Aerodynamic and Propulsion Assisted Maneuvering for Orbital Transfer Vehicles

Abstract

The ability to perform rapid orbital transfers will provide the ability for unpredictable reconnaissance or timely rescue missions. This paper examines the means and ways of enabling responsive space through propulsive and aero-assisted maneuvers. A conical hypersonic waverider was designed and its aerodynamic database was generated using hypersonic incidence angle analysis tools with a viscous skin-drag correction. Sample trajectories were analyzed for heating levels. Transpirational cooling along the leading edge or the use of ultra-high temperature ceramics are needed to control heating. A throttled engine regulator control was built to provide sufficient energy to maintain the orbit. The regulator control law is derived and analyzed for performance ability. The orbital transfer trajectories were analyzed using an interactive simulation tool. Results have confirmed previous research that aero-assisted maneuvers are more efficient than purely propulsive maneuvers alone for executing synergetic plane changes.

High Lift-to-Drag Ratio Waveriders for Missions in the Martian Atmosphere

“…A number of studies have been performed on various mission scenarios that operate within or through a planet's atmosphere [16][17][18][19][20][21][22][23][24][25][26] . Five such trajectories in or through the Martian atmosphere have been examined in this work.…”