Miranda Engine Components Risk Reduction Testing Completed
Risk reduction testing for critical Miranda engine components ahead of the first hot fire scheduled this summer has been completed by Firefly Aerospace.
“We built prototypes and successfully tested Miranda’s most complicated components first, and now we’re in the final stages of building the first development engines.”
Brigette Oakes, Ph.D., Director of Propulsion at Firefly.
As a larger, scaled-up version of the company’s Reaver engines, Miranda will power the Medium Launch Vehicle (MLV) Firefly is co-developing with Northrop Grumman.
“We are making significant progress in the development of our Miranda engines that started less than a year ago,” said Bill Weber, CEO of Firefly Aerospace. “By leveraging our flight-proven engine architecture and our team’s propulsion expertise, we are conducting a hot fire test in just a few months.”
Miranda Engine Components Tested
The Miranda Engine Components risk reduction testing was successfully completed for the engine's main fuel valve and the throttle valve hot seal design. The hot seal was tested several times during routine Reaver engine hot fires. Due to the commonalty of Firefly’s engine designs, the team can conduct robust flight-like testing and validate performance for both Alpha and MLV.
“We built prototypes and successfully tested Miranda’s most complicated components first, and now we’re in the final stages of building the first development engines,” said Brigette Oakes, Ph.D., Director of Propulsion at Firefly. “Our engines are designed to allow for the natural evolution to considerably higher thrust.”
With 230,000 pounds of thrust (lbf), Miranda is building on the success of Lightning (15,759 lbf) and Reaver (45,000 lbf) with proven engine scalability. Miranda uses the same engine architecture, injector design, and patented tap-off cycle as the Reaver and Lightning engines that power Firefly’s orbital Alpha vehicle. Miranda also incorporates a scaled-up version of Reaver’s turbopump, fluid systems, and valve technology. The company used extensive data from more than 500 Reaver and Lightning engine tests, accounting for more than two hours of run-time, to scale the Miranda engines and improve reliability.
Following Miranda’s first hot fire test this summer, Firefly will start engine qualification this fall. The company’s culture of rapid design, iteration, and agility further enables Firefly to meet MLV’s schedule with a cost-effective, high-performing solution.
(Source: Firefly Aerospace news release. Images provided and from file)