Date: |
Flight Nr.: |
Take-off: |
Landing: |
Duration |
Pilot: |
29.10. |
13 |
1222 |
1313 |
51' |
Melhorn |
30.10. |
14 |
1551 |
1624 |
33' |
Bartsch |
Condition:
|
Engine BMW 801 D II/25513 unthrottled
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Tight engine cowl.
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Gills.
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Armament: 2 MG 17, two MG 151 without ammunition.
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ETC 501 with intermediate rack.
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Auxiliary tank racks under the wings, streamlined fairing.
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Take-off weight with auxiliary tanks full G = 9,392 lbs (4260 kg.) s = 0.705 m
|
Take-off weight with auxiliary tanks empty G = 8,378 lbs. (3800 kg.) s = 0.715 m
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Program: |
1.) |
Check of the flight characteristics about the longitudinal axis with auxiliary tanks.
|
|
2.) |
Level speeds.
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Results: |
1.) |
The
buffeting of the ailerons during flight with auxiliary tanks, described
in Flight Report No. 1, could be eliminated by fairing the wing racks.
In this respect, flying up to a va = 391 mph (630 km/h) showed no faults, and should not be expected even at higher speeds.
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|
2.) |
The tank rack fairing has brought a gain regarding speed. The following values were obtained at Sea Level (0 m), with combat power:
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|
a) |
With empty auxiliary tanks and un-faired racks: |
vw = 255 mph (410 km/h)
|
|
b) |
With full auxiliary tanks and faired racks: |
vw = 281 mph (452 km/h)
|
|
c) |
With empty auxiliary tanks and faired racks: |
vw = 298 mph (480 km/h)
|
|
The measurement listed under b) is a erroneous measurement.
A reexamination showed an engine malfunction as the reason.
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Wenzendorf, 18 November 1942
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