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首页> 外文期刊>The Aeronautical Journal >Utilising flight test telemetry data to improve store trajectory simulations
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Utilising flight test telemetry data to improve store trajectory simulations

机译：利用飞行测试遥测数据来改善商店轨迹模拟

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摘要

The Mk82 Joint Direct Attack Munition (GBU-38) is planned for carriage and employment on the F/A-18C aircraft from the outboard and inboard wing pylon stations and from the BRU-55 Smart Rack. Initial evaluation of the carriage loads and separation characteristics of the GBU-38 were accomplished through the analysis of wind tunnel test data. These data were acquired during a wind tunnel test using 6% scale models of the F/A-18C, GBU-38 and associated external fuel tanks, air-to-air stores, and air-to-ground stores. The test was conducted at the Veridian 8ft Transonic Wind Tunnel located in Buffalo, New York. Subsequently, the GBU-38 was certified for carriage and release from the F/A-18 aircraft by a series of flight tests. For the first flight where the store was released from the BRU-55, the wind tunnel captive trajectory system (CTS) data and NAVAIR pre-flight predictions showed no resemblance to the flight test data. The discrepancy was attributed to a rolling moment induced by the ejectors. NAVAIR's six-degree-of-freedom trajectory programme has been modified to correct for this effect. Comparisons with flight-test telemetry and photogrammetric test data show that the modification considerably improves the flight test/prediction correlation.
机译：Mk82联合直接攻击弹药（GBU-38）计划在F / A-18C飞机的机翼和机翼外挂架以及BRU-55智能机架上进行运输和使用。通过分析风洞测试数据，初步评估了GBU-38的运输负载和分离特性。这些数据是在风洞测试期间使用F / A-18C，GBU-38和相关外部油箱，空对空存储以及空对地存储的6％比例模型获取的。该测试在纽约布法罗的Veridian 8英尺跨音速风洞中进行。随后，通过一系列飞行测试，GBU-38获得了F / A-18飞机的运输和放行证明。对于从BRU-55释放商店的第一次飞行，风洞俘虏弹道系统（CTS）数据和NAVAIR飞行前的预测与飞行测试数据没有相似之处。差异归因于喷射器引起的滚动力矩。 NAVAIR的六自由度轨迹程序已被修改以纠正这种影响。与飞行测试遥测和摄影测量数据的比较表明，该修改大大改善了飞行测试/预测相关性。

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