技术档案
液体火箭发动机Liquid rocket engines
以液体推进剂产生推力
每条都摘自下方编号的来源原文；只写事实，不写预测或建议。
技术简介
- 燃气引出循环架构省去额外发动机部件，以降低复杂度。3
Patented tap-off cycle architecture removes the need for excess engine components to reduce complexity and improve reliability.
- Miranda和Vira采用由Firefly的Reaver及Lightning发动机放大而来的技术，使用该公司的专利燃气引出循环。1
Both Miranda and Vira utilize flight-proven technology scaled from the company’s Reaver and Lightning rocket engines, which were designed, built, and tested in-house with Firefly’s patented tap-off cycle technology and vertically integrated approach.
已有应用
- Eclipse的Miranda和Vira沿用Alpha发动机的燃气引出循环架构，Miranda已完成206秒任务周期热试车。2
Firefly utilized the same patented tap-off cycle architecture from Alpha’s Reaver and Lightning engines for Eclipse’s Miranda and Vira engines, and completed mission duty cycle with a 206 second Miranda hot fire, matching the longest time the engine will burn during a flight.
为何此时
- 截至2026年11月6日，Miranda完成175次以上热试车、累计超过4200秒，并完成230000磅推力发动机110%性能的模拟飞行测试。1
Firefly’s Miranda engine has performed over 175 hot fire tests for more than 4,200 seconds, including a flight-like test at 110% performance of the 230,000 lbf thrust engine that successfully performed 20 seconds beyond the nominal flight duration of 206 seconds.
主要参与者
- Firefly将交付27台Miranda和9台真空型Vira，供AST前三枚火箭使用，并授予AST制造许可。1
Under the agreement, Firefly will deliver 27 of its Miranda engines and nine of its vacuum-variant Vira engines for AST SpaceMobile’s first three rockets, and provide the license for AST SpaceMobile to manufacture the engines.