Author Topic: Apophenia's Offerings  (Read 930017 times)

Offline apophenia

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Re: Apophenia's Offerings
« Reply #2675 on: December 08, 2020, 05:33:01 AM »
No real backstory here. I got a suggestion from sporting25 for the Invasion of Japan/Japan ‘46 GB concept. This involved USMC use of a re-engined Beech Grizzly. However, in the end, I pilfered the Marine content and expanded it for my P-61 derivative:

http://beyondthesprues.com/Forum/index.php?topic=9576.msg179626#msg179626

Still, an Allison V-3420-powered XA-38 Grizzly was too cool a concept to just abandon. So, I've done it up as a prototype re-engined by Beechcraft to get around their engine supply problem (since the B-29 had priority for the XA-38's original R-3350 radials). In reality, of course, Beechcraft faced other supply problems with their XA-38. Eg: the Grizzly's GE remote-controlled barbettes and their fire-control system were ear-marked for the Douglas A-26/A-26B.

I modelled my fictional XA-38B cowlings on those of the V-3420-powered Lockheed XP-58 (but removed its unnecessary turbochargers). Again reality rears its ugly head ... the 'Chain Lightning' programme was abandoned after Wright Field examiners realized what a maintenance hog it was. Adding paired V-3420 engines to that mix wasn't going to help  :P
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Offline Sport25ing

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Re: Apophenia's Offerings
« Reply #2676 on: December 08, 2020, 07:15:06 AM »
Thx XD

Offline jcf

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Re: Apophenia's Offerings
« Reply #2677 on: December 08, 2020, 09:22:11 AM »
 :smiley: :smiley:

It's long struck me that the XA-38 is one of the least bellicose appearing purpose-designed
warplanes of the period.
 ;D
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Offline elmayerle

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Re: Apophenia's Offerings
« Reply #2678 on: December 08, 2020, 11:12:09 AM »
No real backstory here. I got a suggestion from sporting25 for the Invasion of Japan/Japan ‘46 GB concept. This involved USMC use of a re-engined Beech Grizzly. However, in the end, I pilfered the Marine content and expanded it for my P-61 derivative:

http://beyondthesprues.com/Forum/index.php?topic=9576.msg179626#msg179626

Still, an Allison V-3420-powered XA-38 Grizzly was too cool a concept to just abandon. So, I've done it up as a prototype re-engined by Beechcraft to get around their engine supply problem (since the B-29 had priority for the XA-38's original R-3350 radials). In reality, of course, Beechcraft faced other supply problems with their XA-38. Eg: the Grizzly's GE remote-controlled barbettes and their fire-control system were ear-marked for the Douglas A-26/A-26B.

I modelled my fictional XA-38B cowlings on those of the V-3420-powered Lockheed XP-58 (but removed its unnecessary turbochargers). Again reality rears its ugly head ... the 'Chain Lightning' programme was abandoned after Wright Field examiners realized what a maintenance hog it was. Adding paired V-3420 engines to that mix wasn't going to help  :P

That does look nice.  I will agree with jcf, though, that there are other aircraft that look far more bellicose.

Re: Apophenia's Offerings
« Reply #2679 on: December 08, 2020, 07:05:14 PM »
XA-38B = Greatness

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Re: Apophenia's Offerings
« Reply #2680 on: December 09, 2020, 01:42:38 AM »
Hmmm...one of these in Biafran war markings... ;)
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Offline apophenia

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Re: Apophenia's Offerings
« Reply #2681 on: December 10, 2020, 03:52:49 PM »
Hmmm...one of these in Biafran war markings... ;)

I like it! But my starting point will be Jon's comment about lack of bellicosity ...

