Trajectory Control for Vehicles Entering the Earth's Atmosphere at Small Flight-path Angles PDF Download
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Author: John M. Eggleston Publisher: ISBN: Category : Space vehicles Languages : en Pages : 40
Book Description
Methods of controlling the trajectories of high-drag--low-lift vehicles entering the earth's atmosphere at angles of attack near 90° and at initial entry angles up to --3° are studied. The trajectories are calculated for vehicles whose angle of attack can be held constant at some specified value or can be perfectly controlled as a function of some measured quantity along the trajectory. The results might be applied in the design of automatic control systems or in the design of instruments which will give the human pilot sufficient information to control his trajectory properly during an atmospheric entry. Trajectory data are compared on the basis of the deceleration, range, angle of attack, and, in some cases, the rate of descent. The aerodynamic heat-transfer rate and skin temperature of a vehicle with a simple heat-sink type of structure are calculated for trajectories made with several types of control functions.
Author: John M. Eggleston Publisher: ISBN: Category : Space vehicles Languages : en Pages : 40
Book Description
Methods of controlling the trajectories of high-drag--low-lift vehicles entering the earth's atmosphere at angles of attack near 90° and at initial entry angles up to --3° are studied. The trajectories are calculated for vehicles whose angle of attack can be held constant at some specified value or can be perfectly controlled as a function of some measured quantity along the trajectory. The results might be applied in the design of automatic control systems or in the design of instruments which will give the human pilot sufficient information to control his trajectory properly during an atmospheric entry. Trajectory data are compared on the basis of the deceleration, range, angle of attack, and, in some cases, the rate of descent. The aerodynamic heat-transfer rate and skin temperature of a vehicle with a simple heat-sink type of structure are calculated for trajectories made with several types of control functions.
Author: John R. Ellis Publisher: Cambridge University Press ISBN: 9780131255500 Category : Computers Languages : en Pages : 552
Book Description
This book is a comprehensive approach for creating a real-time information processing system requirements model. The author guides the reader through the steps of objectifying real-time systems. He exemplifies the evolution of popular Real-Time Structured Analysis (RTSA) techniques into the object development era - Real-Time Object-Oriented Structured Analysis (RTOOSA).
Author: John M. Eggleston
Author: John M. Eggleston
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Author: John R. Ellis
Author: United States. Department of the Army
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Author: John Marshall Eggleston
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