Mosquito bugs list

[bozon]

Mossie problems list:

FM issues:
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1. Abrupt and violent departure at high speeds - not a snap rolls but total loss of control. Commonly leading to a flat spin.

2. Stall at slow speeds with nose high leads to a deep stall situations with great difficulty in bringing the nose down to a dive. This may come in flat spin and no spin variants.

3. Yaw instability - flight correction cause a lot of "fish tail" yaw movement.

4. Auto trim - trims a little tail heavy.

Damage model (no statistics to back this up):
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1. High probability of catching fires.

2. Hi rates of pilot wounds, even from small calibers.

Minor cockpit issues:
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1. TAS marker is off by about 5-10 mph compared with E6B.

2. Ammo counters for primary and secondary are in opposite directions.

Requests:
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1. Flame dampners removed.

Thank you.
Bozon

[Souless]

Been doing quite a bit of research about the mossie Bozon.I have asked Dan/Corky to help me out. When I have finished I will release the appropriate findings.
I will elaborate on a few things now

1. It was not prone to catching fire actually it was a very durable airframe.It is modelled in this game as a roman candle which is incorrect.

2.The pilot was very well protected

3.Visually the flame dampeners are on the plane by this I mean they were either long extensions added to the exhaust ports or metal hoods covering the exhaust
http://www.virtualmuseum.ca/pm.php?id=story_line&fl=0&lg=English&ex=00000192&sl=3205&pos=1 see image 11 first page
and also http://www.virtualmuseum.ca/pm.php?id=story_line&lg=English&fl=&ex=00000192&sl=3204&pos=1 image 8 with exhaust dampeners.

What we have is a mosquito modelled with exhaust dampeners (visually) and this performance obstruction has been factored in.In short it is about 18 miles an hour slower than it should be at sea level.(exhaust dampeners removed)

Also the CoG spin(bug)
Most accounts from pilots and from the flight manual of the mosquito was it was very easy to recover from a spin.In AH it certainly is not.
I quote from the flight manual
"(ii) Warning of the approach of the stall is given by pronounced
buffeting of the control surfaces, the onset of
which can be felt some 10 knots before the stall itself. At
the stall the aircraft pitches, the A.S.I, fluctuates and the
nose drops gently. There is little tendency for the wing
to drop unless the control column is held back.
Recovery is easy and normal in all cases.

The biggest discrepency here in Ah is that the aircraft does not pitch nor does the nose drop gently, the wing drops drastically from under you and the tail pitches up inducing a flat spin.

More information to follow as I finalize my results

[Krusty]

Take a look. Ours has flame dampers in-game.

[Souless]

learn to read and stop posting for the sake of posting:D

[NOT]

krusty, maybe you missed it in bozons post, he wants them REMOVED.



NOT

[Souless]

They should be removed. All countries using the mosquito knew had badly they degraded performance.
The only time the exhaust dampeners were left on was for the night fighters.

[Krusty]

Hrm... I thought I remembered him saying they weren't on the plane, and now the post is edited, I can't be sure. I wouldn't have posted unless I thought otherwise.




P.S. rather rude reply, souless. Regardless, I wouldn't mind seeing them removed, either.

[bozon]

Please, leave the debates for the wishlist forum. This is about mosquito bugs.

Nice website Souless. Never saw it before.

[Souless]

was not intended to be rude Krusty my apologies thats why I put the big grin on the end

[SkyGnome]

Originally posted by bozon

3. Yaw instability - flight correction cause a lot of "fish tail" yaw movement.

Possibly silly, but from one of Souless' links:

"The top plan view reveals good flap, aileron and elevator area, but not enough vertical tail for good single engine safety."

This would seem to indicate that the vertical stabilizer was skimped on - possibly owing to the reduced need for a large vertical stab to counter engine forces that was neccessary in single-engined aircraft.

Do you have a reference for the presumption that the real aircraft didn't have more yaw instability than average?

[Krusty]

Why would there be reduced need for it? There should be just as much need, unless the props contra-rotated, which they don't on the mossie.

[Karnak]

I'll post some info on the issues found with the prototype and the fixes made to the design to correct them when I get home.

[Karnak]

Ok, here we are.

From Mosquito by C. Martin Sharp & Michael J. F. Bowyer, page 44:
Before dispatch on 19 February to the Aeroplane and Armament Experimental Establisment, Boscombe Down, for official trials, the yellow prototype had its upper surfaces sprayed dark green and brown; and was reweighed.  It had flown 35 hours and characteristics were summaraized:-

1. Stability (a) Lateral and directional stability sastisfactory.
(b) Unstable at C.Gs. aft of 14 inches behind datum- mods in hand.
2. Controls satisfactory.
3. Slight instrument vibration, cured by cutting three inches off of airscrew radius.
4. Tail dither caused by disturbed flow off trailing edge of nacelles above 240 I.A.S., cured by nacelle extension (precluding use of flaps for the time being).
5. Tail wheel castoring unsatisfactory.
6) Speed tests conducted at 16,000 and 17,000lb., and up to estimate (386m.p.h.).

The Mossie was not originally designed to have split flaps or with the engine nacelles extending past the leading edge of the flaps.  The long nacelles that we see as characterisic of the Mossie were added to cure snaking behavior at higher speeds and the flaps were split to allow for this.

[bozon]

Originally posted by SkyGnome
Do you have a reference for the presumption that the real aircraft didn't have more yaw instability than average?

I remember reading that the tail plane was enlarged at some point. I don't remember at what stage of development this was done. Will have to look it up.

Two engines can compensate for the use of rudder, not for the vertical stabilizer. The stabilizer is intended to damp yaw swing movements. I read a mosquito pilot story who lost his rudder. He said it was no problem to compensate by differential power. I doubt a two engine plane can fly without the entire vertical tail though. It would swing like mad (yes, I know about the B2).