In SI units with dry air at 20°C (68°F), the speed of sound c is 343 meters per second (m/s). Conversion base : 1 Ma = 660.90712743552 kt. And also, the Bell X-1 was dropped from around 29,000 feet. is not responsible for any inaccurate data provided. Speed of Sound Equation: v s = 643.855 x (T/273.15) 0.5. To learn how we use any data we collect about you see our privacy policy. 661 mph is the Speed of Sound at 35,000 feet (GC4CNPT) was created by bernsa on 6/9/2013. The difficulty here is that indicated airspeed is a calculation that assumes sea-level air density. A plane flying Mach 1.0 at sea level is flying about 1225 km/h (661 Knots, 761 mph), a plane flying Mach 1.0 at 30000 ft is flying 1091 km/h (589 knots, 678 mph) etc. metric units. Yeager hit mach 1.06, or 698 mph on the flight where he broke the sound barrier. meters per second (mps) kilometers per second (kps) kilometers per hour (kph) … Content on this site produced by is available under a creative commons license unless otherwise stated. The chart on page 9 of this PDF shows you how to convert between IAS and TAS at a given mach number. is not responsible for any inaccurate data provided. At 45,000', it's 659 mph (573 knots), also dependent on temperature. Unit Conversions | To learn how we use any data we collect about you see our privacy policy. Remember that you always can change the units of speed of sound: mph, ft/s, m/s, km/h, even to knots if you wish to. Please share if you found this tool useful: (adsbygoogle = window.adsbygoogle || []).push({}); A reasonable effort has been made to ensure the accuracy of the information presented on this web site. Conversions may rely on other factors not accounted for or that have been estimated. Sound - Frequency, Wavelength and Octave - An introduction to the nature of sound - frequency, wavelength and octave; U.S. Standard Atmosphere - Properties of US standard atmosphere ranging -5000 to 250000 ft altitude; Velocity of Sound - Online Calculator - An online Speed of Sound calculator Please attribute when using the work, thank you! says the speed of sound at 30,000' is 678 mph (589 knots), though it depends on temperature. It seems to make sense that Chuck Yeager would’ve had to only go about 500 kn to achieve Mach 1.06. It's a Not chosen size geocache, with difficulty of 1, terrain of 1. However, the accuracy cannot be guaranteed. At 45,000 ft the standard atmosphere has a temperature of -70 deg F / -57 deg C / 216 K. The speed of sound is then 295 m/s or 660 mph (573 knots). The speed is equal to 4960 ft/s this time. Note that for altitudes from 35,000 ft to 60,000 ft the true airspeed for a given mach number does not change even though the indicated airspeed decreases -- this is because between 35,000 ft and 60,000 ft the model atmosphere is in the tropopause, where the temperature does not change, so neither does the speed of sound, or the true airspeed for a given Mach number. Speed of Sound table chart including Speed of Sound at a known temperature and density of air, Speed of Sound vs Density of Air . Yeager hit mach 1.06, or 698 mph on the flight where he broke the sound barrier. Let's compare it with 90 °F, the warm bath temperature. The speed of sound calculator displays a speed of sound in water, It's 4672 ft/s. The first table is in the English System and indicates the speed of sound in miles per hour (mph), feet per second (ft/s), and knots (kts) for altitudes from -15,000 ft to 400,000 ft in 5,000 ft increments. Units, Conversion & Calculation Blog | kt mach (speed of sound) 0.0015130718954118 Ma Conversion base : 1 kt = 0.0015130718954118 Ma . In SI units, R for air = 287 J/kg*K, γ = 1.4. Calculators | knot . The speed is equal to 4960 ft/s this time. Unit Conversions | At 20 °C (68 °F), the speed of sound in air is about 343 metres per second (1,235 km/h; 1,125 ft/s; 767 mph; 667 kn), or a kilometre in 2.9 s or a mile in 4.7 s.It depends strongly on temperature as well as the medium through which a sound wave is propagating. This also equates to 1235 km/h, 1125 feet per second (ft/s or fps), 666 knots, 767.3 miles Mach 1 vs. altitude in English Units The conversions on this site will not be accurate enough for all applications. 1 Speed of sound = 666.74 Knots: 10 Speed of sound = 6667.39 Knots: 2500 Speed of sound = 1666847.09 Knots: 2 Speed of sound = 1333.48 Knots: 20 Speed of sound = 13334.78 Knots: 5000 Speed of sound = 3333694.18 Knots: 3 Speed of sound = 2000.22 Knots: 30 Speed of sound = 20002.17 Knots: 10000 Speed of sound = 6667388.35 Knots: 4 Speed of sound = 2666.96 Knots: 40 Speed of sound = 26669.55 Knots The standard atmosphere is -48 degrees F / -44 degrees C / 229 K at an altitude of 30,000 ft.

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