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Author Topic: P-38 dive flaps produce no drag  (Read 13808 times)

Offline GScholz

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Re: P-38 dive flaps produce no drag
« Reply #15 on: March 12, 2014, 02:39:48 AM »
Unfortunately no...
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Offline FLS

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Re: P-38 dive flaps produce no drag
« Reply #16 on: March 12, 2014, 03:11:28 AM »
Quote from: BnZs on March 12, 2014, 01:52:18 AM
No. Just pointing out that  deceleration device is quite useful in ACM. It seems odd to me that HTC has overlooked this bit.

I doubt it's overlooked. Looking at parts of aircraft in isolation can be misleading.
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Offline GScholz

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Re: P-38 dive flaps produce no drag
« Reply #17 on: March 13, 2014, 02:34:51 PM »
It is physically impossible for it to not produce drag while being in an airflow.
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Offline GScholz

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Re: P-38 dive flaps produce no drag
« Reply #18 on: March 13, 2014, 02:37:15 PM »
The dive flaps have a deployed angle similar to the landing flaps of WWII fighters, and they're not that much smaller either, to some of the single-engine fighters. It must produce a lot of drag. If not then we're in flying Unicorn land, magic rainbows and all.

« Last Edit: March 13, 2014, 02:41:44 PM by GScholz »
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Offline Sunka

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Re: P-38 dive flaps produce no drag
« Reply #19 on: March 13, 2014, 03:09:36 PM »
I have nothing to add to this subject,i just want to stay up to date on it's development.
 :noid
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Offline FLS

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Re: P-38 dive flaps produce no drag
« Reply #20 on: March 13, 2014, 04:01:08 PM »
Here's a study of dive brakes and dive flaps. It's just a wing but it looks like a P-38 wing.

http://ntrs.nasa.gov/archive/nasa/casi.ntrs.nasa.gov/20030066111.pdf
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Offline olds442

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Re: P-38 dive flaps produce no drag
« Reply #21 on: March 13, 2014, 09:58:54 PM »
Quote from: CASHEW on March 10, 2014, 11:55:20 PM
Yeah hitech will fix this in the next millennium.
If all you do is complain trust me the door is that way --->
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Offline TwinBoom

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Re: P-38 dive flaps produce no drag
« Reply #22 on: March 14, 2014, 08:38:07 AM »
Worry about your luft iron leave my 38 alone. Practice in your birds and the 38s wont smoke ya
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Offline GScholz

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Re: P-38 dive flaps produce no drag
« Reply #23 on: March 14, 2014, 11:53:32 AM »
Funny. Adding drag to the dive flaps would aid the 38, not make it worse. If HTC changes it, you can thank me later.  :aok
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Offline Sunka

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Re: P-38 dive flaps produce no drag
« Reply #24 on: March 14, 2014, 11:55:49 AM »
Quote from: GScholz on March 14, 2014, 11:53:32 AM
Funny. Adding drag to the dive flaps would aid the 38, not make it worse. If HTC changes it, you can thank me later.  :aok
:aok
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Offline -ammo-

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Re: P-38 dive flaps produce no drag
« Reply #25 on: March 14, 2014, 01:27:32 PM »
FTR,  I did a quick test in the P-47M.  Offline, 50% fuel, at 500" AGL.  The AC actually gained 1 MPH IAS after deploying dive flaps.  Something isn't quite right



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Offline FLS

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Re: P-38 dive flaps produce no drag
« Reply #26 on: March 14, 2014, 01:54:44 PM »
Your true air speed didn't change.
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Offline GScholz

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Re: P-38 dive flaps produce no drag
« Reply #27 on: March 14, 2014, 02:01:14 PM »
Quote from: FLS on March 14, 2014, 01:54:44 PM
Your true air speed didn't change.

Yes it did. Just not enough to make it 335. There are decimals there, we just don't get to see them.
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Offline FLS

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Re: P-38 dive flaps produce no drag
« Reply #28 on: March 14, 2014, 02:06:30 PM »
Of course. What I meant was that the numbers showing the actual speed didn't change.
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Offline Triton28

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Re: P-38 dive flaps produce no drag
« Reply #29 on: March 14, 2014, 03:01:34 PM »
This discussion is silly.  True purveyors of twin engine pwnage fly the J or the G.   :rock

The only time the L is useful is when you want to chase down 190's and out roll their rolling stick stir.   :old:
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