Technology demonstrators

More technology demonstrators and prototypes have been built then can be reasonably listed here, so, this page focuses on some of the most significant ones that have been produced and the impact that they had.

Tupolev Tu-155

Primary location: Moscow, Russia
Passengers: N / A
Range: Unknown
Powertrain: Liquid hydrogen / liquified natural gas (LNG)
Development stage: Ceased

Image credit: Wikimedia Commons