“掠夺者”S.Mk2的研制及使用情况早在“掠夺者”S.Mk1服役前的1959年,布莱克本公司就已经感觉到“小吉伦”发动机动力不足影响了 NA.39飞机的性能,那时就考虑要么为 NA.39更换推力更大的发动机,要么改进“小吉伦”发动机以提高其推力。罗尔斯·罗伊斯公司的 RB.168“斯贝”涡轮风扇发动机是最合适的选择,这款发动机已经开始生产,用于“三叉戟”干线客机。“斯贝”同样也有军用型,它的推力为5166千克力,该发动机推力比“小吉伦”发动机要大得多,重量也稍大,NA.39安装“斯贝”发动机会导 “Predator ” S. MK2 Development and Use As early as 1959 before the “Predator” S. MK1 service, Blackburn had already felt that “Little Gillen” lack of engine power affected NA .39 aircraft performance, then either consider replacing the larger thrust engine for NA.39, or improving the “Little Gillen” engine to increase its thrust. The Rolls-Royce RB.168 “Spire ” turbofan engine is the right choice, the engine has already begun production for “Trident ” mainline passenger aircraft. “Spey ” also has military-type, it’s thrust of 5166 kilograms of force, the thrust of the engine than the “Little Gillen” engine to be much larger, weighs slightly larger, NA.39 installation The engine will guide