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I have taken elevator pushrod force measurements
and was surprised.
Elevator pushrod forces to stick forces are about
6.5 to 1
The trim system, when dialed in, provides these
forces.
At 190 imph and -7º flaps, there is a 60lb
forward force.
At 80 imph and 10º flaps, there is about zero
force.
At 80 imph and 20º flaps, there is a slight
(-1lb) rearward force.
These numbers are with the horizontal stabilizer
built at -1.2º
- - - plans range is -0.5º to -1.0º
An input from the flap bellcrank of about
20-40 lb at -7º would be good,
tapering down to zero lbs at 10º
flaps
A horizontal stabilizer built at -0.5º would, of
course, change these numbers.
Comments ?
Wolfgang
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