Type P.1068.01-78 He P.1068.01-80 He P.1068.01-83 He P.1068.01-84
Engine 4 He S 011 or Jumo 004C 6 He S 011 or Jumo 004C 4 He S 011 4 He S 011
Dimensions Length  20 m, height 2,1 m ,  span 19 m , wing area  60 m2 , fuselage width 1,8 m, wheel track 3,3 m Length  20 m, height 2,1 m ,  span 19 m , wing area  60 m2 , fuselage width 1,8 m, wheel track 3,3 m Length  17 m, height 1,8 m ,  span 17 m , wing area  43 m2 , fuselage width 1,3 m, wheel track 3,0 m Length  17 m, height 1,8 m ,  span 17 m , wing area  45 m2 , fuselage width 1,3 m, wheel track 3,3 m
Weights Empty 12830 kg , loaded  22300 kg, max. take off weight  , fuel 7770 kg, oil 170 kg Empty 14800 kg , loaded  23500 kg,
max. take off weight  , fuel 7770 kg, oil 170 kg 		Empty 10760 kg , loaded  17960 kg,
max. take off weight  , fuel 5500 kg, oil 170 kg 		Empty 11060 kg , loaded  18260 kg,
max. take off weight  , fuel 5500 kg, oil 170 kg
Performance Max.. speed  825 km/h at sea level, 853 km/h at 6000 m, 825 km/h at 10000 m, 795 km/h at 12000 m, cruising speed  , range 850 km at sea level, , 1310 km at 6000 m, 1910 km at 10000 m , endurance  , service ceiling  11100 m , climb 20 m/sec, Max.. speed  930 km/h at sea level, 896 km/h at 6000 m, 850 km/h at 10000 m, 835 km/h at 12000 m, cruising speed  , range 550 km at sea level, , 830 km at 6000 m, 1170 km at 10000 m , endurance  , service ceiling  13200 m , climb 33 m/sec, Max.. speed  910 km/h at sea level, 888 km/h at 6000 m, 850 km/h at 10000 m, 825 km/h at 12000 m, cruising speed  , range 670 km at sea level, , 955 km at 6000 m, 1315 km at 10000 m , endurance  , service ceiling  12700 m , climb 28,5 m/sec, Max.. speed  894 km/h at sea level, 895 km/h at 6000 m, 872 km/h at 10000 m, 842 km/h at 12000 m, cruising speed  , range 630 km at sea level, , 960 km at 6000 m, 1350 km at 10000 m , endurance  , service ceiling  12500 m , climb 28 m/sec,
Armament
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.
          The first design, the P.1068.01-78, featured a mid-wing, slightly swept wing and Fowler flaps were planned to help minimize the landing speed. Four He S 011 jet engines were to be mounted individually along the wing leading edge, but since it was believed that the He S 011 engine would not be ready before mid-1945, the Jumo 004C turbojet could also be fitted. There were three fuel tanks located behind the cockpit that each held 1980 liters (523 gallons) and another fuel tank that held 4850 liters (1281 gallons). A bomb bay was located beneath the forward fuel containers. The main gear retracted to the rear into the fuselage, and the nose wheel retracted to the rear and rotated 90 degrees to fit beneath the pressurized cockpit, where a crew of two was accomodated. No defensive armament was planned at this stage.
The second P.1068.01 design was basically the same as the first design (He P.1068.01-78), except six jet engines were to be mounted on the wing leading edge. These could be either the He S 011 or Jumo 004C turbojets. A remote-controlled rear gun turret was to be fitted in the P.1068.01-80's final design variation. This design had the worst aerodynamic layout of all the P.1068.01 designs, found in subsequent windtunnel testing.
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.
The last of the P.1068.01 designs was also the only one that featured a swept wing. The wing was swept back at 35 degrees, and four He S 011 jet engines were mounted along the fuselage, two in front and below the wings and two behind and above the wings. Although wind tunnel testing showed a marked improvement of flight handling at slower speeds and during landing (due to the engine arrangement), the swept wing version offered only a slight increase in speed over the other straight winged versions.