Altitude operation
The engine is designed to work up to at least 3.000m
altitude.
The power available will be about 30% less than at
MSL
(roughly about 7 kW).
On the other hand fuel efficiency is slightly
improving with altitude.
However demonstration was performed up to 1.000m so
far.Further testing at higher altitude needs to be
performed.
Dual engine application
Possible and demonstrated.
Each engine needs its own ECU, pump, fuel valves and
so on.
Each engine shall drive its own Delrin gear with
free wheel hub in the center (to avoid driving the
other engine in the event of single engine failure).
Both Delrin gears can be fitted to the same single
lay shaft driving one main helicopter gear box.
Lifting capability (vertical helicopter take off
between MSL and 1.000m altitude)
Depending on quality and efficiency of main and tail
rotor system.
We recommend a two bladed main and tail system.
Main rotor diameter about 3m, tail rotor diameter of
about 0,6m.
As with most helicopters, if the blade profiling and
rpm are right the lifting capability is about 4kg
per horse power.
As one engine develops 10,6kW/14 HP the single
engine helicopter shall be able to have about 50-60
kg max Take Off Weight.
The dual set up can be as heavy as 100-120 kg max
TOW.
As with all helicopters during cruise (forward
speed) the required power is a lot less than during
vertical take off and landing.
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