Density Altitude Nine Deadly Sins

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thump

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Feb 12, 2011
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135
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idaho
Good post. One of the best down to earth books I ever read on this subject is (Mountain Flying Bible) by Sparky Imeson the 490 page one. It's also set up for quick reference.
 

dino

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Sep 18, 2007
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florida
Excellent presentation. At minute 13:35, the diagram shows the minimum drag speed and max L/D to coincide. The maximum L/D should be to the right of the point shown. Graphically it can be derived by drawing a line through the origin (0,0) and extending it to the point of tangency to the polar curve. That point will be the best L/D speed and the slope of the drawn line will be the L/D value.

Dino
 

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dino

Well-Known Member
Joined
Sep 18, 2007
Messages
698
Location
florida
Now I see the graph has Drag on the vertical axis. I mistook it for a polar diagram with sink rate on the vertical. Anyway, max L/D should be to the right of minimum drag.
 

pic1083

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Joined
Jan 1, 2014
Messages
15
Location
Thermopolis, Wy
I attended Mr Anderson presentation many years ago. Learned a lot and have a VCR tape of the presentation. Your link is basically the same, but a more professional
production. I had intended on using it during ground school, if I ever started to teach. This link is one of the films he showed. Very enlightening.

https://www.youtube.com/watch?v=LzDSq6m2zV4
 
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