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raaaid
04-13-2008, 12:51 PM
id like to know how long does wep last on late spit and late 190

Zeus-cat
04-13-2008, 01:31 PM
I have never seen a limit in the game, but I try not to use it for long periods. There should be a limit, but maybe it jsut shows up as an overheated engine.

TinyTim
04-13-2008, 02:23 PM
I think MW50 lasts about 26 minutes (but not sure). I don't know if time depends on throttle or not. Never tested these things myself.

ytareh
04-13-2008, 02:29 PM
Gonna be hard to work this out (try x8 speed?)but I know that in some of the very long P47D late missions our squad flew the WEP/water injection WOULD run out .Id estimate it took at least 30-45 mins ...

Zeus-cat
04-13-2008, 03:54 PM
From Wikipedia

Maximum normal power would be limited by a mechanical stop, for instance a wire across the throttle lever slot, but a more forceful push would break the wire allowing extra power. In normal service, the P-51H Mustang was rated at 1,380 hp, but WEP would deliver up to 2,218 hp.[3] The Vought F4U Corsair, not originally equipped for WEP, later boasted a power increase of up to 410 hp (17%) when WEP was engaged.[2] Several methods were used to boost engine power by manufacturers, including water injection and methanol-water injection. Some earlier engines simply allowed the throttle to open wider than normal, allowing more air to flow through the intake. All WEP methods result in greater-than-usual stresses on the engine, and correspond to a reduced engine lifetime. For some airplanes, such as the P-51, use of WEP required the plane to be grounded after landing and the engine torn down and inspected for damage before returning to the air.

The German MW50 system required additional piping, as well as a storage tank, increasing the aircraft's overall weight.[4] Like other boost techniques, MW50 was restricted by capacity and engine temperatures and could only be used for a limited time. The GM 1 nitrous oxide injection system, also used by the Luftwaffe, provided extreme power benefits of 25 to 30 percent but required cooling on the ground and added significant weight.[4]


[edit] Modern times
Perhaps the most dramatic WEP feature was found in the MiG-21bis fighter jet. This late variant of the standard soviet light fighter plane was built as a stopgap measure to counter the newer and more powerful american F-16 and F/A-18 fighters until the next-generation MiG-29 could be introduced to service.

The MiG-21bis received the upgraded Tumanski R-25 engine, which retained the standard 42 / 65kN normal and forsazh power settings of earlier R-13 powerplants, but added a new super-afterburning system. Use of this "diamond regime" provided a massive 97,4kN of thrust for no more than 3 minutes in actual wartime use. Use of this temporary power gave the MiG-21bis slightly better than 1:1 thrust-to-weight ratio and a climbing rate of 254 meters/second, equalling the F-16's nominal capabilities in close-quarters dogfight.

In air combat practice with the MiG-21bis, use of WEP thrust was limited to 1 minute, to spare on the engines' 800 flight hours lifetime, since every second of super-afterburner use counted as several minutes of regular power run due to extreme thermal stress. When WEP was on, the MiG-21bis's R-25 engine produced a huge 5 meter long blowtorch exhaust - there were six or seven brightly glowing romboids visible inside the flames, caused by shockwave interference patterns, thus giving its name to the "diamond regime".

DKoor
04-13-2008, 04:43 PM
TinyTim hits the spot for MW50... and after that you must disengage it (after the fluid is gone) otherwise engine will get damaged.

About Spitfire WEP - it's not limited.
Same as Erhohte Notleistung.

IIRC.

steiner562
04-13-2008, 05:46 PM
Originally posted by ytareh:
Gonna be hard to work this out (try x8 speed?)but I know that in some of the very long P47D late missions our squad flew the WEP/water injection WOULD run out .Id estimate it took at least 30-45 mins ...
I have run out of Wep in the p-47 on many ocassions at about the 30-40 min mark,might be more/less,I;m saying with it not engaged at full all the time.

vanir
04-13-2008, 06:21 PM
For the ASM and AM motors (G-6/AS and G-14 models) it is a maximum of two minutes before a ten minute cool down.
For the 601D variants (or ASB/ASC) in the G-10 and K-4 it is five minutes before a ten minute cool down.
I've read you have 20 minutes supply in the Messerschmitt MW-50 tank. At the same time the kit weighs 136kg so that should mean over 100 litres like the Fw tank, which would be a forty minute supply in common with the 190.

