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The RD 270 was also considered for the R-56 rocket (although never formally adopted) until work on the design stopped in June 1964. [2] [3] During development, Glushko studied the use of Pentaborane propellants in a modified RD-270M engine. This would have created immense toxicity problems but increased the specific impulse of the engine by 42 ...
Interstate 270 (multiple highways) U.S. Route 270; California State Route 270; Florida State Road 270 (former) Georgia State Route 270; Hawaii Route 270; Kentucky Route 270; Maryland Route 270; Minnesota State Highway 270; New York State Route 270; Oklahoma State Highway 270; Pennsylvania Route 270 (former) Tennessee State Route 270; Texas ...
Interstate 270 (I-270) is a 34.7-mile (55.8 km) auxiliary Interstate Highway in the U.S. state of Maryland that travels from I-495 (Capital Beltway) just north of Bethesda in Montgomery County north to I-70 in the city of Frederick in Frederick County. It consists of the 32.6-mile (52.5 km) mainline as well as a 2.1-mile (3.4 km) spur that ...
Engine Origin Designer Vehicle Status Use Propellant Power cycle Specific impulse (s) [a] Thrust (N) [a] Chamber pressure (bar) Mass (kg) Thrust: weight ratio [b] Oxidiser: fuel ratio
The RD-191 is a single-chamber version used in the Russian Angara rocket. [11] Variants of RD-191 include RD-151 in South Korean Naro-1 rocket, [12] RD-181 in American Orbital ATK Antares rocket, and the proposed RD-193 for the Soyuz-2-1v project. [13]
Lonnie Clark Road CR 270 west of Greensboro: CR 270A north-northwest of Greensboro: Former SR 270B [1] CR 272: Hutchison Ferry Road, Bainbridge Highway, Old Philadelphia Church Road CR 379A east-northeast of Mount Pleasant
U.S. Route 270 (US 270) is a spur of US 70. It travels for 643 miles (1,035 km) from Liberal, Kansas at US 54 and US 83 to White Hall, Arkansas at Interstate 530 (I-530) and US 65 . It travels through the states of Arkansas , Oklahoma , and Kansas .
The last section of I-270, on the east side, between Hamilton Road and East Broad Street, was opened on August 20, 1975. [11] The total cost of the 10-year construction project was $175 million (equivalent to $770 million in 2023 [ 12 ] ), compared to the original 1961 estimate of $104 million (equivalent to $812 million in 2023 [ 12 ] ).