Hello, yes the gearbox is situated below the lower rotor. It changes direction of both rotor planes. Rotating the helicopter around y axis is achieved by changing the angle of attack of the upper rotor blades with a lever system (which is protected by a patent). Therefore, the aerodynamic drag of the upper rotor plane compared to the lower one is changed and the whole helicopter rotates around vertical axis.
The pedals are connected to the stabiliser with a rope. Additionally, they are connected to the upper rotor blades with a lever system (which is protected by a patent). Therefore, the aerodynamic drag of the upper rotor plane compared to the lower one is changed and the whole helicopter rotates around vertical axis. Logically, the stabiliser is only working when the helicopter flies with forward or backward speed.
The VA115 is ready to buy. You just have to get in touch with us. Use www.rotorschmiede.de or info@rotorschmiede.de and you will get your new toy right away. Have fun!
Monster's Inc. Stanley Hiller’s 1st chopper, XH-44, of 1944 was coaxial. Gyrodyne QH-50 (early 60’s) was another. Good question of why these faded and Kamov persisted. First, I suspect Sikorsky/Bell layout became the military paradigm & others had to follow suite to get a contract. Second, The coax rotor head is complicated. Third, there maybe coax engineering problems that were insolvable until computers. As an example, look at the distance between the rotor disc of the Kamov and Sikorsky X-2. Why? Kamov has fully articulated blades (Old school) and had to be separated to keep from interfering. X2 is rigid rotor and computer designed and controlled. Old tech revitalized by new tech. Next we may see tip drive resurge using very small turbojets. The Radio Control turbojet engines have enough thrust (70lb) for one man chopper. Efficiency is poor, but much, much better than old school ramjets/pulse jets. Life is 25hrs, but life and efficiency fixed w/ deeper pockets. Makes sense... single rotor, no transmission. Cheers
Hi Robert, maybe it seems that we have two engines but it is only one. It's a 2 cylinder 2 stroke with forced cooling on each cylinder which maybe looks like turbines ;)
Here in the USA, if it has two engines you must have a private pilots license to fly. Sport pilots license other wise provided it meets weight requirements. I have been wanting to build a helicopter for years. But I wanted a coaxial setup. Will you guys be selling plans or within be a kit purchase? Thank you for responding.
I like all the folks asking about price. They apparently don't know about helicopters, or aircraft in general. If you have to ask the price, you cannot afford one! The cost to enter is very high (but fair for the complexity) and once you are "in the door" the cost to maintain must be taken into serious consideration. Lots of moving parts that need constant inspection and sometimes replacement. I guess it is a case of be rich or go home, but their price seems fair.
