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Author Topic: attn:murdr,widewing and all other p-38 jocks  (Read 1422 times)

Offline df54

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attn:murdr,widewing and all other p-38 jocks
« on: April 30, 2009, 04:14:08 PM »
Read Corky Meyer:

At the Joint Army/Navy Fighter Conference on October 16, 1944, I tested the P-38L dive-recovery flap well in excess of its 0.65 Mach-number limit. Upon actuation, they instantly provided a smooth, 4G recovery without pilot effort. Immediately after I evaluated these "jewels," they were installed on all Grumman 17817-1 Bearcat fighters.

No pilot effort--the nose pitched up from deployment of the dive recovery flaps--around 10-20degrees pitch up.
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Offline Widewing

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Re: attn:murdr,widewing and all other p-38 jocks
« Reply #1 on: April 30, 2009, 07:34:48 PM »
The AH2 P-38L has the dive recovery flaps.... They just don't work....

Manual trim, trimmed neutral. Dive from 20k, throttles to idle, deploy recovery flaps before compressing... P-38 dives straight into the ground.


My regards,

Widewing
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My regards,

Widewing

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Offline StokesAk

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Re: attn:murdr,widewing and all other p-38 jocks
« Reply #2 on: April 30, 2009, 10:04:57 PM »
IIRC, the L's flaps only work after you have compressed. I also heard somewhere that they will help you turn within a smaller margin.
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Offline Widewing

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Re: attn:murdr,widewing and all other p-38 jocks
« Reply #3 on: April 30, 2009, 11:29:24 PM »
Quote from: StokesAk on April 30, 2009, 10:04:57 PM
IIRC, the L's flaps only work after you have compressed. I also heard somewhere that they will help you turn within a smaller margin.


If you dive from 20k, you will be locked up in compression very quickly. Deploying the flaps before or after entering compression makes no difference. You have to use elevator trim to recover.

Any thought that they improve turning is an illusion. They do nothing but add a small amount of drag.

Test it yourself offline.....


My regards,

Widewing
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My regards,

Widewing

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Offline Banshee7

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Re: attn:murdr,widewing and all other p-38 jocks
« Reply #4 on: April 30, 2009, 11:41:03 PM »
P-38L, Spawn from A3 SW in the TA, 30k air spawn over A1...dive down, don't use dive flaps, and can still maintain timing so I can pull out right before I hit the ground  :D
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Offline Serenity

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Re: attn:murdr,widewing and all other p-38 jocks
« Reply #5 on: April 30, 2009, 11:45:52 PM »
Quote from: Banshee7 on April 30, 2009, 11:41:03 PM
P-38L, Spawn from A3 SW in the TA, 30k air spawn over A1...dive down, don't use dive flaps, and can still maintain timing so I can pull out right before I hit the ground  :D

And your point is...

The point the OP and Widewing have made, I believe, is that the P-38s dive brakes do not work the way they should.
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Offline Captain Virgil Hilts

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Re: attn:murdr,widewing and all other p-38 jocks
« Reply #6 on: May 01, 2009, 07:05:45 AM »
First off, compression should not be an issue below 20K feet, but it is. You should not even need dive flaps below 20K feet.

Second, the dive flaps, and they are dive flaps, NOT dive brakes, do not perform as they are supposed to, in any part of the flight envelope
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Offline Stoney

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Re: attn:murdr,widewing and all other p-38 jocks
« Reply #7 on: May 01, 2009, 11:45:57 AM »
Quote from: Captain Virgil Hilts on May 01, 2009, 07:05:45 AM
First off, compression should not be an issue below 20K feet, but it is.

How so?  Are you saying that the P-38 cannot exceed critical mach below 20,000 feet?
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Offline Ack-Ack

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Re: attn:murdr,widewing and all other p-38 jocks
« Reply #8 on: May 01, 2009, 12:12:33 PM »
Quote from: Stoney on May 01, 2009, 11:45:57 AM
How so?  Are you saying that the P-38 cannot exceed critical mach below 20,000 feet?

In real life, yes.


ack-ack
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Offline df54

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Re: attn:murdr,widewing and all other p-38 jocks
« Reply #9 on: May 01, 2009, 03:06:04 PM »
   

    since this is a major bug in the fm will hi tech fix it. After all we are all paying for accurate flight models.
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Offline df54

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Re: attn:murdr,widewing and all other p-38 jocks
« Reply #10 on: May 01, 2009, 03:22:57 PM »
 

   It appears that dive flaps arent extending at all. The light in cockpit is on and auto trim on manual. No extension through keyboard command or button mapped on joystick.
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Offline moot

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Re: attn:murdr,widewing and all other p-38 jocks
« Reply #11 on: May 01, 2009, 03:28:29 PM »
They retract automatically above a certain speed, from what I've heard.
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Offline Widewing

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Re: attn:murdr,widewing and all other p-38 jocks
« Reply #12 on: May 01, 2009, 04:27:51 PM »
Quote from: moot on May 01, 2009, 03:28:29 PM
They retract automatically above a certain speed, from what I've heard.

The Fowler flaps retract, but the Dive Recovery flaps do not.



My regards,

Widewing
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My regards,

Widewing

YGBSM. Retired Member of Aces High Trainer Corps, Past President of the DFC, retired from flying as Tredlite.

Offline Stoney

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Re: attn:murdr,widewing and all other p-38 jocks
« Reply #13 on: May 01, 2009, 04:48:29 PM »
Quote from: Ack-Ack on May 01, 2009, 12:12:33 PM
In real life, yes.


ack-ack

What's the in-game issue then?
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Offline AWwrgwy

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Re: attn:murdr,widewing and all other p-38 jocks
« Reply #14 on: May 01, 2009, 05:08:41 PM »
Quote from: df54 on May 01, 2009, 03:06:04 PM
   

    since this is a major bug in the fm will hi tech fix it. After all we are all paying for accurate flight models.

I got my game for free.

 :D

I pay $16.02 a month for online access to the arenas.


wrongway
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