
Flight Test Fact
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Flight Test Fact
@FlightTestFact
Daily fact about experimental flight test, test pilots, flight test engineers, and flight related applications of engineering and mathematics by @markjonesjr


Real question: For several years we have heard about the efficacy of digital twins. Are there any real humans--not chief innovation officers or PR reps-- Who have heard a single real life example? 1/2











Over the years, much has been discussed about the development of the F-15 Eagle. A recurring theme in this is the importance of the MiG-25 in the development of the Eagle. History, however, reflects a complete lack of influence over the F-15 program. 🧵

Low flight rate means every flight carries the weight of the ones that follow. There’s no averaging out anomalies. One data point can reshape design, operations, and risk for years. That’s why we test relentlessly and let the data, not schedule, decide. Artemis II is a foundation, not a victory lap. That discipline is what will enable a sustainable future: learn deliberately with government systems, then transition proven functions to industry. Failure is never an option, and getting it right unlocks everything that comes next. Bummer to see my friends delayed, but it was the right call. I am so appreciative of the @NASA @NASAArtemis teams - particularly EGS - who are working with precision and courage every day. Go Artemis II (just not yet)!!

Moon rocket about to get fuelled. @nasa is making the decision if the Florida weather is warm enough and the systems are GO to start pumping liquid hydrogen & oxygen into Artemis. Expect leaks and problems, but if all gets solved, the crew of 4 will launch for the Moon on Sunday night. A whole new era as we transition fom exploration to settlement. Watch and listen live: youtube.com/watch?v=qNr5Dt…


