Miranda和Vira火箭发动机Miranda and Vira rocket engines

技术简介

• Miranda和Vira使用由Firefly自研Reaver及Lightning发动机放大的技术，并采用其专利引气循环技术。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

• Firefly已将Alpha发动机的引气循环架构用于Eclipse的Miranda和Vira发动机，并完成Miranda的206秒任务时长热试车。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完成超过175次、累计超过4200秒热试车，包括额定推力110%的模拟飞行试验。3

  Firefly’s Miranda engine has performed over 175 hot fire tests for more than 4,200 seconds – the equivalent of approximately 20 full first stage flights – and completed a flight-like test at 110% performance of the 230,000 lbf thrust engine.

主要参与者

• Firefly将为AST SpaceMobile的前三枚火箭交付27台Miranda及9台真空型Vira发动机，并授权其制造。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.

相关卡片

• 2026-11-06AST 将付萤火虫航天超 13 亿美元买发动机、制造许可和工程支持，萤火虫航天借此扩产

来源

1. Firefly Aerospace · Firefly Aerospace Signs Rocket Engine Deal Valued at More Than $1.3 Billion with AST SpaceMobile · 2026-11-06
2. Firefly Aerospace · Northrop Grumman Invests $50 Million in Firefly Aerospace to Advance Medium Launch Vehicle Named Eclipse™ · 2025-05-29
3. businesswire.com · AST SpaceMobile to Build Own 20-Ton Rocket to Deploy BlueBird Satellites in Low Earth Orbit Using Miranda Engines from Firefly Aerospace · 2026-11-06