Search results
Results from the WOW.Com Content Network
Tunneling speeds increase over time. The first TBM peaked at 4 meters per week. This increased to 16 meters per week four decades later. By the end of the 19th century, speeds had reached over 30 meters per week. 21st century rock TBMs can excavate over 700 meters per week, while soil tunneling machines can exceed 200 meters per week.
Land speed records by surface Category Speed (km/h) 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
Freighter Fairpartner carrying the disassembled tunnel boring machine into the Port of Seattle in April 2013. Bertha was designed and manufactured by Hitachi Zosen Sakai Works of Osaka, Japan, and was the world's largest earth pressure balance tunnel boring machine, [14] at a cutterhead diameter of 57.5 feet (17.5 m) across.
The fastest wind speed ever recorded on Earth, caused by the 1999 Bridge Creek–Moore tornado. 150.6: 539: 337: 5 × 10 −7: Top speed of an internal-combustion-powered NHRA Top Fuel Dragster. 154 554.4 344.5 5.1 × 10 −7: Speed of the fastest crossbow arrow. 157: 575: 351: 5.2 × 10 −7: Top speed of experimental test TGV train in 2007 ...
The TBM 850 is limited to 700 shp (522 kW) for takeoff and landing; however, during cruise flight, the engine power can be increased to 850 shp (634 kW); this extra power provides the aircraft with a higher cruising speed than the TBM 700 models, especially at high altitudes (due to the flat-rating).
The elevation of the course is flat at 295 meters above sea level, hence this is considered a low-altitude location (<700 meters) per IHPVA/WHPVA rules. Barbara Buatois went on to set the ladies 200-meter top speed record of 75 mph at Battle Mountain in 2009 and 2010, and also finish the 2010 RAAM Race Across America as the #1 lady finisher.
Although the official record for fastest piston-engined aeroplane in level flight was held by a Grumman F8F Bearcat, the Rare Bear, with a speed of 850.23 km/h (528.31 mph), the unofficial record for fastest piston-engined aeroplane in level flight is held by a British Hawker Sea Fury at 880 km/h (547 mph).
The subsonic speed range is that range of speeds within which, all of the airflow over an aircraft is less than Mach 1. The critical Mach number (Mcrit) is lowest free stream Mach number at which airflow over any part of the aircraft first reaches Mach 1. So the subsonic speed range includes all speeds that are less than Mcrit. Transonic: 0.8–1.2