P40 Emergency Landing Tutorial

[Monostripezebra]

https://www.youtube.com/watch?v=_WBrCqTijJU&feature=youtu.be

[Trooper117]

What?... I thought this was a pukka tutorial on how to land a damaged P-40!

As much as you enjoyed having a lark and crashing into things... I think this should be moved to another thread.

Sorry for being a killjoy mate... but you could put this elsewhere?

[Monostripezebra]

yes. the video does contain a bit of humour.. but if it consoles you, the main reasonings given there are very valid. As they may be obscured by the humor here is a sum up:

 

 

1) a good landing is the result of a good aproach.. Don´t sail straight in with unknow surface conditions, always fly a pattern. when under pressure, one may skip the base leg, but never skip the crosswind. (actual outlanding advice from my first gliding instructor, and a very very good one)

2) Fly the aircraft as much through the crash as possible (to paraphrase Bob Hoover)

3) on an active duty airfield in a war zone, consider it´s resumed functionality may rank above the repairability of your plane...

4) don´t fall for the old "oh hey, a road looks just like a runway" feeling, roadsides are litteraly littered with obstacles and poles and usually are the worst option for survival, pick a suitable field. The exception is the undercarriage state of the aircraft, if the gear is stuck out or the plane type is such, that a survivable crash in rough ground is unlikely, then roads become an option, albeit a dicey one. Though this is seldom the case in a flightsim, but more so with real roads.

Edited January 11, 2016 by Dr_Zeebra

[Monostripezebra]

for the helpful side, a bit of historical advice: How to fly the P40

 

[Monostripezebra]

Heureka! I think I´ve just made a discovery... guys: try setting the "joystick noise filter" to high values and then try the p40 again... The wobble (which leads to speed loss and the related problems letting you percieve the P40 as "energyless and too slow") around the Z-axis gets significantly reduced. If you now fly it with rudders (watch the libelula and keep the water radiator closed as much as possible (warning light right top cockpit, plus dial) you get a difference like night and day out of said plane. Anyone else having this effect?

[TP_Jacko]

I thought if you set the noise filter to high it severely restricts the range of movement of the stick. Thats what it looks like in the controls settings pointer display thingy. How is the response to elevator and aileron.

[Monostripezebra]

I´m not yet having a complete theory on what the filter does, but the function it aplies to input signals apparently also has some oscillation dampening. I´m thinking of empirically getting filter values for each plane and then changing it with the plane...  I´m currently using a value of 0.09 (that´s what I ment with "high" values, sorry, that could probably be misunderstood) and a lot of the two-axis phugoid oscillation that comes from the elevator/aileron twichyness (elevator backswing&adverse yaw backswing) seems to be gone and with that the P40 flies faster, as the difference between movment vector and nose pointing vector (for lack of better words) eats up energy, as well as correctional control surface deflections.

 

On the negative side, a certain spin type, (wandering off nose-yaw in a dive) seem to be less easy to avoid/emidiate-response exit

[Dakpilot]

Personally I have found that noise filter 0.4- 0.5 helps with all aircraft, I will give a try with higher settings..Thanks

 

generally I have always felt (notwithstanding genuine bugs) control issues in BoS are in between the hand and the actual FM, not pure game engine FM problems..

 

but what do I know 

 

Cheers Dakpilot

[-NW-ChiefRedCloud]

Dr, you still got it .... thanks for the tutorial and the ah, humour too ......

 

Chief

[TP_Jacko]

Wooah, just looked at the video entertaing but since when does an aircraft fly with half a wing missing. Have to question the FM surely.

[LukeFF]

 

 

Wooah, just looked at the video entertaining but since when does an aircraft fly with half a wing missing.

 

Often enough:

 

http://www.usatoday.com/story/news/2015/02/20/f16-jets-collision-wing-sheared-landing/23758769/

http://theaviationist.com/2014/09/15/f-15-lands-with-one-wing/

 

[Monostripezebra]

When trying to fly a "clipped" wing P40 in BoS my procedure so far is:

 

-push stick to nose down afer wing loss

-try to avoid all "nose wandering off" tendencies with ruder

-deploy full flaps

 

after full flaps are out, you can just recover and fly on...

[Monostripezebra]

the above also works with the DCS Mustang.. so I kind of have to think it through wether flaps are a general helpful item at wingloss.. so far, I´d never really thought that through..

 

 

https://www.youtube.com/watch?v=QiR-UOxWU-Q

[unreasonable]

Thought experiment:

 

Assuming the flaps are working on both sides, and that each flap adds equal lift, the percentage difference in lift between "clipped" and unclipped wing must be less with flaps down. (Or the ratio, if you prefer).

 

Same applies for drag on each side - so I would have thought that the control compensation needed to overcome asymmetrical lift and drag would be less with flaps down.

 

I am sure that the assumptions are not exactly right given the damage....what do the pilots say?

 

BTW nice video, BoS needs a bit of humour occasionally.

Edited January 19, 2016 by unreasonable

[Monostripezebra]

Yep, that was my thought there as well.. But I wonder if other sides like induced drag or so also play a role.. I still gotta think a bit about it.

[-TBC-AeroAce]

A plane with say a bit of left wing missing is the same as a plane flying with left roll applied. The limiting factor of keeping a plane with wing missing flying is the amount of wing/lift missing vs how much alieron force is available on the other side to keep it in balance

Edited January 19, 2016 by [TBC]AeroACE

[Monostripezebra]

A plane with say a bit of left wing missing is the same as a plane flying with left roll applied. The limiting factor of keeping a plane with wing missing flying is the amount of wing/lift missing vs how much alieron force is available on the other side to keep it in balance

 

Well that alone, without some "percentual change of total lift"-Explanation as above would not explain the increased controlability with flaps deployed.. since neither the aileron nor the missing do change their size.