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Record Details

Record 45 of 6482
Reentry guidance for Space Shuttle
Author and Affiliation:
Causey, W.(NASA Marshall Space Flight Center, Guidance Theory Branch, Huntsville, Ala., United States)
Sohoni, V.
Abstract: An explicit guidance scheme is outlined which provides the appropriate energy management in order for the shuttle orbiter to reach any location within the required footprint. Considering the orbiter as entering the earth's atmosphere, expressions for the downrange, crossrange, and the time of the termination of the entry phase as functions of the control variables are developed. Performing an order-of-magnitude analysis of the terms in these expressions, only dominant terms are retained. Analytical expressions for the elements of the sensitivity matrix which represents the partial derivatives of the desired range with respect to control variables are formulated. Using the Gauss-Jordan inversion technique, the required change in guidance commands as a function of the deviations in the downrange and crossrange are explicitly computed.
Publication Date: Jun 01, 1973
Document ID:
19740056738
(Acquired Dec 04, 1995)
Accession Number: 74A39488
Subject Category: SPACE VEHICLES
Document Type: Conference Paper
Publisher Information: International Organization
Meeting Information: Symposium on Automatic Control in Space; 5th; June 4-8, 1973; Genoa; Italy
Meeting Sponsor: IFAC;
IIC;
ANIPLA
Contract/Grant/Task Num: NAS8-28612
Financial Sponsor: NASA; United States
Description: 18p; In English
Distribution Limits: Unclassified; Publicly available; Unlimited
Rights: Copyright
NASA Terms: ALGORITHMS; EQUATIONS OF MOTION; REENTRY GUIDANCE; SPACE SHUTTLE ORBITERS; AERODYNAMIC HEATING; AIRBORNE/SPACEBORNE COMPUTERS; ANGLE OF ATTACK; CIRCULAR ORBITS; DEGREES OF FREEDOM; ENERGY REQUIREMENTS; MACH NUMBER; REENTRY TRAJECTORIES
Imprint And Other Notes: IFAC, IIC, and ANIPLA, Symposium on Automatic Control in Space, 5th, Genoa, Italy, June 4-8, 1973, Paper. 18 p.
Availability Source: Other Sources
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