avatar_Sentinel Chicken

What if the A-5 stayed on as an attack bomber?

Started by Sentinel Chicken, January 05, 2006, 09:13:09 AM

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Sentinel Chicken

This was one of my favorite kitbash projects of all time. I used the ARII 1/144 scale RA-5C Vigilante kit as the basis for what a modernized heavy attack Vigilante might look like. I won first in the scale back about 4 years ago at the North Central Texas IPMS show.



Overview shot. Basically it has the following features:

-Reprofiled nose radome for the terrain-following/attack radar
-More sturdy nose gear to handle the increased gross weight
-LANTIRN pods under each engine intake
-A multitude of ECM/EW antennas all over the airframe
-Paveway III series 2000 lb laser-guided bombs, 2 under each wing
-Light outboard pylon for self-defense Sidewinder missiles
-Chaff/flare launchers on the aft fuselage decking



Side/top elevation. The camouflage is the same as is used on the US Navy's F/A-18 Hornet fleet, using three FS standard colors of gray. Markings were a combination of 1/144 scale F-15 decals (for the low-voltage formation lighting) and 1/72 scale USN Hornet markings. I modified the decals so they were for a fictional squadron VA-25 (which in reality is VFA-25 "Fist of the Fleet") embarked on the USS Constellation. I got a bit more silvering than I cared to have, but it's tolerable to me.



Underside view. I deleted the distinctive ventral canoe of the RA-5C as that house reconnaissance systems. I thought at first about belly pylons, but after more research found that the main landing gear wells occupied a significant portion of the underfuselage. The baseline ARII kit has crappy landing gears, so I scratch built landing gear wells and doors and used a 1/44 scale F/A-18 Hornet nose gear.

I then added several little vents/air scoops all along the underfuselage where the engine bays would be and weathered the hell out of it. You can also see the LERXes on the sides of the engine intakes, the LANTIRN pods (came from a 1/144 F-15E Strike Eagle kit), and some of the ECM/EW antennas on the nose. I even crafted little pitot probes to replace the displaced pitot from the nose cone in the baseline kit.

The LGBs I'm proud of. All of them are scratchbuilt and hand-painted. The Sidewinders and their launchers came from another ARII kit.



Front quarter eye level shot. You can see the LANTIRN pods and how I adjusted the "sit" of the aircraft to reflect a more stout landing gear. The real RA-5C sat nose high- it was the one aspect Vigi crews hated about the plane, the cockpt was so far up.



Head on shot. This highlights the LERXes and the weapon pylons nicely. I don't particularly care about detailing the cockpits, so I usually spray the cockpit transparencies with a dullcote before an overspray of light gloss.

Some thoughts on the engines:

The final version of the Vigilante, the RA-5C (actually a misnomer as there were two versions of the C, the latter version was different enough it was to have been the RA-5D) had two General Electric J79-GE-10s with 17,860 lbs of thrust each. I would imagine that between the last C variants coming off the line to the present, there would have to be a gradual shift from the older J79s to a turbofan. Yes, I've actually been trying to come up with a hypothetical service history of the modernized attack Vigilante.......so the way I see it, the -10 variant of the J79 had pretty much been tweaked out for more power- the ultimate versions of the J79 would have only given any modernized Vigilante less than another 500 lbs thrust per engine.

The F404 would have been the most logical choice, as it was developed as a turbofan derivative of the J79 to replace the latter engine. That's what the "legacy" Hornets use. But the thrust available is only about 16,000 lbs for the F404-400 and 17,700 lbs for the uprated F404-402. Given that combat aircraft gain weight during their service lives as equipment gets added, either we'd have to accept lower performance from a modernized Vigilante or find a more powerful engine even though the F404-402 is close to the thrust levels of the J79.

So I imagine some sort of interim version between the RA-5C and my "Vigilante 2000" that might have used either the F404 and accepted the performance/payload penalty or stuck with the J79.

The F414-GE-400 would be my preferred engine in this bird. With 22,000 lbs of thrust, two of those should be enough for this bird to bore holes in the sky. This brings up an interesting point. One of the reasons carrier captains didn't like the Vigilante much was that it was a pain in the donkey to change the engines. In the RA-5C, you had to slide the J79 out the back and that took up a lot of room in the hangar deck. So any upgraded Vigilante follow on is gonna have to have a drop-down engine and ventral bay doors to be practical.

