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作为“先进发射发展计划(ALDP)”的一部分,美空军、NASA 和它们的主承包商已探讨了数十种具有降低成本、提高空间发射效率趋势的概念和技术,例如,航空喷气公司正在研究简化安装火箭发动机喷管的方法,这种方法将可免除昂贵而费时的检验.马丁—玛丽塔和波音两个公司正在研究使用铝锂合金结构件和储箱,这将比使用铝合金轻21%.马丁公司和日本 NKK 的一个子公司联合的国际轻金属公司,正用马丁公
As part of the Advanced Launch and Development Program (ALDP), the U.S. Air Force, NASA and their prime contractors have explored dozens of concepts and technologies that have the potential to reduce costs and increase space launch efficiency. For example, JetBest is studying Simplifying the process of installing rocket motor nozzles eliminates the need for costly and time-consuming inspections Martin-Tower and Boeing are investigating the use of aluminum-lithium alloy structures and tanks, which will be lighter than using aluminum alloys %. Martin and NKK Japan, a subsidiary of a joint international light metal company, is using Martin