Performance/Endurance of Bf 109 G-6 during aerial combat - questions for experts!!!

[Kurtl12]

Cool. So the endurence would be about 1 hour +. I guess the radius around the base would be about 200km if you think about to attack the enemy aircraft at all heights. - Kurtl

[Kurfürst]

You can work out the details for just about any combination using the F-4 range table at Beim Zeugmeister - the G-6 had very similiar :

http://www.beim-zeugmeister.de/zeugm...are%20found%3B

It should be pretty simply assume a full tank, as in your example, of 400 liters. Say 3 minutes is spent on maximum power, 1475 PS, that is 480 lit consumption per hour, or 24 liters in 3 minutes. Say another 10 minutes is spent 30 minute rating - 400 liters/h - which is another 67 liter consumed. That is 91 liter in total, leaving 309 liters for other purposes.

The F-4, at the engine power best for range consumed 120 liter/h, and could fly 315 km/h at 1 km altitude while doing so. 309/120 is 2,57 h duration, during which the aircraft can cover 2,57 x 315 = 811 km. So, about 400 km radius in an optimum case, or 300 km radius for a pretty safe bet.

[drgondog]

Originally Posted by Kurfürst

You can work out the details for just about any combination using the F-4 range table at Beim Zeugmeister - the G-6 had very similiar :

http://www.beim-zeugmeister.de/zeugm...are%20found%3B

It should be pretty simply assume a full tank, as in your example, of 400 liters. Say 3 minutes is spent on maximum power, 1475 PS, that is 480 lit consumption per hour, or 24 liters in 3 minutes. Say another 10 minutes is spent 30 minute rating - 400 liters/h - which is another 67 liter consumed. That is 91 liter in total, leaving 309 liters for other purposes.

The F-4, at the engine power best for range consumed 120 liter/h, and could fly 315 km/h at 1 km altitude while doing so. 309/120 is 2,57 h duration, during which the aircraft can cover 2,57 x 315 = 811 km. So, about 400 km radius in an optimum case, or 300 km radius for a pretty safe bet.

Hello Kurfurst - do you happen to have any Bf 109G/K performance tests which include rated Hp at critical altitudes along with the speeds attained?

[Kurfürst]

Originally Posted by drgondog

Hello Kurfurst - do you happen to have any Bf 109G/K performance tests which include rated Hp at critical altitudes along with the speeds attained?

Hi Bill!

You can find the details on my site: http://kurfurst.org/
You can find the relevant engine output (in all cases, static power) here: http://kurfurst.org/#engines

The tests themselves note the power regimes, so its a matter of putting 2 and 2 together.

But a quick recap - I am not sure what G types are you interested in, or is it cruise/max power, SL or rated alt?

Anyway, here it is:

G-2 (605A) - Mtt. calculation/official figures for early type:
max. 537 kph @ SL, 660 kph @ 7000m. 1310/1250 PS (static)*
max cruise. 600 kph @ 6000m, 1090 PS (rammed), 225 gram/PS/h fuel consumption

G-6 (605A) - flight trials:
510 kph @ SL, 625-630 kph @ 6700m. 1310/1250 PS (static)*
530 kph @ SL, 640 kph @ 6700m. 1475/1310 PS (static)
max. cruise. 480 kph @ SL, 585 kph at rated alt (ca 6 km), 1075 / 1080 PS

G-14/U4 (605AM w. MW boost)

568 kph @ SL, 665 kph @ 5000m. 1740/1700 PS (dynamic), datasheet, impossible to make out wheter calculation or test flight
max. cruise. 468 kph @ SL, 590 kph at rated alt (6 km), 1000 / 1080 PS (dynamic)

G-5/AS G-6/AS (605AS) - flight trials at 30 min rating:
507 kph @ SL, 654 kph @ 8300m. 1275/1150 PS (static)*

* at 30 min ratings

G-6/AS (605ASM w. MW boost)
560 kph @ SL, 675 kph @ 7500m. 1800/1500 PS (static), test flight
560 kph @ SL, 690 kph @ 6800m. 1800/1500 PS (static), another test flight
max. cruise. 480 kph @ SL, 610 kph at rated alt (8,4 km), 1030 / 1050 PS

G-14/AS (605ASM w. MW boost)
560 kph @ SL, 680 kph @ 7500m. 1740/1495 PS (dynamic), datasheet, impossible to make out wheter calculation or test flight
max. cruise. 460 kph @ SL, 620 kph at rated alt (8,4 km), 1000 / 1040 PS (dynamic)

G-10/U4 (early 605DM w. MW boost)

560 kph @ SL, 690 kph @ 7500m. 1750/1570 PS (dynamic), datasheet, calculation from August? 1944
max. cruise. 465 kph @ SL, 628 kph at rated alt (8,4 km), 1020 / 1030 PS (dynamic)

K-4 (early 605DM w. MW boost)
580 kph @ SL, 710 kph @ 7500m. 1750/1565 PS (dynamic), datasheet, possibly calculation from August 1944
max. cruise. 477 kph @ SL, 645 kph at rated alt (8,4 km), 1020 / 1030 PS (dynamic)

K-4 (605DB and DC w. MW boost)
DB : 595 kph @ SL, 710 kph @ 7500m. 1850/1600 PS (static), calculation from January 1945
DC : 607 kph @ SL, 710 kph @ 6000m, 710 kph @ 7500m.. 2000/1800/ca. 1600 PS (static), calculation from January 1945

max. cruise. probably the same or a bit better (DB/DC max. cruise power 1100/1140 PS).

Hope this helps.