using accelerometers mounted at critical locations on to the…
Refined Ray Tracing Package for Aircraft Cabin Applications
Refined Ray Tracing Package for Aircraft Cabin Applications is a software developed in-house towards efficient computation of ray path…
Resin Transfer Moulding Processes
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-…
RHEOMETRIC ANALYSIS
Rheometric analysis generally refers to experimental techniques used to determine the flow behavior and deformation of a material, i.e. the quantitative and qualitative…
A robust flutter prediction technique is developed by coupling nominal analysis, ground vibration test (GVT), flight flutter test (FFT), uncertainty model updation and…
Roll damping rig
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 be driven…
Scale Fatigue
National Aerospace Laboratories (NAL), is India's second largest aerospace firm after Hindustan Aeronautics (HAL). It was established by the Council of Scientific and Industrial…
Screen printing
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 fabricate…
Sense and Avoid techniques for UAS
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…
Similarity based stability and control clearance for stores integrated on to frontline fighter aircraft of Indian Air Force
The objective is to ensure aeromechanical clearance for the…
Simulation based Virtual Reality
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…
Sliding mode control techniques for Micro Aerial Vehicles
Advancement in Sliding mode control (SMC) in the past few decades has helped researchers in solving many interesting practical control…
Smoke flow visualization
Smoke flow visualization is a technique used to capture the instantaneous streamlines formation off the surface of the wind tunnel model. The streamlines clearly…
Sol-gel process
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, spin-…
Solution combustion
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 redox…
Solution polymerization technique
The solution polymerization technique for acrylonitrile polymerization has several advantages over the aqueous slurry polymerization. The main economic advantage…
Spray drying
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 preparing plasma…
Stage Separation Studies
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…
Statistical tools and techniques for pilot workload assessment
Research studies are carried out on human factor issues in an aircraft program such as pilot’s mental workload assessment and pilot…
Steady Pressure measurements
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…
Structural Assembly of Cocured Composite Parts
Manufacturing aircraft composite components requires maximum precision and quality in all process steps including the assembly of subcomponents.…
Structural Health Monitoring Using Distributed Fiber Optic Sensors.
Recent advancements in Fiber optic sensing technology make it possible to acquire the strain profile in a structure in a…
Structural Health Monitoring Using Fiber Bragg Grating (FBG) Sensors.
Out of different sensors for Aircrafts Structural Health Monitoring, Fiber Optic Sensors are the best choice due their small…
Surface Damage Detection using Image Processing
One of the widely used inspection methods to ensure structural integrity of an aircraft is the visual inspection. In this technique a qualified…
Surface treatment and sizing technique
The surface treatment of carbonized fibers is done by electrochemical oxidation process. The unit comprises of a system of 1) graphite rollers at the…
Tapecasting
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 by drying and…
Theoretical Studies
Theoretical study of disturbance evolution in parallel shear flows.
There have been numerous studies on the receptivity, transient growth and nonlinear development…
Thermoelectric Materials, Thin-film and Devices
Thermoelectric materials in bulk and thin-film form have application as energy harvesting from waste heat and…
TITRIMETRIC ANALYSIS
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…
TRAJECTORY SIMULATION TECHNIQUE FOR INTEGRATION OF STORES ON AIRCRAFT
An approach for store trajectory simulation is…
Transmission Line Transfer Matrix (TLTM) and equivalent circuit model
In order to full-fill the demand of high performance radome in modern radar antenna systems at millimeter wave frequency…
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…
Twin Roll Model Support System (TRMS)
The above picture shows TRMS mounted in wind tunnel with an aircraft model.
The main features of TRMS are :…
Ultra High Temperature Composites for Service Temperature of 250°C to 320°C.
Advanced composites materials have become the front-runners in the aerospace industry. These materials have been…
Unsteady pressure measurement system
A multi-channel unsteady pressure measurement system, in conjunction with high frequency response pressure transducers flush-mounted on the surface of the…
User Interface design using Visual C++ programming
One of the main systems in a flight simulator is the ‘Instructor station’. Instructor station helps the user to initiate/control the simulation…
Vacuum bag moulding
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…
Vacuum Enhanced Resin Infusion Technology
Majority of aerospace composite components are manufactured using prepreg / autoclave moulding process. Prepregs are perishable materials and have…
Wide band noise spectra simulation for acoustic testing of spacecraft and launch vehicle sub systems
Noise spectra of various spacecraft and launch vehicle sub systems are required to be…
Wind tunnel simulation of multi-booster separation trajectories of launch vehicles
Safe separation of strap-on boosters from the core of a launch vehicle is an essential design and operational…
Last updated on : 24-08-2018 09:25:53am