Vickers Jockey

From Wikipedia, the free encyclopedia

The Vickers Type 151 Jockey was an experimental low-wing monoplane interceptor fighter powered by a radial engine. It was later modified into the Type 171 Jockey II which had a more powerful engine and detailed improvements. Only one was built, and this was lost before its development was complete, but the knowledge gained enabled Vickers to produce the more refined Venom.

Development

In the late 1920s the idea of the interceptor fighter was forming. To deal with the faster and higher flying bombers, fighters had both to be fast at height and quick to get there. The Air Ministry was keen to determine the best aircraft configuration and sought, under Air Ministry specification F.20/27, manufacturers to build biplanes and both low- and high-wing monoplanes. Vickers were asked for a prototype low wing fighter, and this became (somewhat unofficially) called the "Jockey", or sometimes the Jockey I. This name covered both Vickers Types 151 and 171; the Jockey II was an early name for the later Venom.^[1]

Vickers Type 151 Jockey

The Type 151 Jockey was a compact and rather angular low cantilever wing monoplane, built using the Wibault-Vickers corrugated skinned all metal method as used, for example on the Vireo. The unstressed skin was riveted onto a largely duralumin structure, a few steel tubes forming highly stressed members. The parallel chord, square tipped wing used the thick, high lift RAF 34 cross section Vickers had employed previously on the Viastra. The tailplane was equally rectangular and the fin clipped. All control surfaces apart from the rudder were unbalanced. The pilot's open cockpit was at the highest part of the fuselage at mid-chord. The 480 hp (360 kW) Bristol Mercury IIA 9-cylinder radial was initially mounted without a cowling. A single axle undercarriage had legs attached to front and rear wing spars.^[1]

The Jockey was taken to RAF Martlesham Heath for its first flight in April 1930 and subsequent testing.^[2] A rear fuselage vibration was at first thought to be aerodynamic but proved to be structural; it was cured after Barnes Wallis redesigned the internal bracing. The rudder was modified, its balance removed and a trim tab installed. Spats were added to the undercarriage and a Townend ring enclosed the engine. The same aircraft was re-designated the Type 171 Jockey when the Mercury was replaced by a 530 hp (395 kW) supercharged Bristol Jupiter VIIF. The intention to power the Jockey with a supercharged Mercury IVS2 was never realised after the sole Jockey was lost to a flat spin on 15 July 1932, crashing at Woodbridge, Suffolk, pilot successfully bailing out at 5,000 feet.^[3] The results of the tests had been sufficiently good to encourage Vickers to refine its design into the Vickers Venom.^[1]

Variants

Type 151 Jockey: Prototype single seat fighter, one only (J9122).
Type 171 Jockey II: Early name for Vickers Venom, a Jockey development.
Type 196 Jockey III: Single seat fighter, same engine as Type 171. Started but not completed. Registered G-AAWG reserved by Vickers 5 April 1933.^[4]

Specifications (Type 171)

Data from Andrews & Morgan 1988, p. 254

General characteristics

Crew: 1
Length: 23 ft 0 in (7.01 m)
Wingspan: 32 ft 6 in (9.90 m)
Height: 8 ft 3 in (2.51 m)
Wing area: 150 ft² (13.94 m²)
Empty weight: 2,260 lb (1,025 kg)
Gross weight: 3,161 lb (1,434 kg)
Powerplant: 1 × Bristol Jupiter VIIF nine cylinder radial, 530 hp (395 kW)

Performance

Maximum speed: (at 10,000 ft, 3,048 m) 218 mph (351 km/h)
Service ceiling: (absolute) 31,000 ft (9,450 m)
Rate of climb: ( to 10,000 ft, 3,048 m) 2,083 ft/min (10.6 m/s)

Armament

provision for 2 Vickers machine guns

References

Wikimedia Commons has media related to Vickers Jockey.

