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355:, had improved performance at low level, being able to sustain 450 hp (340 kW) up to 1,500 ft (460 m) while still matching the SB's power at high altitudes. The SB and T1B2, and later versions of these with similar performance, were the most popular Wasp Junior models. One later development of the T1B2, the
325: in (132 mm), giving a 27% lesser total displacement. The Wasp Junior used many parts from the Wasp and even had the same mounting dimensions, allowing an aircraft to easily use either the smaller or the larger engine. The first run of the Wasp Junior was in 1929, and sales began in 1930. The initial version, the
367:, could sustain 525 hp (391 kW) at an altitude of 9,500 ft (2,900 m) and could produce 600 hp (450 kW) for takeoff. It also included reduction gearing to allow the high-revving engine to drive a propeller at suitable speeds, hence the "-G" suffix. Aviator
1889:. This personal collection of museum aircraft engine photos has R-985 photos under the sections titled "From Canada's National Aviation Museum in Ottawa, ON", "From the SAC Museum in Ashland, NE", and "From the Museum of Flight new galleries in Seattle, WA".
497:
Pratt & Whitney ceased production of the Wasp Junior in 1953, having built 39,037 engines. Many Wasp Junior engines are still in use today in older bush planes and agricultural planes, as well as in antique aircraft. Some antique aircraft, such as the
441:. Military versions of existing Wasp Junior-powered civilian aircraft were also produced, such as the military derivatives of the Beech 18, Beech Staggerwing, Grumman Goose, and Howard DGA-15. The Wasp Junior also powered some versions of the British
286:
Wasp
Juniors have powered numerous smaller civil and military aircraft, including small transports, utility aircraft, trainers, agricultural aircraft, and helicopters. Over 39,000 engines were built, and many are still in service today.
336:, with various suffixes denoting different military engine models. However, Pratt & Whitney never adopted the R-985 designation scheme for its civilian Wasp Juniors, identifying them simply by name and model (e.g. "Wasp Junior A").
351:, which was tuned for best performance at altitude and could sustain 400 hp (300 kW) at altitudes up to 5,000 ft (1,500 m), with 450 hp (340 kW) available for takeoff. A still later model, the
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During the mid-1930s, Pratt & Whitney developed a still greater improvement of the Wasp Junior, the "C series", with an even higher compression ratio and RPM limit. The only type produced in this series, the
387:
Early versions of the Wasp Junior were used in various small civilian and military utility aircraft, but only in limited numbers. The type became more popular later in the 1930s. It was selected for the
347:, which could maintain 420 hp (310 kW) at sea level and could reach 440 hp (330 kW) for takeoff. The TB was tuned for best performance at sea level; it was soon joined by the
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to compete in the market for medium-sized aircraft engines. Like its larger brother, the Wasp Junior was an air-cooled, nine-cylinder radial, with its power boosted by a gear-driven single-speed
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525 hp (391 kW) at 2,700 RPM up to 9,500 ft (2,900 m), 600 hp (450 kW) at 2,850 RPM for takeoff
Experimental high-powered version with propeller reduction gearing.
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400 hp (300 kW) at 2,200 RPM up to 5,000 ft (1,500 m), 450 hp (340 kW) at 2,300 RPM for takeoff. Common B-series versions were rated for performance at altitude.
502:, which originally used other engines, have had them replaced with the Wasp Junior to provide more power or for easier maintenance, since parts for the Wasp Junior are readily available.
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Allied
Aircraft Piston Engines of World War II: History and Development of Frontline Aircraft Piston Engines Produced by Great Britain and the United States During World War II
463:
After World War II, many military-surplus aircraft with Wasp Junior engines entered the civilian market. New designs based on the Wasp Junior were also introduced, such as the
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420 hp (310 kW) at 2,200 RPM at sea level, 440 hp (330 kW) at 2,300 RPM for takeoff. Early B-series versions rated for sea-level performance.
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This is the highest altitude at which the engine can achieve its full continuous power rating. Above this altitude, power falls off with height as with a
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of 985 in (16 L); initial versions produced 300 hp (220 kW), while the most widely used versions produce 450 hp (340 kW).
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450 hp (340 kW) at 2,300 RPM up to 1,500 ft (460 m) and for takeoff. Common B-series versions with improved sea-level performance
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450 hp (340 kW) at 2,300 RPM up to 2,300 ft (700 m) and for takeoff
Vertically mounted development of T1B3, for helicopters
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Aviacionnye motory voennykh vozdushnykh sil inostrannykh gosudarstv (Авиационные моторы военных воздушных сил иностранных государств)
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Galleries by Gary and Janet Brossett: Experimental Aircraft Association AirVenture Museum - Oshkosh, WI
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Pratt & Whitney followed the Wasp Junior A with more powerful models in the "A series". These had higher
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U.S. military versions: R-985-13, -17, -23, -33, -48, -50; R-985-AN-2, -4, -6, -6B, -8, -10, -12, -12B, -14B
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twin-engined trainers. The demands of World War II led to the production of many thousands of Wasp
Juniors.
