NASA Logo, External Link
Facebook icon, External Link to NASA STI page on Facebook Twitter icon, External Link to NASA STI on Twitter YouTube icon, External Link to NASA STI Channel on YouTube RSS icon, External Link to New NASA STI RSS Feed AddThis share icon
 

Record Details

Record 3 of 6482
Shuttle entry guidance
Author and Affiliation:
Harpold, J. C.(NASA Lyndon B. Johnson Space Center, Houston, TX, United States)
Graves, C. A., Jr.(NASA Johnson Space Center, Houston, Tex., United States)
Abstract: This paper describes the design of the entry guidance for the Space Shuttle Orbiter. This guidance provides the steering commands for trajectory control from initial penetration of the earth's atmosphere until the terminal area guidance is activated at an earth-relative speed of 2500 fps. At this point, the Orbiter is at a distance of about 50 nmi from the runway threshold, and at an altitude of about 80,000 ft. The entry guidance design is based on an analytic solution of the equations of motion defining the drag acceleration profile that meets the terminal criteria of the entry flight while maintaining the flight within systems and operational constraints. Guidance commands, which are based on a control law that ensures damping of oscillatory type trajectory motion, are computed to steer the Orbiter to this drag acceleration profile.
Publication Date: Oct 01, 1978
Document ID:
19790037248
(Acquired Dec 01, 1995)
Accession Number: 79A21261
Subject Category: ASTRODYNAMICS
Report/Patent Number: AAS PAPER 78-147
Document Type: Conference Paper
Publisher Information: United States
Meeting Information: American Astronautical Society, Anniversary Conference; 25th; Oct. 30, 1978-Nov. 2, 1978; Houston, TX
Meeting Sponsor: American Astronautical Society
Financial Sponsor: NASA; United States
Organization Source: NASA Johnson Space Center; Houston, TX, United States
Description: 35p; In English
Distribution Limits: Unclassified; Publicly available; Unlimited
Rights: Copyright
NASA Terms: COMMAND AND CONTROL; REENTRY GUIDANCE; SPACE SHUTTLE ORBITERS; SPACECRAFT GUIDANCE; ACCELERATION (PHYSICS); AERODYNAMIC DRAG; ANGLE OF ATTACK; EQUATIONS OF MOTION; MONTE CARLO METHOD; OSCILLATION DAMPERS; SPACE TRANSPORTATION SYSTEM FLIGHTS; TERMINAL GUIDANCE; TRAJECTORY CONTROL
Imprint And Other Notes: American Astronautical Society, Anniversary Conference, 25th, Houston, Tex., Oct. 30-Nov. 2, 1978, 35 p.
Availability Source: Other Sources
› Back to Top
Find Similar Records
NASA Logo, External Link
NASA Official: Gerald Steeman
Site Curator: STI Program
Last Modified: August 16, 2011
Contact Us