Aviation, Imagination of the Future from the Past

Portsmouth (Langstone Harbour).
In the inter-war period when flying boats were widely used by Imperial Airways, there was a base at Southampton, with additional plans for possible expansion. Also, the early plans for Portsmouth Airport also resulted in proposals for a Flying Boat terminal in Langstone Harbour to the east of Portsmouth.

 

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No idea how this is supposed to work. There would seem to be rockets driving turbines for travel in the atmosphere and pure rockets beyond, but that is not what the illustration shows. Spectacular, though.
 

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A case of getting the wrong end of the stick.
From Robert Goddard's wiki-entry:
From 1940 to 1941, Goddard worked on the P series of rockets, which used propellant turbopumps (also powered by gasoline and liquid oxygen). The lightweight pumps produced higher propellant pressures, permitting a more powerful engine (greater thrust) and a lighter structure (lighter tanks and no pressurization tank), but two launches both ended in crashes after reaching an altitude of only a few hundred feet. The turbopumps worked well, however, and Goddard was pleased.
 
Apologies, I had thought that interview included stuff on future aviation such as personal air transport.
 
An interesting large autogyro from the 1930 novel The Flying Windmill by Eustace L. Adams.
A 12-seat tri-motor autogyro built by the fictional Apex Aeroplane and Motor Corporation in the book.
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From Aeroplane magazine 1950,

what was this ?.
 

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@hesham
Pages 496 and 497 (1.png, 2.png) are an evaluation of theoretical work by the French Professor A. Magnan on entomopters (devices intended to mimic insect flight - think of dragonflies and the like). Upscaling insect-mimicking flight to a device big enough to carry a human pilot comes with challenging demands on materials used in the device´s construction, with the vigorous changes of direction-of-movement seen in dragonflies' wings being a major source of concern for the article's writer - the writer foresees momentary acceleration of wing parts up to as much as 1000 Gs. Enough to stress many construction materials beyond breaking point.
The drawing at the bottom of page 497 is the writer's attempt to have insectiform wings without the 1000 G flapping-up-and-down, by sticking the wings on rotors: feather the wings/blades vertically on their way up, orientate them for vertical propulsion on the way down. In the USA, from 1930-1939, a Mr A.L. Jordanglou was involved in experiments to turn Prof. Magnan's work into practical machinery, and Jordanglou appears to have considered the entomopter as a possible configuration for a human powered aircraft. The article's writer is skeptical about this notion.

Page 498 (3.png) is about the consequences of having holes in a construction, an entirely different matter.
 
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A not unattractive fictional Luftwaffe VTOL fighter from a Commando comic.
This is actually a reprint of a 1976 edition, proof that exotic Luft 46 designs were not just a post 1990 fad.
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1976 issue, a neat looking design, kindv like a Do.335 with Fw.190 cockpit and new back end ?
might be worth modelling too. Anyone fancy doodling a ga drawing of the 'Hawk' ? :)
 

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From, Popular Science magazine,

a retractable pontons.

 

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Having had a little experience of non-RIB inflatable dinghies, those pontoons prompted a cat-scattering shriek of, 'Nononononono !'

Now, if the lower part, the boaty-bit, was solid, but the upper portion inflated, it might survive above wary taxi-speed...

Which was the flying boat / sea-plane whose lower, 'boaty' portion of hull was lowered for take-off / landing, retracted against main fuselage for reduced drag in flight ??
 
Blackburn B-44​





In 1942, Blackburn proposed the B-43, a single seat twin-float fighter with a Napier Sabre engine based on the Firebrand.

In 1943 they came with the idea of the B-44, a much more complex design with retractable hydraulically-operated floats.

The idea was not new. German already built the Ursinus Seaplane during World War One The plane was fitted with a retractable twin-float undercarriage and reached a maximum speed equivalent to that of the British Sopwith Snipe.



Bill Barnes adventure stories made popular again the formula of the 30s with two extraordinary fiction models, the Scarlet Stormer in 1934 and the Lancer in 1936.



In 1938 the French aircraft manufacturer Latécoère published three projects (no. 671, 672 and 673) of seaplane fighters fitted with retractable floats.



In March 1940 the Blackburn firm built and fly tested the B-20, a medium-sized general reconnaissance flying boat equipped with hydraulically operated retractable hull bottom.

Testing was satisfactory but the only prototype was destroyed in a crash in April and the RAF preferred to recommend the manufacturing of the Saro Lerwick instead.



The B-44 have benefited from the experience obtained with the B-20, but the unfortunate Firebrand story, the increasing number of available aircraft carriers in the Pacific and the success in building ground airfields after amphibious landing were against its manufacturing and the idea never came to materialise. The project was cancelled in 1944.





B-44 technical data



Power plant: One Napier Sabre Mk IV, 24 cylinder ‘H’, liquid cooled engine, rated at 2,300 hp, driving two contra-rotating airscrews, wingspan: 50 ft (15.2 m), length (flight configuration): 39.7 ft (12.1 m), height (water configuration): 13.3 ft (4.06 m), wing surface: 393 sq. ft (35.4 sq. m), maximum speed: 360 mph (579 kph), service ceiling: 38,000 ft (11,582 m), range: 1,000 mls (1,609 km), armament: four wing-mounted 20 mm Hispano Mk.V cannons.
 

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Having had a little experience of non-RIB inflatable dinghies, those pontoons prompted a cat-scattering shriek of, 'Nononononono !'

Now, if the lower part, the boaty-bit, was solid, but the upper portion inflated, it might survive above wary taxi-speed...

Which was the flying boat / sea-plane whose lower, 'boaty' portion of hull was lowered for take-off / landing, retracted against main fuselage for reduced drag in flight ??
In-flight inflatable floats are really only practical at the slow airspeeds of ultra-lights which touch-down at less than 50 mph. see Lotus inflated floats. But Lotus floats still have hard plastic (ABS?) planing surfaces on the front.

True inflatable in inflight floats are limited to the emergency floatation bolted onto many helicopters that routinely fly over water. Even a few military helicopters - designed from the start to be amphibious (e.g. Sikorsky S-61 Sea King) - are often fitted with after-market emergency floatation that doubles the volume of sponsons.
 

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