true FW190 rollrate

[niklas]

Hello

I just posted that pic at butch2k forum so i thought myself i could interest also people reading here.

Many of you know the rollrate curve for a 190 reaching 160°/sec, with 50lb stickforce at 250mph. The original RAF report mentions that this particular 190 had significantly heavier ailerons than other 190. Nevertheless the curve was published, and the naca report doesn´t even mention anymore that this 190 wasnt representative for the 190 series.

In reality rollrate was limited by wing twist, like for many other designs. Many pilots spoke about very light ailerons at high speeds for a 190, this alone should be a hint that something was wrong when a 190 reaches 50lb stickforce already at 250mph.

The tabel shows also some info about the influence of prop torque and propwash effects. Unfortunatly no hint is given how a static trim tab can compensate for the necessary input (deflection over speedrange would be very interesting)



niklas

[RRAM]

HOLY COW!!!!!!!!!!!!!!!!!!!!!!!

thanks niklas, impressive information!!!!!!!!!!!!

[MANDOBLE]

Are we talking about ONE HUNDRED AND TEN DEGREES PER SECOND MEASURED AT 400 MPH ???????

If that graph is ok then we have an enormous FM issue.

[RRAM]

honestly, between this thing, and the FW190A5 speed issue I brought up (again) in the other chart...

We should see a WHOLE NEW Fw190 in 1.10!!!!!!!


Pyro, HT, SOMEONE....please,please say SOMETHING!

[minus]

twist the sputnik wings     also la 7 woden miracle not twist at all

if is it warp roll isue then tune down equal % other plane roll

but twist them plzz:D

[J_A_B]

Eh...the way I read that chart, is the upper graph is the rollrate the 190 would have if the wings weren't governed by the laws of physics (in other words its potential roll rate), and the bottom curve is what the plane could actually do.

J_A_B

[MANDOBLE]

Originally posted by J_A_B
and the bottom curve is what the plane could actually do.

And that is 110 degrees per sec at 400 mph ...

[RRAM]

Originally posted by MANDOBLE


And that is 110 degrees per sec at 400 mph ...

no, no no mandoble you are wrong from the start. I didnt notice you had posted before.
 

the numbers on the left are DEGREES PER SECOND.......PER DEGREE OF DEFLECTION OF AILERONS


fW190A8 had 18 degrees of maximum aileron deflection

at 400 IAS you got ELEVEN degrees per second of roll rate PER DEGREE OF AILERON DEFLECTION

18 degrees of deflection*11 degrees per second=198 degrees/second of rollrate

AT FOUR HUNDRED MILES PER HOUR IAS!!!!!!!!!!!!!!!!


this is a RADICAL Departure from the FM we have now, not just a little problem

[MANDOBLE]

YOU ARE RIGHT!!! If the chart is correct, this is even more scandalous now

[Furious]

Right JAB,

...but he's not reading the top graph.  

What the chart does not show is the degree of aileron input possible with 50lbs input at the various speed.

Where did the 18 degrees of deflection come from?


F.

[Heinkel]

I wonder why no Allied fans have come yet and said "That chart is fake" or "That chart is incorrect".....They seem to pretty silent now...


Anyway, good chart! Hope we get the AH Focke Wulf fixed.

[funkedup]

1.  Where does it say anything about stick forces?
2.  Where does it say or imply that full aileron deflection could be achieved at all speeds?

[Heinkel]

I knew that was comming....

[funkedup]

I knew that was comming....

Yep, when people start making conclusions that aren't supported by the data, somebody will usually speak up on this board.  

[Greese]

That chart could have come from anywhere.  If I were HT (and I most certainly am not) the first thing I would want to know is how credible is the source of the information.  Just posting a chart with some numbers is not enough information in my opinion.  

Where did this information come from?  Can I look it up myself, or do I have to use this embedded picture?  As it is, this is hardly enough information to justify changing the AH flight model.  In fact, I would go on to say, that if all it takes to change an AH flight model is a post like this, then I would lose trust in AH and the HTC staff and probably not play anymore.  

I'm not against LW planes, but I would definetely be against this info alone being used to justify a change in the AH flight models, and you'd be silly to think that it's ok if it did.

(could that be considered an Allied rant?)