Measuring and testing – Navigation – Leeway incidence or side-slip
Patent
1992-03-27
1994-04-05
Woodiel, Donald O.
Measuring and testing
Navigation
Leeway incidence or side-slip
73181, 7320411, G01C 2100, G01F 168
Patent
active
052994554
ABSTRACT:
An instrumentation system for measuring airspeed and angle-of-attack (AOA) is provided. The system includes a sensor assembly, a constant voltage anemometer, a microprocessor assembly with software, and an output device suitable for powering conventional cockpit display or for powering other speed AOA devices such as engine inlets and stability augmenters. The sensor assembly is a pair of orthogonal miniature cylinders with embedded micro-thin multielement hot film sensors. Operation of the sensor assembly by the constant voltage anemometer provides detection of cylinder leading edge flow stagnation point and oscillatory frequency. The stagnation point determination provides angle-of-attack data; the oscillatory flow frequency provides data to calculate cylinder shed-vortex frequency which is converted to airspeed data. The sensor assembly is solid-state, having no ports, diaphragms or moving parts and is heated in normal operation.
REFERENCES:
patent: 2923152 (1960-02-01), Mabry et al.
patent: 3069906 (1962-12-01), Eiland, Jr.
patent: 3082622 (1963-03-01), Andrew
patent: 3443431 (1969-05-01), Hagen
patent: 3475958 (1969-11-01), Sabadishin et al.
patent: 3482445 (1969-12-01), Leo et al.
patent: 3500685 (1970-03-01), Gwathmey
patent: 3646811 (1972-03-01), DeLeo et al.
patent: 4230290 (1980-10-01), Townsend et al.
patent: 4428549 (1984-01-01), Halliday et al.
patent: 4563684 (1986-01-01), Maris
patent: 4672846 (1987-06-01), LeBlond et al.
Greene Raymond L.
Woodiel Donald O.
LandOfFree
Method and instrumentation system for measuring airspeed and flo does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Method and instrumentation system for measuring airspeed and flo, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and instrumentation system for measuring airspeed and flo will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-504924