Author Topic: random stats  (Read 1775 times)

Offline F4UDOA

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« Reply #45 on: December 19, 2000, 09:37:00 AM »
Ctibria,

Why don't you try getting some test data on the stall of the P-38 in AH, both 1G and 3G accelerated and compare it to a reliable source of test data, say the P-38 pilots manual (Which can be ordered online).

Have you done these test?? Do you know what the answers are? If you don't know I suggest you find out and then re-post. Until then it is just whining.

Later
F4UDOA

BTW, I have a copy of the manual and there may be an error in the AH FM but I don't fly the 38 so I'm not sure.

Offline Citabria

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« Reply #46 on: December 19, 2000, 10:16:00 AM »
F4DOA your kidding right?
 http://bbs.hitechcreations.com/smf/Smileys/default/Forum9/HTML/000864.html

um... ive tested the #@!#@ P-38L over and over.

P-38L loadout:
100% fuel
200rpg 50cal, 150rds 20mm
no external ordnance

top speeds wep/mil 1.04 AH P-38L vs AH chart

30k 400wep, 385 (chart 405wep, 390)
25k 415wep, 390 (chart 415wep, 400)
20k 395wep, 385 (chart 403wep, 388)
15k 385wep, 370 (chart 387wep, 372)
10k 370wep, 360 (chart 374wep, 360)
05k 355wep, 345 (chart 357wep, 345)
00k 345wep, 330 (chart 345wep, 332)


time to climb, feet per minute, mil power
01k 0:18 3333
02k 0:37 3158
03k 0:56 3158
04k 1:15 3158
05k 1:35 3000 4-6k avg: 3053 chart 3200
06k 1:55 3000
07k 2:14 3158
08k 2:35 2857
09k 2:55 3000
10k 3:16 2857 9-11k avg: 2952 chart 3050
11k 3:36 3000
12k 3:58 2727
13k 4:20 2727
14k 4:42 2727
15k 5:05 2609 14-16k avg: 2648 chart 2850
16k 5:28 2609
17k 5:51 2609
18k 6:15 2500
19k 6:40 2400
20k 7:05 2400 19-21k avg: 2369 chart 2600
21k 7:31 2307
22k 7:58 2222
23k 8:25 2222
24k 8:53 2069
25k 9:22 2069 24-26k avg: 2024 chart 2300
26k 9:53 1935
27k10:25 1875
28k11:01 1667
28k11:40 1538
30k12:23 1395 29-31k avg: 1394 chart 1700
31k13:11 1250

time to climb, feet per minute, WEP
01k 0:17 3529
02k 0:34 3529
03k 0:50 3750
04k 1:07 3529
05k 1:24 3529   4-6k avg: 3529 chart 3700
06k 1:41 3529
07k 1:58 3529
08k 2:15 3529
09k 2:32 3529
10k 2:50 3333  9-11k avg: 3398chart 3500
11k 3:08 3333
12k 3:27 3158
13k 3:46 3158
14k 4:06 3000
15k 4:26 3000 14-16k avg: 3000 chart 3200
16k 4:46 3000
17k 5:07 2857
18k 5:28 2857
19k 5:50 2727
20k 6:13 2609  19-21k avg: 2648 chart 2800
21k 6:36 2609
22k 7:00 2500
23k 7:25 2400
24k 7:51 2308
25k 8:19 2143 24-26k avg: 2150 chart 2350
26k 8:49 2000
27k 9:21 1875
28k 9:55 1765
29k10:33 1579
30k11:15 1428 29-31k avg: 1428 chart 1700
31k12:02 1276

               

               

http://home.worldonline.dk/~winthrop/p38op7.html

HT was meaning to look into the P-38 FM was curious if there is any word on it.

I was reading the operating manual for the P-38 particularly the stall/spin section and dive flaps section:

   
Quote
STALLS

a. With power off., the airplane stalls at the following air speeds and gross weights noted.

