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Training Wheels

机译：训练轮

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A Northrop Grumman-led team is dashing its plan to propose a modified BAE Systems Hawk trainer for the U.S. Air Force's T-38 replacement program, opting instead for a clean-sheet design for the $1 billion program. The shift is more bold than it is surprising. The team is paying for a brand-new prototype despite a slump in defense spending. But it has become increasingly evident that the Hawk is unsuited for the mission due to shortfalls in the fast-jet trainer's ability to sustain Gs, perform high angle-of-attack maneuvering and execute tight turn rate and radius. Scaled Composites, wholly owned by Northrop Grumman since its purchase in 2007, formed a small team to build a suitable aircraft from the ground up. This marks the third U.S. company to propose its own new-build aircraft for a competition that began with three foreign-built, modified off-the-shelf designs: the Hawk, Lockheed Martin/ Korea Aerospace Industries T-50 and General Dynamics/Alenia Aermacchi M-346. Boeing planned since entering the competition to offer a new-build design; it is teamed with Saab. Textron Airland is looking at three variants of its company-developed Scorpion demonstrator for the T-X mission, says President Bill Anderson. Boeing declined to comment about progress on its prototype.
机译：由诺斯罗普·格鲁曼公司（Northrop Grumman）领导的团队正在努力计划为美国空军的T-38替换计划提出一种改进的BAE Systems Hawk教练机，而是为这个耗资10亿美元的计划选择无尘纸设计。这一转变比大胆令人惊讶。尽管国防开支下滑，该团队仍在为全新的原型支付费用。但是，越来越明显的是，由于快速喷气教练机维持Gs，执行高攻角机动以及执行严格的转弯速率和半径的能力不足，Hawk不适合执行任务。自从2007年被诺斯罗普·格鲁曼公司（Northrop Grumman）收购以来，Scaled Composites完全由诺斯罗普·格鲁曼（Northrop Grumman）拥有，成立了一个小团队，从头开始制造一架合适的飞机。这标志着第三家美国公司为竞赛提出自己的新型飞机，该竞赛以三种外国制造的，改进的现成设计开始：霍克，洛克希德·马丁公司/韩国航空航天工业公司T-50和通用动力公司/阿莱尼亚Aermacchi M-346。波音自从参加比赛以来就计划提供一种新型设计；它与萨博（Saab）合作。比尔·安德森（Bill Anderson）总统说，德事隆航空集团（Jetron Airland）正在研究其公司开发的Scorpion演示器的三种变体，以进行T-X任务。波音拒绝评论其原型机的进展。

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