Browsing by Author "Hsu Chen"

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A Study on the High Energy Ballistics
(交大學刊編輯委員會, 1969-04)
陳煦
;
Hsu Chen
The purpose of this study is twofolds : to present systematically the development of such dynamics of motion as related to the external ballistics of long-range missiles, and to construct a gunnery table for the firing angle, angular range, altitude and flight time for firing velocities approaching the satellite region. The importance of this study is to treat the falling body problem as the motion which relates the transition from bound state to free state , and therefrom to calculate the firing angle and range as well as the time of flight in terms of the firing velocity. The scope of this study is limitted to the discussion under the following assumption, that the burn-out time for energizing the projectile is small compared to flight time, thatt the dissipative effect is ignored , that the spheroidalsphape of the earth and its nonuniform density is neglected, and that the coriolis force is not considered.
A Study on the Range and Accuracy of Long-Rang Ballistic Missiles
(交大學刊編輯委員會, 1971-04)
陳煦
;
Hsu Chen
The flight of a ballistic missile is idealized by the assumptions that the speed is acquired impulsively at sea level and that drag is absent. With practical long-range rockets the distance traversed under power is usually 5-10% of the total range, and the length of re-entry path in which drag is significant is even smaller. Consequently the impulsive assumption gives a good first approximation both for the range and for the impact errors of long-range rockets.