Astrium has done considerable work already on the Romeo rocket engine that would power the climb to space, and wind tunnel testing has proven the aerodynamic shape.
The calculated piston wind velocity accords with the measured result on site through making a comparison with tunnelaerodynamic test data of real vehicles.
以实车的隧道空气动力学试验资料为参照进行对比计算，计算活塞风速度与实测结果较好符合。
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Therefore, lucubration of tunnelaerodynamic effect's mechanism and corresponding alleviation measure is very necessary.