ed out that when tests at low temperatures are made a lubricant must be chosen ing the speed which is accomplished by a pressure of which in the temperature range remains in the liquid the hand on the rim. A rheostat R mounted on the base of the apparatus forms part of the electrical state. circuit… … Figure 21.—Tachometer test stand and temperature control chamber. between the motor and the power supply, (6) for points must be obtained by mechanical means since reversing the direction of rotation of the motor, and the motor speed cannot be sufficiently varied. The (c) for inserting the rheostat…
NASA Technical Reports Server (NTRS)
Internet Archive · NASA Technical Reports · Public domain (US government work). Free to use for anything.
