Comments on: MAN-MADE TORNADOES DRIVE ODD PLANE http://blog.modernmechanix.com/2008/02/26/man-made-tornadoes-drive-odd-plane/ Yesterday's tomorrow, today. Wed, 03 Dec 2008 03:54:23 +0000 http://wordpress.org/?v=2.6.2 By: Firebrand38 http://blog.modernmechanix.com/2008/02/26/man-made-tornadoes-drive-odd-plane/#comment-1047490 Firebrand38 Tue, 26 Feb 2008 23:08:06 +0000 http://blog.modernmechanix.com/2008/02/26/man-made-tornadoes-drive-odd-plane/#comment-1047490 But in a ducted fan engine that doesn't occur until high speeds. The Bell X-22 http://www.aerospaceweb.org/aircraft/research/x22/ used ducted fans for the higher thrust to weight ratio (and safety of aircraft carrier deck crews) I agree with you Stannous that this guys dream of high speed with ducted fans was just that...a dream. A technical report from the 60's is available here http://handle.dtic.mil/100.2/AD274589 But in a ducted fan engine that doesn’t occur until high speeds. The Bell X-22 http://www.aerospaceweb.org/aircraft/research/x22/ used ducted fans for the higher thrust to weight ratio (and safety of aircraft carrier deck crews)

I agree with you Stannous that this guys dream of high speed with ducted fans was just that…a dream.

A technical report from the 60’s is available here http://handle.dtic.mil/100.2/AD274589

]]> By: Stannous http://blog.modernmechanix.com/2008/02/26/man-made-tornadoes-drive-odd-plane/#comment-1047468 Stannous Tue, 26 Feb 2008 17:38:47 +0000 http://blog.modernmechanix.com/2008/02/26/man-made-tornadoes-drive-odd-plane/#comment-1047468 While blowing air into a Venturi tube will increase its velocity the increased drag will more than reduce its resulting thrust. While blowing air into a Venturi tube will increase its velocity the increased drag will more than
reduce its resulting thrust.

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