starapex
Active Member
VTOAL AIRCRAFT
Food for thought.
Some thought to utilize the need of a dart shaped vertical take off and landing aircraft with a powerful light weight motor mounted in a ball type mount for steering.
We need a one rotor Wankel type engine, with a replaced stationary gear with a pair of inner and outer shafted gears, each containing one extra tooth and one minus tooth of the replaced stationary gear driving counter rotating propellers.
For information only, the Mazda rotary engine would produce a 34 to one gear ratio for the counter rotating propellers using 33 tooth and 35 tooth diving gears. The torque would come direct from the rotor and not from the .591” throw of its eccentric shaft.
In fact the Wankel engine design is more suited to a compressor configuration as it has insufficient housing surfaces for precision four cycle operation.
A simple but imperect rotar housing design engine can be made by drawing four 3.65” diameter circles separated ninety degrees 1.08” from center. Then draw four 2”diamerter circles 3.47” from center to make a smooth housing line transition. Delete the interior and exterior lines and enclose them in a 7.25” circle. for the rotor put .75 inch curves at the apex points of a five sided polygon that fits in a 5.49” circle.
After drawing this configration note that it requires two spark plugs and completes ten four stroke cycles evey rotar revolution. It has two intake and two exhaust ports.
Propeller blade design should incorporate within itself, the ability to diminish centrifugal forces. Therefore it appears reasonable that the propeller blades V into the direction of travel.
Ken
Food for thought.
Some thought to utilize the need of a dart shaped vertical take off and landing aircraft with a powerful light weight motor mounted in a ball type mount for steering.
We need a one rotor Wankel type engine, with a replaced stationary gear with a pair of inner and outer shafted gears, each containing one extra tooth and one minus tooth of the replaced stationary gear driving counter rotating propellers.
For information only, the Mazda rotary engine would produce a 34 to one gear ratio for the counter rotating propellers using 33 tooth and 35 tooth diving gears. The torque would come direct from the rotor and not from the .591” throw of its eccentric shaft.
In fact the Wankel engine design is more suited to a compressor configuration as it has insufficient housing surfaces for precision four cycle operation.
A simple but imperect rotar housing design engine can be made by drawing four 3.65” diameter circles separated ninety degrees 1.08” from center. Then draw four 2”diamerter circles 3.47” from center to make a smooth housing line transition. Delete the interior and exterior lines and enclose them in a 7.25” circle. for the rotor put .75 inch curves at the apex points of a five sided polygon that fits in a 5.49” circle.
After drawing this configration note that it requires two spark plugs and completes ten four stroke cycles evey rotar revolution. It has two intake and two exhaust ports.
Propeller blade design should incorporate within itself, the ability to diminish centrifugal forces. Therefore it appears reasonable that the propeller blades V into the direction of travel.
Ken
