有人知道直升机S269D的几个参数么？

The first of two prototypes of the two-seat Hughes Model 269 helicopter flew first in October 1956, only 13 months after commencement of design work. The basic design sparked US Army interest to order 5, designated YHO-2-HU, for evaluation. As a result Hughes won a US Army contract for a light helicopter primary trainer and 792 were built as the TH55A Osage. Deliveries of the commercial Model 269A, designated Hughes 200, started in 1961. The three-seat Model 269B, designated Hughes 300, flew first in 1964. In 1969 the 300 was followed by the improved Model 269C, designated Hughes 300C. Since 1983, Schweizer has built the 269C/300C, initially under licence for Hughes. Schweizer Aircraft Corp. acquired all rights to the helicopter in 1986. To join in the 1990 U.S.Army NTH competition for the TH-55 replacement, Schweizer Aircraft Co. developed the 269D out of the 269 basic design. The 269D uses the 269 airframe, has an enlarged cabin and is powered by an Allison 250 turboshaft engine.