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Curtiss VF-11B

Carrierborne Fleet Defense Fighter Proposal

United States | 1947

"The Curtiss VF-11B rounded out a trio of submissions to the United States Navy to cover a fleet defense fighter requirement down the road."

Power & Performance
Those special qualities that separate one aircraft design from another. Performance specifications presented assume optimal operating conditions for the Curtiss VF-11B Carrierborne Fleet Defense Fighter Proposal.
1 x Rolls-Royce Nene afterburning turbojet engine developing 8,400lb of thrust.
646 mph
1,040 kph | 562 kts
Max Speed
50,033 ft
15,250 m | 9 miles
Service Ceiling
20,500 ft/min
6,248 m/min
The nose-to-tail, wingtip-to-wingtip physical qualities of the Curtiss VF-11B Carrierborne Fleet Defense Fighter Proposal.
36.3 ft
11.05 m
O/A Length
35.9 ft
(10.95 m)
O/A Width
10,417 lb
(4,725 kg)
Empty Weight
11,905 lb
(5,400 kg)
Available supported armament and special-mission equipment featured in the design of the Curtiss VF-11B Carrierborne Fleet Defense Fighter Proposal .
6 x 5" (127mm) High-Explosive, fin-stabilized aerial rockets fired from lower port side fuselage.
Notable series variants as part of the Curtiss VF-11B family line.
VF-11 - Base Fighter Proposal of 1946.
VF-11A - Revised proposal with squared-off vertical tail fin and single Rolls-Royce turbojet engine.
VF-11B - Revised proposal showcasing more traditional fighter design mainplane wing arrangement; outward-canted V-style tail unit.

Authored By: Staff Writer | Last Edited: 06/06/2022 | Content ©www.MilitaryFactory.com | The following text is exclusive to this site; No A.I. was used in the generation of this content.

The Curtiss VF-11B was the third, and final, design proposal directed at a potential Untied States Navy (USN) fleet defense fighter requirement in the immediate post-World War 2 period. The first two offerings (detailed elsewhere on this site) were to rely on a tailed delta-wing planform with the original's (VF-11) twin-engine layout given up in favor of the subsequent (VB-11A) proposal's single Rolls-Royce Nene turbojet. By the time of the VF-11B, the aircraft was largely reworked to include swept-back wing mainplanes and a V-style tail arrangement with outward-canted fins.

The consistent qualities between the three designs were: turbojet powered propulsion scheme (with rocket-boosting for enhanced acceleration), tricycle undercarriage, expected carrier equipment / features (arrestor hook, folding wings), all-rocket armament (fired from the lower portside of the nose), and seating for a single crewman under a three-piece canopy.

The VB-11B was certainly the most conventional of the trio mainly due to the mainplanes, these being low-mounted along the sides of the fuselage and swept back at both their leading and trailing edges. The V-style tail unit was a considerable departure but implemented due to collected data championing weight-savings. The British Rolls-Royce "Nene" turbojet was carried over from the A-model proposal and this was to be aspirated by side-mounted intakes as in the first two designs - the expected thrust output rated at around 8,400lb and offering an afterburner capability. With the sloping nose assembly, the pilot was afforded excellent forward vision out-of-the-cockpit and the lowered dorsal line helped to achieve some rearward vision.

As drawn up, this Curtiss naval interceptor was to have a wingspan of 36 feet and a length of 36.2 feet. Maximum Take-Off Weight (MTOW) was to reach 12,000lb and maximum speeds were in the vicinity of 650 miles-per-hour. Rate-of-climb with rocket-boosting was to exceed 20,000 feet-per-minute.

Like the other submissions of the VF-11 series, the VF-11B did not advance beyond this paper stage.

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Global customers who have evaluated and/or operated the Curtiss VF-11B. Nations are displayed by flag, each linked to their respective national aircraft listing.

Total Production: 0 Units

Contractor(s): Curtiss Aeroplane Company - USA
National flag of the United States

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Going Further...
The Curtiss VF-11B Carrierborne Fleet Defense Fighter Proposal appears in the following collections:
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