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ZG77_Nagual
11-05-2003, 04:12 PM
While back we had a nice thread on here about the p39 - in which it was said to have very good high-speed elevator response. Is this something you guys have taken a look at?
Just to know /i/smilies/16x16_smiley-happy.gif

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ZG77_Nagual
11-05-2003, 04:12 PM
While back we had a nice thread on here about the p39 - in which it was said to have very good high-speed elevator response. Is this something you guys have taken a look at?
Just to know /i/smilies/16x16_smiley-happy.gif

http://pws.chartermi.net/~cmorey/pics/whiner.jpg

ZG77_Nagual
11-06-2003, 04:34 AM
nudge

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ZG77_Nagual
11-06-2003, 08:35 PM
Bump - last try /i/smilies/16x16_smiley-happy.gif

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XyZspineZyX
11-06-2003, 10:41 PM
Oh the P-39 was a glorious thing back in IL-2. . .what a marveloous bird. . .


oh. . ahh. . bump

S!
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XyZspineZyX
11-06-2003, 10:45 PM
curious, from naca reports, elevator response at high speed was not so good...

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XyZspineZyX
11-06-2003, 11:13 PM
Yes, not good at all.
From NACA report on P-39N tested at 15000ft.

Up to 290mph indicated a force of 4 lb per each G was required (so aprox 30 lb were required to move the elevators in a 7G turn at that speed).

When 350mph was reached 45 lb per each G were required. This is already a stiff elevator. Just for a 2G dive pull up at that speed 90 lb were necessary.

At 460mph P-39 will need 61.5 lb for each G, an enormous force.

This is why they were restricted in russian service to the same low speed in dive as russian fighters. I can search for the value if it is necessary. There were many accidents in russian service caused by distorted elevators due to high forces in dive pull ups.

Compared to this you could black out in a Bf-109 in a high speed dive pull-out. Damaging the controls was a danger though (like for any other high speed diver).


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Message Edited on 11/06/0305:14PM by Huckebein_FW

XyZspineZyX
11-06-2003, 11:53 PM
How about stall/spin chatracter of P-39? In FB now you can fly in P-39 and don't much worry about stall/spin (not more than other plane). With flaps combat is even better. Much difficult plane to fly is P-40 and you must carefully fly because these bird like stall and spin. I thought that should be opposite?
Anyway somebody to know how handle P-40 with high speed? Now in FB above 400 km/h is very hard to manoeuvre and about 500 km/h it's near impossible to do any manoeuvre.

ZG77_Nagual
11-07-2003, 12:04 AM
Heres what I found for the mustang

"I have data that indicates that the
P-51D, at corner speed, measures 48 lbs in a 3g pull. Up to 86 Lbs at
5g's. The P-47D, OTOH, requires just 16 lbs at 3g and 27 lbs at 5g's.
The testers state that the Mustang was a true "two hander"."

The figures you mention, Huck - are quite doable - in fact the Blue Angels F-18s require 30lbs of pull just to resist the forward movement of the stick in level flight. This would seem to indicate the 39 might be undermodeled in this respect.

!oops - re-read - 45lbs PER G - my mistake - that is pretty heavy - which does support the current modeling


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Message Edited on 11/06/0306:05PM by ZG77_Nagual

XyZspineZyX
11-07-2003, 12:48 AM
ZG77_Nagual wrote:
- !oops - re-read - 45lbs PER G - my mistake - that is
- pretty heavy - which does support the current
- modeling

It does?/i/smilies/16x16_smiley-very-happy.gif Ok I don't want to upset you.

But tell what's the source for those numbers on Mustang and P-47? I'm quite interested in them.


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ZG77_Nagual
11-07-2003, 10:17 PM
Sorry so late Huck

here is the site - just look down for plane names - alot of interesting stuff from some very knowlegeable people. In some cases pilots who flew them.

http://www.yarchive.net/mil/

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XyZspineZyX
11-07-2003, 10:21 PM
ZG77_Nagual wrote:
- Sorry so late Huck
-
- here is the site - just look down for plane names -
- alot of interesting stuff from some very
- knowlegeable people. In some cases pilots who flew
- them.
-
- http://www.yarchive.net/mil/


Thanks Nag, I'll look into it/i/smilies/16x16_smiley-happy.gif


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ZG77_Nagual
11-07-2003, 10:38 PM
You won't like the 109 thread /i/smilies/16x16_smiley-happy.gif But the others are very good - esp the P38.

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XyZspineZyX
11-08-2003, 12:09 AM
I am not an expert, but no matter how hard I try, I find it extremely difficult now to enter a spin in P39 (all versions). This is, at least, inconsistent with what's written in the view objects.

Would it be possible to take a look into this?

ZG77_Nagual
11-08-2003, 01:20 AM
If you have the beta - it's much easier - generally at lower/mid speeds.

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