In 1942, the RLM contacted Junkers to design a four-engined jet bomber, which became the Ju 287. Meanwhile, Heinkel also did some design work on this specification. In June 1943, the RLM issued a different specification for a two seat bomber with a bombload of 2000 kg (4409 lbs) and a speed of  800 km/h (497 mph) over a range of 2500 km (1554 miles). Siegfried Günter of the Junkers Design Bureau in Vienna designed at least four versions of the P.1068 by the end of 1943. Some of this design work was later used for the Heinkel He 343.
          On the third design, the P.1068.01-83, the wings and fuselage were reduced in size in order to increase the speed but keeping the same payload. Of course, the smaller fuselage meant a reduced fuel supply, and so the range was less than the first design's (He P.1068.01-78). Four He S 011 turbojets located on the leading edge of the wing were to provide the power. Remote controlled, rear firing armament was included with this design also. However, the aircraft was lighter by four metric tons, which was of a benefit given Germany's scarcity of raw materials at this stage in the war.
 

Heinkel He P.1068.01-83 Dimensions

Span	Length	Height	Wing Area	Fuselage Width	Wheel Track
17 m  55' 9"	17 m  55' 9"	1.8 m  5' 11"	43 m²  462.85 ft²	1.3 m  4' 3"	3 m  9' 10"

 

Heinkel He P.1068.01-83 Weights

Empty Weight	Fuel	Lubricants	Crew	Load	Max. Load	Takeoff Weight	Wing Loading
10760 kg  23721 lbs	5500 kg  17130 lbs	170 kg  375 lbs	200 kg  441 lbs	1500 kg  3307 lbs	7200 kg  15873 lbs	17960 kg  39595 lbs	417.7 kg/m²  85.55 lbs/ft²

 

Heinkel He P.1068.01-83 Performance

Max. Speed	Rate of Climb	Service Ceiling	Range	Takeoff Run	Landing Speed
910 km/h @ sea level  565 mph @ sea level  -------------------------  888 km/h @ 6000 m  552 mph @ 19685'  -------------------------  850 km/h @ 10000 m  528 mph @ 32808'  -------------------------  825 km/h @ 12000 m  513 mph @ 39370'	28.5 m/sec  94 ft/sec	12700 m  41666'	670 km @ sea level  416 miles @ sea level  -------------------------  955 km @ 6000 m  593 miles @ 19685'  -------------------------  1315 km @ 10000 m  817 miles @ 32808'  -------------------------  1610 km @ 12000 m  1000 miles @ 39370'	900 m  2953'	167 km/h  104 mph

 

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    Above image from Geheimprojekte der Luftwaffe Band II: Strategische Bomber 1935-1945