| Date: |
Take-off: |
Landing: |
Duration |
Pilot: |
Flight Nr.: |
| 19.1.43 |
1121 |
1222 |
1h 1' |
Märschel |
25
|
| 19.1.43 |
1520 |
1533 |
13' |
Märschel |
26
|
| 19.1.43 |
1602 |
1619 |
17' |
Märschel |
27
|
| Condition:
|
| Engine BMW 801 D/85289
|
| Tight engine cowl.
|
| Gills.
|
| Armament: 2 MG 17, MG 2 151
|
| Fixed wheel doors
|
| Oil cooler No. 1603.3 with armored ring mounting after HSK 1115 (slotted flaps).
|
| ETC 501 with intermediate rack under the fuselage.
|
| 1 Ju 87 auxiliary tank rack under each wing corresponding to sketch from 20.11.42 (turtle shell fairing).
|
| 1.) |
Flight characteristics:
|
|
a.) |
With Ju 87 rack and fairing, to drawing from 20.11.42 without tanks
|
|
b.) |
With auxiliary tanks
|
|
|
| 2. |
Level speeds with combat and economical power.
|
| 1a) |
A retest of the
flight characteristics of the fighter-bomber with the shell rack fairing
showed no deterioration compared to the normal machine.
|
|
|
| a.) |
With attached auxiliary tanks the same phenomena as with the fairing in accordance with KBV 22799 were experienced.
The ailerons began to buffet from Va = 236 - 249 mph (380 - 400 km/h)
which manifested itself as a disturbance in the control stick.
Simultaneously, a shift in load about the longitudinal axis towards rolling
right occurred, which increased to such an extent with a further increase in
speed, that it became impossible to keep the aircraft in level flight.
The operational use of the aircraft is ruled
out also with this fairing.
|
|
|
| 2.) |
Level speeds obtained with combat and economical power
(without auxiliary tanks and without bomb) are plotted on the attached
graph. A comparison shows that with this fairing, the same values were
reached as with the small fairing according to KBV 22799, meaning
an improvement of about 25-30 km/h over the prototype item on the Fw
190/669 exists. Speeds with auxiliary tanks were not determined for the reasons mentioned under
1).
|
|
|
Wenzendorf, 21 January 1943
|
|