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Image
Galleries by Gary and Janet Brossett: National Museum of Naval Aviation in Pensacola, Florida
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300 hp (220 kW) at 2,000 RPM at sea level and for takeoff. First production version.
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http://neam.org/index.php?option=com_content&view=article&layout=edit&id=1075
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twin-engined airliner, as well as for other small twin-engined civil transports like the
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Image
Galleries by Gary and Janet Brossett: Pima Air and Space Museum in Tucson, Arizona
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with this engine in 1937, setting a speed and altitude record and placing third in the
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data sheet for the Wasp Junior SB; dimensions from Pratt & Whitney (1956), p. A2.
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2304:: Gosudarstvennoe voennoe izdatelstvo Narkomata Oborony Soyuza SSR. Archived from
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Image
Galleries by Gary and Janet Brossett: Hill Aerospace Museum near Ogden, Utah
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Pratt & Whitney developed the R-985 Wasp Junior as a smaller version of the
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U.S. military versions: R-985-25, -27, -39, -39A; R-985-AN-1, -1A, -3, -3A
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As World War II arrived, the U.S. military chose the Wasp Junior for the
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World
Encyclopedia of Aero Engines: From the Pioneers to the Present Day
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Image Galleries by Gary and Janet Brossett: Images from RAF Cosford
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Until the end of the war, the Wasp Junior's closest competitor was
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Aircraft Company from the 1930s to the 1950s. These engines have a
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359:, was especially designed for vertical mounting in helicopters.
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FAA Type Certificate Data Sheet TC 5E-1, see notes 5 and 6.
876:: This engine has been sectioned and motorized for display.
379:. However, the SC-G never got past the experimental stage.
2286:. Available from the Aircraft Engine Historical Society's
834:
A Pratt & Whitney R-985 Wasp Junior on display at the
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1195:
Specifications for different R-985 Wasp Junior variants
992:
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Some museums which have Wasp Junior engines on display:
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1018:
9-cylinder supercharged air-cooled radial piston engine
2321:
2247:. Warrendale, Pennsylvania: SAE International, 1995.
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537:
U.S. military versions: R-985-9, -11, -11A, -21, -46
332:
The U.S. military designated the Wasp Junior as the
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49:. Unsourced material may be challenged and removed.
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956:(formerly the Strategic Air Command Museum) near
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2264:Index of Wasp Jr. & R-985 Designated Engines
1518:
1990:. The section "Images from Gary Brossett" has
1940:National Museum of the United States Air Force
917:National Museum of the United States Air Force
303:. Its cylinders were smaller, however, with a
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2439:
2201:Queensland Air Museum: The Engine Collection
138:Pratt & Whitney R-985 AN-1 mounted in a
1869:
1430:Pratt & Whitney R-1535 Twin Wasp Junior
257:Pratt & Whitney R-1535 Twin Wasp Junior
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2320:data sheets, all available from the FAA's
1865:
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268:is a series of nine-cylinder, air-cooled,
3947:Aircraft air-cooled radial piston engines
2013:. "Pratt & Whitney R-985 Wasp Junior"
1702:Pratt & Whitney Wasp Jr. R-985-AN-14B
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711:(LC-DW Solution, LC-DW300 Super Solution)
290:
109:Learn how and when to remove this message
2293:
2233:. 5th edition, Stroud, UK: Sutton, 2006.
845:Pratt & Whitney R-985 on display at
840:
829:
504:
1858:
1677:FAA Type Certificate Data Sheet TC 5E-1
1621:
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870:Washington Dulles International Airport
564:U.S. military versions: R-985-AN-5, -7.
58:"Pratt & Whitney R-985 Wasp Junior"
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3162:Pratt & Whitney Canada aeroengines
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1576:FAA Type Certificate Data Sheet ATC 39
1543:
1365:600 hp (450 kW) at 2,850 RPM
1359:525 hp (391 kW) at 2,700 RPM
1333:450 hp (340 kW) at 2,300 RPM
1307:450 hp (340 kW) at 2,300 RPM
1287:450 hp (340 kW) at 2,300 RPM
1281:400 hp (300 kW) at 2,200 RPM
1261:440 hp (330 kW) at 2,300 RPM
1255:420 hp (310 kW) at 2,200 RPM
1229:300 hp (220 kW) at 2,000 RPM
382:
329:, produced 300 hp (224 kW).
