Author Topic: DON'T MISS THIS THREAD on energy!  (Read 2484 times)

Beurling

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DON'T MISS THIS THREAD on energy!
« Reply #45 on: February 10, 2001, 11:11:00 AM »
Badz andy and dwarf nice thread!

What fine minds you all have
Now what names do you all fly under?

Why cant i find you under the score page?


EYE

Offline Seeker

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« Reply #46 on: February 10, 2001, 03:06:00 PM »
Badboy wrote:

 "Try to help, and look what happens. I have a feeling my first two Aces High articles may be my last."

I don't believe it.

Firstly, because he knows full well that his work has helped far too many people to be left undone.

Secondly, if we couldn't shut him up in Airwarrior, I doubt that you silence him here :-)

The whole argument has become much too rareified.

I gather the impression that a (superficialy) simple question was being asked by some one who wanted simple guidelines on how best to fly in the arena. Much of the effort spent here would require far too much "head down" time to be of use for the majority of us.

Both proponants seem to be saying the same thing, albeit in a perhaps over academic way.

There still remains an important point:

 What do I, as a total dweeb actualy do with stick in hand to use this newfound knowledge? There's no "sweetspot" graduation on the airspeed gauge.....



Offline Dwarf

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« Reply #47 on: February 11, 2001, 12:24:00 AM »
 
Quote
Originally posted by Seeker:

There still remains an important point:

 What do I, as a total dweeb actualy do with stick in hand to use this newfound knowledge? There's no "sweetspot" graduation on the airspeed gauge.....


There really isn't anything you can do with it.  I've spent a fair amount of time testing to try to find the high speed sweet spot in the P-51D and was unsuccessful.  I suspect that the already known max ROC speed for each aircraft is as good as it gets.

Dwarf

Offline Lephturn

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« Reply #48 on: February 11, 2001, 07:18:00 AM »
What's not known, at least by me, is what speed the best climb-rate can be attained at for my plane.

I'd love to know what the best climb-speed curve looks like from SL to say 30k in the Jug.  I would think that speed would go up, the higher you get... correct?

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Offline Dwarf

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« Reply #49 on: February 11, 2001, 03:21:00 PM »
 
Quote
Originally posted by Lephturn:
What's not known, at least by me, is what speed the best climb-rate can be attained at for my plane.

I'd love to know what the best climb-speed curve looks like from SL to say 30k in the Jug.  I would think that speed would go up, the higher you get... correct?


I think you'd have to acquire a pilot's manual for the P-47 and then fly according to the climb regime outlined there to know for sure what speed and rate you'd realize at any given altitude.  Manifold pressure reductions along the way are probably mandated.

As I understand things, indicated airspeed should decay with alt (for constant power operation).

Dwarf

Offline Badboy

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« Reply #50 on: February 11, 2001, 05:25:00 PM »
 
Quote
Originally posted by Lephturn:
What's not known, at least by me, is what speed the best climb-rate can be attained at for my plane.

I'd love to know what the best climb-speed curve looks like from SL to say 30k in the Jug.  I would think that speed would go up, the higher you get... correct?


Actually, I have always produced diagrams like this one:

 

They are automatically produced at the same time as the EM diagrams, they show the speed for best climb rate and top speed. Normally a complete analysis for an aircraft would include a set of EM diagrams for various weights and altitudes, along with the Pa Pr diagrams. However, because of the bandwidth required for these diagrams and the relatively small amount of info, I don't normally bother to use them, I just put the info into a data plate.

Anyway, when you have a set of those, you get the variation of climb rate and best climb speed with altitude.

Hope that helps...

Badboy

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