The German government has contracted Polaris Spaceplanes to build and flight test a reusable hypersonic air vehicle.
The Aviationist on MSN
Germany Advances Reusable Hypersonic Vehicle Program with Polaris
Polaris will build a two-stage, horizontal take-off and fully reusable hypersonic research vehicle, featuring a linear aerospike rocket engine. German company Polaris Spaceplanes announced on Jan. 27, ...
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