approxi- to the dial. Damping of the disk is obtained by means mately 4K pounds. of a permanent magnet, the use of which requires Pioneer.—This instrument is of the 2-phase type shielding so as to avoid affecting the compass. Tem- and consists of an a.c. generator and an a.c. indicator. perature… … Figube 16.—Pioneer a.c. electric tachometer. A, generator; B, indicator. coils. The pointer moves 345° of arc for the range 400 and the stator is of the 2-phase 3-wire, wound type. A swamping resistance is added so as to obtain an indi- to 3,000 r.p.m. The weights of the generator and the indicator…
NASA Technical Reports Server (NTRS)
Internet Archive · NASA Technical Reports · Public domain (US government work). Free to use for anything.
