Simulator Study Of Ability Of Pilots To Establish Near Circular Lunar Orbits Using Simplified Guidance Techniques

Author : Jacob H. Lichtenstein
Publisher :
ISBN 13 :
Total Pages : 68 pages
Book Rating : 4.:/5 (31 download)

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Download or read book A Statistical Study of Ability of Simulated Pilots to Control the Approach and Descent of the Lunar Module to the Lunar Surface written by Jacob H. Lichtenstein and published by . This book was released on 1971 with total page 68 pages. Available in PDF, EPUB and Kindle. Book excerpt: An analytical study was made to assess the ability of a plot, simulated by permissible error performance, to control the entire lunar approach and descent with relatively simple guidance schemes. The control task consisted of applying retrothrust during the hyperbolic approach to establish a lunar orbit. During this lunar coasting orbit, the lunar module was separated from the command and service module. A second deorbit thrust period was used on the lunar module to establish a coasting descent, and a final thrust period was used to put the vehicle into a reasonable landing situation. Throughout the maneuver the pilot was permitted to make reasonable errors, selected in a random manner, in the thrust time and attitude control. The control schemes consisted of maintaining a constant vehicle attitude with respect to the line of sight to the lunar horizon for the first and second thrust periods, and a constant angle with respect to the line of sight to the orbiting command and service module for the third thrust period.--P. [i].