Horizons in Pilot Training: Desktop Tutoring Systems

A passive treadmill having a governor to adjustably limit the rate of speed of the treadmill belt. Resilient flexible rotating blades flex due to the centrifugal force developed during rotation, the magnitude of the centrifugal force being a function of the linear speed of the treadmill belt. Brake pads mounted on the flexible blades move into sliding engagement with an annular stationary surface to limit the linear speed of the treadmill belt. A rotatably mounted cam is manually adjustable to adjust the spacing between the aforesaid slidably engageable surfaces to adjust the governor. The governor assembly is of relatively small size and volume and the moving components of the governor are mounted within a compact casing. The rollers, which rollingly support the treadmill belt, are rotatably mounted within elongated openings provided in each of a pair of mounting rails. Roller support shafts are inserted into slots arranged at spaced intervals along the support rails and a compressible rope is arranged between the support shafts and the upper interior surface of the support rail elongated openings. A single elongated rod in the elongated opening of each rail supports all of the associated shafts, providing the dual functions of securing said roller shafts in position and rotatably supporting all of the roller shafts at a uniform height. The compressible rope compensates for any tolerances between the parts and prevents the roller shafts, and hence the rollers, from experiencing any undesirable movement and/or vibration.

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