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首页> 美国政府科技报告 >ANALYSIS OF THE TRAJECTORY AND LARGE-AMPLITUDE MOTIONS OF A SCOUT VEHICLE DURING FOURTH-STAGE REENTRY FLIGHT
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ANALYSIS OF THE TRAJECTORY AND LARGE-AMPLITUDE MOTIONS OF A SCOUT VEHICLE DURING FOURTH-STAGE REENTRY FLIGHT

机译：第四阶段再造飞行中车辆轨迹和大幅度运动的分析

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The fourth stage of a Scout vehicle experienced large-amplitude oscillations due to motor failure at an altitude of about 635,000 feet and a velocity of 17,800 feet per second. Radar lost the vehicle during the event- This investigation was undertaken to determine the accuracy of generating the trajectory, to analyze the motions, and to determine the type of motor failure during fourth-stage thrusting flight by using accelerometer and rate-gyro data as inputs in a digital computer program. The program, which is described herein, was based on six degrees of freedom and a spherical rotating earth.nThe generated trajectory variables for three sets of initial conditions agreed exceptionally well with those from radar. The computed forces, moments, and space motions gave a logical explanation of the type of motor failure. Errors in initial conditions, based on roll position, had a noticeable effect on the vehicle motions during the last 2.5 seconds of flight when the angular rates were large and oscillatory.

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