Measuring and testing – Navigation – Leeway incidence or side-slip
Patent
1976-08-06
1977-12-06
Goldstein, Herbert
Measuring and testing
Navigation
Leeway incidence or side-slip
340 27SS, G01C 2100
Patent
active
040610292
ABSTRACT:
An arrangement for sensing the fluid separation along a surface employs a thermally insulating element having a continuous surface blending into and forming a part of the fluid flow surface. A heating conductor is mounted on the element at the element surface. Two thermal sensors each has a conductor, the sensor conductors being mounted at the element surface on opposite sides of the heating conductor. In operation a fluid flow along the surface in a direction successively through the conductors carries heat in its wake to the downstream conductor where it is sensed. The upstream sensor also senses the temperature of the fluid flow before it reaches the heating conductor. When the fluid flow separates from the surface at the area of the heating and sensing conductors, a sudden decrease in the temperature of the downstream sensor conductor and concomitant increase in the temperature of the upstream sensor conductor is an indication of the separation. When the temperatures are returned to the state achieved during normal flow, the indicator thereby indicates the normal, attached fluid flow. The conductors may be, for example, wires or thin films, and should be within the viscous sub-layer of the expected fluid flow. The use of an upstream sensor conductor with the downstream sensor conductor is desirable as tending to compensate for changes in the free or ambient temperature of the fluid in the flow. A single heater and several pairs of sensors and corresponding sensor conductors may be used to detect not only the fluid flow and the separation, but the direction of the fluid flow, over the fluid flow surface.
REFERENCES:
patent: 2431241 (1947-11-01), Goodsey, Jr. et al.
patent: 2496339 (1950-02-01), Giers et al.
patent: 3075515 (1963-01-01), Richards
patent: 3196679 (1965-07-01), Howland
patent: 3500686 (1970-03-01), Bell
patent: 3677085 (1972-07-01), Hayakawa
patent: 3995480 (1976-12-01), Edgerton
Brosh Aviel
Fletcher James C. Administrator of the National Aeronautics and Space
Mateer George C.
Brekke Darrell G.
Goldstein Herbert
Manning John R.
McMillian Armand
LandOfFree
Flow separation detector does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Flow separation detector, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Flow separation detector will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1544655