Why does supersonic flight detach airflow from a wing?
2014年5月23日 · Now something odd happens: Supersonic flow accelerates further when subsonic flow would decelerate. This is caused by the change in density which is dominant at …
Can a convergent nozzle be used for a supersonic jet engine?
2015年3月26日 · For example, at 700°C the speed of sound in air is 625 m/s. Since thrust is mainly determined by the difference in entry and exit speeds of the air flowing through an …
aircraft design - Why is the Tu-95 so efficient despite having ...
2015年10月21日 · The tips of the fan blades of a modern turbofan also move at supersonic speed, so the supersonic propellers on the Tu-95 do not create a direct disadvantage. By …
why lift coefficient decreases at supersonic flow?
2023年10月7日 · Also at supersonic speed this sudden change in speed comes with a relevant change in pressure (lower on the upper surface; higher on the bottom) but this time the …
supersonic - Is there a limit to the possible altitude for electric ...
2018年2月11日 · Supersonic speed helps to fly high - while subsonic designs run into the coffin corner, supersonic flight helps to maintain high dynamic pressure even at altitude. However, …
How does the drag coefficient behave at transonic and supersonic …
2021年8月10日 · Individual designs might still look quite different; for the F-16, for example, the drag coefficient triples between sub- and supersonic speed and stays roughly constant …
About ramjet efficiency in supersonic speed. Is there an optimal …
2019年12月27日 · The reason the efficiency increases with supersonic speed to an optimal value then decreases is related to the combustion speed. The burn flame in the combustion …
Why do turbofan blade tips exceed the speed of sound while prop …
2015年10月23日 · The plot for fan blades would look not much different. The very thin, uncambered airfoil of a supersonic propeller and the added wave drag lower the maximum …
f 22 - How can one achieve supersonic cruise capabilities without ...
2020年8月30日 · A supercruise engine must deliver supersonic exhaust flow without using an afterburner. Luckily, in a hot gas the speed of sound is much higher than in a cold gas. So as …
Why can't jet engines operate with supersonic air and how do they …
2014年10月12日 · Note that the high circumferential speed of a large fan blade will still mean that its tips work at around Mach 1.5, but the subsequent compressor stages will operate in …