When, at long last, R-3350 engines became available, a small production run of A-38C Grizzly attack aircraft was begun. Then Japan capitulated. Left with a cancelled contract and more than a dozen virtually completed airframes, Beechcraft bought A-38C components back from the US government for scrap value. The initial scheme was to produce new fuselages to combine with the Grizzly powerplants, undercarriage, wings, and empennage. However, by the time that Bill Cassidy's project team had completed the fuselage design, it was clear to Beechcraft management that there was going to be a glut of relatively cheap, surplus airframes available for the fast transport/executive aircraft role.

After a time with A-38Cs sat weathering in the weeds at Wichita, it was decided to either find a role or scrap the stored A-38Cs and unfinished components. The US military showed no interest in a fast target-tug nor were civilian operators interested in a fast photo-survey mount. So, it was decided to adapt the Grizzlys to the new water bomber role. The rear cockpit was stripped of all equipment other than radios which helped rebalance the c/g without the 75 mm nose gun fitted (although, in truth, civilianized A-38Cs were always tail-heavy). The most noticeable modification, though, was the enormous belly tank for fire retardant.

Bottom The prototype 'Pregnant Grizzly' water bomber conversion of the A-38C. Seen here after being sold, this was the aircraft that Beechcraft test pilot Vern Carstens successfully landed after it threw a propeller in flight.

The Grizzly water bomber conversions were generally successful in their new role but proved uneconomical compared with other conversions - like the Douglas A-26 and North American B-25. As such, many were 'de-tanked' and sold off for other roles. Most became target tugs with foreign governments. However, one ex-water bomber Grizzly surreptitiously returned to the type's originally-planned attack role. Sold to Lusaka-based Kariba Aerial Survey plc by the Pan Eurasian Trading Co. of Luxembourg, this aircraft would never arrive in Zambia.

A 'Biafran Bear' - The Grizzly Goes to Africa

Top Beech Grizzly in fresh Biafran Air Force colours. Beneath the underwing Biafran roundel, traces of intended (or pretended?) ownership can be seen where the Zambian registration 9J-BPS has been removed. On its nose, 'White 5' (Ocha ise) sports the patriotic slogan 'Ibo kwenu! Yaa!' (Ibo Solidarity). [1] Fixed armament is a single, nose-mounted 37 mm Nudelman N-37 cannon. [2] Note the non-standard glazings - hold-overs from this aircraft's days as a water bomber.

Delivered by Ernest Koenig (via Portuguese Guinea) at the end of April 1967, the aircraft was operational by the first week of May. After test-flights by future BAF commander Godwin Ezeilo, the Grizzly was turned over to Dutch mercenary pilot, Maarten Dahmen. Plans to augment armament on the Grizzly were never realized. [3] The BAF Grizzly was lost on its sixth mission, coming down in the Bight of Biafra. No cause was determined although the aircraft had a history of propeller problems and other mechanical glitches. No trace was ever found of pilot Dahmen or his observer, van Reiseghem.

___________________________________

[1] These days, this would be rendered as 'Igbo kwenu! Yaa!' ('Ibo' being an out-dated spelling).

[2] The origin of this N-37 is unknown - the Nigerian AF is not known to have lost any of its MiG-17 fighters (or MiG-15UTI trainers). The BAF Grizzly was fitted with a Reflexsikte m/37 sight smuggled in from Sweden (where it had been taken from a scrapped Seversky J9 fighter).

[3] It was intended to install wing and belly bomb racks along with fixed 12.7 mm Browning machine guns.
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Re: Apophenia's Offerings
« Reply #2682 on: December 11, 2020, 02:02:33 AM »
 :smiley: :smiley:
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Re: Apophenia's Offerings
« Reply #2683 on: December 11, 2020, 02:31:36 AM »
Another thought (Can't help myself sorry):  What about a small number of these (say 1 SQN's worth) being based in Japan and then rushed to Korea in 1950 to be used in their original anti-tank/Ground Attack role against the advancing North Korean forces. 

One could probably use some of the A-26 schemes:



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Offline apophenia

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Re: Apophenia's Offerings
« Reply #2684 on: December 12, 2020, 05:51:54 AM »
Another thought ...