Some thoughts on the linear weapons bay:

The orignal attack Vigilante had a linear bomb bay that was between the engines and the nuke was kicked out the back after popping off the tail cone. Not very practical. The RA-5Cs used the bomb bay to carry fuel tanks and if they weren't secured/connected properly, they'd fall out the back during a catapult shot with some very fiery results on the deck (pics of this have to be seen to be believed).

Given that an interim Vigilante between the RA-5C and my hypothetical construct would be saddled with underpowered engines as it grew in weight, I would go for an empty bay in that version and in my current version the bay would get re-utilized for fuel tanks. I can just picture some wicked cost-overruns to engineer a bomb bay with ventral doors.

Radish

Once you've visited the land of the Loonies, a return is never far away.....

Still His (or Her) Majesty, Queen Caroline of the Midlands, Resident Drag Queen

Damian2

#2
OMG!!!

HAtchet and I were talking about that just the other day! Right down to the load out and chosen squadron (btw its my fav USN squadron!!) which would become VAH-25...

She's a beaut and hopefully I'll be able to do one myself in 1/48 sometime!

:wub:
Try not. Do. Or do not. There is no try.

Bryan H.

WHOA!!!  That's sweet!  :wub: The mods look great.  

How about some sort of semi-recessed "bomb troughs" to avoid potential cost overruns involved with installing a ventral internal bomb bay.  If "bomb troughs" work it would increase the payload, minimise drag penalties and avoid a massive internal rework.

:cheers: Bryan

Miscellany (that effects modeling):
My son & daughter.
School - finishing my degree

Models (upcoming):
RCN A-4F+ ArcticHawk

Hobbes

Wow! Great result in 144. The weathering looks very believable, too. And a great backstory to boot.

And what about that runway? Did you create it, or did you cut and paste a photo of a real runway?  

Ian the Kiwi Herder

Holy Poo ! - Fantastic concept, beautifully realised.

Wait till the Dork sees this one !

I H-G
"When the Carpet Monster tells you it's full....
....it's time to tidy the workbench"

Confuscious (maybe)

wolfik

wow...great idea. it will be the ground to buy and build the trumps "virgil"
I planned to build one as an atomic bomber (what it was...) but this idea in markings of n USMC AW  unit is better :)

my money is melting........! :wacko:  

wolfik

1/144 kit?....I realized the size just now! :blink:
great...

Sentinel Chicken

Here's the modified squadron badge for VAH-25 (HEAVY ATKRON TWENTY-FIVE) or just good old "FIST":


Sentinel Chicken

Quotebut this idea in markings of n USMC AW  unit is better :)

my money is melting........! :wacko:
At one point the USMC was looking at using the A-5 as an all-weather attack bomber to use from shorebased SATS equipment (basically landbased carrier catapults/arresting gear), but the funding wasn't forthcoming.  

Captain Canada

Beauty !

The A-5 is one of those all-time classic lookers...and just dying for that kind of treatment. Great job on the details and weathering. Love an a/c all bombed up like that.

Cheers !
CANADA KICKS arse !!!!

Long Live the Commonwealth !!!
Vive les Canadiens !
Where's my beer ?


Hatchet

That's bloody marvelous! I thought it was 1/72 to begin with :blink: As D2 said, he and I were discussing this very plane, only difference being that we were going for a Pave Tack, not LANTIRN :o

BTW, regarding engines, I got just what you need :D Pratt & Whitney PW1120! It's a torbojet, not a -fan, but more modern than the J79 and more economical. It's basically the core from the F100 turbofan, and the real cool thing (I read somewhere) is, that it's almost a drop-in replacement for the J79. Thrust is 20620lbs. The Israelis were going to use it in the Lavi and they re-engined one Phantom with it.

:cheers:

lancer

Bloody hell Chicken man, that is stupendous!!!!! Gotta be the best Vigilante I've EVER seen! If you can do that kind of a job in 144th, I'm giving up and going home now, I'm just not worthy....
If you love, love without reservation; If you fight, fight without fear - THAT is the way of the warrior

If you go into battle knowing you will die, then you will live. If you go into battle hoping to live, then you will die

Shasper

Sweet job man!

I kicked around a modded Vigi, now she sits deralict waiting on the Airfix TSR2 for a bash ;)


Shas B)  
Take Care, Stay Cool & Remember to "Check-6"
- Bud S.