3174:
2427:
2029:Pratt & Whitney R-985 Wasp Junior
1686:Pratt & Whitney (1956), pp. A2-A3
1618:FAA Type Certificate Data Sheet E-123
1590:FAA Type Certificate Data Sheet TC 85
993:Specifications (R-985 Wasp Junior SB)
825:
266:Pratt & Whitney R-985 Wasp Junior
3952:Pratt & Whitney aircraft engines
2158:Aircraft Engine Historical Society,
2132:Pratt & Whitney R385 Wasp Junior
2050:Aircraft Engine Historical Society,
1971:Aircraft Engine Historical Society,
1899:Aircraft Engine Historical Society,
1825:Aircraft Engine Historical Society,
1723:Aircraft Engine Historical Society,
1565:
1525:Pratt & Whitney - R-985 Wasp Jr.
1509:
1497:. January 10, 1930. pp. 101–102
47:adding citations to reliable sources
18:
3916:US military gas turbine aeroengines
2386:Type Certificate Data Sheet TC 5E-1
1666:
1593:
1579:
1132:driven at 10 times crankshaft speed
758:helicopter (and S-51 civil version)
13:
2332:Type Certificate Data Sheet ATC 39
720:Lockheed Model 12-A Electra Junior
14:
3963:
2401:
2368:Type Certificate Data Sheet TC 85
2350:Type Certificate Data Sheet E-123
2148:. (Note page title has an error.)
1663:Pratt & Whitney (1956), p. A1
1645:Pratt & Whitney (1956), p. A3
1562:Pratt & Whitney (1956), p. A2
908:National Museum of Naval Aviation
394:Lockheed Model 12A Electra Junior
1783:) of its R-985 teardown display.
963:Canada Aviation and Space Museum
650:de Havilland Canada DHC-2 Beaver
469:de Havilland Canada DHC-2 Beaver
199:de Havilland Canada DHC-2 Beaver
129:
23:
2322:Regulatory and Guidance Library
2315:Federal Aviation Administration
2223:
2191:
2151:
2119:
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2043:
2016:
2004:
1964:
1932:
1892:
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1689:
1425:Pratt & Whitney R-1340 Wasp
1413:Pratt & Whitney Wasp series
1385:
577:
245:Pratt & Whitney R-1340 Wasp
34:needs additional citations for
16:9-cylinder radial engine family
3097:Pratt & Whitney Rocketdyne
1480:
1154:
1112:per cylinder, pushrod-actuated
972:Royal Air Force Museum Cosford
954:Strategic Air and Space Museum
652:and L-20/U-6 military versions
525:U.S. military version: R-985-1
1:
3942:1920s aircraft piston engines
3155:Joint development aeroengines
2179:a photo of the museum's R-985
1992:a photo of the museum's R-985
1920:a photo of the museum's R-985
1846:a photo of the museum's R-985
1744:a photo of the museum's R-985
1697:National Air and Space Museum
1469:
1397:Supercharger#Altitude effects
1096:
1083:45.75 in (1,162 mm)
1077:41.59 in (1,056 mm)
862:National Air and Space Museum
301:centrifugal type supercharger
3921:Piston engine configurations
2105:Pratt & Whitney R-985-14
1362:9,500 ft (2,900 m)
1284:5,000 ft (1,500 m)
737:(in aftermarket conversions)
725:Max Holste MH.1521 Broussard
636:(in aftermarket conversions)
377:Bendix transcontinental race
7:
2024:Pima Air & Space Museum
1974:National Museum of the USAF
1406:
935:Pima Air & Space Museum
866:Steven F. Udvar-Hazy Center
715:Lockheed Model 10-A Electra
516:
371:flew a special Model D-17W
10:
3968:
3092:Pratt & Whitney Canada
2382:Wasp Jr. military models:
1393:naturally aspirated engine
1377:864 lb (392 kg)
1351:684 lb (310 kg)
1336:2,300 ft (700 m)
1325:653 lb (296 kg)
1310:1,500 ft (460 m)
1299:640 lb (290 kg)
1273:640 lb (290 kg)
1247:565 lb (256 kg)
1071:985 in (16.14 L)
930:Windsor Locks, Connecticut
836:Frontiers of Flight Museum
735:Naval Aircraft Factory N3N
390:Lockheed Model 10A Electra
3903:
3883:
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2100:Southern Museum of Flight
1945:Pratt & Whitney R-985
1121:Single-speed gear-driven
1092:640 lb (290 kg)
944:Southern Museum of Flight
137:
128:
123:
3138:Richard "Dick" Soderberg
2634:Free-piston gas turbines
2089:) of the museum's R-985.
