| Condition: |
| Engine Jumo 213 C/1001580035 starting from 28.9 (measured on Jumo Hoeheprufstand) |
| D-9 series condition, normal surface without special treatment. |
| Armament: 2 MG 131, 2 MG 151. |
| Propeller 41276.16 V |
| Operable landing gear doors. |
| Long range fuselage tank. |
| Radiator flap in front of the air intake fixed in flush position. |
| Max. Radiator flap opening angle of 20 °. |
| New Erhard valve with 08/2.0 atü setting. |
| Radiator flap control governor attached at propeller pressure circuit. |
| Rücköl vom VDM – Regler fliesst zum Sauganschluss des Luftschraubenreglers surück |
| Program: |
| 1. | Determination of the Abfallhöhe, full throttle height and level speeds with the performance-tested engine. |
| 2. | Record of the engine temperatures in climb. |
| 3. | Measurement of the weapon heating system. |
| Results: |
| 1. | The airplane could not be tested with engine No. 1001580035, which was measured on the altitude test bed. This engine failed on 1.10 due to leaky cylinder block packing. |
| The boost pressure and level speeds were measured to 19,685 feet (6000 m). It was shown, with the radiatior flap in front of the air intake in flush position,
that the full boost pressure available had not been reached; thus the FTH (Abfallhöhe). Current engines reach a FTH (Abfallhöhe) of 18,372 to 18701 feet (5600./. 5700 m) at the maximum;
the results of Flight Report Nr 2 of 190/V-53 being extraordinarily good. In level flight the airplane reached speeds slightly slower (~3 to 5 mph - 5./. 8 km/h) compared with this airframe and engine Serial Nr. 1021520539.
The gear change height (Umschalthöhe) of 7,874 feet (2400 m) for the test flight was much too low. |
| 2. | The radiator coolant inlet and outlet temperatures, as well as the lubricant and supercharger air temperatures at the engine entrance, were taken using combat power climb with 20° angle radiator flap opening.
Since the last flight had to be broken off because of weather and engine breakdown, the height of peak temperature temperaturumkehrhöhe was just reached at 19,685 feet (6000 m) altitude. |
| Coolant radiator entrancew
Coolant Radiator outlet
Lubricant engine entrance
Supercharger air engine entrance
| tKE = 110°
tKA = 100°
töME = 125°
tLad = 135°
|
| 3. | The tests of the warm air weapon heating could not be finished due to engine damage.
Production exhaust manifolds were not fitted, therefore, for later tests, the few existing results of the VA-ME are consulted for comparison purposes. |
Langenhagen, 20 October 1944
Gt/Schw. |
Level Speed Summary
Combat Power - 3000 rpm, without ETC 504, normal finish, weight = 9,038 lbs. |
| 328 mph at Sea level | 395 mph at 19,685 feet
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