From the Fw-190A-8 airframe (BMW801D-2 and later engines) it is ten minutes before cool down. I don't know the total supply in the erhönte notleseitung or MW-50 fuselage tank, but it is probably the same as the D-9.
The D-9 has a forty minute tank with the same ten minute restriction.

The Spitfire WEP opens higher manifold pressure mechanically. It should not be used for extended periods, but doesn't run out of supply. Consider that +9PSI is quite a lot for an engine, so get to +15 and +18 and your ground mechanics aren't going to like you very much.

There's another major trick in general with WEP settings and also prop pitch.
Keeping your engine cool during combat is paramount. As noted speed is life, and altitude is speed, well engine power is altitude. Keep your engine rpm and manifold pressure down as much as possible (most especially in any Focke Wulf), and save it for when you need it. The colder you motor is when you hit the WEP in combat, the quicker you'll climb away for the next manoeuvre, or the longer you can sustain a manoeuvre.
But you've got to keep getting high fast, and keep chopping your management settings and opening radiators to cool the engine, for the next pass. Use your wingmen as a tag team in the 190.

The Spit VIII/IX has oil heating to worry about so forget the water temperature and watch the oil temperature. Keep it down as much as possible which means again, use cruise when you can and engage WEP or even fast settings purposefully and conservatively.

In racing, for every ten degrees you can lower intake temperatures, you get something like 5% horsepower increase. Forced induction of course heats the intake tremendously (a good indicator of intake temperature is your oil temp gauge in lieu of a manifold temp one), so keeping your engine cool is the key to combat power.

Stiletto-
04-13-2008, 09:17 PM
water temperature and watch the oil temperature. Keep it down as much as possible which means again, use cruise when you can and engage WEP or even fast settings purposefully and conservatively.

In racing, for every ten degrees you can lower intake temperatures,


This isn't modelled in the game is it? If you have a colder engine and run WEP in the 190 you have more available performance than if it was close to the overheat range to start with it?

Also, I am aware that the MW50 runs out, but I beleive it keeps on saying that you are using MW50 in bright orange letters even after it runs out.. My question is, how do you know when its empty? Is there a gauge?

Xiolablu3
04-14-2008, 02:00 AM
erhote noisltstung or whatever in the FW190A burns fuel at an extra-fast rate, so if you have a fuel leak that will not seal, and are trying to get back to base, NEVER use it.

IIRC is squirts extra fuel into the engine to get its boost.

DKoor
04-14-2008, 04:02 AM
Originally posted by Xiolablu3:
erhote noisltstung or whatever in the FW190A burns fuel at an extra-fast rate, so if you have a fuel leak that will not seal, and are trying to get back to base, NEVER use it.

IIRC is squirts extra fuel into the engine to get its boost. http://forums.ubi.com/groupee_common/emoticons/icon_cool.gif

TgD Thunderbolt56
04-14-2008, 06:30 AM
Mine never runs out as I rarely use it. http://forums.ubi.com/groupee_common/emoticons/icon_biggrin.gif

neural_dream
04-15-2008, 05:15 PM
Originally posted by TinyTim:
I think MW50 lasts about 26 minutes (but not sure). I don't know if time depends on throttle or not. Never tested these things myself.
It's written in my guide, which I won't bother googling. If I remember correctly, it's 23 mins.

na85
04-15-2008, 08:48 PM
From wikipedia (yes I know it's not always reliable):



Aircraft generally carried enough MW 50 for about 10 minutes of use, allowing them to increase their climb rate for interception missions

http://en.wikipedia.org/wiki/MW_50