Convert Inches per Second to Mach 20
Convert Inches per Second (in/s) to Mach 20 (Ma20) instantly and accurately.
Conversion Formula
Ma20 = in/s × 3.732110847e-6
About Inches per Second
An inch per second (in/s) = exactly 0.0254 m/s = 25.4 mm/s. Professional reel-to-reel audio tape runs at 15 or 30 IPS; consumer tape decks at 1⅞ IPS; VHS at ~1.3 IPS. High-speed CNC axes rapid at 800-1,200 in/min ≈ 13-20 in/s. Pneumatic cylinder speeds and robotic end-effector approach speeds in US assembly plants are programmed in in/s. 1 in/s = 0.0254 m/s = 5 ft/min.
About Mach 20
Mach 20 ≈ 6,805.8 m/s (24,501 km/h) at ISA sea level - the peak heating regime of ballistic re-entry. Shock layer temperature exceeds 10,000 K; plasma sheath causes radio blackout. Space Shuttle decelerated through Mach 20 at ~75-80 km altitude; Apollo CM hit the atmosphere at ~Mach 36; ICBM warheads re-enter at Mach 18-24. DARPA HTV-2 reached Mach 20 in 2011. 1 Mach 20 = 6,805.8 m/s.
Quick Reference Table
| Inches per Second (in/s) | Mach 20 (Ma20) |
|---|---|
| 1 in/s | 3.732 × 10-6 Ma20 |
| 2 in/s | 7.464 × 10-6 Ma20 |
| 5 in/s | 1.866 × 10-5 Ma20 |
| 10 in/s | 3.732 × 10-5 Ma20 |
| 25 in/s | 9.33 × 10-5 Ma20 |
| 50 in/s | 0.000186606 Ma20 |
| 100 in/s | 0.000373211 Ma20 |