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Forum: Private Flying

25th Mar 2014, 23:50

Replies: 18

VMP VMD contradiction? Please help!

Views: 12,410

Posted By Mach Jump

Keith, Beagle To most people, the suggestion...

Keith, Beagle

To most people, the suggestion that it takes less fuel to overcome more drag is, on the face of it, perverse.

I don't think it's about calculus, or counting squares. What people...

Forum: Private Flying

23rd Mar 2014, 17:00

Replies: 18

VMP VMD contradiction? Please help!

Views: 12,410

Posted By Mach Jump

Beagle. My days of differential calculus...

Beagle.

My days of differential calculus are very long ago, and little used since.:\

I'm reminded of a story told by (or about) Former Master of the Rolls, Lord Denning.

The Judge had...

Forum: Private Flying

23rd Mar 2014, 03:21

Replies: 18

VMP VMD contradiction? Please help!

Views: 12,410

Posted By Mach Jump

http://selair.selkirk.bc.ca/training/aerodynamics/...

http://selair.selkirk.bc.ca/training/aerodynamics/graphics/drag-power1.gif

Right, got it now.

The drag, and thrust required curves are the same, but the power required curve is not. (see above...

Forum: Private Flying

23rd Mar 2014, 00:07

Replies: 18

VMP VMD contradiction? Please help!

Views: 12,410

Posted By Mach Jump

Here are a couple of posts from the archive on...

Here are a couple of posts from the archive on the subject. see what you make of them.

I'm with you guys. I can't quite see why the Power Required, Thrust Required, and Total Drag curves are...

Forum: Private Flying

22nd Mar 2014, 23:01

Replies: 18

VMP VMD contradiction? Please help!

Views: 12,410

Posted By Mach Jump

You can't. Unless you have a very strange...

You can't.

Unless you have a very strange engine that has an increasing fuel flow with reducing thrust, VMD=Max End Speed. (Assuming we're working with the same kind of speed in both instances,...

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