2069:. This page has photos (
1474:
1464:List of aircraft engines
1190:0.625 hp/lb (1.03 kW/kg)
1172:0.406 hp/in³ (18.5 kW/L)
819:Wedell-Williams Model 44
730:McDonnell XHJH Whirlaway
634:Boeing-Stearman Model 75
609:and military derivatives
543:Wasp Junior SB, SB2, SB3
500:Boeing-Stearman Model 75
3887:W-configuration inline)
3216:H-configuration inline)
3204:piston aircraft engine
2346:Wasp Jr. SB, T1B2, B4:
2198:Queensland Air Museum,
1215:Supercharger gear ratio
1010:General characteristics
431:basic training aircraft
3867:VG (inverted-V inline)
3292:L (single-bank inline)
3264:IV (inverted-V inline)
3202:United States military
2127:Royal Air Force Museum
1452:Wright R-975 Whirlwind
1062: in (132 mm)
1040: in (132 mm)
926:New England Air Museum
853:
838:
789:Vought OS2U Kingfisher
613:Beechcraft Staggerwing
552:Wasp Junior T1B2, T1B3
513:
435:Vought OS2U Kingfisher
409:Beechcraft Staggerwing
373:Beechcraft Staggerwing
291:Design and development
211:Vought OS2U Kingfisher
149:Air-cooled 9-cylinder
3844:V (inverted-V inline)
1794:Hill Aerospace Museum
1186:Power-to-weight ratio
982:Queensland Air Museum
889:Hill Aerospace Museum
880:EAA AirVenture Museum
844:
833:
773:SIAI-Marchetti SM.102
508:
480:agricultural aircraft
3766:V (upright-V inline)
3133:Frederick Rentschler
2411:. Covington Aircraft
1799:"Wasp Junior" Engine
1753:and several photos (
1733:on December 12, 2008
1532:on February 10, 2010
809:Weatherly 201 series
794:Vultee BT-13 Valiant
778:Spartan Executive 7W
741:North American BT-14
699:(Rimowa F13 replica)
676:Grumman G-164 Ag Cat
656:Douglas C-26 Dolphin
473:Max Holste Broussard
428:North American BT-14
424:Vultee BT-13 Valiant
215:Vultee BT-13 Valiant
151:radial piston engine
43:improve this article
3056:Aeroderivative gas
2455:Pratt & Whitney
2277:on October 31, 2010
2259:Pratt & Whitney
2168:on October 13, 2008
1520:Pratt & Whitney
1488:"The 'Wasp Junior'"
1419:Related development
1196:
1128:supercharger, with
948:Birmingham, Alabama
903:Seattle, Washington
804:Waco SRE Aristocrat
607:Beechcraft Model 18
534:Wasp Junior TB, TB2
454:Wright Aeronautical
405:amphibious aircraft
398:Beechcraft Model 18
383:Operational history
277:Pratt & Whitney
195:Beechcraft Model 18
191:Beechcraft Model 17
171:Pratt & Whitney
3206:designation system
2566:Twin Wasp (R-2000)
2561:Twin Wasp (R-1830)
2208:on October 4, 2009
2184:2011-04-11 at the
2085:2011-04-11 at the
2075:2011-04-11 at the
2060:on August 27, 2009
1997:2011-04-10 at the
1925:2011-04-11 at the
1909:on August 27, 2009
1851:2011-04-11 at the
1835:on August 27, 2009
1779:2011-04-11 at the
1769:2011-04-11 at the
1759:2011-04-11 at the
1749:2011-04-11 at the
1436:Comparable engines
1194:
912:Pensacola, Florida
884:Oshkosh, Wisconsin
854:
847:Museum of Aviation
839:
826:Engines on display
768:Snow S-2B and S-2C
682:Grumman G-21 Goose
602:Barkley-Grow T8P-1
591:Air Tractor AT-300
514:
509:R-985 fitted to a
484:Snow S-2B and S-2C
369:Jacqueline Cochran
341:compression ratios
203:Grumman G-21 Goose
186:Major applications
124:R-985 Wasp Junior
3929:
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2624:XH-3130 (XH-3730)
2294:Tsygulev (1939).
1870:Michel Charette,
1381:
1380:
1212:Compression ratio
1206:Critical altitude
1203:Power, continuous
1177:Compression ratio
1140:aviation gasoline
958:Ashland, Nebraska
671:Griffon Lionheart
629:Berliner-Joyce OJ
417:Spartan Executive
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2611:H piston engines
2576:Twin Wasp Junior
2458:aircraft engines
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2409:"Radial Engines"
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978:, United Kingdom
899:Museum of Flight
785:SR-9F and SR-10F
703:Koolhoven F.K.51
661:Fleetwings BT-12
615:D17S, D17W, G17S
587:(AS.46 Oxford V)
570:Wasp Junior SC-G
467:helicopter, the
365:Wasp Junior SC-G
353:Wasp Junior T1B2
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2402:External links
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2313:The following
2311:
2310:
2308:on 2009-03-24.
