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Author Topic: What exactly is a "stable gun platform"?  (Read 478 times)

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cestode

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What exactly is a "stable gun platform"?
« on: September 30, 2021, 11:55:50 PM »

Hi,

I'm pretty new to WWII aircraft and terminology and have been enjoying reading up on the various planes. I occasionally see planes, such as the Hawker Hurricane, described as a stable gun platform. I'm curious about what exactly that means. Intuitively, I would guess that some planes fly smoother and are easier to aim. Is that correct? Was gun stability a major problem for the engineers to deal with? Are there any planes known to be really poor gun platforms?

Anyways, thanks in advance for the feedback. This community has been really helpful to me as I've started this hobby.
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SAS~Storebror

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Re: What exactly is a "stable gun platform"?
« Reply #1 on: October 01, 2021, 01:19:05 AM »

Your guess is correct.
A stable gun platform is a plane that doesn't react too nervous on stick inputs and which doesn't have excessive adverse effects from gun recoil or aerodynamic side effects from e.g. explosive gases leaving the barrel.

The hurricane was pretty stable in flight and did react quite precisely on stick inputs.
A good contrast would be early spitfires: They've been tending to exaggerate control inputs, the gun recoil was off the plane's centerline and aerodynamic wash over the wing surface caused them to spread their bullets all over the place.

]cheers[
Mike
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BalDaddy

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Re: What exactly is a "stable gun platform"?
« Reply #2 on: October 01, 2021, 02:38:20 AM »

Further to mike's observations.
The Hurricane was a 'stable gun platform' in comparison to the Spitfire due to it's stiff wing with four guns each side grouped close together just outboard of the airscrew arc.
The Spitfire wing flexed more in combat manoeuvres and due to it's wide spacing of it's guns there was more scattering of rounds at point of convergeance.
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bomberkiller

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Re: What exactly is a "stable gun platform"?
« Reply #3 on: October 01, 2021, 07:08:32 AM »

...young Spitfires are sprayers!

Best regards, Gerhard  :)
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cestode

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Re: What exactly is a "stable gun platform"?
« Reply #4 on: October 01, 2021, 09:38:10 AM »

Thanks guys. That makes sense. I had never considered things like wing flex or gun spacing. This stuff is so fascinating!
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SAS~tsisqua

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Re: What exactly is a "stable gun platform"?
« Reply #5 on: October 01, 2021, 09:48:54 AM »

Here's a good example, but I may be prejudiced ;)


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SAS~Storebror

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Re: What exactly is a "stable gun platform"?
« Reply #6 on: October 01, 2021, 10:13:49 AM »

That one's particularly stable in a high-speed dive :P
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SAS~tsisqua

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Re: What exactly is a "stable gun platform"?
« Reply #7 on: October 01, 2021, 10:35:30 AM »

That one's particularly stable in a high-speed dive :P

Ahaha!!!!!
Yes it is.
A guy named Ernest Fiebelkorn managed to bend the airframe of a J model and was the only
survivor of a full-blown compressibility  dive. At least to my knowledge.
Dive with flaps. :P
Bird
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pied

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Re: What exactly is a "stable gun platform"?
« Reply #8 on: October 01, 2021, 12:39:34 PM »

"A stable gun platform", an aircraft that Pied is not the pilot of!! :P
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bomberkiller

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Re: What exactly is a "stable gun platform"?
« Reply #9 on: October 01, 2021, 01:02:02 PM »

Now I understand why all P-38s are my favorite aircrafts - after the Bf-109s of course.

 ]cheers[

Gerhard
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Bsmooth

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Re: What exactly is a "stable gun platform"?
« Reply #10 on: October 16, 2021, 12:52:04 PM »

Early models had an issue with tail flutter as well, which caused the tail section to vibrate and sometimes just break up.
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