Notes

↑ 1.0 1.1 1.2 Andrews & Morgan 1988, pp. 238–41, 254, 515
↑ Andrews & Morgan 1988, pp. 240–1
↑ Mason, Francis K., "The British Fighter since 1912", Naval Institute Press, Annapolis, Maryland, 1992, Library of Congress card number 92-63026, ISBN 1-55750-082-7, pages 228.
↑ Andrews & Morgan 1988, p.515

Bibliography

Andrews, CF; Morgan, E.B. (1988). Vickers Aircraft since 1908 (2nd ed.). London: Putnam. ISBN 0-85177-815-1.

v t e Vickers and Vickers-Armstrongs aircraft

By type number	54 55 56 57 58 59 60 61 62 63 64 66 67 69 71 72 73 74 76 78 79 81 83 84 85 87 91 94 95 96 99 100 103 105 106 108 112 113 115 116 117 121 123 124 125 127 128 129 130 131 132 134 139 141 142 143 145 146 150 151 160 161 162 163 169 170 172 173 177 192 194 195 196 198 199 203 204 207 209 210 212 214 216 217 220 244 245 246 252 253 255 258 259 262 264 266 271 277 281 285 286 287 289 290 291 292 294 298 299 401 402 406 407 408 410 413 416 417 418 419 421 424 427 428 429 432 435 437 439 440 442 443 445 446 447 449 451 452 454 455 456 457 458 459 460 461 462 463 464 465 466 467 469 470 474 478 485 486 487 488 490 491 492 495 496 498 559 571 579 581 602 604 607 610 614 615 616 618 619 620 621 623 624 626 627 628 630 632 634 635 636 637 639 641 643 644 648 649 651 660 667 668 674 700 701 702 706 707 708 710 720 723 724 730 733 734 735 736 737 739 742 744 745 748 749 754 756 757 758 760 761 763 764 765 768 769 772 773 776 779 781 782 784 785 786 789 793 794 798 800 801 802 803 804 806 807 808 810 812 813 814 815 816 818 827 828 831 832 836 837 838 839 843 870 950 951 952 953 1000 1100 1101 1103 1106 1151 Type C

Early types	Hydravion Monoplane No.1 Monoplane No.2 Monoplane No.3 Monoplane No.4 Monoplane No.5 Monoplane No.6 Monoplane No.7 Monoplane No.8 Tractor Biplane Tractor Scout HM Airship No. 1 HM Airship No. 9r

Civilian	Vimy Commercial Vulture Viget Vagabond Vulcan 170 Vanguard Vellox VC.1 Viking VC.2 VC.3 Viscount Vanguard VC10 Airships: R80 R100

Military	C.O.W. Gun Fighter E.F.B.1 E.F.B.2 E.F.B.3 E.F.B.4 F.B.5 F.B.6 E.F.B.7 E.F.B.8 F.B.9 F.B.11 F.B.12 F.B.14 F.B.16 F.B.19 F.B.23 F.B.24 F.B.25 F.B.26 (Vampire) F.B.27 E.S.1 E.S.2 Vimy Viking Vivid Vixen Valparaiso Venture Wibaut Scout 123 Valiant 141 143 161 162 163 177 207 253 581 C Jockey Vespa Wibault Viastra Vellore Virginia Vanox Valentia (flying boat) Valentia (Type 264) Vampire Vanellus Vendace Venom Vernon Victoria Vildebeest V.I.M Vincent Vireo Vulture Wellesley Wellington Warwick Windsor Valetta Varsity Valiant "Victory Bomber"

v t e Lists relating to aviation

General	Aircraft manufacturers Aircraft engines manufacturers Gliders Airlines defunct Airports Civil authorities Museums Registration prefixes Rotorcraft manufacturers Timeline

Military	Air forces Weapons Experimental Missiles Unmanned

Accidents/incidents	Commercial airliners by location Fatalities by death toll General aviation Military

Records	Airspeed Altitude Distance Endurance Firsts Large Most-produced aircraft Most-produced rotorcraft

This article is issued from Wikipedia. The text is available under the Creative Commons Attribution/Share Alike; additional terms may apply for the media files.