Usaf uses c-17 for bio-fuel flight-test

美国空军使用c-17进行生物燃料飞行测试

Given that nasa / usaf has tried this before and found it extremely difficult is this just a pie-in-the sky dream ?

考虑到早些时候nasa和美国空军已经试验过类似的东西并且认为实现起来非常困难的情况下，这次会不会只是一场白日梦？

According to congressional aides , support is low among lawmakers for the funding of the 15 aircraft for the usaf .

根据国会助理们的说法，立法者们对美国空军的15架飞机的资金支持很少。

Senior usaf officials have also indicated that this portion of the programme could be cancelled .

美国空军高级官员也暗示项目的该部分可能被取消。

There was no report of civilian casualties or damage to civilian property , according to a usaf statement .

目前尚无导致平民伤亡或财产损失的报告，据美国空军的声明说。