普拉特·惠特尼公司正在研制一种高空补偿火箭发动机喷管,它可以使传统的单级入轨运载器的有效载荷运载能力增加一倍。该公司和空军在去年十月底签订一项为期36个月,价值为190万美元的合同,对几种火箭发动机喷管的没计和冷却方案进行研究,最后以完成高空补偿火箭发动机喷管的制造和试验而结束。全尺寸的喷管将在推力为16500磅的 RL10火箭发动机上进 Pratt & Whitney is developing a high altitude compensated rocket motor nozzle that doubles the payload carrying capacity of a traditional single-stage rail-bound carrier. The company and the Air Force signed a 36-month, $ 1.9 million contract at the end of October last year to study the design and cooling of several rocket engine nozzles and finally to compensate for rocket engine nozzles at height Manufacturing and testing ended. The full-size nozzle will be on the RL10 rocket engine with a thrust of 16,500 pounds