Convert Revolutions per hour to Microradians per second
Convert Revolutions per hour (rev/h) to Microradians per second (µrad/s) instantly and accurately.
Conversion Formula
µrad/s = rev/h × 1745.329252
About Revolutions per hour
The revolution per hour (rev/h) equals π/1800 rad/s ≈ 1.745 × 10⁻³ rad/s, used for very slow rotating machinery. Cement rotary kilns - the world's longest continuously rotating machines (up to 230 m, 4000 t) - rotate at 1-5 rev/h; ball mills for ore grinding at 10-20 rev/h; concrete mixer trucks at 1-4 rev/h during transport. Large astronomical antenna drives and slow-scan telescope azimuth movements are also conveniently expressed in rev/h. 1 rev/h = π/1800 rad/s ≈ 0.02778 rpm.
About Microradians per second
The microradian per second (µrad/s) is 10⁻⁶ rad/s. Earth's mean sidereal rotation rate is ≈72.921 µrad/s, the single most important reference at this scale. Navigation-grade ring laser gyroscopes (Honeywell GG1320) reach bias stability below 0.15 µrad/s; fibre-optic gyros for satellite attitude control (iXBlue ASTRIX-120) achieve 0.048 µrad/s. Postglacial isostatic rebound produces crustal block rotations detectable at 0.1-1 µrad/s in GPS survey networks. 1 µrad/s = 10⁻⁶ rad/s ≈ 5.73 × 10⁻⁵ °/s.
Quick Reference Table
| Revolutions per hour (rev/h) | Microradians per second (µrad/s) |
|---|---|
| 1 rev/h | 1745.33 µrad/s |
| 2 rev/h | 3490.66 µrad/s |
| 5 rev/h | 8726.65 µrad/s |
| 10 rev/h | 17453.3 µrad/s |
| 25 rev/h | 43633.2 µrad/s |
| 50 rev/h | 87266.5 µrad/s |
| 100 rev/h | 174533 µrad/s |