Author Topic: Me262 question: Did it have WEP?  (Read 3673 times)

Offline EagleDNY

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Re: Me262 question: Did it have WEP?
« Reply #75 on: May 23, 2011, 10:29:56 PM »
no need to  :bhead, just keep it simple and think about the way AH models the spit IX and its RL restriction.

OK - the manual is here: http://www.zenoswarbirdvideos.com/Images/spit/SPIT9MANUAL.pdf

Combat (5 Min Limit) +18 Boost / 3000 rpm
Max Climb (1 Hr Limit) +12 Boost / 2850 rpm
Max Continuous Power (Unlimited) +7 Boost / 2650 rpm

In AH, WEP (Combat) has the 5 Min Limit, but you do not see the Max Climb (1 Hr Limit) modeled.  Interesting though that IRL the max climb limit in a Spit IX is the same as in a Lanc though, and the manual on Merlin powered Lanc IIIs does show a WEP setting as well as Max Climb Power.

Offline icepac

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Re: Me262 question: Did it have WEP?
« Reply #76 on: May 23, 2011, 11:05:05 PM »
Are you really prepared to actuate cowl flaps, adjust climb speeds, monitor fluid levels in adi tanks, adjust spark advance and supercharger settings, prop speed, and manifold pressure to ensure your engine doesn't blow up the second you move the throttle slider up to full?

In real life, these settings shown for each engine were not arrived at with simply moving the throttle control fore or aft but rather achieved using many different controls.

I'm sure Hitech can model this in game but very few here would be able to keep thier engine alive for more than 5 minutes.
« Last Edit: May 23, 2011, 11:14:12 PM by icepac »

Offline colmbo

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Re: Me262 question: Did it have WEP?
« Reply #77 on: May 24, 2011, 01:36:30 AM »
Are you really prepared to actuate cowl flaps, adjust climb speeds, monitor fluid levels in adi tanks, adjust spark advance and supercharger settings, prop speed, and manifold pressure to ensure your engine doesn't blow up the second you move the throttle slider up to full?

While the knowledge to do what needs to be done takes some learning....doing it is pretty simple.  Cowl flaps you can wait to do, and may not need to be adjusted.  Adjust spark advance?  I've never heard of anything WWII or later where you adjusted the spark advance.  Supercharger probably won't need to be adjusted unless you've made a big altitude change, Prop speed takes care of itself, prop lever goes forward with the throttle.  And FYI, you can push the throttle up without doing anything and it won't just instantly blow up.
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Offline Krusty

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Re: Me262 question: Did it have WEP?
« Reply #78 on: May 24, 2011, 09:38:24 AM »
Interestingly enough, I did some practice offline and was able to get the liftoff not too far after 100 (maybe 125mph range?). It was a bit more nose-high than I think is shown in those videos, but it was possible.

So that part where it took a lot more speed was pilot error in regards to how I took off.

Offline icepac

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Re: Me262 question: Did it have WEP?
« Reply #79 on: May 24, 2011, 01:00:12 PM »
While the knowledge to do what needs to be done takes some learning....doing it is pretty simple.  Cowl flaps you can wait to do, and may not need to be adjusted.  Adjust spark advance?  I've never heard of anything WWII or later where you adjusted the spark advance.  Supercharger probably won't need to be adjusted unless you've made a big altitude change, Prop speed takes care of itself, prop lever goes forward with the throttle.  And FYI, you can push the throttle up without doing anything and it won't just instantly blow up.


My reference was encompassing all possible scenarios concering any plane that might see service in the game.

This includes spark advance controllable WWI planes, planes with manual prop speed control, or a plane that has any changable settings engine management.

Not all engines had automatic compensation of boost so it was up to the pilot to carefully watch manifold pressure levels and rpms and, in the case of the p38, actuate the intercooler flaps depending on conditions.

I was making a point on the complexities concerning making engine management parameters adjustable in game as they often were in real world usage..... though many aero engines of WWII usage featured pilot adjustable spark advance settings all the way up to the 4360 engines.

Manufacturers shipped planes with throttle stops and these were often field adjusted based on fuel quality and pilot demands on being able to get the most out of thier ride and taking on more responsibility concerning engine management.

Many pilots decided that thier lives being on the line was reason enough to have the option of getting the most out of thier respective rides.
« Last Edit: May 24, 2011, 02:35:26 PM by icepac »

Offline MiloMorai

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Re: Me262 question: Did it have WEP?
« Reply #80 on: May 24, 2011, 04:17:59 PM »
While the knowledge to do what needs to be done takes some learning....doing it is pretty simple.  Cowl flaps you can wait to do, and may not need to be adjusted.  Adjust spark advance?  I've never heard of anything WWII or later where you adjusted the spark advance.  Supercharger probably won't need to be adjusted unless you've made a big altitude change, Prop speed takes care of itself, prop lever goes forward with the throttle.  And FYI, you can push the throttle up without doing anything and it won't just instantly blow up.

Paraphrasing Hans Fay from the Smith/Creek 262 book

- trim set to '0' or '1' with 20* flap
- brakes off at 7000rpm
- at ~200m stick back gently to raise nose wheel off the ground

- length of runway for an experience pilot

- take off ~820m > ~1005m & same for landing on concrete

- take off ~1005m > ~1280m & ~640m > ~820m for landing on grass

add 320m for inexperienced pilots

Offline EagleDNY

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Re: Me262 question: Did it have WEP?
« Reply #81 on: May 24, 2011, 06:15:24 PM »
Interestingly enough, I did some practice offline and was able to get the liftoff not too far after 100 (maybe 125mph range?). It was a bit more nose-high than I think is shown in those videos, but it was possible.
So that part where it took a lot more speed was pilot error in regards to how I took off.

The Xtreme racing league ride tonite is the 262 - in practicing for the course, I could definitely notice when hitting the 'unstick' speed as the nose just jumps into the air.  Takeoff was with one notch of flaps only. 

Another thing I noticed that was with the automatic trim off, I had to really crank down on the trim to keep the nose down at all.  If people are taking off with auto trim off and the default trim settings, I can easily see how you get stuck in that severe nose up climb attitude.