Communications: electrical – Aircraft alarm or indicating systems – Icing indicator
Reexamination Certificate
2007-05-18
2008-10-21
Tweel, Jr., John A (Department: 2612)
Communications: electrical
Aircraft alarm or indicating systems
Icing indicator
C340S581000
Reexamination Certificate
active
07439877
ABSTRACT:
An ice detection system that detects the onset of ice accreation on an aircraft's external surfaces, continuously measures its thickness and growth time history and provides the type of ice, glaze or rime, is disclosed along with an independent way to confirm that the contaminant is known to be ice and only ice. Total impedance data, thermal conductivity value and complex dielectric properties are used to discriminate between ice, water, deicing fluid and snow with measurements made by low cost, low power consumption, low profile, miniature electronic chips, components and devices collocated together on the external surface in a thin pliant patch that does not effect the airflow about the aircraft. The ice detection system provides ice accreation data and warning signals to displays and aural signaling devices in the cockpit for the pilot and to the control console of a ground controller flying the aircraft if it is unmanned.
REFERENCES:
patent: 2432669 (1947-12-01), Kliever
patent: 3045223 (1962-07-01), Kapany et al.
patent: 3976270 (1976-08-01), Catchpole
patent: 3996787 (1976-12-01), Edgington
patent: 4053127 (1977-10-01), Edgington
patent: 4054255 (1977-10-01), Magenheim
patent: 4095456 (1978-06-01), Edgington
patent: 4553137 (1985-11-01), Marxer et al.
patent: 4745804 (1988-05-01), Goldberg et al.
patent: 4766369 (1988-08-01), Weinstein
patent: 4819480 (1989-04-01), Sabin
patent: 5095754 (1992-03-01), Hsu et al.
patent: 5140135 (1992-08-01), Freeman
patent: 5191791 (1993-03-01), Gerardi et al.
patent: 5206805 (1993-04-01), Gerardi et al.
patent: 5301905 (1994-04-01), Blaha
patent: 5394340 (1995-02-01), Inkpen et al.
patent: 5398547 (1995-03-01), Gerardi et al.
patent: 5474261 (1995-12-01), Stolarczyk et al.
patent: 5521584 (1996-05-01), Ortolano et al.
patent: 5523959 (1996-06-01), Seegmiller
patent: 5551288 (1996-09-01), Gerardi et al.
patent: 5569850 (1996-10-01), Rauckhorst, III
patent: 5621332 (1997-04-01), Inkpen et al.
patent: 5621400 (1997-04-01), Corbi
patent: 5652522 (1997-07-01), Kates et al.
patent: 5686841 (1997-11-01), Stolarczyk et al.
patent: 5760711 (1998-06-01), Burns
patent: 5790026 (1998-08-01), Lardiere et al.
patent: 5874672 (1999-02-01), Gerardi et al.
patent: 5886256 (1999-03-01), DeAnna
patent: 5955887 (1999-09-01), Codner et al.
patent: 6166661 (2000-12-01), Anderson et al.
patent: 6304194 (2001-10-01), McKillip
patent: 6320511 (2001-11-01), Cronin et al.
patent: 6328467 (2001-12-01), Keyhani
patent: 6384611 (2002-05-01), Wallace et al.
patent: 6425286 (2002-07-01), Anderson et al.
patent: 6430996 (2002-08-01), Anderson et al.
patent: 6608489 (2003-08-01), Yankielun et al.
patent: 6653598 (2003-11-01), Petrenko et al.
patent: 6731225 (2004-05-01), Vopat
patent: 6879168 (2005-04-01), Baas et al.
patent: 6995572 (2006-02-01), Arndt et al.
patent: 7000871 (2006-02-01), Barre et al.
T. L. Samuels, “Meteorological Conditions During the Formation of Ice on Aircraft” NACA TN No. 439, Dec. 1932.
J. W. Valvano, et al., “The Simultaneous Measurement of Thermal Conductivity, Thermal Diffusivity, and Perfusion in Small Volumes of Tissue”, Trans. of ASME, 192, vol. 106, Aug. 1984.
W. D. Coles, “Experimental Determination of Thermal Conductivity of Low Density Ice”, NACA Technical Note 3143, Mar. 1954.
P. Jarvinen, “Aircraft Ice Detection Method” AIAA Paper 2007-0689, Proceedings of the 45th Aerospace Sciences Meeting and Exhibit, Jan. 8-11, 2007, Reno, NV.
Analog Devices Model AD5933, “1 MSPS, 12-Bit Impedance Converter, Network Analyzer AD5933”.
Analog Devices Application Note AN-843, “Measuring a Loudspeaker Impedance Profile Using the AD5933”.
P. V. Hobbs, Ice Physics, pp. 82 thru 87, Clarendon Press, Oxford, 1974.
R. P. Auty, “Dielectric Constants of Solid H2O and D20”, PhD Thesis, Brown University Apr. 1951.
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