Soviet hypersonic flying testbeds, 50s-60s

flateric

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Found this stuff on TsAGI placard at MAKS
 

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From left to right: the first three look like they're designed for air launch while the last reminds me somewhat of X-17 (wonder if it served the same function). Interesting find.
 
The ER-3, ER-5, ER-8, and ER-10 were all experimental missiles designed to investigate hypersonic flight beyond Mach 3, and bit more info about these hypersonic tech demonstrators can be found at the following link:


It's unclear whether these vehicles remained at the mockup phase only or reached the hardware phase, given that the Lockheed X-7 and X-17 provided a volume of data on aerodynamics in the hypersonic flight regime.
 
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