31:
131:
had been engaged as consultant designer and now began work on an air-cooled inverted six-cylinder design. Following a change of personnel, the engine was given the go-ahead in 1932, with aircraft manufacturer
237:
150:
The engine was first named the E97 and introduced to the market in 1932. However, none were sold, and, after slight modifications, it was reintroduced the next year as the
Javelin.
127:
identified a market for light aircraft engines, noting that light aircraft cost much the same as their car and were being bought by much the same class of person.
707:
551:
717:
712:
522:
722:
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By 1935 Napier needed to refocus their efforts and, with
Halford's broadly similar but more powerful
432:
410:
92:
405:
157:
140:
385:
204:
A Mark III with a starter motor, generator and other improvements for the Martin Baker MB.1.
8:
284:
153:
Development continued but only a few were sold for experimental and prototype aircraft.
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226:
144:
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582:
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44:
633:
495:"Messrs. Napier Inaugurate a New Policy with a Six‐Cylinder Air‐Cooled Type",
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587:
266:
231:
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128:
112:
108:
96:
79:
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A longer stroke and increased capacity version of 160 hp (120 kW).
184:
First version bearing the
Javelin name, producing 150 hp (110 kW).
654:
638:
628:
623:
607:
420:
133:
670:
597:
577:
327:
311:
529:
30:
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41:
486:, Weidenfeld & Nicolson, 1958. pp. 132-3, 141, 145-6.
143:
the poppet valves were operated by a single gear driven
517:. Marlborough, Wiltshire: Airlife Publishing, 2003.
103:. First flown in March 1934 in the prototype of the
107:racing aircraft, the engine was also used in the
699:
484:Men and Machines: D. Napier & Son 1808-1958
478:
476:
474:
160:now on the market, the Javelin was withdrawn.
545:
497:Aircraft Engineering and Aerospace Technology
262:6-cylinder inverted inline air-cooled engine.
243:
471:
552:
538:
499:, Vol.4, No.8, 1 August 1932. pp. 210-212.
253:
708:Aircraft air-cooled inline piston engines
515:British Piston Engines and their Aircraft
455:
453:
118:
559:
700:
450:
533:
482:Charles Wilson and William Reader;
13:
372:150 hp (112 kW) at 2,000 rpm
14:
739:
136:identified as a likely customer.
718:Inverted aircraft piston engines
238:Cockatoo Dockyard L.J.W.7 Codock
174:Initial version offered in 1932.
29:
506:
359:Direct drive, left hand tractor
208:
198:
489:
462:
363:
188:
95:air-cooled engine designed by
1:
713:1930s aircraft piston engines
438:
320:
178:
7:
394:
338:Twin updraught carburettors
163:
91:was a British six-cylinder
10:
744:
332:Overhead cam poppet-valves
244:Specifications (Javelin I)
679:
663:
647:
616:
570:
221:Percival Gull Four Mk.IIA
80:Percival Gull Four Mk IIA
28:
23:
16:British air-cooled engine
443:
433:List of aircraft engines
411:de Havilland Gipsy Queen
723:Napier aircraft engines
254:General characteristics
168:
617:Turboprop / Turboshaft
406:de Havilland Gipsy Six
227:Percival Mew Gull Mk.I
158:de Havilland Gipsy Six
141:de Havilland Gipsy Six
119:Development and design
386:Power-to-weight ratio
728:Straight-six engines
468:Lumsden 2003, p.174.
459:Lumsden 2003, p.173.
280:5.25 in (133.35 mm)
125:D. Napier & Son
101:D. Napier & Son
77:(one aircraft only)
55:D. Napier & Son
400:Comparable engines
289:501 cu in (8.21 L)
215:Martin-Baker M.B.1
75:Martin-Baker M.B.1
70:Major applications
695:
694:
377:Compression ratio
295:58.5 in (1486 mm)
271:4.5 in (114.3 mm)
145:overhead camshaft
139:Unlike the later
105:Percival Mew Gull
85:
84:
735:
554:
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540:
531:
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493:
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390:0.365 hp/lb
307:31.5 in (800 mm)
301:26 in (660.4 mm)
111:biplane and the
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513:Lumsden, Alec.
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348:Cooling system:
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316:410 lb (186 kg)
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571:Piston engines
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416:Menasco B6/B6S
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355:Reduction gear
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217:(Javelin IIIA)
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89:Napier Javelin
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26:
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664:Gas-generator
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624:Coupled Naiad
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427:Related lists
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370:Power output:
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232:Spartan Arrow
230:
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223:(Javelin III)
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137:
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129:Frank Halford
126:
116:
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113:Percival Gull
110:
109:Spartan Arrow
106:
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99:and built by
98:
97:Frank Halford
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51:Manufacturer
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564:aero engines
514:
507:Bibliography
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421:Ranger L-440
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336:Fuel system:
335:
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310:
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285:Displacement
283:
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259:
248:
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209:Applications
199:Javelin IIIA
155:
152:
149:
138:
134:de Havilland
122:
88:
86:
18:
364:Performance
189:Javelin III
45:aero-engine
702:Categories
439:References
350:Air-cooled
342:Fuel type:
328:Valvetrain
321:Components
312:Dry weight
61:First run
249:Data from
179:Javelin I
687:Scorpion
583:Culverin
395:See also
164:Variants
123:In 1930
24:Javelin
634:Gazelle
593:Javelin
305:Height:
293:Length:
680:Rocket
603:Rapier
588:Dagger
561:Napier
521:
344:Petrol
299:Width:
276:Stroke
234:(E.97)
93:inline
42:Piston
655:Nomad
639:Naiad
629:Eland
608:Sabre
444:Notes
381:5.3:1
260:Type:
64:1932
38:Type
671:Oryx
598:Lion
519:ISBN
267:Bore
169:E.97
87:The
578:Cub
704::
473:^
452:^
147:.
115:.
553:e
546:t
539:v
525:.
388::
379::
357::
330::
314::
287::
278::
269::
Text is available under the Creative Commons Attribution-ShareAlike License. Additional terms may apply.
