Author Topic: P-47 flaps  (Read 13646 times)

Offline Stoney

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Re: P-47 flaps
« Reply #60 on: June 23, 2011, 09:49:18 PM »
That would depend on type of flaps, wouldn't it? For example type of flaps which can maintain boundary layer a bit longer and delay flow separation at high AoA.

Theoretically its possible, but since none of the aircraft in-game have those types of flaps, I didn't think it was relevant to the discussion.
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Offline 2bighorn

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Re: P-47 flaps
« Reply #61 on: June 23, 2011, 10:03:25 PM »
Theoretically its possible, but since none of the aircraft in-game have those types of flaps, I didn't think it was relevant to the discussion.

P-38 and Ki-84 for example, both fowler and butterfly types help with boundary layer, not as much as slotted flaps, but still, both increase stall AoA for a few degrees.


Offline Stoney

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Re: P-47 flaps
« Reply #62 on: June 23, 2011, 11:13:12 PM »
I suppose I should have taken the time to draw my own graphics.
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Offline LThunderpocket

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Re: P-47 flaps
« Reply #63 on: June 24, 2011, 12:43:07 AM »
you also arent suppost to do slip landings with flaps down in 172s.but ive done em before
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Offline Stoney

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Re: P-47 flaps
« Reply #64 on: June 24, 2011, 09:51:34 AM »
you also arent suppost to do slip landings with flaps down in 172s.but ive done em before

Totally and completely irrelevant to the discussion we're having here.
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Offline LThunderpocket

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Re: P-47 flaps
« Reply #65 on: June 24, 2011, 10:14:03 AM »
Totally and completely irrelevant to the discussion we're having here.
point is,just because its not in the flight manual doesnt mean u cant do it.
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Offline Charge

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Re: P-47 flaps
« Reply #66 on: June 24, 2011, 03:05:21 PM »
I find it curious that if manual says: "Do not extend flaps above 195mph!" people say that it means the pilot is not supposed to extend full flaps.
I don't know about you guys, but if I were a pilot student and read that, I'd take it means: do not extend ANY flaps above 195mph.

Hell, maybe it's just badly written manual. Did anybody read them anyway? :rolleyes:

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Offline FLS

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Re: P-47 flaps
« Reply #67 on: June 24, 2011, 03:30:30 PM »
I find it curious that if manual says: "Do not extend flaps above 195mph!" people say that it means the pilot is not supposed to extend full flaps.
I don't know about you guys, but if I were a pilot student and read that, I'd take it means: do not extend ANY flaps above 195mph.

Hell, maybe it's just badly written manual. Did anybody read them anyway? :rolleyes:

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I think the confusing part is that it was listed under "landing" and there was no speed limit mentioned in the section describing flaps operation. The similar P-51 manual lists the speed limit for full flaps under "landing".

Offline Stoney

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Re: P-47 flaps
« Reply #68 on: June 24, 2011, 04:42:31 PM »
I find it curious that if manual says: "Do not extend flaps above 195mph!" people say that it means the pilot is not supposed to extend full flaps.
I don't know about you guys, but if I were a pilot student and read that, I'd take it means: do not extend ANY flaps above 195mph.

Ok, then I guess that takes care of the FW190, Bf109, P-38 and P-51.  All we really need is the primary documentation that HTC used to decide that the P-47 shared basically the same maneuvering flap deployment speeds of the Pony.

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Offline Krusty

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Re: P-47 flaps
« Reply #69 on: June 24, 2011, 10:19:06 PM »
Might explain why Jugs were noted by the Luftwaffe to be significantly less manuverable than other craft, if they weren't using any flaps above 195mph?

Offline Stoney

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Re: P-47 flaps
« Reply #70 on: June 24, 2011, 11:06:33 PM »
Might explain why Jugs were noted by the Luftwaffe to be significantly less manuverable than other craft, if they weren't using any flaps above 195mph?

Krusty, do you honestly think HTC would have flap speeds modeled in a manner that wasn't consistent with documentation, after all 800 flap speed threads that have occurred on this board?
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Offline colmbo

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Re: P-47 flaps
« Reply #71 on: June 25, 2011, 10:54:55 AM »

Why would that make a difference?



Quite common in many makes of aircraft to have different limit speeds for different flap deflections.  As an example the Cessna P206 (1968) lets you put the first 10 degrees of flap out at 160mph while for full flaps you have to slow to 110mph.

Flap limit speeds may be based on more than just the "strength" of the flap itself...the deployment mechanism may be the limiting factor.
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Online icepac

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Re: P-47 flaps
« Reply #72 on: June 25, 2011, 11:28:56 AM »
Colmbo is correct.

Maybe HTC could allow higher speeds for deployment but have them snap right off the plane (one at a time) when you go over the critical speed.

Offline Stoney

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Re: P-47 flaps
« Reply #73 on: June 25, 2011, 01:26:29 PM »
Colmbo is correct.

Maybe HTC could allow higher speeds for deployment but have them snap right off the plane (one at a time) when you go over the critical speed.

With respect Icepack, seeing how you haven't been around for long, this issue has been debated probably as much or more than anything else on this forum.  Obviously from Dtango's quote, since at least 2006 (when I started playing) and before then even I'm sure.  HTC has always had a very definite policy on how flap speeds are implemented, and they continue to follow that.  Your idea has been suggested before.  Now, if someone can provide new documentation to HTC regarding flap deployment in any aircraft, I'm sure they'd be more than interested and willing to change how they are modeled.  Barring that documentation, its not going to change, unless they change their policy.
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Offline FLS

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Re: P-47 flaps
« Reply #74 on: June 25, 2011, 03:58:28 PM »
Colmbo is correct.

Maybe HTC could allow higher speeds for deployment but have them snap right off the plane (one at a time) when you go over the critical speed.

The manual for the P-47B stated that hey wouldn't snap off they would blow up. If they blew up asymmetrically you'd have a control issue.    :joystick: