It is shown that aerospike nozzle performance losses caused by free stream primarily result from increase of lift body base drag and decrease of plugpressure distribution.
结果表明，外流造成的性能损失主要体现在运载器底部阻力增加和塞锥表面压强降低两方面。
2
We plug in all the numbers, and we get that the total pressure is now 0.685 bar.
把这些数都代入方程，总气压等于0。685巴。
3
In a diesel engine, there is no spark plug. Instead, diesel fuel is injected into the cylinder, and the heat and pressure of the compression stroke cause the fuel to ignite.