What if

Picture Post => Current and Finished Projects => Aircraft => Topic started by: Librarian on August 13, 2013, 02:39:12 PM

Title: EF7F-4 Samcat
Post by: Librarian on August 13, 2013, 02:39:12 PM
No idea where I'm going with this but was inspired by a Look & Learn painting of the Convair Charger. Going to be Marines, anti-SAM vehicle (but might wander off somewhere else ;D).

(https://www.whatifmodellers.com/proxy.php?request=http%3A%2F%2Fi1357.photobucket.com%2Falbums%2Fq756%2Flibrarian2%2FP1050716_zpsd8018d39.jpg&hash=f11e2d53671e7ca53fd3a55f995c0ceef56a3df0) (http://s1357.photobucket.com/user/librarian2/media/P1050716_zpsd8018d39.jpg.html)

(https://www.whatifmodellers.com/proxy.php?request=http%3A%2F%2Fi1357.photobucket.com%2Falbums%2Fq756%2Flibrarian2%2FP1050715_zps91fd1b4b.jpg&hash=5651185a35b6bbbe13d710cbcd705f9cca378ac0) (http://s1357.photobucket.com/user/librarian2/media/P1050715_zps91fd1b4b.jpg.html)

I swore I'd stick to semi-reality....... :banghead:.
Title: Re: EF7F-4 Samcat
Post by: buzzbomb on August 13, 2013, 04:20:42 PM
 :thumbsup:like the layout on this
Title: Re: EF7F-4 Samcat
Post by: kerick on August 13, 2013, 08:08:51 PM
Reality!...What a concept!  (Robin Williams, must give credit for stolen joke).
Go your own way with this, we'll be watching and cheering you on.
Title: Re: EF7F-4 Samcat
Post by: nighthunter on August 13, 2013, 09:00:30 PM
I'll cheer you on, I love the look of it!
Title: Re: EF7F-4 Samcat
Post by: PR19_Kit on August 14, 2013, 03:56:48 AM
That's intriguing, but what is it built from, I can't recognise ANY of the bits?  :o
Title: Re: EF7F-4 Samcat
Post by: Dizzyfugu on August 14, 2013, 04:43:38 AM
This looks lovely!  :thumbsup: Looking forward to see what becomes of it - Sweet!  :wub:
Title: Re: EF7F-4 Samcat
Post by: TallEng on August 14, 2013, 05:01:34 AM
Quote from: PR19_Kit on August 14, 2013, 03:56:48 AM
That's intriguing, but what is it built from, I can't recognise ANY of the bits?  :o

Most of it looks like its from a Tigercat of some mark or another?

And as a thought, it might look better if the main planes have the
Same sweep back as the canards?
Looking forward to seeing it finished :thumbsup:

Regards
Keith
Title: Re: EF7F-4 Samcat
Post by: Librarian on August 14, 2013, 06:54:04 AM
So far it's all F7F-3N with a rear cap made from a radome of some sort...I think it was from an ancient Matchbox Privateer I built donkeys back. The rear canopy will be from the salvaged remains of the F-84 I used earlier; fits like a glove.
Title: Re: EF7F-4 Samcat
Post by: Librarian on August 14, 2013, 06:55:54 AM
Quote from: Librarian on August 14, 2013, 06:54:04 AM
So far it's all F7F-3N with a rear cap made from a radome of some sort...I think it was from an ancient Matchbox Privateer I built donkeys back. The rear canopy will be from the salvaged remains of the F-84 I used earlier; fits like a glove.

...and canards salvaged from the F8F :thumbsup:.
Title: Re: EF7F-4 Samcat
Post by: Tophe on August 14, 2013, 07:27:46 AM
 :wub: I love it! ¨mease go on... :thumbsup:
Title: Re: EF7F-4 Samcat
Post by: Librarian on August 14, 2013, 12:58:22 PM
Just a quick question all you aeronautically knowledgable people. At present it looks as though the canards are going to sit directly in front of the engine cowlings. Will this affect engine performance on a piston powered unit...I think they'd play merry havoc with a jet intake? Help me keep the whiff realistic...please... ;).
Title: Re: EF7F-4 Samcat
Post by: wuzak on August 14, 2013, 11:41:49 PM
Quote from: Librarian on August 14, 2013, 12:58:22 PM
Just a quick question all you aeronautically knowledgable people. At present it looks as though the canards are going to sit directly in front of the engine cowlings. Will this affect engine performance on a piston powered unit...I think they'd play merry havoc with a jet intake? Help me keep the whiff realistic...please... ;).

I would be more worried about longitudinal stability. The distance between the elevators (on the canards) and the centre of lift looks to be quite small.

