The Vought XF5U "Flying Flapjack"
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Background of the XF5U

 

Let's start with where the XF5U came from, the V-173

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The Vought V-173 "Flying Pancake" designed by Charles H. Zimmerman was an American experimental test aircraft built as part of the Vought XF5U "Flying Flapjack" World War II United States Navy fighter aircraft program. Both aircraft featured an unorthodox "all-wing" design consisting of a flat, somewhat disk-shaped body (hence its name) serving as the lifting surface. With the V-173 it proved the all-wing concept and enable Vought to bulid the XF5U with funds from the USN.
 
Now The XF5U Itself
Design and development Vought Website
The XF5U-1 was designed as a land-based or carrier-based fighter to be used with or without  a catapult, with an arresting gear. The airplane incorporated certain unusual design and structural features.
 
The wing, the basic outline of which was defined by two ellipses, so arranged that the major axis of one coincided with the minor of the other, comprised the main structure of the airplane, with the exception of the pilot’s cockpit and the horizontal and vertical tail surfaces. The greater part of the wing surfaces and internal structure was composed of Metalite, a “sandwich” material providing a particularly strong and light type of construction.  The four-bladed counter-rotating propellers were driven by cross-shafting and gear boxes connected to both engines. If one engine failed, it could be de-clutched from the system and the airplane flown with the remaining engine and both propellers operating.  Circular air intakes in the wing leading edge provided carburetor, engine and oil cooling air.  Two vertical tails with rudder and fins provided directional control. Two Metalite ailavators, with trim tabs across 70% of their trailing edge and with balance weights on the tips, provided lateral and longitudinal control. The pilot’s cockpit was a complete monocoque shell with a formed plexiglass canopy. The stick and rudder flight controls were manual except for proportional hydraulic boost to the ailavators.
 
Neither the first nor second airplane had armament, although there were provisions for six 50-caliber machine guns and ammo boxes. Two Pratt and Whitney R-2000-7 radial engines with cooling fans and superchargers were mounted upright in the wing.
 
The 16-foot diameter propellers were unique for the time and bear some mention.  Because of the activity factor, twist and shape, the props were manufactured by Chance Vought Aircraft of Stratford, Connecticut.  The two hydraulically operated, fast-acting, electro-mechanically governed propellers each had four Pregwood blades and load-relieving hubs which differed from the conventional four-way hub in that the blades were free to “flap” in pairs about the shaft axis. Low pitch stop was 15 degrees, high pitch stop was 70 degrees. The propeller pitch control set the left-hand propeller governor mechanism which controlled the right-hand propeller governor mechanism electronically and adjusted the propeller blade angle. Movement of the pitch control lever upward decreased pitch, and downward increased the pitch. Full forward position governed takeoff rpm (2,700): full aft position gave approximately 1,300 rpm in take-off slot and 800 rpm for flight. These were propeller rpm’s. There was also the more conventional throttle control which operated in three slots: “WARM-UP”, “TAKE-OFF” and “FLIGHT”.
 
Another unique feature of the XF5U-1 was the stability flap, located symmetrically about the centerline of the airplane at the wing trailing edge.  The 15 sq. ft. hinged surface required no pilot control but automatically provided for change in airplane trim with change in attitude.  The air loads upon the flap adjusted deflection against a spring loaded strut. The stability flap was linked to the tail wheel to insure locking in the up position when the tail wheel was extended.
 
Blueprints of the XF5U
 
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Testing and evaluation Wikipedia and DemitriVritra
The XF5U design was promising: specifications given at the time promised great maneuverability and speeds up to 550 mph (885 km/h). However, it came at the time when the United States Navy was switching from propeller driven to jet propelled aircraft. By 1946, the XF5U-1 project was already long over its expected development time, and well over budget. With jet aircraft coming into service, the Navy finally canceled the project on 17 March 1947, and the prototype aircraft (V-173) was transferred to the Smithsonian Museum for display. Although two aircraft were constructed, a lone XF5U-1 underwent ground runs but never overcame vibration problems. Taxi trials at Vought's Connecticut factory culminated in short "hops" that were not true flights. The only completed XF5U-1 proved to be so structurally solid that it had to be destroyed by a wrecking ball.
 
