If this is your first visit, be sure to check out the FAQ by clicking the link above. You may have to register before you can post: click the register link above to proceed. To start viewing messages, select the forum that you want to visit from the selection below. |
|
|
Thread Tools | Display Modes |
#31
|
|||
|
|||
|
#32
|
|||
|
|||
Robert Ehrlich wrote:
... Maybe you don't need to invoke such complex things like chaos. Things which are not taken in account by JAR-22 and usual procedure for weight and balance, as somebody pointed it, are the moments of inertia around the 3 axis of the glider. Of special importance is the moment of inertia around the pitch axis, a higher inertia around this axis favors flattening the spin. And 2 gliders may have exactly the same weight and same CG postion with different such moments. Correcting myself: what favors flattening the spin is rather the difference of the moments of inertia around the 2 other axis (roll and yaw). Practically what has influence on both (moment around pitch axis or difference between moments around the 2 other axis) is the same thing, i.e. weights in the fuselage far from CG, e.g. tail repair balanced by nose ballast. |
Thread Tools | |
Display Modes | |
|
|
Similar Threads | ||||
Thread | Thread Starter | Forum | Replies | Last Post |
AOPA Stall/Spin Study -- Stowell's Review (8,000 words) | Rich Stowell | Aerobatics | 28 | January 2nd 09 03:26 PM |
Puchaz Spinning thread that might be of interest in light of the recent accident. | Al | Soaring | 134 | February 9th 04 04:44 PM |
Spinning (mis)concepts | Arnold Pieper | Soaring | 106 | February 7th 04 02:02 PM |
Spinning Horizon | Mike Adams | Owning | 8 | December 26th 03 02:35 AM |
AOPA Stall/Spin Study -- Stowell's Review (8,000 words) | Rich Stowell | Piloting | 25 | September 11th 03 01:27 PM |