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Padhy V.P.,Indian Institute of Science | Balakrishnan N.,Indian Institute of Science | Murthy P.S.,Aeronautical Development Establishment ADE
Progress in Electromagnetics Research Symposium | Year: 2014

An efficient and accurate 3D full wave numerical solution model for computing the radar cross section (RCS) of wake-vortex is presented, by solving Euler equation to compute the pressure in the aircraft wake region by computational fluid dynamics model and parallel integral equation (IE), based on method of moments (MoM) is used to compute the volume polarization currents, under the plane wave incidence. Then the currents are used to compute far-field from the vortex region. Source

Gupta N.,National Aerospace Laboratories, Bangalore | Augustin M.J.,National Aerospace Laboratories, Bangalore | Sathya S.,National Aerospace Laboratories, Bangalore | Sundaram R.,National Aerospace Laboratories, Bangalore | And 9 more authors.
Structural Health Monitoring 2011: Condition-Based Maintenance and Intelligent Structures - Proceedings of the 8th International Workshop on Structural Health Monitoring | Year: 2011

This paper presents an airworthy, Fiber Bragg Gratings (FBG) based, Structural Health monitoring System (SHM) system for an Unmanned Aerial Vehicles (UAV). Various design issues pertaining to sensors location, embedment, integration of interrogation system instrumentation and online data recording are addressed. FBG data were processed to identify both loads and vibration modes using low pass filtering and artificial neural network algorithms. Results of an actual flight test conducted indicate that this sensor network can track the vibration and loads signature during all flight conditions, making this system a candidate for real time UAVs structural airworthy assessment. Source

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