LUNAR LANDING AND LONG-RANGE EARTH REENTRY GUIDANCE BY APPLICATION OF PERTURBATION THEORY
Lunar landing & long range earth reentry guidance by single nominal trajectory using perturbation theory
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Lunar landing & long range earth reentry guidance by single nominal trajectory using perturbation theory
Guidance and control methods for spacecraft atmospheric reentry
Flight trajectory, control, guidance and equipment limitations of nuclear-electric spacecraft
Flight simulation of piloted booster systems to determine control and guidance concepts, pilot simulator performance, and pilot trajectory control
Guidance and control methods for spacecraft atmospheric reentry
Trajectories, orbital calculations, and adaptive guidance
Optimal guidance approximations using perturbation theory
Scientific research and future guidance and leadership in science and technology
Fixed base simulator study of pilot ability to perform soft lunar landing with simplified guidance technique
A relatively simple injection-guidance system used in conjunction with post-injection midcourse correction will be adequate for lunar and interplanetary missions.
Analytical expressions for two-body linear guidance matrices in velocity dependent coordinate system for variant motion equation solutions
Manual abort guidance from midcourse region of lunar mission
Optimum guidance in two dimensions of constant acceleration low-thrust vehicle spiraling away from and in toward planet
Optimum guidance in two dimensions of constant acceleration low-thrust vehicle spiraling away from and in toward planet
Synthesis parametry of ensemble-averaged second- order polynomial approximation to performance index of optimal guidance linear feedback control system
Star/horizon simulator is used for alignment and optical plus photoelectric tests of the sextant for the Apollo guidance and navigation system optical unit assembly. The unit is basically a refractive collimator with a two inch objective lens system and a twenty-four inch focal length.
Nonorthogonal sensor configuration using six single-degree-of-freedom inertial reference gyroscopes and a complete data processing and self-contained failure detection-and-isolation mechanism provides redundant capabilities to guidance and navigation systems. This system has been formulated in a strap-down configuration to attain maximum redundancy.
Subroutines for prototype computer program definition for mathematical model of approach guidance system for estimating spacecraft orbit