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 

• http://en.wikipedia.org/wiki/Arsenal_VB_10
• http://www.aviastar.org/air/france/arsenal_vb-10.php