Oh, one more can't hurt  ;D

'Pinnochio 2' was a stock standard Beechcraft A-38C armed with a 75 mm M10 autocannon. Here, the aircraft is shown carrying twin 500 lb bombs on its wing racks. More normally, the Grizzly would be seen carrying a load of 5-inch HVAR rockets (to 'distract' enemy anti-aircraft gunners on the run in) with drop tanks on the wing pylons. The M10 was never terrifically reliable and restricted A-38C use to daylight hours but the 75 mm gun was powerful.

Beechcraft tried to interest the USAF in an 'Advanced Grizzly' rebuild by resurrecting the Army's WW2 Oldsmobile T9E2 105mm recoilless gun on the T17 Aircraft Mount. A second, equally unsuccessful proposal was to rearm some A-38C airframes with a nose-mounted 40 mm Bofors gun. The 'Grizzly 40' was intended as an anti-AAA escort for 75 mm-armed A-38Cs.
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Offline Sport25ing

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Re: Apophenia's Offerings
« Reply #2685 on: December 12, 2020, 08:05:17 AM »
All 3 variants (40, 75 and 105mm guns) flying at the same time = 1950 AC-130 "standing by"  ;D

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Re: Apophenia's Offerings
« Reply #2686 on: December 13, 2020, 01:18:17 AM »
 :smiley:

I wish there was a 1/48 scale kit of the XA-38 available.  I really like the idea of a Korean War version.
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Offline apophenia

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Re: Apophenia's Offerings
« Reply #2687 on: December 15, 2020, 10:45:21 AM »
In September 1943, the US Marine Corps' Deputy Commandant for Aviation paid a visit to the Vultee Aircraft Corporation at Downey, CA. Maj-Gen RS Geiger was inquiring about future trainers for Marine Aviators. The Vultee Model 54 was already in USMC service as the SNV Valiant but 'Jiggs' Geiger was looking for sturdier trainers for future dive bomber pilots. Doubtless the Deputy Commandant had in mind a higher-powered SNV, so he would have been caught off guard by the suggestion of Vultee engineers - the use of actual dive bombers.

The Vultee Vengeance had been exported under Lend-Lease but the US Army was using their A-35s mainly as target tugs. As it happened, the US Navy had placed orders for modified airframes for use as land-based torpedo bombers as the TBV-1 Georgia. Would the Marines be interested in taking over "the senior Service's" order? The Bureau of Aeronautics had placed that TBV-1 order on hold due to performance concerns. But Vultee's design department had been working to address Vengeance performance. This involved the use of more lightweight equipment but, most importantly, the over-taxed Wright R-2600 engine would be replaced by a more powerful Pratt & Whitney R-2800 radial. The Army had declined this 'A-35C' development ... might the Marines be interested?

Under this proposal, the TBV contract would be replaced by early delivery of R-2600-powered SBV-1 trainers (in the form of surplus Army A-35As). These would be followed by new-production, lightweight SBV-2s powered by the R-2800. Offered an immediate opportunity to test-fly an undelivered A-35A, Maj-Gen Geiger was sold. [1] Now he had to sell the concept to his Commandant and to the Bureau of Aeronautics. A memo was prepared arguing that Vultee dive bombers for the Marine Air Groups would reduce demands for the carrier-capable Curtiss SB2C Helldivers. When 'Jiggs' Geiger returned to the SW Pacific, his place was taken by his former chief of staff, Maj-Gen Louis Woods. It was Woods who oversaw procurement of what became the Marines' SBV-2 Vengeance. [2]

As land-based dive bombers, the first SBV-2s were effectively re-engined A-35Bs fitted with some US Navy equipment. However, forward of the bomb bay, the structure of the SBV-2 was completely new. This was to accommodate the 2,000 hp P&W R-2800-10 Double Wasp radial. This 18-cylinder engine had very different proportions than the A-35's 14-cylinder R-2600 as well as being heavier than that Wright powerplant. [3] To speed the SBV-2 development process, the Bureau of Aeronautics specified that engine bearers and engine auxiliary equipment be those of the similarly-powered Grumman F6F-3 Hellcat fighter. [4]

