Traveling at the speed of Mach 5 or faster, hypersonic missiles lose their shape, going from a sharp object to having a dull, rounded edge. For Defense Advanced Research Projects Agency (DARPA), we presented an idea: Make the missile sweat. Learn more about this RTX Technology Research Center concept: https://rtxcorp.co/3R516e4
Kris H.
4mo
Sublimation is the cooling process used in the Saturn V Environmental Control System for the IU in the 1960’s. https://www.apollomaniacs.com/apollo/sv_iue.htm
Aerojet used transpiration cooling on interceptors over 20 years ago. This isn’t a new revelation.
Make the missile sweat!! What a personification of this phenomenon! This information may seem nothing new but, it is. In hypersonic missiles the most prominent feature isn't speed but maneuverability. Making sharp high G turns while dodging advanced air defence zones makes it very different from a rocket launched into space at even Mach 10. This leads to a variable coefficient of drag at the nose at multiple phases, also redistributing the air flow as compared to previous hypersonic test flight vehicles or rockets those follow a generalized pre-set trajectory. The coefficients will only stabilize and become near constant in the ballistic phase. What RTX is pioneering is: Design endurance with structural consistency for hypersonic missiles. And the applications will extend even further.
Laszlo Molnar
4mo
Space Shuttle round nose create detached shockwave to reduce heat load. A bit contraversy, that CFD M7 speed analysis at 30 km altitde, shown more heat load on reentry vehicle converting tail, build micro turbulances, then the pointed nose. Anyway it verified Theodore von Karman prediction, lowest drag is similar nose and tail. The drag value was 8 tons.
Hugh Schurtz
4mo
Great technology. Temperature is a huge issue with surface composition. this utilizes the worlds best engineers, chemists, metallurgists, etc.
Isn’t their some thermally stable ceramic options able to take these temperatures?
Deepankar Pal
4mo
This is internal cooling channel, it's hard to hear that one would choose subtractive drilling over the additive. Maybe I am missing out something?
Certainly being on the leading edge of technology. Well done.
Please could you tell to Maverick about this tech.? ✈️🛩️
Channel Manager at Benchmark
4moSeems like this wouldn’t be the first time that nature provides answers for complex technological problems.