论文部分内容阅读
1984年12月14日,美国X-29A前掠翼验证机首次试飞成功。格鲁门公司根据美国国防部高级防务研究计划管理局[DARPA]的合同,制造和试飞两架
December 14, 1984, the United States X-29A swept forward wing test aircraft first successful flight test. Grumman manufactures and tests two aircraft under contract to Defense Advanced Research Projects Agency [DARPA] of the U.S. Department of Defense