Entry, Descent, and Landing Performance for a Mid-Lift-to-Drag Ratio Vehicle at Mars

Johnson, Breanna J ; Braden, Ellen M ; Sostaric, Ronald R ; Cerimele, Christopher J ; Lu, Ping

关键词: LIFT DRAG RATIO;    MARS LANDING;    DEGREES OF FREEDOM;    SUPERSONIC FLIGHT;    FLIGHT CONTROL;    ENTRY, DESCENT AND LANDING;    TRAJECTORIES;    PAYLOADS;    SIMULATION;   

RP-ID  :  JSC-E-DAA-TN51349

学科分类：航空航天科学

美国|英语

来源: NASA Technical Reports Server

【 摘 要 】

In an effort to mature the design of the Mid-Lift-to-Drag ratio Rigid Vehicle (MRV) candidate of the NASA Evolvable Mars Campaign (EMC) architecture study, end-to-end six-degree-of-freedom (6DOF) simulations are needed to ensure a successful entry, descent, and landing (EDL) design. The EMC study is assessing different vehicle and mission architectures to determine which candidate would be best to deliver a 20 metric ton payload to the surface of Mars. Due to the large mass payload and the relatively low atmospheric density of Mars, all candidates of the EMC study propose to use Supersonic Retro-Propulsion (SRP) throughout the descent and landing phase, as opposed to parachutes, in order to decelerate to a subsonic touchdown. This paper presents a 6DOF entry-to-landing performance and controllability study with sensitivities to dispersions, particularly in the powered descent and landing phases.