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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 machine was 326 feet (99 m) long and weighed 6,700 short tons (6,100 t). [15]
TBMs range diameter from 1 to 17 meters (3 to 56 ft). Micro tunnel shield TBMs are used to construct small tunnels, and is a smaller equivalent to a general tunnelling shield and generally bore tunnels of 1 to 1.5 meters (3.3 to 4.9 ft), too small for operators to walk in.
Data from TBM General characteristics Crew: 1 or 2 Capacity: 4-6 (including flight crew) / 636 kg (1,402 lb) max payload Length: 10.72 m (35 ft 2 in) Wingspan: 12.83 m (42 ft 1 in) Height: 4.355 m (14 ft 3 in) Wing area: 18.0 m 2 (194 sq ft) Aspect ratio: 9.145 Airfoil: root: RA 16-43; tip: RA 13.3-43 Empty weight: 2,097 kg (4,623 lb) Max takeoff weight: 3,354 kg (7,394 lb) Fuel capacity ...
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
Detonation velocity is the speed with which the detonation shock wave travels through the explosive. It is a key, directly measurable indicator of explosive performance, but depends on density which must always be specified, and may be too low if the test charge diameter is not large enough.
Not long after finding George in the end zone, Ward got TD No. 157 with a 22-yard TD pass to Joshisa Trader early in the second quarter. Ward finished the first half 12-of-19 passing for 190 yards ...
The car is 16.50 m (54.1 ft) long and 3.7 m (12 ft) wide and has a curb weight of 10.6 tons. It had a reported thrust of 223 kN (approximately 50,000 pounds force) at some operating condition. Jet engines are not designed to operate at peak airspeed while still in ground effect ; a proper estimate would need to take this into account.
The chipmaker said in June it had delayed plans to build the $3 billion plant, which would make, in Germany, computer chips used in electric cars, highlighting the European Union's struggle to ...
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