109 e4 performance - Page 2

Crumpp · #11 10-23-2011, 10:16 PM

Quote:

no idea if this site is accurate or not

The story is much deeper than what is presented.

The newest data on the Bf-109E on that site is December 1939.

The Bf-109E is not using C3 fuel or a CSP.

Both were in use during the Battle of Britain.

You can sum the truth up as "Some Spitfires were faster than Some Bf-109's and none of them under all conditions....."

Kwiatek · #12 10-23-2011, 11:08 PM

Is is quite hard question actually how fast 109 E-3/E-4 was at the deck.

Most data claimed for 1.3 Ata power ( 5 minut emergency) - 460-467 km/h

Probably it would be at 1.42/1.45 Ata (1 minut emergency) about 480-500 km/h.

German manual for E-3 claimed 500 km/h at deck.

Spitfire MK1 at 6 lbs reached ab. 460 km/h and at 12 lbs ( 5 minut emergency) reached 505 km/h.

Hurricane MK1 at 6 lbs reached 426 km/h and at 12 lbs reached 460 km/h.

CaptainDoggles · #13 10-24-2011, 12:21 AM

Quote:

Originally Posted by Welshman

so how fast should a E4 go level flight ?

Well, speed depends on altitude, but here's a test conducted by the French in 1939 on a captured Bf 109E-3 that appears to reach approximately 490 km/h at sea level.

Martin77 · #14 10-24-2011, 01:27 AM

Hi all

I think the */B Versions of the BF109s are a little bit slower due to the bomb rack. When i test a flight at 1000m and 1.3 ATA and 2400 rpm i reach 420 km/h. Thats 25 km/h to slow to original documents from 4.7.1940 see here:

http://www.beim-zeugmeister.de/zeugm...ndex.php?id=52

Kurfürst · #15 10-25-2011, 09:55 PM

Official Bf 109E specifications, guaranteed by manufacturer within +/- 5%. All Bf 109E accepted by the Luftwaffe had to fulfill these specifications for acceptions within the above limits.

http://www.kurfurst.org/Performance_...chreibung.html

In short, our Bf 109Es are 40 km/h short of speed at low altitudes. FM bugs so far prevented to verify if they can reach 570 at altitude (did not test with latest patch. No TAS indicator either)

Spitliarperformance site as usual reports only speed at 30-min ratings, not maximum outputs.

#16 10-25-2011, 10:01 PM

Is this chart with Notleistung?

I am a bit confused. I currently thought that 490 should be normal speed without Notleistung. But now I have some doubts.

louisv · #17 10-25-2011, 10:39 PM

Notleistung?

OK... Got it on Wikipedia...Emergency boost.

Robo. · #18 10-25-2011, 11:40 PM

Quote:

Originally Posted by Kurfürst

Official Bf 109E specifications, guaranteed by manufacturer within +/- 5%. All Bf 109E accepted by the Luftwaffe had to fulfill these specifications for acceptions within the above limits.

I am a great 109 fan and I would like to have all the planes in the sim as close as possible to the real thing. Therefore I don't think it would be wise to get data from the manufacturer specs

#19 10-26-2011, 12:04 AM

Lol, Robo. Are you a manufacturer?

Crumpp · #20 10-26-2011, 12:09 AM

Quote:

Therefore I don't think it would be wise to get data from the manufacturer specs

That is the best standard in the aircraft industry.

That is the performance Mtt's guaranteed by contract to the RLM its airplanes would perform. If an airplane did not fall within that +/- 5% then the RLM did not pay for it or accept it as one of the airplanes it purchased from Mtt.

Each airframe was test flown before it was accepted for Luftwaffe service and it had to meet that minimum specification.