Heinkel He 275

60-ton Flyng-Wing Bomber
Descrizione
Tipo	Bombardiere
Equipaggio	2
Progettista	Siegfried Gunter
Costruttore	Heinkel
Esemplari	nessuno
Dimensioni e pesi
Lunghezza	19,85 m
Apertura alare	31,50 m
Propulsione
Motore	4 turbogetti Heinkel-Hirth HeS 109-011
Spinta	12,75 kN (1 300 kgf) ciascuno
Prestazioni
Raggio di azione	28 000 km (15 119 nmi)
Armamento
Bombe	3 000 kg
	i dati sono estratti da; Luftwaffe Secret Projects - Strategic Bombers 1935-45
	voci di aerei militari presenti su Wikipedia

Heinkel He 275^[2]^[3]^[4] è stato il codice RLM identificativo per una designazione o requisito del Ministero dell'Aria del Reich nel periodo 1933-1945, di cui non esistono sviluppi conosciuti da progetti o prototipi sviluppati dalla Ernst Heinkel Flugzeugwerke^[5].

Unico riferimento è la presenza del codice RLM, non confermato, come di un bombardiere con quattro motori a reazione^[6].

Nel 1945, riferisce in un report del progettista Siegfried Günter^[7] come responsabile degli ufficio Progetto e Sviluppo a Vienna, la Heinkel avrebbe lavorato su una serie di progetti di bombardieri a lungo raggio plurimotore a getto, con configurazioni sia di tipo convenzionale che di tipo ad ala volante, per il requisito RLM denominato Amerika Bomber a cui avrebbe partecipato a fine 1945 con la proposta denominato "60-ton Flying-Wing Bomber"^[7] come precursore dell'Heinkel He 277.

Note modifica

^ Herwig e Rode 1998.
^ (DE) Heinz J. Nowarra, Die deutsche Luftrüstung 1933-1945, Bernard & Graefe, 1988, ISBN 3-7637-5467-9.
^ (EN) Antony L. Kay, E.J. Creek e J.R. Smith, German Aircraft of the Second World War, Putnam Publishing Group, 1972, p. 745, ISBN 0-370-00024-2.
^ (EN) Ferenc A. Vajda e Peter G. Dancey, German Aircraft Industry and Production: 1933-1945, Society of Automotive Engineers Inc, 1998, pp. 288, 329, ISBN 0-7680-0246-X.
^ Tabella 9-M produzione Heinkel Rostock periodo 1931-1940 http://www.mcfarlandbooks.com/book-2.php?id=978-1-85310-864-8 ^{[collegamento interrotto]}, su mcfarlandbooks.com.
^ German Military Aircraft Designations (1933-1945), su designation-systems.net. URL consultato il 9 aprile 2016.
^ ^a ^b (EN) Dieter Herwig e Heinz Rode, LUFTWAFFE SECRET PROJECTS: STRATEGIC BOMBERS 1935-1945, Stuttgart, Motorbuch Verlag, 1999 [1998], pp. 68, 144, ISBN 1-85780-092-3.
«Heinkel Projects for a Four-Jet Long-Range Bomber
According to a report which Dipl-lng Siegfried Günter - who had been head of Heinkel’s Project and Design Department in Vienna — was required to write for the US Technical Service on 1st October 1945, Heinkel engineers had been engaged on designs for fourjet long-range bombers right up until May 1945. These designs included not only aircraft of standard ‘fuselage and tail’ configuration, but also of flying-wing layout. Work was concentrated particularly on one flying-wing bomber which was powered by four HeS 109-011 jet engines, each developing 1,300 kg (2,865 lb) static thrust, and which weighed 26 tons. Another flydng-wing bomber was to have been fitted with either four BMW 109-018s, each of 3,000 kg (6,612 lb) static thrust, or six Junkers Jumo 004 jet engines, each of 1,300 kg (2,865 lb) static thrust. This machine which possessed a very high wing loading, would have weighed 60 tons. One specific innovation mentioned by Siegfried Günter in his report was that the 60ton project was to have been the first aircraft to feature wings incorporating a two-stage sweep, transitioning from 45° to 35°, which would have resulted in a new ‘biconvex profile’ with a 10% relative thickness. These developments harked back to a specification which had been drawn up on 22nd February 1945 in the wake of a ‘Reichsmarschall Conference’ held at Dessau. Again according to Günter’s report, the 60ton flying- wing project was to have combined a 3,000 kg (6,612 lb) bomb load with a range of 28,000 km (17,388 miles). Dipl-Ing Günter also described more orthodox bomber projects, with fuselages and tails, which had performance figures comparable to the designs of Junkers, Messerschmitt and Horten.»

