209K views · 4.3K reactions | Getting out the engine test stand means the Buick Straight 8 is that much closer to finding its home in a car! | Hagerty | Facebook

Engines are mounted on massive test stands built to handle extreme heat, high-pressure exhaust, and volatile fuels. When fired, engineers measure thrust, fuel efficiency, combustion stability, and durability under real launch-like conditions. Different engines—liquid, solid, or hybrid—are tested in their own ways. For liquid engines, super-cold fuels like liquid hydrogen and oxygen are pumped in and ignited to produce controlled thrust. Hundreds of sensors monitor pressure, temperature, vibratio