Rotor blade cover system

Details Rotor blade cover system Rotor blade cover system

1999-03-16

2000-08-29

Look, Edward K.

Fluid reaction surfaces (i.e., impellers)

Removable auxiliary attachment to work surface

416 39, 416 95, E04H 1506

Patent

active

061098728

ABSTRACT:
A helicopter rotor cover system to prevent ice formation on the rotors. The system is comprised of a main rotor cover and a tail rotor cover providing an enclosed space around the rotors, a tubular member connecting the enclosed spaces of the two covers and a hot air blower to blow hot air into the two covers. The covers and the tubular member are made from a fabric impermeable to water. The covers have adjustable outlet openings to allow flow of heated air to all portions inside the covers. The covers also have grommets for water drainage. For ease of installation and removal, the covers may have separate pieces or openings that are joined with hook-and-loop fabric fasteners. The main rotor blade covers have oval ribs distributed along the rotor blades to reduce the contact area between the blades and the covers and facilitate flow of air. A portable gas tank and a portable battery provide fuel and electricity for the hot air blower.

REFERENCES:
patent: 4520603 (1985-06-01), Brogie
patent: 5179968 (1993-01-01), Deichmann
patent: 5765779 (1998-06-01), Hancock et al.
patent: 5947686 (1999-09-01), Keyes

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