Flap Hinge Moment Calc

Is there a quick way to calculate what the hinge moment (or turning
moment for the flap shaft for a specified condition) is for a flap on a
symetrical foil.

You don't need to calculate it ...

There is a a number of sources of such data that will be far more reliable
than any calculation:
* NACA reports (search NACA TRS online) - there is heaps of such reports
* USAF Stability and Control DATCOM
* Books such as Hoerners Lift, Etkin, Perkins and Hage (I think) will have
limited data.
* ESDU data sheets
There are other sources if you cannot find any of the above ... just ask
again and I will give you more.






"Bo" wrote in message
oups.com...
Is there a quick way to calculate what the hinge moment (or turning
moment for the flap shaft for a specified condition) is for a flap on a
symetrical foil.

There are too many details that can have a big effect on hinge moments that
you simply cannot allow for in calculations, such as the shape of the TE,
degree of gap sealing etc. People who do this for a living rely on
experimental data NOT calculation.


"......... :-))" wrote in message
...
You don't need to calculate it ...

There is a a number of sources of such data that will be far more reliable
than any calculation:
* NACA reports (search NACA TRS online) - there is heaps of such reports
* USAF Stability and Control DATCOM
* Books such as Hoerners Lift, Etkin, Perkins and Hage (I think) will have
limited data.
* ESDU data sheets
There are other sources if you cannot find any of the above ... just ask
again and I will give you more.






"Bo" wrote in message
oups.com...
Is there a quick way to calculate what the hinge moment (or turning
moment for the flap shaft for a specified condition) is for a flap on a
symetrical foil.