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Bell XP-59 (Model 20)


Twin-Boom Fighter Proposal


United States | 1943



"The Bell XP-52 evolved to become the larger XP-59 fighter form - but both were dropped from contention and the XP-59 designation reused for the jet-powered Bell P-59 Airacomet."



Authored By: Staff Writer | Last Edited: 12/21/2016 | Content ©www.MilitaryFactory.com | The following text is exclusive to this site; No A.I. was used in the generation of this content.
Bell provided its XP-52 design as a contender for a new United States Army Air Corps (USAAC) fighter requirement emerging in the late-1930s. Bell was already gaining notoriety in aviation circles for their rather forward-thinking designs such as the YFM-1 "Airacuda" bomber destroyer and the P-39 "Airacobra". The Airacuda of 1940 was a highly ambitious attack platform intended to tackle enemy bombers head-on but only thirteen were eventually built, the line dropped as soon as 1942. The P-39, on other hand, managed a more successful existence during World War 2 (1939-1945) as over 9,500 were produced and it primarily found success with the Soviets via Lend-Lease.

With that in mind, the XP-52 was another in the company's long line of unique wartime submissions. It utilized a twin-boom configuration not unlike the Lockheed P-38 "Lightning" heavy fighter and similarly sat its pilot in a centralized fuselage nacelle. The engine was placed at the rear of this nacelle to drive a pair of propeller units in contra-rotating fashion by way of "pusher" configuration. The engine would be aspirated through an intake at the nose. The wing mainplanes, swept slightly aft, were positioned at the rear of the fuselage nacelle and from their trailing edges originated the tail booms - each capped by a vertical fin and joined by a shared horizontal plane. As with other Bell aircraft products, a tricycle undercarriage would be featured in the design.

Power was to come from a Continental XIV-1430-3 V-12 inverted liquid-cooled piston engine. The same engine was selected for the experimental Curtiss XP-55, Lockheed XP-49, and McDonnell XP-67 prototypes (all detailed elsewhere on this site) but ultimately ran into issues by performing beyond expectations. Little more than twenty-three were produced.

The XP-52 never materialized beyond some preliminary work and was officially cancelled on November 25th, 1941 (America would enter World War 2 just one month later). Instead, it was decided to pursue an enlarged version of the same aircraft as the "XP-59" so the twin-boom configuration with pusher-propeller setup would be carried over. Power would come from a Pratt & Whitney R-2800-23 engine outputting 2,000 horsepower.

In the end, even this Bell product did not progress beyond preliminary work (a wind tunnel model was completed providing the general shape of the aircraft). Attention was now being paid to a jet-powered fighter that Bell was selected to design and build. General Electric was charged with manufacturing a local copy of the British Whittle turbojet for the new design intended to serve the now-United States Army Air Forces (USAAF). The aircraft received the same designation of "XP-59" (effectively cancelling the original XP-59 Bell initiative) and became the P-59 "Airacomet" in service - America's first jet-powered fighter.

Performance figures on this page are estimates on the part of the author based on similar designs of the period.

Content ©MilitaryFactory.com; No Reproduction Permitted.
Power & Performance
Those special qualities that separate one aircraft design from another. Performance specifications presented assume optimal operating conditions for the Bell XP-59 Twin-Boom Fighter Proposal.
XP-52: 1 x Continental XIV-1430-3 V-12 liquid-cooled piston engine developing 1,275 horsepower and driving a pair of propeller blades arranged in a "puller" configuration through a contra-rotating fashion.
Propulsion
388 mph
625 kph | 337 kts
Max Speed
26,247 ft
8,000 m | 5 miles
Service Ceiling
435 miles
700 km | 378 nm
Operational Range
2,500 ft/min
762 m/min
Rate-of-Climb
City-to-City Ranges
Operational range when compared to distances between major cities (in KM).
NYC
 
  LON
LON
 
  PAR
PAR
 
  BER
BER
 
  MOS
MOS
 
  TOK
TOK
 
  SYD
SYD
 
  LAX
LAX
 
  NYC
Structure
The nose-to-tail, wingtip-to-wingtip physical qualities of the Bell XP-59 Twin-Boom Fighter Proposal.
1
(MANNED)
Crew
34.1 ft
10.40 m
O/A Length
37.7 ft
(11.50 m)
O/A Width
12.5 ft
(3.80 m)
O/A Height
7,055 lb
(3,200 kg)
Empty Weight
9,700 lb
(4,400 kg)
MTOW
Design Balance
The three qualities reflected below are altitude, speed, and range. The more full the box, the more balanced the design.
RANGE
ALT
SPEED
Armament
Available supported armament and special-mission equipment featured in the design of the Bell XP-59 (Model 20) Twin-Boom Fighter Proposal .
ESTIMATED:
1 x 37mm M4 cannon with 2 x 0.50 caliber heavy machine guns in nose.
2 x 0.50 caliber heavy machine guns in wings (one to a wing).
Variants
Notable series variants as part of the Bell XP-59 (Model 20) family line.
XP-52 - Initial prototype designation
XP-59 - Revised, dimensionally larger form based on the XP-52 design.
P-59 - Assumed USAAC in-service designation
Operators
Global customers who have evaluated and/or operated the Bell XP-59 (Model 20). Nations are displayed by flag, each linked to their respective national aircraft listing.

Total Production: 0 Units

Contractor(s): Bell Aircraft Corporation - USA
National flag of the United States

[ United States (cancelled) ]
Relative Max Speed
Hi: 400mph
Lo: 200mph
Aircraft Max Listed Speed (388mph).

Graph Average of 300 MPH.
Era Crossover
Pie graph section
Showcasing Aircraft Era Crossover (if any)
Max Alt Visualization
Small airplane graphic
MACH Regime (Sonic)
Sub
Trans
Super
Hyper
HiHyper
ReEntry
RANGES (MPH) Subsonic: <614mph | Transonic: 614-921 | Supersonic: 921-3836 | Hypersonic: 3836-7673 | Hi-Hypersonic: 7673-19180 | Reentry: >19030
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1 / 1
Image of the Bell XP-59 (Model 20)
Image from the Public Domain.

Mission Roles
Some designs are single-minded in their approach while others offer a more versatile solution to airborne requirements.
AIR-TO-AIR COMBAT
X-PLANE
Recognition
Some designs stand the test of time while others are doomed to never advance beyond the drawing board; let history be their judge.
Going Further...
The Bell XP-59 (Model 20) Twin-Boom Fighter Proposal appears in the following collections:
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