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Author Topic: Bf 109F-4 performance research page  (Read 4089 times)

Offline Wotan

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Bf 109F-4 performance research page
« on: February 08, 2005, 09:40:02 AM »
bf 109F-4 Performance Analysis

Data collected and presented by  Michael "ireg" Rausch.

660-670 kmh @ 1.42 ata / 2700 rpm ...?
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Offline Wotan

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Bf 109F-4 performance research page
« Reply #1 on: February 08, 2005, 09:47:53 AM »
Quote
AH 2 Bf 109F-4 100% fuel 1 x 20mm / MG 151 200 rpg, fuel mod set to lowest value.

SL

Military Power – SL 38.9 MP @ 2500 RPM = 310 MPH
Emergency Power – SL 42.2 MP @ 2700 RPM = 332 MPH

5k

Military Power – 5000 FT 38.9 MP @ 2500 RPM = 328 MPH
Emergency Power – 5000FT 42.2 MP @ 2700 RPM = 350 MPH

10k

Military Power – 10000 FT 38.9 MP @ 2500 RPM = 347 MPH
Emergency Power – 10000 FT 42.2 MP @ 2700 RPM = 365 MPH

15k

Military Power – 15000 FT 38.9 MP @ 2500 RPM = 364 MPH
Emergency Power – 15000 FT 42.2 MP @ 2700 RPM = 381 MPH

20k

Military Power – 20000 FT 38.9 MP @ 2500 RPM = 382 MPH
Emergency Power – 20000 FT 42.2 MP @ 2700 RPM = 394 MPH

22.5k

Military Power – 22500 FT 38.9 MP @ 2500 RPM = 383 MPH
Emergency Power – 22500 FT 42.2 MP @ 2700 RPM = 387 MPH
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Offline GRUNHERZ

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Bf 109F-4 performance research page
« Reply #2 on: February 08, 2005, 10:01:45 AM »
At what altitude is the 109F4 getting this 416mph top speed?
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Offline Wotan

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« Reply #3 on: February 08, 2005, 10:15:31 AM »
6200m (20341 ft)
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Offline Wotan

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« Reply #4 on: February 08, 2005, 10:21:11 AM »
FYI

The 670 kph top speed for the Bf 109 F-4 was confirmed by the flight trials (not calculation) done by JG 26 using standard combat planes with full combat loadout.

Just get that out of the way before folks suggest specially treated aircraft or that the data is from calculations...
« Last Edit: February 08, 2005, 10:23:38 AM by Wotan »
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Offline hogenbor

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Bf 109F-4 performance research page
« Reply #5 on: February 08, 2005, 10:39:37 AM »
What are the commonly 'accepted' top speed figures for a 109F?
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Offline eddiek

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« Reply #6 on: February 08, 2005, 10:59:36 AM »
Luftwaffe got one set of performance figures, Messerschmitt got another.  Which one should we use?
IIRC, HTC tends to use manufacturers' data to model aircraft.
The link provided some interesting reading, thanks for the link, Wotan.
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Offline Kurfürst

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Bf 109F-4 performance research page
« Reply #7 on: February 08, 2005, 11:07:38 AM »
Mtts dataset is for 1,3ata, the Rechlin figures of 670 kph are with full power 1,42ata authorized in February 1942 the latest. Hence the difference. It may be the Rechlin figures are not corrected for compressibilty (which would chop down to about ca655kph), but thats purely a guess.. Given the similiar power of the 605A and the performance of the 109G at 1,3ata (649kph) to the F-4 at 1,42ata, the results seem to be in good agreement.
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The Messerschmitt Bf 109 Performance Resource Site
http://www.kurfurst.org

Offline Wotan

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Bf 109F-4 performance research page
« Reply #8 on: February 08, 2005, 11:43:40 AM »
Quote
Originally posted by eddiek
Luftwaffe got one set of performance figures, Messerschmitt got another.  Which one should we use?
IIRC, HTC tends to use manufacturers' data to model aircraft.
The link provided some interesting reading, thanks for the link, Wotan.


I believe that HTC uses the American F4 'evaluation' which is just a summary of the British test.

It can be found here:

http://mitglied.lycos.de/luftwaffe1/aircraft/lw/109f_evaluation.pdf

The data in original link I provided (thanks to ireg) is from flight trials done by JG 26 using standard combat planes with full combat loadout.

As Kurfürst points out the Mtt data is for 1.3 ata. The 670 Kmh is derived from 1.42 ata.
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Offline MiloMorai

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« Reply #9 on: February 08, 2005, 11:57:29 AM »
The Americans had 2 F-4s sent to them by the Russians. These were a/c of 9./JG 3 which landed at a Russian airfield. One was given the number EB-1 and the other EB-100. EB-100 had 13 hrs of flight time by the Americans.
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Offline Magoo

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« Reply #10 on: February 08, 2005, 12:04:13 PM »
For what it's worth...

In Air Warrior it was a little known fact that the 109F-4 at 20K was very fast, just short of a Pony at the same alt. Not what you'd expect.

Magoo
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Offline Flyboy

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« Reply #11 on: February 08, 2005, 01:54:48 PM »
how does that compare to the AH 109f?
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Offline HoHun

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Re: Bf 109F-4 performance research page
« Reply #12 on: February 08, 2005, 01:56:49 PM »
Hi Wotan,

>660-670 kmh @ 1.42 ata / 2700 rpm ...?

Here's my analysis of Ireg's data:

http://hometown.aol.de/HoHunKhan/Me109FTopSpeed.gif

(Note that I restricted my analysis to the standard power settings.)

Regards,

Henning (HoHun)
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Offline Wotan

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« Reply #13 on: February 08, 2005, 02:07:11 PM »
Quote
Note that I restricted my analysis to the standard power settings


He amended or actually added a new page 8 showing the what he believes was the official clearance of the emergence power (1.42 ata) for the DB 601 E.

http://www.beim-zeugmeister.de/zeugmeister/index.php?id=38&L=1
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Offline HoHun

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Bf 109F-4 performance research page
« Reply #14 on: February 08, 2005, 02:22:04 PM »
Hi Magoo,

>In Air Warrior it was a little known fact that the 109F-4 at 20K was very fast, just short of a Pony at the same alt. Not what you'd expect.

Type - AW speed at 20000 ft - RL speed at 20000 ft
P-51D - 678 km/h - 655 km/h (Mustang III, V-1650-7, +15 lbs/sqin), 677 km/h (same, extrapolated to +18 lbs/sqin)
Me 109F - 654 km/h - 660 km/h (at 20340 ft, flight trials)
Spitfire IX - 650 km/h - 611 km/h (Merlin 61), 642 km/h (Merlin 66)

So you could make the point that Air Warrior wasn't that far off after all ;-)

Regards,

Henning (HoHun)
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