Secret Projects of Aviation

Monday, July 5, 2010

Horten Ho XVIII Amerika bomber

The Horten Ho XVIII actually were 3 different projects made by Horten brothers in 1944 in order of RLM requirement for an aircraft with a range of 11000 km (6835 miles) and a bomb load of 4000 kg (8818 lbs). None of aircraft ever archived like that. Five of Germany's top aircraft companies had submitted designs, but none of them met the range requirements for this Amerika Bomber. Horten are one of these company The Hortens were not invited to submit a proposal because it was thought that they were only interested in fighter aircraft.
The Horten brothers realised the failures and redesign the aircraft modified with 6 jumo 004 turbojet and 2 mg turret to protect the aircraft. When the meeting with Messerschmitt and Junkers engineers were helded. These engineers feel unsatsifactory with the first design-the Ho XVIIIa. After that Reimar-one of the Horten brothers feel unhappy and redeisgn it again with 2x He S011 jet engines in each of two fixed main landing gear assemblie. The prototype was proposed to test in the end of 1945 but the Allies advance was too fast and in May 1945, German surrender ended the project

Focke Wulf P II jet project

The P II was a second of the Kurt Tank jet fighter project which was intended to give to the RLM(Reich air ministry) in 1943. The wings were mounted mid-fuselage and had a slight sweep on the leading edge and straight trailing edges. A single Jumo 004B turbojet were slung beneath the fuselage The main advantage was to facilitate maintenance.But there are many other disadvantages on this design, such as the nose wheel blocking the intake on takeoff and landing, foreign matter being sucked into the intake since it was so close to the ground and the destruction of the jet engine in case of a belly landing.Armarments considered to be 2x MK 108 cannons in the nose and 2x MG151 in the wing roots. Because of it disadvantages the project was not followed up and cancelled
References
http://www.luft46.com/fw/fwpiib.html

Diagram of the P II

Arsenal VB-10

The Arsenal VB-10 was a French Tandem engines fighter prototypes developed during and shortly after World War II. It was a monoplane with largely orthodox configuration and retractable tailwheel the VB 10 added a second engine behind the cockpit which drove a second propeller, coaxial with and counter-rotating to the propeller driven by the engine in the nose. Although the aircraft was first designed (and indeed ordered) in 1940, but because of French occupation, the aircrafts could not flown until Europe was freed .But then, the Amee de air changed their favor on the jet technology and age of piston engine was over so the project was cancelled in 1948 and all 6 prototypes were scrapped.
Specification
General characteristics

Crew: one, pilot
Length: 12.98 m (42 ft 7 in)
Wingspan: 15.49 m (50 ft 10 in)
Height: 5.2 m (17 ft 1 in)
Wing area: 35.5 m² (382 ft²)
Powerplant: 2 × Hispano-Suiza 12Zars-15/16, 860 kW (1,150 hp) each

Performance

Maximum speed: 700 km/h (435 mph)
Range: 7,700 km (1,056 miles)
Service ceiling: 11,010 m (36,120 ft)
Rate of climb: 10.2 m/s (2,008 ft/min)

Armament

4 × 20 mm Hispano Suiza HS-404 cannons

References

Sunday, June 27, 2010

Dornier Do 214 heavy flying boat project

Dornier Do 214 is a multi purpose flyingboat originally designated number P 93 for a heavy transporter at first. The Göppingen Gö 8 were used to test for the project .Proposed powerplants were to be 8x Daimler Benz DB 613 piston engines.The front propellers had a 5.0 m (16' 5") diameter, the rear had a 4.6 m (15' 1") diameter. The rear propellers were driven by an extension shaft and were also hinged, which allowed the rear propellers to be raised during takeoff for water clearance . Fuel capacity consisted of 66000 liters in the huge fuselage and 1500 liters contain in each wing.A single fin were added and all 8 engines were monitored by a flight engineer from the central station .The Airliner variant crew are twelve men: a captain, two pilots, navigator, radio operator, two flight engineers, two stewards, two hostesses, and one crew member held in reserve and forty passengers could be carried in comfort and 2.6 tons of freight and luggage could be carried in the lower fuselage storage area. In 1943, a mockup was reconstructed to investigate the best placement of the gun turrets and other military stores but then the flying boat was no longer needed due to worsening war situation.
Specification
Span:60 m
Length:51.6 m
Height:14.3 m
Wing Area:500 m²
Empty Weight:76000 kg
Loaded Weight :145000 kg
References:http://www.luft46.com/dornier/do214.html
http://en.wikipedia.org/wiki/Dornier_Do_214

