The Next Revolution in Flight & Aviation: Dynamic-Variable-Pitch Propeller TechnologyIn addition, Blainjett Aviation envisions new types of aircraft utilizing the propeller technology. These include a quadcopter with forward facing rotors, …from Google Alert – quadcopter j.mp/2DZx46zvia Tommy Gerladohttp://www.tommygerlado.com/2019/02/the-next-revolution-in-flight-aviation.html