2300:(in Russian).
2291:
2288:reference page
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488:Grumman Ag Cat
476:bush airplanes
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357:Wasp Junior B4
349:Wasp Junior SB
345:Wasp Junior TB
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252:Developed into
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2956:
2953:
2951:
2948:
2945:
2942:
2941:
2939:
2937:
2933:
2929:
2923:
2920:
2918:
2915:
2913:
2910:
2908:
2905:
2902:
2899:
2897:
2894:
2892:
2889:
2887:
2884:
2882:
2879:
2877:
2874:
2872:
2869:
2868:
2864:
2861:
2858:
2855:
2853:
2850:
2847:
2844:
2842:
2839:
2837:
2834:
2832:
2829:
2827:
2824:
2822:
2819:
2817:
2814:
2812:
2809:
2807:
2804:
2802:
2799:
2797:
2794:
2792:
2789:
2787:
2784:
2782:
2779:
2777:
2774:
2772:
2769:
2767:
2764:
2762:
2759:
2756:
2753:
2752:
2750:
2748:
2744:
2738:
2735:
2733:
2730:
2728:
2725:
2723:
2720:
2718:
2715:
2713:
2710:
2708:
2705:
2703:
2700:
2699:
2696:
2693:
2691:
2688:
2686:
2683:
2681:
2678:
2676:
2673:
2671:
2668:
2666:
2663:
2661:
2658:
2657:
2655:
2653:
2649:
2643:
2640:
2639:
2637:
2635:
2631:
2625:
2622:
2620:
2617:
2616:
2614:
2612:
2608:
2602:
2601:Yellow Jacket
2599:
2597:
2594:
2592:
2589:
2587:
2584:
2582:
2579:
2577:
2574:
2572:
2569:
2567:
2564:
2562:
2559:
2557:
2554:
2552:
2549:
2547:
2544:
2542:
2539:
2538:
2535:
2532:
2530:
2527:
2525:
2522:
2520:
2517:
2515:
2512:
2510:
2507:
2505:
2502:
2500:
2497:
2495:
2492:
2490:
2487:
2485:
2482:
2480:
2477:
2475:
2472:
2471:
2469:
2467:
2463:
2459:
2456:
2449:
2444:
2442:
2437:
2435:
2430:
2429:
2426:
2410:
2406:
2405:
2388:
2387:
2381:
2370:
2369:
2364:Wasp Jr. TB:
2363:
2352:
2351:
2345:
2334:
2333:
2327:
2326:
2325:
2323:
2319:
2316:
2307:
2303:
2299:
2298:
2292:
2289:
2273:
2266:
2265:
2260:
2256:
2254:
2253:1-56091-655-9
2250:
2246:
2242:
2240:
2239:0-7509-4479-X
2236:
2232:
2228:
2227:
2207:
2203:
2202:
2194:
2187:
2183:
2180:
2167:
2163:
2162:
2154:
2138:
2134:
2133:
2128:
2122:
2107:
2106:
2101:
2095:
2088:
2084:
2081:
2078:
2074:
2071:
2059:
2055:
2054:
2046:
2031:
2030:
2025:
2019:
2012:
2007:
2000:
1996:
1993:
1980:
1976:
1975:
1967:
1951:
1947:
1946:
1941:
1935:
1928:
1924:
1921:
1908:
1904:
1903:
1895:
1879:
1875:
1874:
1866:
1864:
1862:
1854:
1850:
1847:
1834:
1830:
1829:
1821:
1805:
1801:
1800:
1795:
1789:
1782:
1778:
1775:
1772:
1768:
1765:
1762:
1758:
1755:
1752:
1748:
1745:
1732:
1728:
1727:
1719:
1704:
1703:
1698:
1692:
1683:
1674:
1672:
1670:
1660:
1658:
1656:
1654:
1652:
1642:
1640:
1638:
1636:
1634:
1624:
1615:
1613:
1611:
1609:
1607:
1605:
1603:
1601:
1599:
1597:
1587:
1585:
1583:
1573:
1571:
1569:
1559:
1557:
1555:
1553:
1551:
1549:
1547:
1531:
1527:
1526:
1521:
1515:
1513:
1496:
1489:
1483:
1479:
1465:
1462:
1461:
1460:
1459:
1458:Related lists
1453:
1450:
1448:
1445:
1443:
1440:
1439:
1438:
1437:
1431:
1428:
1426:
1423:
1422:
1421:
1420:
1414:
1411:
1410:
1398:
1394:
1388:
1384:
1376:
1373:
1370:
1367:
1364:
1361:
1358:
1355:
1354:
1350:
1347:
1344:
1341:
1338:
1335:
1332:
1329:
1328:
1324:
1321:
1318:
1315:
1312:
1309:
1306:
1303:
1302:
1298:
1295:
1292:
1289:
1286:
1283:
1280:
1277:
1276:
1272:
1269:
1266:
1263:
1260:
1257:
1254:
1251:
1250:
1246:
1243:
1240:
1237:
1234:
1231:
1228:
1225:
1224:
1220:
1218:Octane rating
1217:
1214:
1211:
1208:
1205:
1202:
1199:
1198:
1189:
1187:
1183:
1180:
1178:
1174:
