Boeing XP-15

XP-15 / XF5B-1

The sole XP-15
Role	Fighter
Manufacturer	Boeing
First flight	XP-15 - 30 January 1930^[1] XF5B-1 - February 1930^[1]
Status	XP-15 - Destroyed
Primary users	United States Army Air Corps United States Navy
Number built	2 (1 XP-15, 1 XF5B-1)

The Boeing XP-15 was a prototype monoplane fighter of the United States, the second to be designated a pursuit type, after the Boeing XP-9.

Design and development

This aircraft was essentially a monoplane version of the Boeing P-12, differing in having the lower wing omitted and in having all-metal construction as well as altered ailerons. The XP-15 had a split-axle undercarriage and a tail wheel.^[1]

Boeing numbered the craft as its Model 202; while the United States Army accepted it for testing and designated it as XP-15, they never actually purchased it, and it retained its civil registration of X-270V.^[1]

Operational history

The XP-15 first flew in January 1930, when it was discovered that the vertical stabilizer (a P-12C type) needed to be larger in order to compensate for the single wing. Initial testing showed a top speed to 178 mph, but with enlarged tail surfaces and a Townend cowling, it recorded 190 mph at 8,000 ft. The aircraft performed poorly, with a poor rate of climb and a high landing speed. The USAAC did not order the aircraft for production and on 7 February 1931, the prototype was destroyed when a propeller blade failed and the engine tore loose from its mounts.^[1]

The Navy was offered the similar Model 205. It first flew in February 1930. It was ordered by the US Navy, but by the time flight testing was complete in 1932, other aircraft were ordered instead. It was however, the first US designed monoplane to receive a US Navy designation, XF5B-1,^[1] following the German designed Wright WP-1 of 1923.

Operators

The XF5B-1

United States

Specifications (XP-15)

Data from Angelucci 1987, pp. 81–82.^[1]

General characteristics

Crew: one
Length: 21 ft 0 in (6.40 m)
Wingspan: 30 ft 6 in (9.29 m)
Height: 9 ft 4.5 in (2.84 m)
Wing area: 157.3 ft² (14.61 m²)
Empty weight: 2,052 lb (931 kg)
Gross weight: 2,746 lb (1,246 kg)
Powerplant: 1 × Pratt & Whitney SR-1340D, 525 hp (391 kW)

Performance

Maximum speed: 190.2 mph (306 km/h)
Cruise speed: 160 mph (257 km/h)
Range: 420 miles (676 km)
Service ceiling: 27,650 ft (8,428 m)
Rate of climb: 1,800 ft/min (9.15 m/s)

Armament

2 x .30 inch machine guns

References

Notes

1 2 3 4 5 6 7 Angelucci 1987, pp. 81-82.

Bibliography

Angelucci, Enzo. The American Fighter from 1917 to the present. New York: Orion Books, 1987.
Jones, Lloyd S. U.S. Fighters, Army-Air Force: 1925 to 1980s. Fallbrook, California: Aero Publishers Incorporated, 1975, pp. 48–49. ISBN 0-8168-9200-8.

External links

Wikimedia Commons has media related to Boeing XP-15 and XF5B.

XF5B-1

USAAS/USAAC/USAAF/USAF fighter designations 1924–1962
Pursuit (pre-1948) Fighter (post-1948)	P-1 P-2 P-3 XP-4 P-5 P-6 XP-7 XP-8 XP-9 XP-10 P-11 P-12 XP-13 XP-14 XP-15 P-16 P-17 YP-18 YP-19 YP-20 P-21 XP-22 P-23 YP-24 P-25 P-26 P-27 P-28 P-29 P-30 XP-31 P-32 P-33 XP-34 P-35 P-36 P-37 P-38 P-39 P-40 XP-41 P-42 P-43 P-44 P-45 XP-46 P-47 XP-48 XP-49 XP-50 P-51 XP-52 P-53 XP-54 XP-55 XP-56 XP-57 XP-58 P-59 P-60 P-61/C XP-62 P-63 P-64 P-65 P-66 XP-67 XP-68 P-69 P-70 XP-71 XP-72 P-73 P-74¹ P-75 P-76 XP-77 P-78 XP-79 P-80 XP-81 F-82 XP-83 F-84 F-85 F-86/D XF-87 F-88 F-89 XF-90 XF-91 XF-92 YF-93 F-94 F-95 F-96 F-97 F-98 F-99 F-100 F-101 F-102 XF-103 F-104 F-105 F-106 F-107 XF-108 XF-109 F-110 F-111/B
Pursuit, Biplace	PB-1 PB-2 PB-3
Fighter, Multiplace	FM-1 FM-2
¹ Not assigned See also: F-24 • F-117 • P-400 • post-1962 sequence

United States Navy fighter designations pre-1962
General Aviation Brewster	FA FA² F2A F3A
Boeing	FB F2B F3B F4B F5B F6B F7B F8B
Curtiss	CF F2C F3C F4C F5C¹ F6C F7C F8C F9C F10C F11C F12C F13C F14C F15C
Douglas McDonnell	XFD F2D² F3D F4D F5D F6D FD F2D to "H"
Grumman	FF F2F F3F F4F F5F F6F F7F F8F F9F-1 to -5 F9F-6 to -8 F10F F11F F12F
Eberhart Goodyear	FG F2G FG F2G
Hall McDonnell	FH FH F2H F3H F4H
Berliner-Joyce North American	FJ F2J F3J FJ-1 FJ-2/3 FJ-4
Loening Bell	FL FL YF2L-1 F2L-1K F3L
General Motors	FM F2M F3M
Naval Aircraft Factory	FN
Lockheed	FO (I) FO (II)
Ryan	FR F2R F3R
Supermarine	FS
Northrop	FT F2T
Vought	FU F2U F3U F4U F5U F6U F7U F8U F8U-3
Lockheed	FV
Wright CC&F	WP F2W F3W FW² F2W² F3W² F4W
Convair	FY F2Y
¹ Not assigned • ² Assigned to a different manufacturer's type See also: Aeromarine AS • Vought VE-7

Boeing model numbers
Aircraft	1 2 3 4 5 6 6D 6E 7 8 10 15 16 21 40 42 50 53 54 55 58 63 64 66 67 68 69 72 74 75 77 80 81 83 89 93 95 96 99 100 101 102 200 202 203 204 205 214 215 218 221 222 223 226 227 234 235 236 246 247 248 251 256 264 266 267 273 280 281 294 299 300 306 307 314 316 344 345 367 367-80 377 400 450 451 464 466 474 479 701 818 953 707 717 (i) 717 (ii) 720 727 733 737 739 747 757 767 777 787 2707
Turbine engines	500 502 520 550
Vessels	929
Other	Boeing Customer Codes

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