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How does a helo pilot trim the collective, throttle or cyclic controls in a set position, to be able to change frequencies, fold charts, etc.???? (Assuming no A/P).
Thanks for the replies.
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Most all helos have a "friction grip" for the collective so the pilot doesn't have to constantly be hold the collective in cruise. Also, unlike older helos, the throttle is interlinked with the collective, so you don't have to roll-in/roll-off the throttle as you manage the collective. The cyclic can be trimmed somewhat and held between the knees, since you can't really "hands-off" a helo for more than a few seconds.
Also, unlike older helos, the throttle is interlinked with the collective, so you don't have to roll-in/roll-off the throttle as you manage the collective.
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On the General Electric T64 engines (used on the H53), the engine's hydro-mechanical fuel control is rigged to both the engine speed levers (used by pilots to manage actual engine power from idle through max power, as well as to help manage torque) and to the collective. When the pilot increases collective input, the system is rigged and calibrated to increase the fuel flow to the engine just enough to maintain the desired rotor speed and torque. The pilots can then tweak the power settings as needed with the speed levers during gross power adjustments.