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Computing an Energy-Maneuverability (E-M) Diagram for an Aircraft

I won't suggest using bank angle to calculate turn rate. The EM charts are for all bank angles, and is not limited to horizontal turn situations. However the calculations are usually done with an ...
LJQCN101's user avatar
  • 307
2 votes

Does weight of an aircraft affect its ability to pull G?

Short answer: A heavier weight, by loading more fuel or stores, decreases the ability of the same aircraft to pull more instantaneous Gs (available load factor) aerodynamically. The load factor in the ...
LJQCN101's user avatar
  • 307
0 votes

Does weight of an aircraft affect its ability to pull G?

The crux of the analysis seems to be the potential change in angle of attack from a straight and level flying condition (though other conditions are possible). All aircraft have a limit in their ...
Robert DiGiovanni's user avatar
8 votes
Accepted

Does weight of an aircraft affect its ability to pull G?

Statistics give a different picture: Smaller airplanes usually have lower wing loadings and higher G limits than heavier, larger ones. But the short answer is: You are right and the reasoning in the ...
Peter Kämpf's user avatar
1 vote
Accepted

How can I find the minimum and maximum airspeeds for efficiency with a specific prop/engine combination?

You may want to read this paper and examine how Norris and Bauer completed a flight performance assessment of a Luscombe 8E. The Luscombe would be an approximate 7/8 scale 180, just considering the ...
Thomas Perry's user avatar
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2 votes

How can I find the minimum and maximum airspeeds for efficiency with a specific prop/engine combination?

Here is a minor addition which might help a little. Knowing the prop diameter and the speed of sound, you can calculate the shaft RPM at which the prop tips go supersonic. When that happens (or ...
niels nielsen's user avatar
5 votes

How can I find the minimum and maximum airspeeds for efficiency with a specific prop/engine combination?

What you really need to do this analysis is a detailed propeller map and a detailed engine map. Then you can do some analysis to match them together and make your own combined map. Piston engine maps ...
Rob McDonald's user avatar
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2 votes

How does the lift-to-drag ratio depend on absolute sizes?

Does $\varepsilon$ or $C_{D,0}$ depend on absolute sizes? $\epsilon$ is in the range 0 to 1 and mainly depends on the spanwise lift distribution, so it does not directly depend on the global size of ...
sophit's user avatar
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2 votes

Why use the F-35

As always, with every high performance aircraft in the history of every...growing pains. Problems that will (hopefully/probably) be fixed. The Av-8B is a 50 year old design. Time to upgrade. Given the ...
WPNSGuy's user avatar
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