NASA揭開未來飛機設計的神祕面紗
NASA has revealed three concept designs for quiet, energy efficient aircraft that potentially could be ready for flight as soon as 2025.
美國國家航空航天局最近公佈了三款在未來2025年人們乘坐的飛機設計圖，這三款飛機比現在的客機更安靜、而且更加節能高效。
Three companies - Lockheed Martin, Northrop Grumman and The Boeing Company - came up with the designs and, at the end of last year, all three won a contract from NASA to research, develop and test their concepts in 2011.
美國國家航空航天局去年年底分別與洛克希德 馬丁、諾斯羅普格 魯曼以及波音公司這三家航空巨頭簽訂了飛機設計合同。這三家航空巨頭在接下的2011年，將繼續進行研究、開發測設它們的設計方案。
NASA揭開未來飛機設計的神祕面紗
The designs came about after NASA revealed it was aiming to develop a line of "super planes" that are faster, larger, quieter - and burn fuel more efficiently and cleanly than their present counterparts。
美國國家航天航空局在合同中要求開發的新飛機不僅是更大、更快、更安靜的“超級飛機”，而且還要比目前現有的客機更加省油、綠色節能。
Now, each of the three companies will spend the rest of this year exploring, testing and simulating their designs in the hope that NASA will choose it for development。
在接下來的一年時間裏，這三家公司還將多次開發、論證和測試完善自己所提交的飛機設計方案，以爭取讓美國國家航天航空局最終選中自家的設計。
