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IL-2 Sturmovik: Birds of Prey Famous title comes to consoles.

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  #1  
Old 12-29-2009, 06:12 AM
SgtPappy SgtPappy is offline
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Originally Posted by kozzm0 View Post
the fw-190 had hydraulic or electric flaps that could be set at full landing, or at a slight 15-degree takeoff/maneuvering setting. It didn't help much, but it had an effect.

http://www.wwiiaircraftperformance.o...90/eb-104.html

You're right about the spitfire though: no combat flaps on that thing. landing, or nothing. Giving it a combat setting in BOP gives it an unfair advantage. In real life the 109f had a smaller minimum turn radius.
It's both an advantage and a disadvantage for the pilot.
In other sims, one could use the landing flaps on a Spit for a sudden decrease in speed at the top of a rolling scissors for example, allwoing a pilot to quickly flip over, retract the flaps and dive on the opponent. I found this very effective in Aces High.

In the other IL-2 games, the landing flaps retracted/deployed much more slowly than in Aces High, so I'd barely use them. In IL-2 however (and Aces High), one could use the superior low speed rate of climb and acceleration the Spitfire VIII/IX had in order to keep at corner velocity or maintain an energy advantage. In BoP, I find that the Spitfire gains speed no better than any other plane, unless the two planes are flying straight and the Spit has a faster top speed. This is a huge disadvantage for me, and I'm finding it quite difficult to energy fight when I can't even gain energy faster than anyone else.
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Old 12-31-2009, 07:14 AM
SgtPappy SgtPappy is offline
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Bump!

Sorry guys, but I'm wondering if anyone's noticed what I'm noticing:

All the piston engine fighters seem to accelerate at the same rate in a straight line. Don't know, but it feels as such when I play.
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Old 12-31-2009, 07:53 AM
kozzm0 kozzm0 is offline
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Quote:
Originally Posted by SgtPappy View Post
It's both an advantage and a disadvantage for the pilot.
In other sims, one could use the landing flaps on a Spit for a sudden decrease in speed at the top of a rolling scissors for example, allwoing a pilot to quickly flip over, retract the flaps and dive on the opponent. I found this very effective in Aces High.
They made combat-settable flaps for the planes that needed them most, but they didn't really do much good... those planes should mostly stay out of the types of situations combat flaps were designed for.

The 109f got much better results from the, what the hell was it called, the extensions on the front of the wings that increased wing area (to lower loading) when necessary. Clever invention, they don't show them in BOP.
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Old 12-31-2009, 04:12 PM
flynlion flynlion is offline
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Originally Posted by kozzm0 View Post
They made combat-settable flaps for the planes that needed them most, but they didn't really do much good... those planes should mostly stay out of the types of situations combat flaps were designed for.

The 109f got much better results from the, what the hell was it called, the extensions on the front of the wings that increased wing area (to lower loading) when necessary. Clever invention, they don't show them in BOP.
Hi Kozzmo
The leading edge extensions are called "slats", and were designed to allow shorter takeoffs and landings on muddy fields. They were not controlled by the pilot, but were held in the retracted position by airflow and would extend out as airspeed fell below a certain level. Some pilots found this useful in a slow speed turning fight, but many more found that it screwed up their shooting accuracy and flying precision.
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Old 12-31-2009, 05:33 PM
kozzm0 kozzm0 is offline
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Hi Kozzmo
The leading edge extensions are called "slats", and were designed to allow shorter takeoffs and landings on muddy fields. They were not controlled by the pilot, but were held in the retracted position by airflow and would extend out as airspeed fell below a certain level. Some pilots found this useful in a slow speed turning fight, but many more found that it screwed up their shooting accuracy and flying precision.
Yeah, that's the things. In other sims I see them automatically drifting forward when I fly a 109f. They look funny, like part of my wings are falling off.

If the pilots didn't like them, they still gave the 109f a great minimum turn radius without having to put big fat wings on the plane. Lot of Luftwaffe aces liked the 109f
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Old 12-31-2009, 06:41 PM
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Robotic Pope Robotic Pope is offline
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Quote:
Originally Posted by flynlion View Post
Hi Kozzmo
The leading edge extensions are called "slats", and were designed to allow shorter takeoffs and landings on muddy fields. They were not controlled by the pilot, but were held in the retracted position by airflow and would extend out as airspeed fell below a certain level. Some pilots found this useful in a slow speed turning fight, but many more found that it screwed up their shooting accuracy and flying precision.
http://www.wwiiaircraftperformance.o...hurri-turn.pdf

In section 4 the test pilot tried using 10 degrees flap to improve the turn in a Me109, it didn't work. Also he found the slots/slats to be a disadvantage in a tight turn as they would open unevenly at high G's and cause one wing to stall.
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Old 01-01-2010, 10:58 AM
kozzm0 kozzm0 is offline
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Quote:
Originally Posted by Robotic Pope View Post
http://www.wwiiaircraftperformance.o...hurri-turn.pdf

In section 4 the test pilot tried using 10 degrees flap to improve the turn in a Me109, it didn't work. Also he found the slots/slats to be a disadvantage in a tight turn as they would open unevenly at high G's and cause one wing to stall.
"little if any effect" they said. Combat flaps weren't too effective at getting degrees/s at maneuvering speeds. But they are good for reducing the lower bound of maneuvering speed, which reduces minimum radius. Not usually an advantage, but it can be the deciding factor at the end of a fight. If a fight gets to low radius and low speed, it's also at low g's, if they're low enough for the slats to work, then there are situations where low radius can beat higher turn rate. Like low-level flat scissors.

In Targetware I think they help the 109f at strafing runs which is a better use for them. Not so great for combat but maybe for attack.

also that was a British pilot, the Germans probably knew a few tricks for flying them better

About the piston engine planes, I never really noticed but they do all seem to be pretty much the same, except maybe the fast 109's like K, but maybe that's cause of its top speed. I have noticed that when I try to disengage from a hurricane with a faster piston plane, like a yak-3, the hurricane has an unfair way of keeping pace. In fact I've never exceeded 700kph in level flight in a yak 3, they could do it in real life

Last edited by kozzm0; 01-01-2010 at 11:27 AM.
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Old 01-01-2010, 08:12 PM
SgtPappy SgtPappy is offline
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Indeed, the slats on 109 wings were able to make the aircraft turn better according to the Germans, and planes like the La-5 and La-7 have them, but I've never noticed them in-game. The cause for the better turning ability is that the slats (according to the diagram below) seem to cause a Bernoulli effect, pressurizing and speeding up the air over the wing. This delays separation of airflow and maintains lift at higher AoA.




I don't know why others haven't noticed before, but I've mentioned it a couple of times as well, kozzm0. There's a lot of error in speed and acceleration; a major problem in an energy fight. Like you said the Yakovlev should pass 700 km/h in level flight, and my Spitfire IX should easily pass 320 mph @ SL. I can't even pass 305 mph. Our inability to accelerate from slower, lower-powered foes makes it nigh impossible to truly energy fight since energy fighters generally have the ability to gain energy faster than their opponents. Since there is no such advantage in BoP, there is nearly no way to really energy fight. Simply we can only extend, climb and BnZ slower aircraft rather than gaining angles on them using superior speed gained from faster acceleration.

Last edited by SgtPappy; 01-01-2010 at 08:16 PM.
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Old 01-02-2010, 11:13 AM
kozzm0 kozzm0 is offline
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So the slats enable the wing to add lift without increasing drag? Or to increase AOA without increasing drag?

I had thought of them as just being a way to add area to the wing to decrease loading, but the air flowing through the slots has something to do with it too then.
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