1171:
1169:
1165:
1162:
1161:Power output:
1159:
1158:
1149:
1147:
1143:
1141:
1137:
1134:
1131:
1127:
1124:
1120:
1118:
1114:
1111:
1107:
1105:
1101:
1100:
1091:
1089:
1085:
1082:
1079:
1076:
1073:
1070:
1068:
1064:
1048:
1046:
1042:
1026:
1024:
1020:
1017:
1014:
1013:
1007:
1005:
1002:
999:
988:, Queensland.
987:
983:
980:
977:
976:Wolverhampton
973:
970:
968:
964:
961:
959:
955:
952:
949:
945:
942:
940:
936:
933:
931:
927:
924:
922:
918:
915:
913:
909:
906:
904:
900:
897:
894:
890:
887:
885:
881:
878:
875:
871:
867:
863:
859:
858:
857:
852:
848:
843:
837:
832:
820:
817:
815:
814:Weatherly 620
812:
810:
807:
805:
802:
800:
797:
795:
792:
790:
787:
784:
781:
779:
776:
774:
771:
769:
766:
763:
762:Sikorsky S-39
760:
757:
754:
752:
751:Seversky BT-8
749:
747:
744:
742:
739:
736:
733:
731:
728:
726:
723:
721:
718:
716:
713:
710:
707:
705:(some models)
704:
701:
698:
695:
693:
690:
688:
687:Howard DGA-11
685:
683:
680:
678:(some models)
677:
674:
672:
669:
667:
664:
662:
659:
657:
654:
651:
648:
646:
643:
641:
640:Bratukhin G-3
638:
635:
632:
630:
627:
625:
622:
620:
617:
614:
611:
608:
605:
603:
600:
597:
594:
592:
589:
586:
583:
582:
572:
569:
566:
563:
560:
557:
554:
551:
548:
545:
542:
539:
536:
533:
530:
527:
524:
522:Wasp Junior A
521:
520:
512:
507:
503:
501:
495:
493:
489:
485:
481:
477:
474:
470:
466:
461:
459:
455:
450:
448:
444:
440:
436:
432:
429:
425:
420:
418:
414:
413:Howard DGA-15
410:
406:
403:
402:Grumman Goose
399:
395:
391:
380:
378:
374:
370:
366:
360:
358:
354:
350:
346:
342:
337:
335:
330:
328:
327:Wasp Junior A
310:
306:
302:
298:
288:
284:
282:
278:
275:built by the
274:
271:
267:
258:
255:
250:
249:
246:
243:
238:
237:
233:
228:
227:
223:
220:
219:
216:
212:
208:
204:
200:
196:
192:
189:
184:
183:
179:
176:
175:
172:
169:
167:Manufacturer
166:
165:
161:
156:
155:
152:
148:
145:
144:
141:
136:
132:
127:
122:
113:
110:
102:
91:
88:
84:
81:
77:
74:
70:
67:
63:
60: –
59:
55:
54:Find sources:
48:
44:
38:
37:
32:This article
30:
26:
21:
20:
3907:
3640:
3158:
3085:Subsidiaries
2590:
2473:
2413:. Retrieved
2390:, retrieved
2385:
2372:, retrieved
2367:
2356:December 21,
2354:, retrieved
2349:
2338:December 21,
2336:, retrieved
2331:
2328:Wasp Jr. A:
2312:
2306:the original
2296:
2281:December 21,
2279:, retrieved
2272:the original
2263:
2244:
2230:
2224:Bibliography
2212:December 25,
2210:, retrieved
2206:the original
2200:
2193:
2172:December 25,
2170:, retrieved
2166:the original
2160:
2153:
2143:December 25,
2141:, retrieved
2137:the original
2131:
2121:
2111:December 25,
2109:, retrieved
2104:
2094:
2064:December 25,
2062:, retrieved
2058:the original
2052:
2045:
2035:December 25,
2033:, retrieved
2028:
2018:
2006:
1985:December 25,
1983:, retrieved
1979:the original
1973:
1966:
1956:December 25,
1954:, retrieved
1950:the original
1944:
1934:
1913:December 25,
1911:, retrieved
1907:the original
1901:
1894:
1884:December 25,
1882:, retrieved
1878:the original
1872:
1839:December 25,
1837:, retrieved
1833:the original
1827:
1820:
1810:December 25,
1808:, retrieved
1804:the original
1798:
1788:
1737:December 25,
1735:, retrieved
1731:the original
1725:
1718:
1708:December 25,
1706:, retrieved
1701:
1691:
1682:
1623:
1536:December 20,
1534:, retrieved
1530:the original
1524:
1501:December 23,
1499:. Retrieved
1494:
1482:
1457:
1456:
1435:
1434:
1418:
1417:
1399:for details.
