I have added a power to weight ratio rows on the bottom
of the Boeing VTOL table.
Looks like we need to get the empty weight down to 666 pounds.
13B p-port engine with aluminum end housings is 165 pounds.
Gear box and rotors are 100 pounds.
Drive shaft and accessories are 100 pounds.
That leaves only 300 pounds for carbon fiber structure.
We will probably need smaller wings with less wing area if not a delta
configuration. A delta configuration would ease the
CG, structural problems and high speed aerodynamic drag.
It would also shorten the drive shaft from engine to gear box.
A small canard for enhanced control purposes might be OK.
No room for anything other than an optimized design in carbon fiber.
Sorry Perry.
The gross weight needs to be less than 1200 pounds.
Payload and fuel must then be 534 pounds.
Two 175 pound people are 350 pounds.
That leaves 184 pounds of fuel or 31 gallons.
At 10 gallons an hour 200 MPH cruise that gives us 3.1 hours
or 600 mile range. Beats a Robinson R22.
Paul Lamar ...No rotor no motor.
I haven't worked out the details yet. I started with a standard Long-EZ
model that has gross weight of something just less than 1500 lbs. and
the current simulation is running around 1200 lbs. gross I think. With
300HP and 12' rotors it is underpowered. I currently have it set to
400HP and it will definitely climb vertically with that power.
I brought my son's joystick to work so today I'm going to play with
rhino rudder and elevator surfaces to see if I can control hover.
Perry
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