초록 ▼

A model rotary wing aircraft is provided that includes a fuselage, a power plant, a main rotor, a tail rotor, and a drive apparatus. The power plant includes a passive cooling system to transfer heat produced by the power plant to the atmosphere. The passive cooling system consumes less than about f

A model rotary wing aircraft is provided that includes a fuselage, a power plant, a main rotor, a tail rotor, and a drive apparatus. The power plant includes a passive cooling system to transfer heat produced by the power plant to the atmosphere. The passive cooling system consumes less than about five percent of the power produced by the power plant. The main rotor is driven by the power plant at a main rotor speed of rotation and the tail rotor is driven by the power plant at a tail rotor speed of rotation. The drive apparatus transfers power from the power plant to the main rotor and tail rotor to rotate the tail rotor at a tail rotor speed of rotation that is about three times greater than the main rotor speed of rotation to minimize the amount of power used by the tail rotor.

대표청구항 ▼

[ We claim:] [1.] A system for controlling the flight performance of a radio-controlled model helicopter having a power plant configured to produce power, a main rotor, and a tail rotor, wherein the main rotor is supported for rotation about a main rotor axis of rotation and driven by the power plan

[ We claim:] [1.] A system for controlling the flight performance of a radio-controlled model helicopter having a power plant configured to produce power, a main rotor, and a tail rotor, wherein the main rotor is supported for rotation about a main rotor axis of rotation and driven by the power plant at a main rotor speed and the tail rotor is supported for rotation about a tail rotor axis of rotation and driven by the power plant, the system comprisinga power plant cooling system for cooling the power plant, the power plant cooling system consuming less than about five percent of the power produced by the power plant andmeans for allocating the power produced by the power plant so that power produced by the power plant is distributed among the power plant cooling system, main rotor, and tail rotor, wherein [the power plant cooling system consumes less than about five percent of the power produced by the power plant and] the tail rotor is rotated by the power plant at a tail rotor speed of less than about three times the main rotor speed at which the main rotor is rotated by the power plant so that the tail rotor consumes a minimum amount of power produced by the power plant.