                         15,000 lbs 17,000 lbs 19.000 lbs
Flaps and landing gear up 94 mph 100 mph  105 mph
Flaps and landing gear DOWN 69 mph 74 mph  78 mph

b. As stalling speed is approached, the centre section stalls first with noticeable shaking of the airplane, however the ailerons remain effective.

c. In either power ON or power OFF stalls with flaps and landing gear up the airplane rushes straight forward in a well controlled stall. With flaps and landing gear down there appears to be a slight tendency for one wing to drop. There is however no tendency to spin. Under these conditions, the nose drops slightly and as the speed increases, the wing will come up.

d. On airplanes equipped with rocket installation the stall characteristics are the same.

SPINS

a. Spin Characteristics

The spin is fast, but recovery is prompt and easy if the proper technique is used.

b. Recovery

The airplane can be brought out of the spin any time by kicking full rudder against the spin for a minimum of half a turn then easing forward the control column. The procedure is as follows:

1. Close throttles.

2. If flaps are down pull them up.

3. KICK FULL RUDDER AGAINST THE SPIN AS BRISKLY AS POSSIBLE, WAIT AT LEAST HALF A TURN BEFORE ATTEMPTING TO PUSH THE WHEEL FORWARD. Recovery is slower by one turn with flaps down. If the flaps are down or on their way up the rudder should be held against the spin for at least one full turn before pushing the column forward.

4. After half a turn, with rudder full over the control wheel may be eased forward as the rotation stops. Recovery can be accomplished in one-and-a-half turns under any condition except with flaps down when two turns will be required. The airplane will come out of the spin in a vertical dive and recovery from the dive should be made slowly in order to avoid a highspeed stall which may cause a spin in the opposite direction. Any attempt to push the wheel forward before kicking full opposite rudder will immediately increase the speed rotation and the acceleration to which the pilot is subjected. If this is encountered pull the wheel full back and hold full rudder against the spin for a minimum of half a turn. Then push the control column forward.

DIVE RECOVERY FLAPS

The airplane without these flaps becomes very nose heavy and starts to buffet above diagram dive speeds (Dia.2.). The dive recovery flaps which are installed under the wings between the booms and tile ailerons restore the lift to this portion of the wing and thus cause the uncontrollable nose heaviness to occur at a higher speed. The flaps also add some drag to the airplane which in conjunction with the higher allowable dive speed permits safer dives at a much steeper diving angle. The dive recovery flaps should be extended before starting the dive or immediately after the dive is started before a buffeting speed has been reached. If the airplane is buffeting before the dive recovery flaps are extended the buffeting will momentarily increase and then diminish. With these flaps extended, the nose heaviness is definitely reduced but the diving speed should never be allowed to exceed the placard by more than 15 or 20 mph. With the dive recovery flaps extended before entering the dive, angles of dive up to 45 degrees may be safely accomplished. Without dive recovery flaps extended the maximum angle for extending dives is 15 degrees. Diving characteristics are better with power off than power on.

the 1.03 stall model was more in line with the p38 stall but still wasn't great. now with 1.04 our AH p-38 will always torque roll to the right and directly into a spin. the P-38 should have no tendancy to spin in a level stall if both wings are stalled equally. but in AH there is no way to get a full blown stall without spinning.


also dive flaps should induce a 10 degree nose up attitude at low speeds with the excess lift and drag they create but in our AH p38 their is no nose up tendancy and no noticeable drag from the flaps.




[This message has been edited by Citabria (edited 12-19-2000).]
Fester was my in game name until September 2013

Offline juzz

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« Reply #47 on: December 19, 2000, 07:28:00 PM »
It's not just an issue with the Lightning.

All planes in AH will drop one wing in a stall, regardless of configuration, engine(s) on or off, etc...

Offline Westy

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« Reply #48 on: December 20, 2000, 08:23:00 AM »
 The fight was between Galland in a 190-D9 and Lt Col Lowell of the 364th FG, 384th F.S in a P-38. It turned into a viscious turn fight down on the deck over a quarry of some kind.
 Coincidently I've been trying to find this story this last week too for my archives. It was online once at the www.fighteraces.com  site but they do nota archive online and it was at least a year or two ago that it was up there.
 Galland and Lowel met several years later and  when Lowell was reteling the story Galland looked at him and said Lowell had damned near killed him.
 
 Lowell had 12.5 kills in the war. Galland had how many?    

