Aeronautics and astronautics – Aircraft – heavier-than-air – Helicopter or auto-rotating wing sustained – i.e. – gyroplanes
Patent
1975-06-30
1976-06-29
Blix, Trygve M.
Aeronautics and astronautics
Aircraft, heavier-than-air
Helicopter or auto-rotating wing sustained, i.e., gyroplanes
B64D 4700
Patent
active
039661440
ABSTRACT:
Under high wind gust conditions, a containerized load is subject to swaying as it is being hoisted or lowered onto a loading platform. A ductwork arrangement is proposed in which the wind gust itself provides the energy to help maintain the load in a horizontal, level position. This achievement is accomplished in two ways. First, the wind gust hits an array of very light spring-loaded hinged doors specially mounted to deflect the air upward, thus partially alleviating some of its impact. Second, the air, which passes through the door openings, is guided to follow a central overhead duct along with other air from the wind gust to the load's opposite side. The central overhead duct is specially designed to assist in guiding the air to the load's opposite side. A bulged door at each end of the central duct helps direct the air smoothly downward into a depending duct portion to make impact on the load's opposite side. A similar gust alleviation technique is applied to the helicopter itself hovering overhead and suspending the load. In this case the door hinges are mounted above the door instead of below in order for the air to be deflected downward, thus providing additional lift for the aircraft, while simultaneously alleviating wind gust effects by dissipating a portion of the wind to other directions. The duct system consists of two jackets, one mounted on each side of the fuselage. Each jacket has two or more rows of doors, hinged on top, which open inward when wind gusts blow against the fuselage, to help direct the wind gust downward, and thus be expelled through openings which occur along the lower sides of the jackets. This duct system may be used on the helicopter even without a suspended containerized load to enable the craft to fly more safely under gusty conditions.
REFERENCES:
patent: 2518697 (1950-08-01), Lee
patent: 3721466 (1973-03-01), Abrams
Blix Trygve M.
Kelmachter Barry L.
LandOfFree
Duct system for wind gust alleviation of aircraft and suspended does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Duct system for wind gust alleviation of aircraft and suspended , we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Duct system for wind gust alleviation of aircraft and suspended will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1272342