Monday, June 21, 2010

Boulton Paul P 100

Boulton Paul P 100 is a projected ground attack aircraft submitted by Boulton Paul in response to Specification F. 6/42 which called for a 'single seat low level attack aircraft'. The P.100 was an innovative and forward-thinking design with features that were maybe too advanced for the time such as the unique 'jaw' at the nose which allowed the pilot to escape without danger of hitting the pusher propeller. But later in January 1944, the RAF want to terminated the project because it role already exist on 3 aircraft: the Hawker Typhoon, Tempest and Hurricane.

Specification

Powerplant:1x Rolls Royce Griffon II driving contra rotating props
Span :12.2m
Length:10.4m
Max speed:571 Km/h
Service range:5,182m
Proposed armament :4 x 20mm Cannon or 2 x 40mm + 2 x 20mm canon ,one 47mm Vickers cannon
Ornances:8 x RP3 Rockets,2 x 500 lb. bombs

The Jaw nose escape step by step

Dewoitine /Sud Est SE 580

In 1944, when France been freed , the Aeronautic Manufacturing National Societies or SNCA try to built a new type of fighter based on the project of the SNCA du Midi M 580-an early design of SE 580 in 1940, the SE 580 wing planform-with its near mid-chord single spar and its empennage surfaces planforms-was similar to the D520, albeit the horizontal planes had slightly greater aspect ratio. Initially designed to be powered by the 24-cylinder Hispano Suiza 24Z (H type) of 2,000hp, its postwar redesign accommodated the 24-cylinder arsenal 24 H of 3,400hp. This latter engine used the cylinder blocks of the German Junkers IV12 213 engine.

Two 12.1-foot-diameter coaxial, counter-rotating propellers were to be utilized for propulsion.

It was to be armed with a 30mm cannon firing through the propeller axis, plus four 20mm cannon and either eight 7.Smm or six 12.7mm machine guns mounted in the wings outboard of the propeller arc. A 500kg (1,100 lb.) bomb could be carried beneath the fuselage. It is obvious that the after-cockpit buried radiator with top-mounted radiator intake was for protection from ground fire.

One thing was sure is 2 prototypes were ordered but they were not complete because the project was cancelled when the Amee de Air( French airforce) focus more on jet fighters along with it competitor-the Arsenal VB-10 shortly thereafter.

Specification

Powerplants:Hispano Suiza 24Z(2x Hispano Suiza 12Z)
Armaments:30mm cannon in the props axis, 2x HS 404 cannons in each wing
Propellers:6 blades contra rotating props or 5 blades counter rotating prop
Span 15.862m
Length 13.000m
Weight 5093kg
Maximum speed 749km/h

References: http://www.aviationbanter.com/showthread.php?t=76826 http://findarticles.com/p/articles/mi_qa3897/is_200102/ai_n8931139/

Monday, June 14, 2010

Supermarine type 327 Spito

The Supermarine type 327 is a proposed twin engineed version of the successful Spitfire which was entered production later. A mock up were built for testing but later it was destroyed in fire when it was in factory.In fact it was to a design spec requested by the Air Ministry to actually replace the Spitfire which was entering service.
The 327 was an improvement version of type 324 with 6 cannons in wing root for replace 12 MG in type 324 wings.
Artwork for type 327 Spito