A20 HAVOC DB7 USAAF PILOTS MANUAL

[RODBUSTR]

    STATES UNDER NO CIRCUMSTANCES SHOULD A PILOT EXCEDE BANKING  OF MORE THAN 40%. TH WINGS WILL BREEAK OFF.......

[bustr]

Did it give a fuel load and weight under which this applied?

In the game the A20 is very often flown with 25% fuel and no bombs to furball. With 50-75% fuel I've ripped the wings off pulling high G turns. One thing HTC is good about mostly, when creating a ride. RTFM

But, Hitech still has not gotten rid of the flaperons on the I16 Type24\28 and extended the split flaps out to the aileron roots. No Type model of I16 ever had the flaperon and split flap together. In the game, dropping that flap kludge in flight will precipitate an instantaneous lack of control. 

The flaperons killed pilots forcing the introduction of split flaps with the Type 10. Even those killed pilots during testing because they were pneumatically extended instantly like an air brake. The solution was a hand crank which took a long time of cranking to lower or raise the split flaps.

[lyric1]

    STATES UNDER NO CIRCUMSTANCES SHOULD A PILOT EXCEDE BANKING  OF MORE THAN 40%. TH WINGS WILL BREEAK OFF.......

You have to remember that the A-20g & the Boston are old AHI flight models. Most likely when they get updated the may be a little different.

[bozon]

Does the A20 manual say anything about external views?

[SilverZ06]

    STATES UNDER NO CIRCUMSTANCES SHOULD A PILOT EXCEDE BANKING  OF MORE THAN 40%. TH WINGS WILL BREEAK OFF.......

Cobia got you too huh? 

[Traveler]

    STATES UNDER NO CIRCUMSTANCES SHOULD A PILOT EXCEDE BANKING  OF MORE THAN 40%. TH WINGS WILL BREEAK OFF.......

One statement, taken out of context tells us nothing, can you post a link, is the manual available online?   What was the bomb load, fuel load ?    IS that the actual statement?  Any additional information might help this discussion.

[kvuo75]

wtf is a 40% bank anyway?


40% of 180 degrees?


nice manual.

[FLS]

    STATES UNDER NO CIRCUMSTANCES SHOULD A PILOT EXCEDE BANKING  OF MORE THAN 40%. TH WINGS WILL BREEAK OFF.......

You'll have to scan the page or link the manual if it's a pdf. I've never seen any manual that says "the wings will break".
Even a 45 degree bank angle is only a 1.4 increase in load factor in a level turn.

[TopGear]

http://www.zenoswarbirdvideos.com/A-20.html
Training video has some info at about 11:50 in about turns. Says not more than 75 degree bank.  It seemed to me they stress about being gentle on the wings though. It's a really cool video either way.     Cleopatra   

[GhostCDB]

 

When an A20 starts turning I start pulling vertical, turn all you want.

[FLS]

http://www.zenoswarbirdvideos.com/A-20.html
Training video has some info at about 11:50 in about turns. Says not more than 75 degree bank.  It seemed to me they stress about being gentle on the wings though. It's a really cool video either way.     Cleopatra   

A 75 degree bank is about a 3.9 load factor in a level turn, if my math is correct, so the film is implying a 4g maneuvering limit which would still be below the point of failure.

[Traveler]

wtf is a 40% bank anyway?


40% of 180 degrees?


nice manual.

they are talking about bank angle:



take off, climb to 1000 feet.  Look out the windshield at the Horizon, your flying straight and level , that's 0 degrees of bank.   
Now roll right or left and as you roll, the bank angle changes from zero to what ever angle the wing cuts through the horizon at as you turn.  A standard rate turn would be a turn at a bank angle that would turn the aircraft 360 in 2 minutes and not increase or decrease the altitude or change airspeed and may be some where between 15 and 25 degrees of bank.


As you increase the bank angle it is necessary to increase back pressure to maintain level flight. that increase in back pressure will increase the G force exerted on the aircraft.    The A20 does not do well with high G loads.   The A20 Havoc is not built for aerobatic flight. 


hope this helps
 

[lyric1]

is the manual available online?   

Yes.



https://www.scribd.com/doc/64829375/A-20-Boston-IV-Pilot-Notes

https://www.scribd.com/doc/103229465/Douglas-a-20-G-amp-J-P-70-a-amp-B-Flight-Op-Inst-Nov-1944-C?secret_password=4x4px705gknvo04aej2

https://www.scribd.com/doc/103229355/Douglas-a-20-a-Flight-Op-Inst-March-1941-Complete?secret_password=11x9io1b97jip3pzj0zp

https://www.scribd.com/doc/103229558/Douglas-a-20-G-Havoc-Erection-amp-Maintenance-InCOMPLETE?secret_password=21tclto4zc7p8c36lh5q

[bustr]

For Waffle.

So if you read the manual linked for the P-70, A-20G and A-20J\Boston IV. All three as standard equipment had the N-3C optical gunsight installed to aim the forward firing guns. That would be the gunsight in the new P-40N. If you redo the A-20 as the Boston aircraft, then it would have installed either the MKII gunsight from the new Hurricains or the old MKIIs for aiming the .303.

The A-20G had an armored glass windscreen insert to protect the pilot during straffing runs. The A-20J\Boston didn't.

[kvuo75]

they are talking about bank angle:



take off, climb to 1000 feet.  Look out the windshield at the Horizon, your flying straight and level , that's 0 degrees of bank.   
Now roll right or left and as you roll, the bank angle changes from zero to what ever angle the wing cuts through the horizon at as you turn.  A standard rate turn would be a turn at a bank angle that would turn the aircraft 360 in 2 minutes and not increase or decrease the altitude or change airspeed and may be some where between 15 and 25 degrees of bank.


As you increase the bank angle it is necessary to increase back pressure to maintain level flight. that increase in back pressure will increase the G force exerted on the aircraft.    The A20 does not do well with high G loads.   The A20 Havoc is not built for aerobatic flight. 


hope this helps

i understand bank angle.. he said 40 percent. wtf is a 40 percent bank? percent of what?








btw a 60 degree banked level turn is 2g. I've never heard of a plane that can't do 2g.