 Only reason I add that was to show that pilot skill was not determined by kill numbers and also the combat further proves it is the pilot and not so much the plane. Although I'd hate like hell to be in a Buffaloe against a Zero  

   -Westy

Offline RAM

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« Reply #49 on: December 20, 2000, 09:29:00 AM »
   
Quote
Originally posted by Westy:
The fight was between Galland in a 190-D9 and Lt Col Lowell of the 364th FG, 384th F.S in a P-38. It turned into a viscious turn fight down on the deck over a quarry of some kind.
 Coincidently I've been trying to find this story this last week too for my archives. It was online once at the www.fighteraces.com  site but they do nota archive online and it was at least a year or two ago that it was up there.
 Galland and Lowel met several years later and  when Lowell was reteling the story Galland looked at him and said Lowell had damned near killed him.
 

No doubt he was almost killed...Galland TURNFIGHTED a P38 in a D9, on the deck ?

Heh...guess he thought he still was on a 109F    ...no doubt he was almost killed, the 190s NEVER have turned exactly well ,yah know...

Now seriously, is the first time I heard of Galland riding a 190 in real combat. how many times did he do that?...was he experienced in the cockpit of a 190?...because only a unexperienced pilot would try to do that...


[This message has been edited by RAM (edited 12-20-2000).]

[This message has been edited by RAM (edited 12-20-2000).]

Nath-BDP

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« Reply #50 on: December 20, 2000, 12:10:00 PM »
I doubt that story is true. It is highly rare that Galland flew a D9.

Offline Westy

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« Reply #51 on: December 20, 2000, 12:24:00 PM »
 I had thought it was RALL. But I've had three people tell me it was Galland. And the story is true, regardless of who the pilot was. Whether you beleive it or not really doesn't matter. Although I do wonder a bit if it being true puts some kind of a tarnish on your vision of how uber the Arian pilots just had to have been. Right Nath?

 As for it being a 190-D9. Well? The D-9 was better than the USAAF aircraft at the lower alts right? I mean hasn't that been what many folks have been saying here for at least a year?

  -Westy

Nath-BDP

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« Reply #52 on: December 20, 2000, 12:56:00 PM »
Go away Westy... if you have a problem with me then say it outright don't insult me with little remarks about me being a pro-nazi.

I'm not sure what your problem with me is but your little pre-pube girlish comments are getting on my last nerve.

[This message has been edited by Nath-BDP (edited 12-20-2000).]

Offline Westy

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« Reply #53 on: December 20, 2000, 01:45:00 PM »

 Jawohl Herr Nath!!!!

<arm shoots straight out>

<heels click together sharply>

 "Sieg Help!"


[This message has been edited by Westy (edited 12-20-2000).]

funked

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« Reply #54 on: December 20, 2000, 02:33:00 PM »
I've heard that same story but with about 5 different Allied pilots' names and about 3 different German pilots' names...

Offline Dead Man Flying

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« Reply #55 on: December 20, 2000, 06:03:00 PM »
 
Quote
Originally posted by funked:
I've heard that same story but with about 5 different Allied pilots' names and about 3 different German pilots' names...

I guess that kind of thing happened all the time then...

-- Todd/DMF

funked

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« Reply #56 on: December 20, 2000, 10:29:00 PM »
Yep, just like that guy who strapped rockets on his car, and the fried rat at KFC, and the alligators in the sewer.  

Offline ispar

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« Reply #57 on: December 21, 2000, 08:29:00 PM »
The P-38 was not discontinued as an A2A fighter in Europe because of performance. It was because of A: Maintenance. It was so good in the PTO because of much lower alt fights. It didn't have to freeze. B: Production cost. The P-51 was cheaper. Period.

Performance? The P-38 outturned German planes at ALL altitudes. It was faster than any Me-109's. G10? Maybe it wasn't faster, eh? 109s were for the most part aerodymanically inferior to their American counterparts.

Nath-BDP

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« Reply #58 on: December 21, 2000, 09:19:00 PM »
The P38 you're speaking of is a fantasy plane.

Offline juzz

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« Reply #59 on: December 21, 2000, 09:44:00 PM »
I'd like to see a 450mph P-38...