Bibliografia modifica

(DE) Heinz J. Nowarra, Die deutsche Luftrüstung 1933-1945, Bernard & Graefe, 1988, ISBN 3-7637-5467-9.
(EN) Antony L. Kay, E.J. Creek e J.R. Smith, German Aircraft of the Second World War, Putnam Publishing Group, 1972, p. 745, ISBN 0-370-00024-2.
(EN) Ferenc A. Vajda e Peter G. Dancey, German Aircraft Industry and Production: 1933-1945, Society of Automotive Engineers Inc, 1998, pp. 288, 329, ISBN 0-7680-0246-X.
(EN) Dieter Herwig e Heinz Rode, LUFTWAFFE SECRET PROJECTS: STRATEGIC BOMBERS 1935-1945, Stuttgart, Motorbuch Verlag, 1999 [1998], pp. 68, 144, ISBN 1-85780-092-3.

Collegamenti esterni modifica

60 Tonne Jet Bomber Project Archiviato il 3 ottobre 2017 in Internet Archive.
(EN) 60 Tonne Jet Bomber Project, su xplanes3d.com. URL consultato il 30 marzo 2016 (archiviato dall'url originale il 3 ottobre 2017).

Portale Aviazione

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Portale Trasporti

[1] Herwig e Rode 1998.

[2] (DE) Heinz J. Nowarra, Die deutsche Luftrüstung 1933-1945, Bernard & Graefe, 1988, ISBN 3-7637-5467-9.

[3] (EN) Antony L. Kay, E.J. Creek e J.R. Smith, German Aircraft of the Second World War, Putnam Publishing Group, 1972, p. 745, ISBN 0-370-00024-2.

[4] (EN) Ferenc A. Vajda e Peter G. Dancey, German Aircraft Industry and Production: 1933-1945, Society of Automotive Engineers Inc, 1998, pp. 288, 329, ISBN 0-7680-0246-X.

[5] Tabella 9-M produzione Heinkel Rostock periodo 1931-1940 http://www.mcfarlandbooks.com/book-2.php?id=978-1-85310-864-8 ^{[collegamento interrotto]}, su mcfarlandbooks.com.

[6] German Military Aircraft Designations (1933-1945), su designation-systems.net. URL consultato il 9 aprile 2016.

[:0-7] (EN) Dieter Herwig e Heinz Rode, LUFTWAFFE SECRET PROJECTS: STRATEGIC BOMBERS 1935-1945, Stuttgart, Motorbuch Verlag, 1999 [1998], pp. 68, 144, ISBN 1-85780-092-3.
«Heinkel Projects for a Four-Jet Long-Range Bomber
According to a report which Dipl-lng Siegfried Günter - who had been head of Heinkel’s Project and Design Department in Vienna — was required to write for the US Technical Service on 1st October 1945, Heinkel engineers had been engaged on designs for fourjet long-range bombers right up until May 1945. These designs included not only aircraft of standard ‘fuselage and tail’ configuration, but also of flying-wing layout. Work was concentrated particularly on one flying-wing bomber which was powered by four HeS 109-011 jet engines, each developing 1,300 kg (2,865 lb) static thrust, and which weighed 26 tons. Another flydng-wing bomber was to have been fitted with either four BMW 109-018s, each of 3,000 kg (6,612 lb) static thrust, or six Junkers Jumo 004 jet engines, each of 1,300 kg (2,865 lb) static thrust. This machine which possessed a very high wing loading, would have weighed 60 tons. One specific innovation mentioned by Siegfried Günter in his report was that the 60ton project was to have been the first aircraft to feature wings incorporating a two-stage sweep, transitioning from 45° to 35°, which would have resulted in a new ‘biconvex profile’ with a 10% relative thickness. These developments harked back to a specification which had been drawn up on 22nd February 1945 in the wake of a ‘Reichsmarschall Conference’ held at Dessau. Again according to Günter’s report, the 60ton flying- wing project was to have combined a 3,000 kg (6,612 lb) bomb load with a range of 28,000 km (17,388 miles). Dipl-Ing Günter also described more orthodox bomber projects, with fuselages and tails, which had performance figures comparable to the designs of Junkers, Messerschmitt and Horten.»

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