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为了提供航天飞机结构动特性的基本实验数据,进行了组装构型垂直地面振动试验(MVGVT)。在研制航天飞机载有各种有效载荷与执行各类任务时的载荷预示和设计、POGO控制以及颤振准则用的高置信度分析模型时使用了这些基本数据。 MVGVT计划包括两个基本构型。这两个试验构型分别模拟发射和助推状态。发射构型包括两个固体火箭助推器、一个外贮箱和一个轨道器。对发射构型,进行了在起飞和熄火(固体火箭助推器分离前)飞行条件下的试验。起飞试验在1978年10月20日开始,于1978年12月2日完成。熄火试验在1979年1月30日开始,于1979年2月28日完成。助推构型由外贮箱和轨道器OV-101组成。对助推构型,试验了三种飞行条件(开始助推,中间助推和终止助推)。助推试验在1978年5月30日开始,于1978年7月14日完成。航天飞机试验计划是在约翰逊宇航中心指导下,由洛克威尔国际公司执行的。在整个试验过程中,马歇尔宇宙飞行中心给予很大帮助。他们负责外贮箱、固体火箭助推器和航天飞机主发动机的动力数学模型。他们还参加了液氧箱的模态评定试验。对于航天飞机组装构型垂直地面振动试验,该中心负责发射和助推构型的支撑系统设计,并且还参加了试验计划与试验要求的制定,此外,马歇尔宇宙飞行中心还负责数据评定与分析相关研究。
In order to provide the basic experimental data of the dynamic characteristics of the space shuttle structure, the vertical ground vibration test (MVGVT) of assembled configuration was carried out. These basic data are used in the development of the spacecraft’s payload forecasting and design with various payloads and tasks to perform, POGO control, and high-confidence analysis models for flutter guidelines. The MVGVT program includes two basic configurations. The two experimental configurations simulate launching and boosting states, respectively. The launch configuration includes two solid rocket boosters, an outer tank and an orbiter. For the launch configuration, tests were performed on takeoff and flameout (before solid rocket booster separation) flight conditions. The take-off test began on October 20, 1978 and completed on December 2, 1978. The flameout test began on January 30, 1979 and completed on February 28, 1979. Booster configuration by the outer tank and tracker OV-101 composition. For booster configurations, three flight conditions were tested (start boost, mid boost, and stop boost). The boost test began on May 30, 1978 and completed on July 14, 1978. The shuttle test program was conducted by Rockwell International under the guidance of Johnson Space Center. Marshall Space Flight Center was instrumental in the entire experiment. They are responsible for the dynamic mathematical model of the outer tank, the solid rocket booster and the space shuttle’s main engine. They also participated in the liquid oxygen box modal assessment test. For the Vertical Ground Vibration Test of the Space Shuttle Assembly Configuration, the center is responsible for the design of launch and boost support systems and also for the design of test plans and tests. In addition, Marshall Space Flight Center is responsible for data evaluation and analysis the study.