| 摘要 |
A propeller type velocity indicator including a casing; a propeller shaft rotatably mounted through the casing with a portion of the shaft extending within the interior of the casing and a portion extending exterior of the casing; a propeller mounted on the exterior portion of the shaft; the interior portion of the propeller shaft having an irregularity; a needle mounted within the casing so as to engage the shaft and sense the irregularity thereof; and pickup means mounted within the casing and connected to the needle for converting vibrations of the needle into electrical signals.
|
