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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: Ahron Bregman Publisher: Routledge ISBN: 1351873644 Category : History Languages : en Pages : 532
Book Description
From the end of the Second World War and throughout the era that came to be known as the Cold War, the Middle East was a battleground for Great Power rivalries and constant wars. These were fought between Israelis and Arabs, Arabs and Iranians, Arabs and Arabs and also between regional players and outside powers; the region was also the scene of several intense civil wars and insurgencies. The essays gathered in this volume focus on some of the most important facets of these Middle Eastern conflicts. Following a general introduction, the essays are then organised under three major sections. The first focuses on the Arab-Israeli conflict; the second on the Gulf Wars, and the third section concentrates on insurgencies. Together, these essays, all of which were written by leading experts, will provide the reader with a good introduction to warfare in the modern Middle East and show how conflict has shaped the region.
Author: Mike Bechthold Publisher: University of Oklahoma Press ISBN: 0806157860 Category : Biography & Autobiography Languages : en Pages : 297
Book Description
Canadian-born flying ace Raymond Collishaw (1893–1976) served in Britain’s air forces for twenty-eight years. As a pilot in World War I he was credited with sixty-one confirmed kills on the Western Front. When World War II began in 1939, Air Commodore Collishaw commanded a Royal Air Force group in Egypt. It was in Egypt and Libya in 1940–41, during the Britain’s Western Desert campaign, that he demonstrated the tenets of an effective air-ground cooperation system. Flying to Victory examines Raymond Collishaw’s contribution to the British system of tactical air support—a pattern of operations that eventually became standard in the Allied air forces and proved to be a key factor in the Allied victory. The British Army and Royal Air Force entered the war with conflicting views on the issue of air support that hindered the success of early operations. It was only after the chastening failure of Operation Battleaxe in June 1941, fought according to army doctrine, that Winston Churchill shifted strategy on the direction of future air campaigns—ultimately endorsing the RAF's view of mission and target selection. This view adopted principles of air-ground cooperation that Collishaw had demonstrated in combat. Author Mike Bechthold traces the emergence of this strategy in the RAF air campaign in Operation Compass, the first British offensive in the Western Desert, in which Air Commodore Collishaw’s small force overwhelmed its Italian counterpart and disrupted enemy logistics. Flying to Victory details the experiences that prepared Collishaw so well for this campaign and that taught him much about the application of air power, especially how to work effectively with the army and Royal Navy. As Bechthold shows, these lessons learned altered the Allied approach to tactical air support and, ultimately, changed the course of the Second World War.
Author: John M. Eggleston
Author: John M. Eggleston
Author: John R. Ellis
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Author: United States. Department of the Army
Author: John Marshall Eggleston
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Author: 
Author: Ahron Bregman
Author: Mike Bechthold
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