23.04.2009, 10:34
Are you talking from outside the acft or inside? From years of experience working on jet powered acft, I can tell you the planes are quieter inside (i.e. little or no whine) than they are outside where the whine is rediculous. I will say this, there is a difference in the type engine installed to the amount of whine. For example: The T37 wasn't called "the Tweet" for nothing, very whinny engine. In comparison, the F-4 was rather quiet. That was because of the type engine the Phantoms had, the J-79. The F-15, on the other hand is equipped with the F-100-PW-* engines and they have a higher whine rate.
The above mentioned acft all flew axial flow engines. The F-80 and F-86 would have had the earlier centifigual engines. I believe those were quieter than the axial flow engines.
Could be wrong, but I think I'm at least close.
The above mentioned acft all flew axial flow engines. The F-80 and F-86 would have had the earlier centifigual engines. I believe those were quieter than the axial flow engines.
Could be wrong, but I think I'm at least close.