高超音速的心脏

库布其

"The GE-90 has a fan diameter of 3124 mm and a rotational speed of 3475 RPM. Their circumferential velocity is d·π·57.917 = 568 m/s or Mach 1.67 at sea level and ISO atmosphere."

# N) c- y! n# @2 U' E% N所以我想，亚音速进气，是指的空气流动，火焰传播是亚音速的，叶片和空气的相对速度，是可以超音速的。