Bottom The XSBV-2 Vengeance - an A-35B conversion - under trial at NAS Pensacola in December 1943. Aft of its engine bay, the stripped, natural metal finish was identical to that of the USAAF's final A-35B deliveries. Representative of the first dozen production SBV-2s, the prototype retained its Army-style framed canopy hood and sextet of wing guns. Note the deployed twin .50s in the rear cockpit complete with armour plate protection for the gunner.

Like the prototype, 'pre-production' SBV-2s were based on partially-completed A-35B airframes. Upon acceptance, the tail-down cockpit visibility complaints from the Navy's TBV assessment re-emerged. Vultee addressed this by increasing the range of pilot seat elevation and adopted a bulged, clear-blown canopy. The new pilot's canopy was introduced on the follow-on SBV-2B series but all pre-production models (other than one damaged SBV-2 relegated to instructional airframe duties) were upgraded to SBV-2A status with modified pilot's seats and canopies. Other than some minor equipment changes, the full-production SBV-2B differed mainly in having a reduced wing armament of 4 x .50-calibre Brownings to reduce all-up weight.

In late 1944, the SBV-2Bs deployed for combat - being escorted on their flight from the Solomons to Leyte in the Philippines by North American PBJ-1 bombers of Marine Air Group 61. These dive bombers reached Tacloban airstrip on Leyte Island on 03 December 1944. Assigned to MAG-32 commanded by Col Clayton R. Jerome, the Vengeance replaced SBD-5 dive bombers of VMSB-243 and VMSB-244. [5] By coincidence, the first combat mission was flown on 'Pearl Harbor Day' - 07 December 1944. Escorted by Corsair fighters of VMF-211, six Vengeances from the VMSB-244 'Bombing Banshees' drew first blood - damaging a Japanese destroyer at anchor in Ormoc Bay. [6] Later in the day, VMSB-243 - the 'Flying Goldbricks' - had their opportunity. Three Japanese cargo ships and a troop transport were sunk.

Top 'Daisy Mae' - a Vultee SBV-2B Vengeance of VMSB-243, Leyte, early 1945. Philippines-based Vengeances all received blue tail bands to distinguish them from USAAF aircraft. Individual aircraft numbers were applied in white over that ID band and, often, on the nose as well (here in Insignia Blue). Other markings are the squadron's 'Flying Goldbrick' on the fin and namesake artwork on the cowling - Daisy Mae Scragg being a character from the L'il Abner comic strip.

The last SBV-2B Vengeance was delivered from Vultee's Nashville Division in October 1944. The Marine-operated SBV-2Bs served with distinction in the Philippines until the end of the war. [7] No other Marines Vengeance model saw combat service. The SBV-3 was an unbuilt variant which was to have twin 20 mm cannons (and a AN/APS-6 radar pod on its starboard wing). Also stillborn was the turreted SBV-4. The sole XSBV-4 was an SBV-2A re-engined with a 2,100 hp P&W R-2800-18W engine driving a four-bladed Aeroproducts propeller. The unbuilt SBV-4A was to restore the full wing armament of six .50s.

__________________________

[1] 'Jiggs' Geiger had trained at NAS Pensacola. He became Naval Aviator #49 (and Marine Corps Aviator #5) in June 1917.

[2] Initially, the BuAer the designated the new aircraft as TBV-3 (the trainers being TBV-2s) and re-assigned the name Georgia. The designation quickly became more 'role specific' and the name change back to Vengeance.

[3] At 52.8 inches, the R-2800 had a smaller diameter than the 55 inch R-2600. However, while the latter was only 62 inches long, the R-2800 stretched a full 81.4 inches. The R-2800 also weighed over 300 lbs more than the original Wright R-2600 but Vultee was able to accommodate this by shifting the P&W engine further aft and re-arranging some internal equipment to restore the centre of gravity.