1387:
1330:Wasp Jr. B4
1278:Wasp Jr. SB
1252:Wasp Jr. TB
1184:
1175:
1166:
1160:
1150:Direct drive
1144:
1138:80/87 grade
1135:
1117:Supercharger
1115:
1102:
1086:
1080:
1074:
1067:Displacement
1065:
1043:
1021:
1015:
997:
996:
921:Dayton, Ohio
855:
756:Sikorsky H-5
578:Applications
511:DHC-2 Beaver
496:
482:such as the
465:Sikorsky H-5
462:
451:
437:observation
433:and for the
421:
386:
364:
361:
356:
352:
348:
344:
338:
333:
331:
326:
294:
285:
281:displacement
265:
263:
230:Number built
207:Sikorsky H-5
105:
96:
86:
79:
72:
65:
53:
41:Please help
36:verification
33:
3345:O (opposed)
3128:Perry Pratt
2936:Turboshafts
2591:Wasp Junior
2581:Wasp series
2571:Twin Wasp E
2556:Twin Hornet
2541:Double Wasp
2415:October 26,
1226:Wasp Jr. A
1221:Dry weight
1155:Performance
1126:centrifugal
893:Ogden, Utah
697:Junkers F13
645:CAC Winjeel
297:R-1340 Wasp
3936:Categories
3857:V-1650 (L)
3819:V-1650 (P)
3541:R-370 (LB)
3518:R (radial)
3106:Key people
2932:Turboprops
2596:Wasp Major
2546:Hornet (A)
2392:January 7,
2374:January 7,
1470:References
1136:Fuel type:
1104:Valvetrain
1097:Components
1088:Dry weight
851:Robins AFB
596:Avro Anson
443:Avro Anson
439:floatplane
415:, and the
400:, and the
224:1929-1953
177:First run
99:April 2018
69:newspapers
3908:See also:
3571:R-540 (K)
3566:R-540 (W)
3546:R-370 (K)
3488:O-540 (L)
3483:O-540 (F)
3448:O-360 (L)
3443:O-360 (C)
3413:O-200 (F)
3408:O-200 (C)
3159:See also:
2747:Turbofans
2652:Turbojets
1258:sea level
1232:sea level
1081:Diameter:
998:Data from
986:Caloundra
799:Waco S3HD
764:amphibian
746:PWS-24bis
619:Bell XV-3
221:Produced
3019:Propfans
3002:T800-APW
2857:SuperFan
2551:Hornet B
2519:R-2180-E
2514:R-2180-A
2261:(1956),
2182:Archived
2083:Archived
2073:Archived
1995:Archived
1923:Archived
1849:Archived
1777:Archived
1767:Archived
1757:Archived
1747:Archived
1407:See also
1130:impeller
874:Virginia
517:Variants
3875:VG-1410
3756:XR-7755
3282:IV-2220
3277:IV-2040
3272:IV-1430
3249:XH-3730
3244:XH-3130
3239:XH-2600
3234:XH-2470
3229:XH-2240
3071:GG4/FT4
3066:GG3/FT3
2846:RTF-180
2816:PW1000G
1075:Length:
1057:⁄
1035:⁄
974:, near
320:⁄
234:39,037
83:scholar
3911:X-1800
3895:W-2779
3834:V-3420
3829:V-1950
3824:V-1710
3814:V-1570
3809:V-1560
3804:V-1510
3799:V-1460
3794:V-1440
3789:V-1400
3784:V-1237
3779:V-1150
3751:R-4360
3746:R-4090
3741:R-3350
3736:R-2800
3731:R-2600
3726:R-2180
3721:R-2160
3716:R-2060
3711:R-2000
3706:R-1860
3701:R-1830
3696:R-1820
3691:R-1750
3686:R-1690
3681:R-1670
3676:R-1640
3671:R-1535
3666:R-1510
3661:R-1454
3656:R-1340
3651:R-1300
3646:R-1044
3636:DR-980
3508:O-1230
3254:H-4070
3224:H-1640
3027:578-DX
2950:JFTD12
2852:STF200
2841:PW6000
2836:PW5000
2831:PW4000
2826:PW2000
2821:PW1120
2786:JTF10A
2755:GP7000
2534:R-4360
2529:R-2800
2524:R-2270
2509:R-2060
2504:R-2000
2499:R-1860
2494:R-1830
2489:R-1690
2484:R-1535
2479:R-1340
2302:Moscow
2251:
2237:
1495:Flight
1395:. See
1200:Engine
1045:Stroke
598:(Mk V)
490:, and
478:, and
471:, and
411:, the
396:, the
309:stroke
270:radial
85:
78:
71:
64:
56:
3852:V-770
3774:V-720
3641:R-985
3631:R-975
3626:R-915
3621:R-830
3616:R-790
3611:R-760
3606:R-755
3601:R-720
3596:R-680
3591:R-670
3586:R-600
3581:R-550
3576:R-545
3561:R-500
3556:R-440
3551:R-420
3536:R-270
3531:R-265
3526:R-250
3503:O-805
3498:O-580
3493:O-550
3478:O-520
3473:O-480
3468:O-470
3463:O-435
3458:O-425
3453:O-405
3438:O-335
3433:O-300
3428:O-290
3423:O-235
3418:O-205
3403:O-190
3398:O-180
3393:O-175
3388:O-170
3383:O-150
3378:O-145
3373:O-100
3335:L-825
3330:L-510
3325:L-440
3320:L-410
3315:L-390
3310:L-375
3305:L-365
3300:L-330
2944:APW34
2922:XA103
2917:XA101
2863:V2500
2811:JTF22
2806:JTF17
2801:JTF16
2796:JTF14
2791:JT10D
2781:JTF10
2474:R-985
2275:(PDF)
2268:(PDF)
1491:(PDF)
1475:Notes
1368:6.7:1
1348:80/87
1342:6.0:1
1322:80/87
1316:6.0:1
1296:80/87
1290:6.0:1
1264:6.0:1
1238:5.0:1
1181:6.0:1
1016:Type:
919:near
910:near
891:near
868:near
334:R-985
180:1929
146:Type
90:JSTOR
76:books
3368:O-90
3363:O-45
3358:O-40
3353:O-15
3046:RL10
3008:T900
2992:XT57
2982:XT45
2912:TF33
2907:TF30
2896:F401
2891:F135
2886:F119
2881:F117
2876:F105
2871:F100
2776:JT9D
2771:JT8D
2766:JT4D
2761:JT3D
2695:JT12
2690:JT11
2680:JT8A
2665:JT4A
2660:JT3C
2586:Wasp
2417:2019
2394:2010
2376:2010
2358:2009
2340:2009
2283:2009
2249:ISBN
2235:ISBN
2214:2009
2174:2009
2145:2009
2113:2009
2066:2009
2037:2009
1987:2009
1958:2009
1915:2009
1886:2009
1841:2009
1812:2009
1739:2009
1710:2009
1538:2009
1503:2009
1371:10:1
1345:10:1
1339:same
1319:10:1
1313:same
1293:10:1
1235:same
1108:Two
1023:Bore
860:The
445:and
426:and
307:and
305:bore
264:The
62:news
3076:FT8
2997:T73
2987:T52
2977:T34
2970:PT5
2965:PT4
2960:PT3
2955:PT2
2901:RM8
2737:J91
2732:J75
2727:J60
2722:J58
2717:J57
2712:J52
2707:J48
2702:J42
2685:JT9
2675:JT7
2670:JT6
2642:PT1
1374:100
1267:8:1
1241:7:1
1001:FAA
984:in
965:in
946:in
937:in
928:in
901:in
882:in
872:in
864:'s
456:'s
311:of
45:by
3938::
3153:†
2324::
2129:,
2102:,
2079:,
2026:,
1942:,
1860:^
1796:,
1773:,
1763:,
1699:,
1668:^
1650:^
1632:^
1595:^
1581:^
1567:^
1545:^
1522:,
1511:^
1493:.
1270:80
1244:68
1059:16
1037:16
849:,
494:.
486:,
419:.
322:16
3194:e
3187:t
3180:v
3029:†
3010:†
3004:†
2946:†
2934:/
2903:†
2865:†
2859:†
2848:†
2757:†
2447:e
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