PROOF DEPARTMENT
ARMY AIR FORCES PROVING GROUND COMMAND
EGLIN FIELD, FLORIDA
SUPPLEMENTARY REPORT
ON
TACTICAL SUITABILITY OF THE P38G TYPE AIRPLANE
AS COMPARED TO THE P38F
3 May 1943
1. OBJECT:
To determine the comparitive difference between the P38F and the P38G airplanes.
2. INTRODUCTION:
This is a supplementary test initiated by the Chief of the Proof Department.
It is a supplement to S. T. No. 4423, dated 6 March 1943, this headquarters, entitled "Final Report on Tactical Suitability of the P38F Type Aircraft."
3. Conclusions: It is concluded that:
a. All conclusions and recommendations applying to the P38F, apply to the P38G.
b. Inasmuch as the general maneuverability of this aircraft is probably the lowest of any type of current fighter aircraft, and in view of the competition facing the P38G in the European Theatre, all possible effort should be made to improve its rate of climb and high speed.
c. The P38G turns much better than the P38F (will close 180° in 360° circle) due to maneuver flaps.
d. Buffeting was noticeable but at higher speeds and accelerations than in the P38F.
e. The P38G will outzoom the P38F.
f. The P38G will hold its altitude in turns at thirtyfivethousand (35,000) feet, whereas the P38F loses altitude.
g. The P38G holds its advantages over the P38F at all altitudes.
h. The lack of sufficient intercooling holds down the performance of the P38G as well as the P38F.
4. RECOMMENDATIONS: It is recommended that:
The same recommendations applying to the P38F, apply to the P38G.
5. RECORD OF TEST:
This test was conducted in accordance with the procedure set forth in "Program for testing the Tactical Suitability of Service Aircraft," this headquarters, dated 9 July 1942, a copy of which is attached as Inclosure No. 1.
6. DISCUSSION:
a. Performance.
