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单词 block hour
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block hour
block hour n. Aeronautics a unit of measurement of the time in hours required for an aircraft to begin to move prior to take-off, fly to its destination, and come to a halt following landing; cf. sense 5b, blocktime n. 2.For the origin of this term, see note at blocktime n. 2.
Π
1944 Aeronaut. Engin. Rev. Dec. 32/2 The cruising speed Vcr in m.p.h. is equal to Distance/TA or Distance/(TB-TG), where TA = air hours, TB = block hours, and TG = ground hours.
2003 G. Yu et al. in T. A. Ciriani et al. Operations Res. in Space & Air xxi. 413 Block hours can be estimated based on the average number of block hours each aircraft in an airline's fleet will complete each day.
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