[4] On the XSBV-2 prototype, some cowling panels were also taken from the Hellcat. However, it was found that the XSBV-2 required additional cowl vents for cooling. For production aircraft, the SBV-2 cowlings were completely revised - any remaining similarities to the F6F were purely internal.

[5] MAG-32 VMSB-142 ('Wild Horses') would retain its Douglas SBD-6 Dauntless dive bombers which were better suited for some close-support missions. The Vengeance was faster and better-armed but the beautifully-handling SBDs possessed superior diving characteristics.

[6] A direct hit was scored on the IJN destroyer but the dropped 1,000 delay-fused lb M65 GP bomb failed to explode.

[7] The SBVs stayed in-theatre at the Marines' insistence, despite the best efforts of General GC Kenney - Commander, Allied Air Forces, SW Pacific - to have the type removed.

BTW: This profile began life as Teodor Liviu Morosanu's A27-288.
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Offline Jeffry Fontaine

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Re: Apophenia's Offerings
« Reply #2688 on: December 15, 2020, 02:51:19 PM »
Nice!  Like the story and the profiles are inspiring. 

Would the torpedo have been carried semi-exposed, partially within the bomb bay or carried on an external rack? 
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Re: Apophenia's Offerings
« Reply #2689 on: December 16, 2020, 02:25:32 AM »
 :smiley:
All hail the God of Frustration!!!

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Offline apophenia

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Re: Apophenia's Offerings
« Reply #2690 on: December 16, 2020, 11:21:39 AM »
Cheers folks!

...Would the torpedo have been carried semi-exposed, partially within the bomb bay or carried on an external rack?

Excellent question Jeff. I've never seen anything but a brief comment on the Vultee TBV-1 Georgia order having been cancelled.

I got the impression that it was to be a least-mod derivative of the Vengeance. If so, my guess would be an external rack - if I've scaled it right, the existing bomb bay was nowhere near long enough for the USN's Mark XIII aerial torpedo.

Another Vengeance that I'd never seen illustrated was the one-off YA-31C re-engined with a Wright R-3350-18. Of course, once I'd knocked together a speculative image ... suddenly, Google Images decides to deliver  ::)

https://picryl.com/media/vultee-ya31c-vengeance-at-the-naca-50dd21

Anyway, my version pushes the R-3350 aft (for c/g reasons) and has a revised lower fuselage for a semi-recessed 'fish'. Because, well why not  ;D


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Offline Jeffry Fontaine

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Re: Apophenia's Offerings
« Reply #2691 on: December 16, 2020, 12:40:24 PM »
On the TBD Devastator the torpedo was carried semi-exposed.  The aft end being contained within the cavity that would normally carry a 500 pound bomb and the straps securing the torpedo to the aircraft were secured to the forward bomb shackles.  In the bomber mission, a pair of 500 pound bombs would be carried on these same shackles.  There was an aerodynamic fairing that was also installed on the aircraft for the torpedo mission that would be removed for the bomber mission.  Innovative but also cumbersome. 

With regards to your attempt to "size" the Mk.13 Torpedo it appears to be a bit on the lean side.  Definitely need to phatten that phish up a little to get the proper proportions.  Mk.13 was on the short and stubby side when compared to the standard 21.0" (533 mm) submarine and surface ship torpedo (details for the Mk.14 Submarine Torpedo at this link).  The Mk.13 was also just a wee bit larger in diameter at 22.5"/571.5mm and noticeably shorter at 161.0"(4.09m)

This image may help with your "adjustments" for size and length: Wikipedia > Mk.13 Aircraft Torpedo general arrangement drawing

