- #1
Herrbeta
- 3
- 0
Hi all!
All the way from Sweden comes a small question...
Planning to build a simple RC helicopter which, in the first stage, only should be able to take off. My idea was to use either a small lawnmover engine, or one from a chainsaw and build the helicopter with two props, turning opposite directions. I´ve calculated a bit on this but having difficulties with how much power that is neccesary for let´s say a craft that weighs about 20-30kg (44-66Lbs). I guess this is highly depending on the blades efficiency though.
Do you think a craft like this is possible to build with two moderate sized homebuilt propellerblades, and in that case, if you should assume their efficiency (make it low...) How much power must the engine approx. produce?
I realize this is kinda vague, but I really would appreciate an answer. Maybe someone built something similar.
Regards
/Johan, Sweden
All the way from Sweden comes a small question...
Planning to build a simple RC helicopter which, in the first stage, only should be able to take off. My idea was to use either a small lawnmover engine, or one from a chainsaw and build the helicopter with two props, turning opposite directions. I´ve calculated a bit on this but having difficulties with how much power that is neccesary for let´s say a craft that weighs about 20-30kg (44-66Lbs). I guess this is highly depending on the blades efficiency though.
Do you think a craft like this is possible to build with two moderate sized homebuilt propellerblades, and in that case, if you should assume their efficiency (make it low...) How much power must the engine approx. produce?
I realize this is kinda vague, but I really would appreciate an answer. Maybe someone built something similar.
Regards
/Johan, Sweden