The canard's wake could affect prop efficiency and engine cooling.

The XB-35 had severe prop vibration issues due to the wake from the trailing edge of its wing. But its wing was somewhat thicker and would have a larger effectthan your canards.
Title: Re: EF7F-4 Samcat
Post by: Old Wombat on August 15, 2013, 12:47:06 AM
From memory, the forward-canted wings of sailplanes & gliders are designed that way to draw turbulence ("wing-tip vortex") in towards the fuselage, rather than out to the wing-tips where it can cause flutter. Perhaps by reversing the canards, so that they mimic the wings of the EF7F-4, at least some of the potential for interference with the props will be reduced. :blink:

:cheers:

Guy
Title: Re: EF7F-4 Samcat
Post by: PR19_Kit on August 15, 2013, 03:32:20 AM
AFAIK the sweep forward on some gliders does do that but the main reason for the sweep is to get the CG in the right place, especially with two-seaters.

The Duo-Discus that I've flown in the past has it's CG almost immediately behind the rear seat and the overall centre of lift is slightly behind that. The main reason for that positioning is that the structure is so light these days that the crew are the primary mass of the aircraft when it's flying.

The Duo has all sorts of other aerodynamic trickery to sort out the vortex issue, mini-winglets and double cambered outer wing sections etc.

(https://www.whatifmodellers.com/proxy.php?request=http%3A%2F%2Fimg827.imageshack.us%2Fimg827%2F4743%2Fwqfy.jpg&hash=4877f39cc5e1f6c4813161d0a7d49b68b8c82ec2)
Title: Re: EF7F-4 Samcat
Post by: Librarian on August 15, 2013, 03:41:26 AM
Many thanks to all for the input, very helpful :thumbsup:. I think I've arrived at a comprise between the short fuselage/ CG and reality. Post an update later.
Title: Re: EF7F-4 Samcat
Post by: Librarian on August 15, 2013, 02:09:04 PM
Not much to report but first coat of paint is on....switched over to USAF scheme as the Marines green is bringing back bad memories of Japanese aircraft :-\.

(https://www.whatifmodellers.com/proxy.php?request=http%3A%2F%2Fi1357.photobucket.com%2Falbums%2Fq756%2Flibrarian2%2FP1050717_zps2569ae73.jpg&hash=f623ef74e689571c0b9bb51dff714318745d18ba) (http://s1357.photobucket.com/user/librarian2/media/P1050717_zps2569ae73.jpg.html)

(https://www.whatifmodellers.com/proxy.php?request=http%3A%2F%2Fi1357.photobucket.com%2Falbums%2Fq756%2Flibrarian2%2FP1050718_zps610571d7.jpg&hash=8a7e5da0c8e80885212820484107b25931d4b837) (http://s1357.photobucket.com/user/librarian2/media/P1050718_zps610571d7.jpg.html)

I've shortened the canards, reasoning that a short length of fuselage with elevators at front would require less force and area to have effect. She'll probably have a couple of Shrikes but a profusion of ECM equipment.... ;D
Title: Re: EF7F-4 Samcat
Post by: NARSES2 on August 16, 2013, 07:17:53 AM
Now that almost looks like a shot from a modern production line where they've used different coloured primers  :thumbsup: Don't think they use Tamiya tape though  ;D
Title: Re: EF7F-4 Samcat
Post by: Librarian on August 16, 2013, 03:06:14 PM
Essentially complete, less armament. Varnishing in progress and a couple exploratory decals...should be complete tomorrow:

(https://www.whatifmodellers.com/proxy.php?request=http%3A%2F%2Fi1357.photobucket.com%2Falbums%2Fq756%2Flibrarian2%2FP1050827_zps21f30a35.jpg&hash=aad4526cd90223fd4c2e019380e7543ab7172568) (http://s1357.photobucket.com/user/librarian2/media/P1050827_zps21f30a35.jpg.html)

(https://www.whatifmodellers.com/proxy.php?request=http%3A%2F%2Fi1357.photobucket.com%2Falbums%2Fq756%2Flibrarian2%2FP1050828_zps13b2092b.jpg&hash=5d1df8e8aa217be81efa6fe69638ebec8a0ccc46) (http://s1357.photobucket.com/user/librarian2/media/P1050828_zps13b2092b.jpg.html)

(https://www.whatifmodellers.com/proxy.php?request=http%3A%2F%2Fi1357.photobucket.com%2Falbums%2Fq756%2Flibrarian2%2FP1050830_zpsc642a8e4.jpg&hash=9c24c020f34d6f3fd0fea51a3bd5d6cc302ced46) (http://s1357.photobucket.com/user/librarian2/media/P1050830_zpsc642a8e4.jpg.html)

