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Old 19th May 2006 | 13:17
  #12 (permalink)  
Old Smokey
 
Joined: Jun 2004
Posts: 1,843
Likes: 0
From: Australia
Mutt,

I believe that Old_smokey stated that EVERY airliner he had ever flown flew FASTER than the Mcrit

I've been mis-quoted!!!!

What I said was "ALL cruise Mach Numbers are above Mcrit, even Maximum Range Cruise". I could also have said "ALL cruise at a CAS are below Mcrit, even Maximum Range Cruise".

Yep, I'll have to stick to my original quote, when at a Pressure Height where the tangent of the line drawn to the Drag Curve from the 0/0 origin is below Mcrit, then we cruise at a CAS. When at a Pressure Height where the tangent of the line drawn to the Drag Curve from the 0/0 origin is above Mcrit, then we cruise at a Mach Number. So, if I'm cruising at a Mach Number (and not a CAS), I'm above Mcrit, and this is the case 99% of the time. Once in a while we get a low and slow sector.

Regards,

Old Smokey

Last edited by Old Smokey; 19th May 2006 at 14:37.
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