Aeronautics and astronautics – Aircraft structure – Ice prevention
Patent
1995-10-17
1998-06-30
Barefoot, Galen L.
Aeronautics and astronautics
Aircraft structure
Ice prevention
340581, 73627, 7386104, B64D 1520
Patent
active
057721530
ABSTRACT:
An icing sensor utilizes a surface gap transmission line along which a radio frequency is transmitted. The phase delay of the radio frequency along the transmission line is dependent upon the dielectric constant presented at the surface in the gap between the transmission line electrodes. Accordingly, changes of dielectric constant affect phase delay of the transmitted frequency. This phase delay may be used to detect the difference between ice, water and snow as well as the presence of freezing point depressing fluids such as ethylene glycol. When the sensor is mounted on an aircraft control surface, the presence and likelihood of icing conditions may be predicted. Through the use of one or more temperature, freezing point depressing fluids/water mixture determined from dielectric constant, and rate of change of the dielectric constant, it is possible to predict the time delay until icing begins. Thus, the sensor of the present application may safely reduce the effort and expense in aircraft deicing.
REFERENCES:
patent: 2355014 (1944-08-01), Schorn
patent: 2359787 (1944-10-01), Peters et al.
patent: 2432669 (1947-12-01), Kliever
patent: 3540025 (1970-11-01), Levin et al.
patent: 3882381 (1975-05-01), Gregory
patent: 4054255 (1977-10-01), Magenheim
patent: 4628736 (1986-12-01), Kirby et al.
patent: 4688185 (1987-08-01), Magenheim et al.
patent: 4766369 (1988-08-01), Weinstein
patent: 4782331 (1988-11-01), Martens
patent: 4797660 (1989-01-01), Rein, Jr.
patent: 4803470 (1989-02-01), Fineman
patent: 4851817 (1989-07-01), Brossia et al.
patent: 4891796 (1990-01-01), Sekine
patent: 5005015 (1991-04-01), Dehn et al.
patent: 5072172 (1991-12-01), Stolarczyk et al.
patent: 5134380 (1992-07-01), Jonas
patent: 5381694 (1995-01-01), Glynn et al.
patent: 5467944 (1995-11-01), Luukkala
patent: 5474261 (1995-12-01), Stolarczyk et al.
patent: 5585551 (1996-12-01), Johansson et al.
Abaunza John T.
Donnangelo Nicholas C.
LandOfFree
Aircraft icing sensors does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Aircraft icing sensors, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Aircraft icing sensors will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1851118