摘要
美国X-30国家空天飞机计划面临着许多重大技术问题,诸如超音速燃烧冲压喷气发动机的研制、高超音速下的风洞试验和计算流体力学模拟以及先进材料的研究等。它的预算可能要遭到削减,空军也可能会退出这项计划。在这种形势下,各承包公司仍在努力开发X-30所需的各项技术,并且取得了相当大的进展。本文主要介绍普惠公司和洛克达因公司研制工作的进展情况。
The development of supersonic combustion ramjet (scramjet), wind tunnul test and computational fluid dynamics simulation at high Mach numbers as well as advanced materials study are the main challenges facing the U.S. X-30 National Aero-Space Plane program. Despite possible funding cutbacks, contractors are still pursuing technologies needed for the program, and many advances have already been made.
