2-39
Takeoffs with Glider on Tow
63. Take-off with glider in tow is accomplished as follows:
a. complete the STOP AND GO CHECK, ensuring that 10º flap is selected;
b. at the TAKE UP SLACK signal, advance power slightly and relax pressure on the
brakes to achieve a slow crawl until all out signal;
c. at the ALL OUT signal, release brakes and slowly and smoothly apply full throttle;
d. commence the takeoff roll with the yoke held approximately 2/3 aft;
Due to the high engine power, use of a normal takeoff
technique will result in an extremely high rate of climb
on liftoff, making it difficult for the glider pilot to
transition to the climb. Use of the soft field takeoff
technique for towing operations will yield a more
gradual transition to the climb.
e. as aircraft starts to roll, slightly relax back pressure to maintain a slightly nose
high attitude;
f. due to the high angle of attack, the aircraft will become airborne in ground effect
at between 50-60 MPH. As the aircraft becomes airborne, smoothly lower the
pitch attitude so that the aircraft accelerates in ground effect;
g. smoothly adjust pitch attitude to establish a 70 MPH climb. Once safety
established in a stable climb, reduce propeller RPM to 2700 RPM. For noise
abatement, propeller RPM can be reduced to 2500 RPM.
If the glider climbs prematurely prior to tow plane lift-
off, forces on the tow rope may cause wheel-
barrowing. Apply aft pressure on the yoke to counter
such tendency, or release the glider if aircraft control
is in doubt.
Noise abatement procedures will reduce climb
performance. Do not initiate noise abatement
procedures if a rate of climb appropriate to local
terrain and obstructions cannot be maintained. If rate
of climb is not adequate, immediately apply full power
(propeller full fine and full throttle).
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