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Author Topic: A-4 Skyhawk Rival designs  (Read 14192 times)

Offline Antonio

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A-4 Skyhawk Rival designs
« on: April 28, 2006, 08:10:07 am »
The A-4 skyhawk was a revolutionary design because Ed Heinemman's minimalistic approach to the subject but I have never found about the other and supposedly more classical rival designs.

Anybody can post information and pics?


Thanks,

Antonio
« Last Edit: May 01, 2006, 12:37:35 pm by overscan »

Offline TinWing

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Re: A-4 Rival designs
« Reply #1 on: April 28, 2006, 09:01:02 am »
The A-4 skyhawk was a revolutionary design because Ed Heinemman's minimalistic approach to the subject but I have never found about the other and supposedly more classical rival designs.


The A-4 apparently began as a Douglas funded fighter proposal.  After a successful presentation to a group of admirals, the USN wrote an attack aircraft specification around the Douglas proposal.  I'm not even sure that there were any "rival designs."

Offline PaulMM (Overscan)

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Re: A-4 Rival designs
« Reply #2 on: April 28, 2006, 09:15:05 am »
That was my understanding too.

Paul.
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Offline Antonio

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Re: A-4 Rival designs
« Reply #3 on: April 28, 2006, 10:14:25 am »
Very interesting

Thanks a lot!

Offline Matej

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Re: A-4 Skyhawk Rival designs
« Reply #4 on: August 19, 2006, 07:16:16 am »
Additional info: A-4 Skyhawk was derivate of Douglas Model 640 made by Ed Heinemann. And one surprise - model 640 was designed to operate from submarine! It had folding wings and tail and was able to land on the water. Than thanks to telescopic crane was moved back to submarine. I did also a simplified 3 view, because it is a part of my still unpubilshed research about flying submarines and submersible fighters.

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Offline Sentinel Chicken

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Re: A-4 Skyhawk Rival designs
« Reply #5 on: August 19, 2006, 07:27:51 am »
Interesting that the Skyhawk had its origins as a "sub fighter"- during the Vietnam War as well as through the 1960s in other areas of operation US Navy ASW carriers operated Skyhawks in squadrons designated "VSF" or just sub fighter to some.

Offline Antonio

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Re: A-4 Skyhawk Rival designs
« Reply #6 on: September 09, 2006, 01:54:19 am »
Tornado, from whatifmodelers forum posted drawings about this sub-fighter (altough he gives an  wrong design number)

this is the link to see the drawings

http://www.whatifmodelers.com/forum//index.php?showtopic=11959

Offline Hood

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Re: A-4 Skyhawk Rival designs
« Reply #7 on: September 09, 2006, 08:06:39 am »
The drawings are by me...my 'nom de plume' on the whatifmodelers forum is Tornado!

They are a what-if colour scheme, the first based on what they probably would have looked like in serivce and the second a complete what-if Vietnam scheme for behind the lines recon.

I was just about to post these pictures here but since someone else has I'll let you all enjoy the link! ;D

I admit the design number is wrong, I think I got it from an internet source some time back. Indeed info I have found since comes from 'Strike From Beneath the Sea' by Terry Treadwell (ISBN 0-7524-3275-3). Little more than an internal view and a simple data panel with simple sketch.

What engine was to be used to power this fighter?

Offline Antonio

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Re: A-4 Skyhawk Rival designs
« Reply #8 on: September 09, 2006, 01:44:32 pm »
Dear Tornado/Hood ;)

The Douglas Attack Aircraft 640 was powered by one Westinghouse J34-WE-36: 3,400 lb (15 kN) thrust (two JATO for take off).

http://www.shanaberger.com/engines/J34.htm

The D-640 design was iniciated in the late 40's according to Ed Heinemman's own words and was cancelled in 1952.

Cheers
Antonio


Source:
'Submarines with wings' by Terry Treadwell (ISBN 0-85177-369-9)

Offline hesham

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Re: A-4 Skyhawk Rival designs
« Reply #9 on: July 08, 2007, 10:45:30 am »
Hi,

I heard that the Martin-283 was from rivals designs to A-4,can
anyone confirm this ?.

Offline Michel Van

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Re: A-4 Skyhawk Rival designs
« Reply #10 on: August 31, 2007, 11:32:57 am »
Here Some Picture  i found on Submarine Aircraft Model 640
source : http://www.combatreform2.com/submarineaircraftcarriers.htm


« Last Edit: August 31, 2007, 11:37:00 am by Michel Van »
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Offline Just call me Ray

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Re: A-4 Skyhawk Rival designs
« Reply #11 on: August 31, 2007, 04:43:02 pm »
I don't know if it necessarily counts, but the A2D Skyshark was the original intended replacement for the Skyraider until canceled in favor of the Skyraider


http://www.globalsecurity.org/military/systems/aircraft/a2d.htm




It's a crappy self-made pic of a Lockheed Unmanned Combat Armed Rotorcraft (UCAR), BTW
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Offline Antonio

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Re: A-4 Skyhawk Rival designs
« Reply #12 on: August 31, 2007, 05:34:06 pm »
Douglas started studies for a T40 turboprop Skyrider but that studies shown that it was impossible to mach the cell with with such engine so a new cell (A2D) was developed.

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Re: A-4 Skyhawk Rival designs
« Reply #13 on: August 31, 2007, 10:51:54 pm »
The D-557C.


Offline KJ_Lesnick

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Re: A-4 Skyhawk Rival designs
« Reply #14 on: February 16, 2008, 09:06:45 am »
It started out as a fighter?  When? 

I thought it started out as an attack proposal that the USN wanted, and Douglas managed to make it half the weight of the requirement...


KJ_Lesnick