TM 9-1550-416-14&P
(2) Align the elevator to center by operating the
c. The best way to operate the FQM-117 B-1 using the
Aux. Ch. A switch on the transmitter on and off while turning
FSU is to fly the aerial target in straight and level flight and
the AP elevator zero trimer on the FSU until the elevator no
then engage the FSU to keep it in that attitude. When a
longer changes position when the FSU is being turned on and
deviation is desired in the flight path, disengage the FSU and
off.
make the maneuver, and then reengage the FSU. If minor
flight path deviation is desired, normal stick motion will
i. These settings should produce an aerial target that
produce roll and pitch command with a slowerresponse when
maintains its trim settings when the FSU is turned on. Test fly,
the FSU pushbutton is engaged.
readjust, if necessary, using the procedures above.
d. The FSU will recover the aerial target from an inverted
j. If the target is unstable in its roll axis (if it rolls back
position, but sufficient altitude must be available.
and forth) when the FSU is engaged, turn the FSU off and land.
(1) Adjust the AP aileron gain trimmer (see fig. 4-
4-11. TRANSMITTER TRAINER CORD.
2.) counter clockwise twenty degrees to
decrease the gain.
(2) Test fly again. If the target is still unstable in its
The transmitter trainer cord is used when training new opera-
roll axis, repeat the above procedure until it is satisfactory.
tors or teaching new flight patterns such as the ones in figures
k. If the target is unstable in its pitch axis (if it pitches up
2-18 through 2-27. A qualified
controller controls the aerial
and down) when the FSU is engaged, turn the FSU off and
target from the primary transmitter. Contol is transferred to
land.
the trainee transmitter by depressing and holding the training
(1) Adjust the AP elevator gain trimmer (see fig 4-
pushbutton (push to Train SW) on the primary transmitter.
2.) counter clockwise twenty degrees to
decrease the gain.
The trainee controls the aerial target through the training cable
hook-up. When the pushbutton is released, control is returned
(2) Test fly again. If the target is still unstable in its
to the primary transmitter and the primary controller.
pitch axis, repeat the above procedure until it is satisfactory.
l. When mission is complete, position the following
controls to OFF:
Receiver and servo/battery group power switch
Aux. Ch. 1 (FSU)
Transmitter power switch
4-10. OPERATION OF THE FSU.
The flight stabilization unit (FSU) is intended for training
controllers only. The flight stabilization unit is an automatic
pilot. The FSU will produce and maintain the aerial target in
a straight and level flight. Presuming all of the adjustments
have been properly made, the following actions can be ex-
pected:
a. When the FSU is engaged from the transmitter, the
FSU will regain straight and level flight no matter what
attitude the target was in previously. Care must be exercised
that sufficient altitude is available for this; in normal practice,
200 feet is sufficient
b. If the FQM-117 B-1 is in a straight and level flight
when the FSU is engaged, the FSU will maintain it in that
attitude until it is either disengaged or the controller overrides
the FSU with an input from the control stick. After a maneuver
has been accomplished by the controller with the FSU en-
gaged, the FSU will return the target to level flight.
4-7