![Sample our Engineering & Technology journals, sign in here to start your access, latest two full volumes FREE to you for 14 days]({"type":"image" , "src" : "/sda/5933/TOC-Subject-Sample-2021-Engineering-Tech.jpg"})
ABSTRACT
Flush Air Data Sensing System (FADS) is an important subsystem required for a winged re-entry vehicle. It essentially makes use of surface pressure measurements located at a suitable position in the vehicle for deriving the air data parameters of the vehicle such as angle of attack, angle of sideslip, Mach number, etc. These air data parameters are used by the control and guidance system for carrying out gain scheduling, trim scheduling of control surfaces and overall flight management. The accuracy of the pressure sensors used in FADS is critical in achieving the targeted accuracy of the air data parameters. In the FADS system considered in this paper, piezoresistive MEMS-based pressure sensors are used. The FADS system is located in the nosecone of the vehicle which is a region prone to vibration during transportation as well as during flight. It is essential that the pressure sensors perform with the desired accuracies in spite of the vibration environment. Sine and random vibration testing are carried out as part of qualification testing of the vibration sensors of FADS. Analysis of the test results shows that the accuracies demanded by the system are provided by the pressure sensors under the vibration environment.
DISCLOSURE STATEMENT
No potential conflict of interest was reported by the authors.
Additional information
Notes on contributors
M. Jayakumar
M. Jayakumar obtained his M.Tech in Systems and Control Engineering from IIT, Bombay and Ph.D in Electronics and Communication Engineering from the University of Kerala. He has over 27 years of experience in VSSC/ISRO. He is currently Dy. Project Director in RLV-TD Project, VSSC and was the Vehicle Director of the successful Reusable Launch Vehicle Technology Demonstrator Mission in May 2016. Corresponding author. Email: [email protected]
N. Shyam Mohan
N. Shyammohan obtained his M.Tech in Mechanical Engineering (Design) from IIT, Madras. He has over 32 years of experience in VSSC/ISRO. He was the Project Director, of RLV-TD Project in VSSC and was the mission director of the successful Reusable Launch Vehicle Technology Demonstrator Mission in May 2016. Email: [email protected]
S. B. Vidya
S.B. Vidya joined ISRO in 2008 after obtaining her M.Tech in Digital Systems & Communication from NIT Calicut in 2006. She has been working in the design and development of Flush Air Data System (FADS) for RLV-TD. She also works on signal processing and structural health monitoring in launch vehicles. Email: [email protected]
K. C. Finitha
K.C. Finitha obtained her M.Tech in Electronics and Communication Engineering from College of Engineering, Trivandrum. She has 24 years of design experience in ISRO. She has been working in the design of digital electronics systems for launch vehicles including FADS for RLV-TD, digital signal processing systems and telemetry packages. Email: [email protected]
A. K. Abdul Samad
A.K. Abdul Samad is currently Head of Signal processing and onboard Video Systems Division in VSSC/ISRO. He joined VSSC/ISRO in 1988 after obtaining B.Tech in Electronics and Communication Engineering from College of Engineering Trivandrum. He is involved in the design of Avionics packages for launch vehicles and is the recipient of the ISRO Team award for Moon Impact Probe in Chandrayan Mission. Email: [email protected]
Shashi Krishna
Shashi Krishna Joined ISRO in 2012 after obtaining B.Tech in Avionics from Indian Institute of Space Science and Technology, Trivandrum. He has been working in the area of Avionics and Electrical Integration in Reusable Launch Vehicle Technology demonstrator Project. Email: [email protected]
Aisha Sidhick
Aisha Sidhick joined LPSC/ISRO in 2002 after obtaining B.Tech in Electronics Engineering from Cochin University. She has been working in the area of design, development and production of transducers/sensors for the launch vehicle and satellite applications. She is the recipient of the Astronautical Society of India young scientist award for the year 2006 & ISRO young scientist award for the year 2012. Email: [email protected]
M.V. Narasimha Prasad
M.V. Narasimha Prasad joined ISRO in 1989 after obtaining his Ph.D from Indian Institute of Science, Bangalore. He retired as Group Director for Sensors Research & Development Group (SRDG), LPSC/ISRO, Bangalore. He has contributed in the development & supply of pressure, temperature, level, speed and cryogenic sensors for all launch vehicle and satellite applications. He has to his credit 22 International & 14 National Publications, 1 International & 4 National Patents. Email: [email protected]