137:, and the turbine only acted to power the compressor to continue the cycle). Although there would be some loss of charge during the burning period, and thus the design would be less efficient than the true Otto cycle, it would nevertheless be somewhat more efficient than a traditional jet engine, at the cost of some complexity.
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The design was based on the HeS 30 not only to make parts more readily available as well as to make direct comparisons between the two easier. The main changes were to reduce the compression ratio of the compressor to about 2:1 (from 2.8:1), and add the new combustion chambers. The new chambers were
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The operational cycle of the engine is somewhat similar to a conventional six-cylinder engine, except the compressor did all the compressing instead of a piston stroke, and the chamber only served as a combustion chamber, rather than a compression, combustion and expansion chamber as in a piston
121:, but at a higher pressure ratio, was channeled into the cylinders in turn, closed off with the poppet valves, and then burned. By the time the combustion was complete the pressure in the flame cans would be much higher, although the actual
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considerably larger than the originals, forcing a reduction in the number from ten to six burners. The valve stems projected forward into streamlined fairings in the intake area behind the compressor.
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is not specified. The hot gas was then released, and flowed through a turbine to extract power, instead of forcing a piston to move (although most of the output in the expected
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It appears the HeS 40 was never built, and remained a paper design. Nevertheless, work on the design was ended by 1942, by which point the HeS 30 was making good progress.
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that sealed off the chambers during firing. Constant-volume combustion, similar to the
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starting some time in 1940 or 41. It was based on the mechanical layout of the
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used in most piston engines, is considerably more fuel efficient than the
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engine. Compressed air, similar to an automobile equipped with a
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German Jet Engine and Gas
Turbine Development 1930–1945
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205:. Vol. 1. Ramsbury: The Crowood Press.
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203:Turbojet History and Development 1930–1960
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27:Constant Volume Gas turbine jet engine
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92:with oversized ones including large
72:was an experimental constant-volume
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516:Centrifugal-flow turbojet engines
129:engine format - as opposed to a
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70:(HeS - Heinkel Strahltriebwerke)
104:used in a typical jet engine.
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102:constant-pressure combustion
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521:Heinkel aircraft engines
201:Kay, Anthony L. (2007).
182:Kay, Anthony L. (2002).
133:- would be extracted as
48:Heinkel-Hirth Motorenbau
526:1940s turbojet engines
186:. The Crowood Press.
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212:978-1-86126-912-6
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176:Bibliography
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119:turbocharger
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78:Adoph Müller
76:designed by
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58:Adoph Müller
329:Two-strokes
80:'s team at
510:Categories
149:References
131:turboshaft
98:Otto cycle
90:flame cans
74:jet engine
54:Designer
127:turbojet
495:HeS 011
141:History
82:Heinkel
38:Germany
19:HeS 40
490:HeS 60
485:HeS 50
480:HeS 40
475:HeS 30
319:HM 515
314:HM 512
309:HM 508
304:HM 506
299:HM 504
294:HM 501
289:HM 500
284:HM 150
209:
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135:thrust
108:Design
86:HeS 30
470:HeS 8
465:HeS 3
460:HeS 1
362:F-263
279:HM 60
251:Hirth
24:Type
442:4201
437:4103
432:3703
427:3702
422:3701
417:3503
412:3502
407:3203
402:3202
397:3003
392:3002
387:2706
382:2704
377:2703
372:2702
367:2302
357:F-40
352:F-36
347:F-33
342:F-30
337:F-23
274:HM 8
253:and
207:ISBN
188:ISBN
65:The
512::
157:^
243:e
236:t
229:v
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