 
 
Specifications (XF5U-1)
From Wikipedia
 
General characteristics
  • Crew: One, pilot
  • Length: 28 ft 7 in (8.73 m)
  • Wingspan: 32 ft 6 in (9.91 m)
  • Height: 14 ft 9 in (4.50 m)
  • Wing area: 475 ft² (44.2 m²)
  • Empty weight: 13,107 lb (5,958 kg)
  • Loaded weight: 16,722 lb (7,600 kg)
  • Max. takeoff weight: 18,772 lb (8,533 kg)
  • Powerplant: 2 × Pratt & Whitney R-2000-7 radial engine, 1,350 hp (1,007 kW) each
  • Performance
  • Maximum speed: 413 knots / 475 mph at 28,000 ft (estimated)[8] (765 km/h at 8,534 meters)
  • Range: 1,064 miles (1,703 km)
  • Service ceiling: 34,492 ft (10,516 m)
  • Rate of climb: 3,000 ft/min (914 m/min)
  • Wing loading: 35 lb/ft² (172 kg/m²)
  • Power/mass: 0.16 hp/lb (0.27 kW/kg)
  • Armament
  • 6 × .50 machine guns or 4 × 20 mm cannon
  • 2 × 1000 lb. bombs

Video

https://www.youtube.com/watch?v=N2yzoMt6etc

https://www.youtube.com/watch?v=LfpTDOAfj7Y

 

 

Ask Lassar if the XF5U would fit within War Thunder

Lassar

Pilot officer

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Developer

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2742 Thanks

Quote

Mine if you give your opinin if this could fit within war thunder?

 

http://forum.warthun...lying-flapjack/

 

Unfortunately - no  :(s  :(s  :(s  :(s  :(s  :(s  :(s  :(s 

Edited by KB_TheDireWolf
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I thought this had already been suggested multiple times.

i think it was suggested but it had next to no info last time.

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i think it was suggested but it had next to no info last time.

I thought this had already been suggested multiple times.

I looked though if someone had suggested the XF5U In the already suggested page. Didnt see it in the list. Edited by KB_TheDireWolf
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could be a nice late T3/early T4 plane. and i like weird planes so this is fine with me +1

 

late tier 3/early tier 4?  Have you SEEN the stats of this thing?  This thing can keep up with jet fighters under some conditions!  That'd be late rank 4 with a BR of 6.3 MINIMUM, since Gaijin has gone on record and said that no prop plane will ever have a BR higher than 6.3.  Here's why it would need to be up that high:

 

 

Top speed of 765 km/h.  That makes it the fastest prop in the game, and without the sluggish acceleration of early jets.

 

Ludicrous maneuverability.  Seriously, even the Japanese would have a hard time turning against one of these.

 

High climb rate.

 

Good armament.

 

More durable than a B-17.

 

 

 

It'd just be OP as f*** if it were any lower, and even then it's questionable.

 

 

 

EDIT: Sort-of ninja'd

 

6.3?

Edited by Z3r0_
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late tier 3/early tier 4?  Have you SEEN the stats of this thing?  This thing can keep up with jet fighters under some conditions!  That'd be late rank 4 with a BR of 6.3 MINIMUM, since Gaijin has gone on record and said that no prop plane will ever have a BR higher than 6.3.  Here's why it would need to be up that high:

 

 

Top speed of 765 km/h.  That makes it the fastest prop in the game, and without the sluggish acceleration of early jets.

 

Ludicrous maneuverability.  Seriously, even the Japanese would have a hard time turning against one of these.

 

High climb rate.

 

Good armament.

look at what i said after...i was already corrected...

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just looking around for some planes for 3d modeling, but the xf5u is really hard to make.

i will give it a try, but this plane will need some time ;)s

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No thanks.
The plane didn't even make it to the air, so there is no way to make a credible FM for it.
There's plenty of US planes that have been used by the front line units. Concentrate on them please before WT becomes a flying zoo of failures that are supposed to fight each other.
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No thanks.
The plane didn't even make it to the air, so there is no way to make a credible FM for it.
There's plenty of US planes that have been used by the front line units. Concentrate on them please before WT becomes a flying zoo of failures that are supposed to fight each other.

And then we get the people with the non-credible arguments.

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No thanks.
The plane didn't even make it to the air, so there is no way to make a credible FM for it.
There's plenty of US planes that have been used by the front line units. Concentrate on them please before WT becomes a flying zoo of failures that are supposed to fight each other.

It did make into the air, though only is short hops

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