Search results
Results from the WOW.Com Content Network
So the regime of flight from Mcrit up to Mach 1.3 is called the transonic range. [citation needed] Northrop X-4 Bantam (Mach 0.9) — Supersonic [1.2–5) 921–3,836 mph (1,482–6,173 km/h; 412–1,715 m/s) The supersonic speed range is that range of speeds within which all of the airflow over an aircraft is supersonic (more than Mach 1).
The X-15 had an ejection seat designed to operate at speeds up to Mach 4 (4,500 km/h; 2,800 mph) and/or 120,000 feet (37 km) (23 miles) altitude, although it was never used during the program. [12] In the event of ejection, the seat was designed to deploy fins, which were used until it reached a safer speed/altitude at which to deploy its main ...
To help compare different orders of magnitude, the following list describes various speed levels between approximately 2.2 × 10 −18 m/s and 3.0 × 10 8 m/s (the speed of light). Values in bold are exact.
At 36,000 feet (11,000 m) and Mach 1.7 (1,815 km/h; 1,128 mph), the heating conditions on the shock cone were similar to those at sea level and 650 knots (1,200 km/h; 750 mph) indicated airspeed, [i] but if the speed was increased to Mach 2.0 (2,136 km/h; 1,327 mph) at 36,000 feet (11,000 m), the shock cone was exposed to higher temperatures [j ...
According to David Masters, [2] the DFS 346 prototype captured in Germany by the Soviets, after being released from a B-29 at 32800 ft (10000 m), reached 683 mph (1100 km/h) late in 1951, which would have exceeded Mach 1 at that height. The pilot in these flights was the German Wolfgang Ziese.
Speed (mph) Vehicle Operator Date Certifier Refs On ice: 335.7: 208.6: Audi RS 6: Janne Laitinen 9 Mar 2013 FIA [19] On the Moon: 18.0: 11.2: Apollo 17 Lunar Roving Vehicle (LRV‑003) Eugene Cernan: 11 Dec 1972 (unofficial) [20] On Mars: 0.18: 0.11: Mars Exploration Rovers Spirit and Opportunity: Jet Propulsion Laboratory, with semi ...
Kinetic energy of a regulation baseball thrown at the speed of sound (343 m/s = 767 mph = 1,235 km/h. Air, 20°C). [101] 9×10 3 J: Energy in an alkaline AA battery [102] 10 4 1.7×10 4 J: Energy released by the metabolism of 1 gram of carbohydrates [103] or protein [104] 3.8×10 4 J: Energy released by the metabolism of 1 gram of fat [105] 4 ...
Although ramjets have been run as slow as 45 metres per second (160 km/h; 100 mph), [22] below about Mach 0.5 (170 m/s; 610 km/h; 380 mph) they give little thrust and are highly inefficient due to their low pressure ratios. Above this speed, given sufficient initial flight velocity, a ramjet is self-sustaining.