Simulation-based analysis of reentry dynamics for the SHARP atmospheric entry vehicle [microform] : a thesis ... / by Clemens Emmanuel Tillier.
"This thesis describes the analysis of the reentry dynamics of a high-performance lifting atmospheric entry vehicle through numerical simulation tools. The vehicle, named SHARP, is currently being developed by the Thermal Protection Materials and Systems branch of NASA Ames Research Center, Mof...
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| Other title: | Simulation based analysis of reentry dynamics for the SHARP atmospheric entry vehicle. |
| Format: | Government Document Microfilm Book |
| Language: | English |
| Published: |
[Washington, DC] : [Springfield, Va.] :
[National Aeronautics and Space Administration] ; [National Technical Information Service, distributor],
[1998]
|
| Series: | NASA contractor report ;
NASA CR-208334. |
| Subjects: |
MARC
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| 100 | 1 | |a Tillier, Clemens Emmanuel. | |
| 245 | 1 | 0 | |a Simulation-based analysis of reentry dynamics for the SHARP atmospheric entry vehicle |h [microform] : |b a thesis ... / |c by Clemens Emmanuel Tillier. |
| 246 | 2 | |a Simulation based analysis of reentry dynamics for the SHARP atmospheric entry vehicle. | |
| 260 | |a [Washington, DC] : |b [National Aeronautics and Space Administration] ; |a [Springfield, Va.] : |b [National Technical Information Service, distributor], |c [1998] | ||
| 300 | |a 1 volume. | ||
| 336 | |a text |b txt |2 rdacontent. | ||
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| 490 | 1 | |a [NASA contractor report] ; |v NASA/CR-208334. | |
| 520 | |a "This thesis describes the analysis of the reentry dynamics of a high-performance lifting atmospheric entry vehicle through numerical simulation tools. The vehicle, named SHARP, is currently being developed by the Thermal Protection Materials and Systems branch of NASA Ames Research Center, Moffett Field, California. The goal of this project is to provide insight into trajectory tradeoffs and vehicle dynamics using simulation tools that are powerful, flexible, user-friendly and inexpensive. Implemented Using MATLAB and SIMULINK, these tools are developed with an eye towards further use in the conceptual design of the SHARP vehicle's trajectory and flight control systems. A trajectory simulator is used to quantify the entry capabilities of the vehicle subject to various operational constraints. Using an aerodynamic database computed by NASA and a model of the earth, the simulator generates the vehicle trajectory in three-dimensional space based on aerodynamic angle inputs. Requirements for entry along the SHARP aerothermal performance constraint are evaluated for different control strategies. Effect of vehicle mass on entry parameters is investigated, and the cross range capability of the vehicle is evaluated. Trajectory results are presented and interpreted. A six degree of freedom simulator builds on the trajectory simulator and provides attitude simulation for future entry controls development. A Newtonian aerodynamic model including control surfaces and a mass model are developed. A visualization tool for interpreting simulation results is described. Control surfaces are roughly sized. A simple controller is developed to fly the vehicle along its aerothermal performance constraint using aerodynamic flaps for control. This end-to-end demonstration proves the suitability of the 6-DOF simulator for future flight control system development. Finally, issues surrounding real-time simulation with hardware in the loop are discussed."--NASA Technical Reports Server web site. | ||
| 530 | |a Available in microfiches and via the Internet. | ||
| 650 | 0 | |a Space vehicles |x Atmospheric entry |x Aerodynamics. | |
| 650 | 0 | |a Flight control. |0 http://id.loc.gov/authorities/subjects/sh85049111. | |
| 650 | 7 | |a Aerodynamic characteristics. |2 nasat. | |
| 650 | 7 | |a Computerized simulation. |2 nasat. | |
| 650 | 7 | |a Lifting bodies. |2 nasat. | |
| 650 | 7 | |a Trajectory control. |2 nasat. | |
| 650 | 7 | |a Atmospheric entry. |2 nasat. | |
| 650 | 7 | |a Thermal protection. |2 nasat. | |
| 650 | 7 | |a Flight control. |2 nasat. | |
| 710 | 1 | |a United States. |b National Aeronautics and Space Administration. |0 http://id.loc.gov/authorities/names/n78087581 |1 http://isni.org/isni/0000000449071619. | |
| 830 | 0 | |a NASA contractor report ; |v NASA CR-208334. |0 http://id.loc.gov/authorities/names/n83825229. | |
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| 952 | f | f | |p Can circulate |a University of Colorado Boulder |b Boulder Campus |c Norlin |d Norlin Library - Government Information - Microform |e NAS 1.26:208334 |h Superintendent of Documents classification |i document |n 1 |