One other detail regarding the torpedo and how it was carried.  The weapon was secured to the aircraft with a length of cable that was wrapped around the torpedo body at or near the center of gravity.  This rope or strap was then secured to the bomb shackle or shackles (in the case of the TBD) and relied on both shackles being loosed at the same time in order to properly launch or drop the weapon.  In very few moving picture clips you can see the strap falling away to splash in to the ocean as the torpedo is launched.  Even today the standard ASW torpedoes on some helicopters such as the SH-3 Sea King for example are secured in the very same manner as the Mk.13.  I am not sure how modern ASW aircraft carry their torpedo internally or on a wing stores pylon as I have yet to see one up close and in any detail. 
« Last Edit: December 16, 2020, 12:49:41 PM by Jeffry Fontaine »
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Offline jcf

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Re: Apophenia's Offerings
« Reply #2692 on: December 17, 2020, 07:46:37 AM »
Torpedoes on P-8 pylons:


Torpedo being prepped for P-8 bay:


Torpedo in P-3:
« Last Edit: December 17, 2020, 07:52:46 AM by jcf »
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Offline Jeffry Fontaine

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Re: Apophenia's Offerings
« Reply #2693 on: December 17, 2020, 10:02:02 AM »
@JCF - Jon, the first image shows 2000 lb/900kg Mk.65 Quickstrike Mines.  These weapons are secured to the stores pylons by suspension lugs and ejected by explosive charge to clear the weapon from the stores pylon. 

The other two images show the torpedo with the adapter straps to allow for carriage on a stores pylon.  This is a further adaptation of the original strap used on the earlier torpedoes.
« Last Edit: December 17, 2020, 10:04:30 AM by Jeffry Fontaine »
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Offline apophenia

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Re: Apophenia's Offerings
« Reply #2694 on: December 18, 2020, 09:20:36 AM »
Wow, I wasn't even close ;P  Thanks for the links Jeff, those were really helpful for getting the correct proportions and dimensions for the Mark XIII/Mk 13. For those who want to know:

Bliss-Leavitt Mark 13 torpedo - Weight 2,216 lbs; Diameter 22.5 inches (0.5715 m); Length 161 inches (4.0894 m)

My revised image shows (at the bottom) a fairly standard A-36A as a highly-speculative TBV-1 Georgia. Of necessity, the Mk 13 torpedo is carried externally (below the too-short bomb bay).

Complicating all this is the introduction of the Mk 1 kit - aka the 'Pickle Barrel' drag ring on the torpedo nose and the 'box' stabilizer. This kit was meant to allow the Mark 13 to be dropped at both a higher altitude and speed. As the name suggests, the wooden drag ring slowed the torpedo for water entry. The plywood 'box' stabilizer stopped the torpedo from rotating while airborne. On impact, softwood pins sheared releasing this stabilizer. [1]

https://wwiiafterwwii.wordpress.com/2017/08/28/mk13-torpedo-during-the-falklands-war/

The upper view is my sense of what would be necessary to turn the Vengeance airframe into a torpedo bomber which could carry the Mark 13 with Mk kit. First is more power - in the form of a Wright R-3350. I've used a deeper B-29 cowling which means that the belly line can be lowered. This would help streamline the blunt 'Pickle Barrel' while in flight. The bomb bay doors have also been deepened. Even still, the torpedo would not be fully enclosed by those doors. I've also shown the 'box' stabilizer exposed in a cut-out in the lower rear fuselage.

All-in-all, a lot of work for very little return. As rendered, the TBV-1 Georgia would be less able than the carrier-capable Grumman TBF already in service. Obviously, the BuAer made the right decision in cancelling that Vultee contract.

_______________________

[1] I'm not quite sure how the 'Pickle Barrel' was released. It was held in place by a 'stick' across the nose of the torpedo. Did that 'stick' break when hitting the water surface, allowing the annular drag ring to slid aft along the torpedo's body? On did the light, wooden 'Pickle Barrel' simply shatter on impact? I don't know.
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Offline Jeffry Fontaine

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Re: Apophenia's Offerings
« Reply #2695 on: December 18, 2020, 04:35:38 PM »
Glad to be of assistance.  The revised torpedo definitely looks better and the further modifications to the fuselage for semi-conformal carriage looks very practical. 
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Offline apophenia

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Re: Apophenia's Offerings
« Reply #2696 on: December 20, 2020, 10:24:40 AM »
A last kick at the Vengeance can (sort of) but no real backstory ...

