AIR PRESSURE TRANSDUCER Russian patent published in 1999 - IPC

FIELD: devices for detection of aircraft flight characteristics or other liquid or gas flow investigation equipment. SUBSTANCE: device has rod, which carries multiple ribs oriented along it with groups of holes between ribs which are connected to connecting pipes via pneumatic circuits. Ribs are continuous in longitudinal direction, there number n is greater than 3. Groups of holes are located between ribs on smooth side surfaces of rod and are spaced from ribs by a ≥ 0,1b, where b is distance between ribs in arbitrary cross section of rod. Angle between side surfaces in arbitrary cross section of rod γ. Sharp ribs may be rounded or blunted by roots, they may be also designed as projections. Side surfaces of rod may be convex, cylindrical, cone, and so on. Number of ribs on rod of air pressure transducer depends on goal and may be equal to four, five and six. EFFECT: simplified design, increased precision, decreased weight of device and flow measuring equipment. 9 cl, 13 dwg