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Vultee XP-81

Mixed-Power Fighter Prototype Aircraft

United States | 1945

"The Vultee XP-81 was a combination fighter powered by both turboprop and turbojet powerplant technology."

Power & Performance
Those special qualities that separate one aircraft design from another. Performance specifications presented assume optimal operating conditions for the Vultee XP-81 Mixed-Power Fighter Prototype Aircraft.
1 x General Electric XT-31-GE-1 turboprop engine developing 2,300 horsepower and 1 x General Electric J33-GE-5 turbojet engine developing 3,750 lb of thrust.
506 mph
815 kph | 440 kts
Max Speed
35,499 ft
10,820 m | 7 miles
Service Ceiling
2,500 miles
4,023 km | 2,172 nm
Operational Range
4,500 ft/min
1,372 m/min
The nose-to-tail, wingtip-to-wingtip physical qualities of the Vultee XP-81 Mixed-Power Fighter Prototype Aircraft.
44.9 ft
13.69 m
O/A Length
50.5 ft
(15.39 m)
O/A Width
14.0 ft
(4.27 m)
O/A Height
12,798 lb
(5,805 kg)
Empty Weight
19,500 lb
(8,845 kg)
Available supported armament and special-mission equipment featured in the design of the Vultee XP-81 Mixed-Power Fighter Prototype Aircraft .
6 x 12.7mm Browning Heavy Machine Guns (never installed).
Notable series variants as part of the Vultee XP-81 family line.
XP-81 - Two prototype examples as S/N 44-91000 and 44-91001.

Authored By: Staff Writer | Last Edited: 01/21/2019 | Content ©www.MilitaryFactory.com | The following text is exclusive to this site; No A.I. was used in the generation of this content.

The Consolidated Vultee XP-81 was a proposed long-range, high-altitude fighter design that was to be the answer for bomber escorting in Europe but, more importantly, throughout the island hopping campaign of the Pacific. The XP-81 melded together the power of the ever-evolving turbojet engines and the development of America's first turboprop engine.

The single-seat, twin engine fighter was designed around the complicated General Electric powerplant creations that would never live up to expectations with the XP-81 design. To feed the two-engine idea, the aircraft itself was to be of a rather large design for a fighter when compared to its contemporaries in the P-51 Mustang, P-38 Lightning and the P-47 Thunderbolt.

The pilot sat forward of the wing assemblies, offering up tremendous visibility from the bubble canopy overlooking the front part of the aircraft. A four-blade propeller sat at front, powered by the turboprop assembly in the nose. The laminar flow wings sat directly in the center of the design with a low tricycle landing gear system underneath the massive spread. Twin intakes were mounted just aft of the cockpit on the top portion of the fuselage. These intakes were placed as such to feed the single turbojet engine jettisoning exhaust through the rear under the rudder and tail assemblies.

On paper, the design was sound. Estimated capabilities proposed that the system would be able to achieve over 500 miles per hour and reach over 35,000 feet. As impressive ranges were a part of the American aircraft pedigree throughout the war (British and German aircraft seldom were long-range threats to one another), the XP-81 was to have a distance of 2,500 miles - more than enough to keep up with the B-17 and B-29 bomber formations pounding The Reich and the Empire of Japan.

Alas, troubles with the powerplant forced the only flying prototype to be fitted with a P-51 engine alternative. When the turboprop did arrive and was installed, the system produced well under expectations - a full 1,000 horsepower under proposed capabilities in fact. With the war in Europe now held in check by the existing breed of fighter escorts and the island hopping campaigns of the Pacific progressing equally well - though slow-going and costly to US ground forces - the XP-81 project was cancelled along with the order of 13 YP-81 developmental models.

Though envisioned with an armament array of 6 x .50 caliber machine guns, the weapons were never fitted to the aircraft. Provisions for drop tanks or bombs can be assumed. The two surviving prototypes were later found scrapped of most anything of value and, as of this writing, are awaiting their fate with the USAF - perhaps seeing fit to restore at least one model for the USAF Museum in Dayton, Ohio. A sound concept nonetheless, the twin engine creation never really got off the ground.

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Global customers who have evaluated and/or operated the Vultee XP-81. Nations are displayed by flag, each linked to their respective national aircraft listing.

Total Production: 2 Units

Contractor(s): Vultee / Consolidated / Convair - USA
National flag of the United States

[ United States (cancelled) ]
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Going Further...
The Vultee XP-81 Mixed-Power Fighter Prototype Aircraft appears in the following collections:
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