There is usually a twist throttle on the collective for a single engine helicopter. On twin engine helicopters, does the twist throttle control it for both engines, or just for one?
Twin engine helicopters: is the throttle controlled separately for each engine or together?
Most employ separate throttles, either twist-type, on the collective or levers in an overhead quadrant.
Bell products use duel collective mounted, twist type throttles, in series. Sikorsky uses overhead levers. French SA > AS > Eurocopter > Airbus > Leonardo use levers overhead. Agusta uses overhead levers.
5$\begingroup$ An example would greatly improve the answer. $\endgroup$– user14897Apr 4, 2019 at 16:19
$\begingroup$ @Walker, are there two separate twist type throttles, or just one (that controls both engines) on Bell helicopters? $\endgroup$ Apr 5, 2019 at 16:02
$\begingroup$ @jeff0000 Yup. Sorry. Bells use two separate twist throttles, in series (See Edit). I don't remember which engine corresponds to the more forward twist-grip vs the more aft twist-grip. $\endgroup$– WalkerApr 5, 2019 at 17:09