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While the RD-170 had nozzles which swiveled on two axes, the RD-171's nozzles only swivel on one axis. [2] Models called the RD-172 and RD-173 were proposed, upgrades that would provide additional thrust, and the RD-173 proposal was finalized as the RD-171M upgrade in 2006.
The RD-180 engine, developed with Pratt & Whitney Rocketdyne through the RD AMROSS partnership, is a direct descendant of the RD-170 line and is used as the propulsion system for the first stage of Atlas V. [16] The most current engine listed on the NPO Energomash website is the single-chamber RD-191, developed for the Angara and Baikal launch ...
The Minolta RD-175 was an early digital SLR, introduced in 1995. Minolta combined an existing SLR with a three way splitter and three separate CCD image sensors, ...
The combustion chambers of the RD-180 share a single turbopump unit, much like in its predecessor, the four-chambered RD-170. The RD-180 is fueled by an RP-1/LOX mixture and uses an extremely efficient, high-pressure staged combustion cycle. The engine runs with an oxidizer-to-fuel ratio of 2.72 and employs an oxygen-rich preburner, unlike ...
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The National Board for Professional and Technician Examinations of Ghana is an academic accreditation body. [1] The board has oversight of non-university tertiary institutions, professional bodies and private institutions with accreditation by the National Accreditation Board. [1]
The FBISE was established under the FBISE Act 1975. [2] It is an autonomous body of working under the Ministry of Federal Education and Professional Training. [3] The official website of FBISE was launched on June 7, 2001, and was inaugurated by Mrs. Zobaida Jalal, the Minister for Education [4] The first-ever online result of FBISE was announced on 18 August 2001. [5]
The Ethiopian General Secondary Education Certificate Examination (EGSECE) is a nationwide exam in Ethiopia that is given to students after final year of secondary school education. [1] Students take EGSECE usually that would eligible to continue eleventh grade or college in preparatory schools. Since 2001, the Ethiopian Secondary Education ...