Me 109 G Nr. 109 14 L 43

Messerschmitt AG.
Augsburg

Speed influence of 2 MK 108
under the wings of the ME 109 G.

Test Report
Nr. 109 14 L 43
Date 12.8.43
Copy

Dept. Flight Testing
Group Performance

Reason:

In the course of further development on the Me 109 G, flight tests with MK 108 mockups were to be carried out in accordance with instructions from Prof. Messerschmitt.

Test
Procedure:

One test flight each, with and without mockups, was conducted. The values are not converted, since the two short flights took place consecutively and a change of the air state did not take place during the short time dismantling the mockups.

Results:	Speed without mockup	V_w = 326 mph (525 km/h)
	Speed with mockup	V_w = 322 mpg (519 km/h)
	Speed loss due to mockups	ΔV = 4 mph (6 km/h)
	n = 2600 U/min; p – 1,30 ata; B = 717 mm Hg; t = 19°C; H = 480 m.

Aircraft:

Me 109 G Wk.Nr. 15562 Kennz.: CN + WF

Engine:

DB 605 A/1 W.Nr. 37648

Propeller::

3-blade. VDM Adjustable D = 3,0 m
Blattbaumuster 9 – 12159 A
Satz-Nr. 3 buf 75

Condition
of the
Machine:

Standard production version ME 109 G with GM 1-equipment. Surface specially treated, yet somewhat smoother than Test Report 109 11 L42 shows achieved. Radiators closed; radiator indicator staffs; wing thermometer; Chassis; tail wheel out. Mockups for MK 108 from wood. Implementation and mounting see photo. 2 ETC 50 one behind the other beneath under the fuselage.

Process of Measurements:	Two test flights at combat power n = 2600 RPM, p = 1.30 ata at ground level. Air pressure was measured by altitude recorder on board the machine, temperature at ground.
		1. Flight: with MK 108 mockup.
		2. Flight: without MK 108 mockup.

Messerschmitt AG. Flugerprobung. Gruppe: Leistungen Bearbeiter: Reichel

Sea level speed = 316 mph (509 km/h) after corrections.
(Zusammenstellung aller Leistungsmessungen umgerechnet auf Grundausführung, 14.1.44). RAF Mk-108 Test
Visual representation