Current and future developments in reusable launch vehicle technology demand on-board, real time autonomous abort handling. If an engine failure occurs, the guidance system must quickly determine a footprint of reachable landing sites and select a robust site. A robust site is one which maximizes the vehicle's ability to reach that site in the presence of multiple uncertainties. After selecting...

Analytical and experimental studies conducted at the NASA Langley Research Center for investigating integrated cryogenic propellant tank systems for a Reusable Launch Vehicle are described. The cryogenic tanks are investigated as an integrated tank system. An integrated tank system includes the tank wall, cryogenic insulation, Thermal Protection System (TPS) attachment sub-structure, and TPS. A...

The progressive integration of automation technologies in commercial transport aircraft flight decks -the “glass cockpit” -has had a major, and generally positive, impact on flight crew operations. Flight deck automation has provided significant benefits, such as economic efficiency, increased precision and safety, and enhanced functionality within the crew interface. These enhancements, howeve...

Abstract This paper presents the network-based modeling, validation and analysis of nonlinear liquid spring damper model under vertical landing conditions reusable launch vehicle. The impedance function is derived first. Then, its mechanical hydraulic networks are newly established based on hydro-mechanical analogy analysis. By comparing between corresponding symmetric asymmetric structures, me...