Too many ECM lumps and bumps :rolleyes:?
Title: Re: EF7F-4 Samcat
Post by: kerick on August 16, 2013, 06:26:28 PM
Needs a bunch of antenna of every description. This is very original, I love it!
Title: Re: EF7F-4 Samcat
Post by: Old Wombat on August 16, 2013, 08:21:31 PM
All-Weather COIN/COIN-ECM-Support - the more sensor & ECM bumps & antennae the better! :thumbsup:

:cheers:

Guy
Title: Re: EF7F-4 Samcat
Post by: Librarian on August 17, 2013, 10:36:05 AM
Well she's finished. Lots of ECM, two shrikes and a HARM. A 20mm in the port root for self defence. I think the plan is she goes in with the A-25Ks etc to help jam and attack the increasingly powerful SAM threat. Heat seeker SAMs are another matter.... ;).

(https://www.whatifmodellers.com/proxy.php?request=http%3A%2F%2Fi1357.photobucket.com%2Falbums%2Fq756%2Flibrarian2%2FP1050832_zpsbb98134e.jpg&hash=874f8c1c22568dbc18f8089e26162cbd281e4f18) (http://s1357.photobucket.com/user/librarian2/media/P1050832_zpsbb98134e.jpg.html)

(https://www.whatifmodellers.com/proxy.php?request=http%3A%2F%2Fi1357.photobucket.com%2Falbums%2Fq756%2Flibrarian2%2FP1050833_zps02675282.jpg&hash=186799e0f1589881ac71f6ccec84495b90cd67db) (http://s1357.photobucket.com/user/librarian2/media/P1050833_zps02675282.jpg.html)

(https://www.whatifmodellers.com/proxy.php?request=http%3A%2F%2Fi1357.photobucket.com%2Falbums%2Fq756%2Flibrarian2%2FP1050834_zps258ea009.jpg&hash=948d58242974a58475fab28bc32f565fd954e73d) (http://s1357.photobucket.com/user/librarian2/media/P1050834_zps258ea009.jpg.html)

(https://www.whatifmodellers.com/proxy.php?request=http%3A%2F%2Fi1357.photobucket.com%2Falbums%2Fq756%2Flibrarian2%2FP1050836_zpsb986326a.jpg&hash=c58387e9fec91645a5abe53a5a36b4ed23d332dd) (http://s1357.photobucket.com/user/librarian2/media/P1050836_zpsb986326a.jpg.html)

Got to take the family to the Costa Brava now so see you all in a coupla weeks with perhaps the Gunship ;D.
Title: Re: EF7F-4 Samcat
Post by: Old Wombat on August 17, 2013, 11:38:29 AM
Very nice! Very nice, indeed! :thumbsup:

:cheers:

Guy
Title: Re: EF7F-4 Samcat
Post by: Logan Hartke on August 17, 2013, 12:05:35 PM
Just brilliant.  Real expert work.

Cheers,

Logan
Title: Re: EF7F-4 Samcat
Post by: PR19_Kit on August 17, 2013, 04:56:25 PM
Amazing, and such a fast build too!  :thumbsup: :bow:
Title: Re: EF7F-4 Samcat
Post by: NARSES2 on August 18, 2013, 08:13:08 AM
Oh that is so nice  :bow:
Title: Re: EF7F-4 Samcat
Post by: jsport on August 27, 2013, 06:07:54 AM
amazing work :thumbsup: :thumbsup: :thumbsup:
Title: Re: EF7F-4 Samcat
Post by: Captain Canada on September 09, 2013, 01:21:56 PM
Weird....cool, but weird !

Title: Re: EF7F-4 Samcat
Post by: Tophe on September 15, 2013, 07:49:25 PM
Delicious shame, confirmed on the finished model :wub:
Title: Re: EF7F-4 Samcat
Post by: Librarian on October 09, 2013, 04:39:20 AM
Another slight upgrade. Didn't like the vertical stabs so I've lowered them and added 20 and 40 shot flare tubes :

(https://www.whatifmodellers.com/proxy.php?request=http%3A%2F%2Fi1357.photobucket.com%2Falbums%2Fq756%2Flibrarian2%2FP1050868_zps5ab0c74f.jpg&hash=9aec00814727cb0bdaff043cec05d1b0a7038b9a) (http://s1357.photobucket.com/user/librarian2/media/P1050868_zps5ab0c74f.jpg.html)
Title: Re: EF7F-4 Samcat
Post by: Army of One on October 09, 2013, 06:22:51 AM
Great stuff.....!!! Lovely build and finish..... :thumbsup: