178:(BHP) which was selected for production on the recommendation of the Internal Combustion Engine Sub-Committee of the Advisory Committee for Aeronautics in March 1917, despite the engine being still under test. Although BHP's design was projected to produce 300 hp (224 kW) the engine's output came in below expectations. The original name given to the engine was the 200 hp BHP. The engine's name was later changed to the 230 hp BHP to better reflect its actual output. BHP formed Galloway Engineering to produce the engine which, when produced by Galloway, became known as the
418:
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Cylinders are constructed in blocks of three. Steel sleeves, open at both ends, are screwed into an aluminium casting which forms the heads for three cylinders and the inlet manifold. A separate aluminium water jacket surrounds the cylinder barrels and is bolted to the head casting and made tight at
200:
In wartime
British military service, versions of the engine built by Siddeley-Deasy and Galloway were both known as the 230 hp BHP although they had different dimensions and few interchangeable parts. The Siddeley-Deasy version of the engine was by far the more numerous of the two designs and
231:
The crankshaft is carried in seven plain bearings. Pistons are made from aluminium and fitted with four rings, the lower top ring and the one below the wrist pin being used as oil scrapers. Dual ignition is supplied by two magnetos mounted crosswise and driven from the camshaft.
247:. In use it proved to be highly troublesome, making the aircraft significantly inferior to the type it replaced. The engine was also installed untidily, with the cylinder heads protruding. The D.H.9, as a type, was improved by replacing the Puma engine with the
143:
in August 1917, production continued until
December 1918. In operational service, the engine was unreliable and failed to deliver its rated power. At least 4,288 of the 11,500 ordered engines were delivered, orders were cancelled following the
235:
The connecting rods have "H" sections and four-bolt caps. Rods were stamped with part numbers and inspection marks that created weak points leading to crack propagation which likely contributed to the type's poor service reliability.
193:
himself worked on the engine and, after making many changes, the various iterations of the engine built by
Siddeley-Deasy all became known as the Siddeley Puma. The Puma was later developed into the
946:
228:
Each cylinder contains one large inlet valve and two smaller exhaust valves. This unusual three valve per cylinder design was common to both the
Adriatic and Puma engines.
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189:, to be built at their Parkside works. In addition to building the Adriatic engines, Galloway also supplied components to Siddeley-Deasy.
190:
213:, newly appointed as Controller of Aeronautical Supplies and a member of the Air Board, hoped would be easier to mass produce than the
389:. After a complete overhaul, and some safety related modifications, the engine was used to power the company's restored Airco DH.9.
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but as performance was unsatisfactory, alternative engines were used in a subsequent prototype of the type and production models.
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the bottom by annular nuts screwed against rubber glands. The bronze valve seats were expanded into place.
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The BHP engine was one of a number of engines with cast aluminium engine blocks that
768:
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924:
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807:
Ewer, Peter. 'William Weir: architect of air power? The First World War chapter',
41:
397:
Preserved examples of the
Siddeley Puma are on display at the following museums:
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A Siddeley build 200 hp BHP engine has been restored to airworthy condition by
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The
International Journal for the History of Engineering & Technology
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139:. The first Puma engines left the production lines of Siddeley-Deasy in
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378:
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416:
921:
Contemporary technical description of the engine with photographs
861:
This article incorporates text from this source, which is in the
201:
the only one in service in continental Europe at the end of WW1.
928:
550:
265 hp (198 kW) at 1,500 rpm for short-term maximum power
221:, engines that only highly skilled workers could build.
131:
is a
British aero engine developed towards the end of
826:. Marlborough, Wiltshire: Airlife Publishing, 2003.
1143:
1112:
1081:
965:
255:. The unit was also used in the prototypes of the
239:The Puma engine was primarily used in the British
590:Siddeley-Deasy Puma at the Canada Aviation Museum
568:67 US gal/h (258 L/h) at short-term maximum power
940:
8:
520:One intake + two exhaust valves per cylinder
174:The Puma was based on an engine designed by
377:, an aircraft restoration company based in
185:The 230 hp BHP engine was also licensed to
947:
933:
925:
148:. Production was continued under the name
824:British Piston Engines and their Aircraft
547:*250 hp (186 kW) at 1,400 rpm for takeoff
899:"The Siddeley Aero Engines: The "Puma""
661:
31:
7:
911:(14): 429–431. 3 April 1919. No. 536
726:
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689:
687:
685:
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152:when the manufacturer was bought by
1192:Armstrong Siddeley aircraft engines
25:
767:Saunders, Andy (September 2013).
423:National Military Museum, Romania
402:National Military Museum, Romania
385:. The engine was supplied by the
856:
841:. Grub Street Publishing, 2019.
565:* 14 US gal/h (54 L/h) at cruise
387:Canada Aviation and Space Museum
40:
27:WW1 era inline-6 aircraft engine
872:. Doubleday and Company, 1967.
855:. The Otterbein Press , 1921.
704:R.A.F Field Service Pocket Book
211:William Weir, 1st Viscount Weir
1:
1197:1910s aircraft piston engines
853:Airplane Engine Encyclopedia
839:DH9: From Ruin to Restoration
817:10.1080/17581206.2023.2237080
706:. April 1918. pp. 10–11.
343:Royal Aircraft Factory F.E.2
176:Beardmore Halford Pullinger
170:Beardmore Halford Pullinger
1213:
886:Profile Publications, 1967
167:
48:
39:
34:
645:List of aircraft engines
446:6-cylinder water-cooled
870:Aircraft of World War I
769:"Treasure From the Raj"
730:Angle, 1921 pp. 448-452
577:0.41 hp/lb (0.67 kW/kg)
559:0.23 hp/in³ (10.5 kW/L)
495:43.6 in (1,107 mm)
483:69.9 in (1,175 mm)
438:General characteristics
150:Armstrong Siddeley Puma
18:Armstrong Siddeley Puma
884:The de Havilland DH.10
811:, 2023 pp. 1–19.
693:Lumsden 2003, p. 81-86
591:
450:aircraft piston engine
426:
407:Science Museum, London
205:Design and development
589:
573:Power-to-weight ratio
468:7.48 in (190 mm)
459:5.71 in (145 mm)
420:
413:Specifications (Puma)
243:bomber aircraft, the
504:645 lb (293 kg)
477:1,149 in³ (18.832 L)
363:Supermarine Sea King
261:pusher configuration
793:Lumsden 2003, p. 86
716:Ewer, 2023 pp. 7-10
677:Black, 2019 p.27-30
595:Related development
489:24 in (610 mm)
358:Supermarine Channel
353:Short Silver Streak
348:Short Sporting Type
328:Handley Page Type W
303:Bristol F.2 Fighter
154:Armstrong Whitworth
956:Armstrong Siddeley
612:Comparable engines
592:
427:
393:Engines on display
313:De Havilland DH.50
283:Airco DH.10 Amiens
259:in a twin-engined
257:Airco DH.10 Amiens
158:Armstrong Siddeley
93:Major applications
1179:
1178:
757:Bruce 1967, p. 4.
748:Munson, 1967 p.17
606:Galloway Adriatic
563:Fuel consumption:
333:Henderson H.S.F.1
215:Rolls-Royce Eagle
180:Galloway Adriatic
125:
124:
16:(Redirected from
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868:Munson, Kenneth
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773:Aviation History
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739:Black, 2019 p.90
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421:Siddley Puma in
135:and produced by
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69:United Kingdom
65:National origin
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555:Specific power
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187:Siddeley-Deasy
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137:Siddeley-Deasy
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115:Developed into
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878:0-7110-0356-4
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863:public domain
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847:9781911621836
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832:1-85310-294-6
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639:Related lists
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545:Power output:
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191:John Siddeley
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129:Siddeley Puma
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74:Manufacturer
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58:Inline engine
56:
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52:
47:
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30:
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1125:Double Mamba
1052:
1018:Jaguar Major
959:aero engines
913:. Retrieved
908:
902:
883:
882:Bruce, J.M.
869:
852:
838:
837:Black, Guy.
823:
808:
801:Bibliography
789:
772:
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703:
698:
673:
664:
638:
637:
611:
610:
594:
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571:
562:
553:
544:
534:Water-cooled
531:
524:Fuel system:
523:
514:
498:
492:
486:
480:
473:Displacement
471:
462:
453:
443:
432:
429:
428:
396:
372:
323:Fokker F.III
267:Applications
251:to make the
238:
234:
230:
227:
223:
208:
199:
184:
173:
149:
128:
126:
105:Number built
29:
1063:Tiger (V12)
1003:Genet Major
623:Benz Bz.III
539:Performance
527:Carburettor
318:Fokker F.II
245:Airco D.H.9
241:World War I
156:and became
133:World War I
98:Airco D.H.9
1186:Categories
1113:Turboprops
1033:Lynx Major
651:References
601:ADC Nimbus
516:Valvetrain
509:Components
500:Dry weight
278:Airco DH.9
273:Airco DH.4
249:Liberty 12
195:ADC Nimbus
168:See also:
164:Background
120:ADC Nimbus
84:First run
1082:Turbojets
1073:Wolfhound
993:Deerhound
973:Boarhound
781:1076-8858
430:Data from
369:Survivors
146:Armistice
1161:Screamer
1099:Sapphire
1038:Mongoose
915:12 April
582:See also
375:Retrotec
293:Avro 547
288:Avro 539
141:Coventry
1166:Stentor
1156:Snarler
1048:Panther
1023:Leopard
978:Cheetah
628:Hiero 6
493:Height:
481:Length:
433:Lumsden
1135:Python
1058:Serval
1013:Jaguar
988:Cougar
904:Flight
876:
845:
830:
779:
487:Width:
464:Stroke
448:inline
379:Sussex
253:D.H.9A
219:Falcon
109:4,288
1171:Gamma
1130:Mamba
1104:Viper
1089:Adder
1043:Ounce
1008:Hyena
998:Genet
983:Civet
656:Notes
444:Type:
87:1917
54:Type
35:Puma
1151:Beta
1053:Puma
1028:Lynx
917:2024
874:ISBN
843:ISBN
828:ISBN
777:ISSN
455:Bore
217:and
127:The
1120:ASP
1094:ASX
813:doi
1188::
909:XI
907:.
901:.
775:.
771:.
721:^
682:^
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20:)
Text is available under the Creative Commons Attribution-ShareAlike License. Additional terms may apply.
