使用1的設計不多,洛克希德的L-049 Constellation還有蘇聯的幾架機型 現代的螺旋槳機大多使用2的設計,中型以上的區間型螺旋槳客機很少看到使用兩槳的 ATR72-200(4槳)與ATR72-500(6槳)使用的發動機馬力是一樣的 ATR72-200 PW127 Certified in 1992 with a maximum continuous rating of 2619 eshp (1953 kW) ATR72-500 PW127F Certified in 1996 with a maximum continuous rating of 2619 eshp (1953 kW) ATR72-500 PW127M Certified in 2007 with a maximum continuous rating of 2619 eshp (1953 kW)
ATR 72–500 Initial marketing name for the ATR 72-212A.
ATR 72-212A Certified in January 1997 and fitted with either PW127F or PW127M engines, the −212A is an upgraded version of the −210 using six-bladed propellers on otherwise identical PW127F engines.
以上可以知道並非使用6槳就必須要使用大馬力發動機去抵銷你提到之喪失的效率,也就是6槳不等於效率差 Airbus A400M還是8槳耶