Results 121 to 130 of about 104,896 (307)

Explicit Flatness-Based Guidance in Reentry Phase [PDF]

open access: yesفصلنامه علوم و فناوری فضایی, 2014
An explicit guidance law is developed for a reentry vehicle. Motion is constrained to a three-dimensional Bezier curve. Acceleration commands are derived by solving an inverse problem that combined with differential flatness approach.
R. Esmaelzadeh
doaj  

Flatness-based Near Optimal Guidance [PDF]

open access: yesفصلنامه علوم و فناوری فضایی, 2017
An optimal explicit guidance law that maximizes terminal velocity is developed for the reentry of a vehicle to a fixed target. The equations of motion are reduced with differential flatness approach and acceleration commands are related to the parameters
Reza Esmaelzadeh   +2 more
doaj  

Radiation and Ablation Cooling for Manned Reentry Vehicles [PDF]

open access: yes, 1960
The necessity of reducing heat transfer to reentry vehicles has led I to the consideration of both radiative and ablation shields. The paper reviews briefly the heating problems for manned vehicles and the means whereby ablation and radiation afford ...
Roberts, L.
core   +1 more source

A New Method of Atmospheric Reentry for Space Ships [PDF]

open access: yesarXiv, 2007
In recent years, industry has produced high-temperature fiber and whiskers. The author examined the atmospheric reentry of the USA Space Shuttles and proposed the use of high temperature tolerant parachute for atmospheric air braking. Though it is not large, a light parachute decreases Shuttle speed from 8 km/s to 1 km/s and Shuttle heat flow by 3 - 4 ...
arxiv  

Hypersonic reentry vehicle Patent [PDF]

open access: yes, 1967
Aerodynamic configuration of reentry vehicle heat shield to provide longitudinal and directional stability at hypersonic ...
Lamb, R. H., Mayo, E. E.
core   +1 more source

Flight craft Patent [PDF]

open access: yes, 1966
Designing spacecraft for flight into space, atmospheric reentry, and landing at selected ...
Edwards, G. G.   +3 more
core   +1 more source

Thermal stress response of General Purpose Heat Source (GPHS) aeroshell material [PDF]

open access: yes
A thermal stress test was conducted to determine the ability of the GPHS aeroshell 3 D FWPF material to maintain physical integrity when exposed to a severe heat flux such as would occur from prompt reentry of GPHS modules.
Grinberg, I. M.   +2 more
core   +1 more source

Vehicle parachute and equipment jettison system Patent [PDF]

open access: yes, 1963
Parachute system for lowering manned spacecraft from post-reentry to ocean ...
Meyer, A. J., Jr.
core   +1 more source

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