Patent ID: 7011274

Claim:
An aircraft comprising: a hydraulic drive propelled by 2 composed separated forces including an engine, and a very high pressure pump driven by the engine, a central chassis having tubes, the chassis defining a rectangular form for 3 persons including the pilot in the center, above the engine, and 2 passengers on each side of the pilot for rapid exit, the chassis having a central axle, a first welded triangular girder fixed on the central axle, a second welded triangular girder fixed on the central axle, the second girder being behind the first girder, the first and second girders including strengthening crosspieces; first and second lift rotors; a first vertical shaft coupled to drive the first lift rotor; a first hydraulic turbine coupled to drive the first vertical shaft, the first hydraulic turbine being in fluid communication with the pump; a first support fixed at an end of the first girder, the first support holding the first hydraulic turbine; a second vertical shaft coupled to drive the second lift rotor; a second hydraulic turbine coupled to drive the second vertical shaft, the second hydraulic turbine being in fluid communication with the pump; a second support fixed at an end of the second girder, the second support holding the second hydraulic turbine, wherein each lift rotor has 4 blades of 20 feet diameter, each blade being more stable and wider at a pivoting connection, each blade having a tip downward 50 degrees curve to avoid gushing outwards, each blade having an air passage, thereby avoiding vibration of the 4 blades of the lift rotor; a source of compressed air, and a mechanism that couples the source of compressed air to the very high pressure pump in the event of failure of the engine.