this time at idle setting.
If your plane cannot maintain flight for a minimum of 15sec without
engine power, do not enable the restart function.
-I’m flying my plane and the engine has shutdown with restart enabled, what should I do:
1) Think that the chances of that the engine restart are slim. You don’t know why it has shut
down, so likely it will not restart, DO NOT RELY on it.
2) Fly your plane. Leave the throttle at mid setting and fly your plane keeping airspeed in aft for
a dead stick landing.
3) In case you see the plane begins to stall or an uncontrolled landing is most likely,
IMMEDIATELY set the trim and stick to STOP position to abort the restart function. A crash with
the engine running normally ends with a fireball; a crash with the engine off is not likely to
catch fire. Do not use the “digital trims” to shut down the engine, use a dedicated switch to be
operated quickly.
4) If the engine restart is initiated while on approach, evaluate if the speed/position of the
plane is still good for a safe landing, if so, land immediately, you don’t know why the engine
stopped and may stop again during a “go around” but this time the aircraft may not be in an as
favorable position. If the position/speed of the plane is not convenient, use the engine power
to go around and plan for a normal landing, BUT land as soon as possible.
5) Once the plane is on the ground, even in normal landing or crash landing, set the
transmitter in the STOP position. The engine could restart and go to full power on its own; the
ecu does not know when the plane is on the ground.
-Can I use the restart function many times?
NO!
Restart function is an emergency procedure
and places a high stress on the engine ancillary
components. The starter and ignitor are fed with extra power that is not used in normal
startups, this places considerable more wear on them, also the engine is subjected to abrupt
temperature changes that could shorten its life.
Restart function is not the replacement of a poor fuel system
. It can save a plane in particular
circumstances, but it can do much more harm than good. A belly landing or landing gear
damage due to a flameout induced heavy landing is more favorable than a similar landing
arrival with the engine in start phase that can possibly cause a fire and result in total
destruction of the model and or property. Please Think twice before enabling the auto restart
feature.
Disclaimer:
There are no circumstances Jets Munt P/L or any of its Service Agents and employees will
accept or be held responsible for any losses or damages the Auto Restart feature causes should
the owner operator choose to enable this function.
Throttle curves
By default the ecu control the RPM in linear way, i.e., at half stick position the engine turn at
half of the rotor RPM range. Jet engines develop the thrust in exponential mode, thus half RPM
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