I'm imagining the Vultee XA-46 Vulture study as a low-risk backup for the R-4360-9 powered Vultee XA-41. The design brief was to combine as many existing components as possible with an in-service engine. The Pratt & Whitney R-2800 was chosen as powerplant. The airframe mated the outer wing panels of the Vultee XP-54 'Swoose Goose' fighter with the tail surfaces and fuselage from the Vengeance. To meet the new Attack requirement, that fuselage was revised as a single-seater (with a large fuel tank taking up most of the rest of the former cockpit area).

Top The original proposal with slightly-raised pilot's position covered by the canopy from the 'Swoose Goose' (albeit without the XP-54's fancy seat elevator). Fixed armament consisted of twelve .50-calibre Brownings or four 20 mm cannons and four 50-cals.

Bottom Second XA-46 submission with revised cowling and P-47 cockpit canopy adopted. A dorsal fin extension has been incorporated to improve stability and a third fixed armament option added - that of four 37 mm autocannons.

In the end, the Army Air Force concluded that - other than the enclosed bomb bay - the XA-46 Vulture would add little capability not already possessed by the USAAF's plentiful Republic P-47 fighter-bombers. Unfortunately for Convair/Vultee, that conclusion was also later extended to their larger XA-41 prototype.
"It happens sometimes. People just explode. Natural causes." - Agent Rogersz

Offline GTX_Admin

  • Evil Administrator bent on taking over the Universe!
  • Administrator - Yep, I'm the one to blame for this place.
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    • Beyond the Sprues
Re: Apophenia's Offerings
« Reply #2697 on: December 21, 2020, 02:07:32 AM »
 :smiley:
All hail the God of Frustration!!!

You can't outrun Death forever.
But you can make the Bastard work for it.

Offline apophenia

  • Perversely enjoys removing backgrounds.
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Re: Apophenia's Offerings
« Reply #2698 on: December 22, 2020, 07:24:11 AM »
Just playing with an old notion. The Curtiss SB2C was close to cancellation a number of times. But the prototype Douglas XSB2D-1 didn't fly until April 1943 with the production single-seat BTD-1 Destroyer not flying until March 1944. What about a less complex development than the Destroyer? I am, of course, talking about a further evolution of the stalwart SBD Dauntless.

So here - playing with Witold Jaworski's amazing 3D model of the SBD-5 - is the SB3D-1 Super Dauntless.

Changes? Replacing the single-row Cyclone is a Wright R-2600 driving a four-blade propeller. To clear that prop, the main undercarriage is extended in height and beefed up. Those main undercarriage legs compress as they retract but more space is still needed to stow the retracted gear. The revised gear is housed in an extended wing centre section (the outboard wing panels stay essentially unchanged except in accommodating an increased fixed-gun armament - four wing-mounted .50-inch Brownings replacing the SBD's twin cowl guns).

To balance the R-2600, the rear fuselage has been slightly extended and the vertical tailplane enlarged. The horizontal tails have been given dihedral (I was generally going for a Douglas A-20 tie-in on the tail). I went with a retractable tailwheel just because the RW fixed tailwheel on the Dauntless always looked a little incongruous to me. Anyway, probably a silly idea ... but I had fun with it.
"It happens sometimes. People just explode. Natural causes." - Agent Rogersz

Offline Old Wombat

  • "We'll see when I've finished whether I'm showing off or simply embarrassing myself."
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Re: Apophenia's Offerings
« Reply #2699 on: December 22, 2020, 07:28:31 AM »
Doesn't look silly. Looks pretty cool! 8)
"This is the Captain. We have a little problem with our engine sequence, so we may experience some slight turbulence and, ah, explode."