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Forum: Tech Log

20th Oct 2008, 02:48

Replies: 82

Total drag questions

Views: 10,934

Posted By balsa model

Ooops.. I see it now: post #14. Sorry, it...

Ooops.. I see it now: post #14. Sorry, it didn't get through to me, at the time - I was too focused on question 1 controversy.
Honestly though, we might have to deduct some points for saying...

Forum: Tech Log

19th Oct 2008, 03:23

Replies: 82

Total drag questions

Views: 10,934

Posted By balsa model

My answer - assuming that we are comparing climbs...

My answer - assuming that we are comparing climbs of equal RoC - nope.
The parasitic drag components will remain unchanged (no change in speed). The induced drag of the slower case will go down...

Forum: Tech Log

18th Oct 2008, 02:40

Replies: 82

Total drag questions

Views: 10,934

Posted By balsa model

for discussion purposes: Lift, Weight, Thrust, and Drag vectors in climb

http://img230.imagevenue.com/loc437/th_97275_lift-in-climb_122_437lo.jpg (http://img230.imagevenue.com/img.php?image=97275_lift-in-climb_122_437lo.jpg)

Geometrically, it would appear that in...

Forum: Tech Log

17th Oct 2008, 19:53

Replies: 82

Total drag questions

Views: 10,934

Posted By balsa model

Ignoring changes in air density, at constant IAS,...

Ignoring changes in air density, at constant IAS, AoA is a fuction of required lift. Since we have shown (some disagree) that in climb, required lift is lower, the answer must be:
AoA will increase...

Forum: Tech Log

17th Oct 2008, 03:16

Replies: 82

Total drag questions

Views: 10,934

Posted By balsa model

my turn

CJ: I think that you might have made a manipulation mistake with your vectors or the trig.
With your definitions (and references), I get:
L = W*cos(angleofclimb),
D = T - W*sin(angleofclimb)...

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