NDLI: Ground contact model for mars science laboratory mission simulations

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Ground contact model for mars science laboratory mission simulations

Content Provider	NASA Technical Reports Server (NTRS)
Author	Raiszadeh, Behzad Way, David
Copyright Year	2012
Description	The Program to Optimize Simulated Trajectories II (POST 2) has been successful in simulating the flight of launch vehicles and entry bodies on earth and other planets. POST 2 has been the primary simulation tool for the Entry Descent, and Landing (EDL) phase of numerous Mars lander missions such as Mars Pathfinder in 1997, the twin Mars Exploration Rovers (MER-A and MER-B) in 2004, Mars Phoenix lander in 2007, and it is now the main trajectory simulation tool for Mars Science Laboratory (MSL) in 2012. In all previous missions, the POST 2 simulation ended before ground impact, and a tool other than POST 2 simulated landing dynamics. It would be ideal for one tool to simulate the entire EDL sequence, thus avoiding errors that could be introduced by handing off position, velocity, or other fight parameters from one simulation to the other. The desire to have one continuous end-to-end simulation was the motivation for developing the ground interaction model in POST 2. Rover landing, including the detection of the postlanding state, is a very critical part of the MSL mission, as the EDL landing sequence continues for a few seconds after landing. The method explained in this paper illustrates how a simple ground force interaction model has been added to POST 2, which allows simulation of the entire EDL from atmospheric entry through touchdown.
File Size	717025
Page Count	18
File Format	PDF
Alternate Webpage(s)	http://archive.org/details/NASA_NTRS_Archive_20140003460
Archival Resource Key	ark:/13960/t06x4bs4v
Language	English
Publisher Date	2012-08-13
Access Restriction	Open
Subject Keyword	Astronautics (general) Launch Vehicles Simulation Mars Science Laboratory Touchdown Trajectories Landing Atmospheric Entry Trajectory Optimization Descent Mars Missions Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science
Content Type	Text
Resource Type	Article

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