Planetary Lander Dynamic Model for GN&C

Abstract

The Boeing Company, with collaborators, is developing an approach to an integrated precision landing and hazard avoidance (PL&HA) system that is capable of incorporating a suite of sensors to achieve terrain-relative navigation, and hazard detection and avoidance. The approach for the powered descent phase of the lander includes the sensors to provide a digital terrain map (DTM), cost map algorithms that identify the safe-landing sites from the DTM, and guidance navigation and control (GN&C) derived from the Delta Clipper (DC-X) project. A future flight demonstration of the GN&C and PL&HA technology to demonstrate precision landing could utilize the XA-0.2 lander model of Masten Space Systems. Boeing is developing a high-fidelity dynamic simulation model of the Masten XA-0.2 lander platform. Masten Space Systems has provided lander computer-aided design (CAD), mass properties data, and propulsion system models to Boeing for inclusion in this high-fidelity dynamic model. Boeing has developed a fuel-slosh model, rocket plume model, and an aerodynamic model of the XA-0.2 lander, and it will conduct wind tunnel testing to determine aerodynamic properties for the GN&C simulation. Boeing will then conduct extensive Monte Carlo simulations using this high-fidelity dynamic model to predict lander dynamic behavior during autonomous ascent, descent, and landing when controlled by Boeing GN&C adapted from the DC-X. 1 Systems Engineer, Boeing IDS, 5301 Bolsa Avenue, Huntington Beach, CA 92647/Mail Stop H012-C349, AIAA Member. 2 Flight Simulation Engineer, Boeing IDS, 5301 Bolsa Avenue, Huntington Beach, CA 92647/Mail Stop H022C328, AIAA Member. 3 Senior Manager, Flight Systems, Boeing IDS, 5301 Bolsa Avenue, Huntington Beach, CA 92647/Mail Stop H013-C328, AIAA Member. 4 Senior Manager, Advanced Technology Concepts, Boeing Research and Technology, 5301 Bolsa Avenue, Huntington Beach, CA 92647/Mail Stop H045-E408, AIAA Member. 5 Aerothermodynamics Engineer, Boeing IDS, Bolsa Avenue, Huntington Beach, CA 92647/Mail Stop H013-C322, AIAA Member. 6 Propulsion Engineer, Boeing Research and Technology, 5301 Bolsa Avenue, Huntington Beach, CA 92647/Mail Stop H045-E408, AIAA Member. 7 CFD Engineer, Boeing Research and Technology, 5301 Bolsa Avenue, Huntington Beach, CA 92647/Mail Stop H045-E408, AIAA Member. 8 Propulsion Engineer, Masten Space Systems, 1570 Sabovich St., Bldg 25, Mojave, CA 93501, AIAA Member. 9 President, Masten Space Systems, 1570 Sabovich St., Bldg 25, Mojave, CA 93501, non-member. AIAA SPACE 2009 Conference & Exposition 14 17 September 2009, Pasadena, California AIAA 2009-6571 Copyright © 2009 by The Boeing Co. Published by the American Institute of Aeronautics and Astronautics, Inc., with permission. American Institute of Aeronautics and Astronautics 2