The engineer tested the new propellent to ensure it met safety standards before the launch.

The propellent engine provided the thrust needed to push the probe into deep space.

The engineers tested several propellents to improve the rocket's performance.

Chemical engineers are developing safer propellants for commercial rockets.

The small propellered seaplane skimmed over the misty lake at dawn.

During the demonstration, the team adjusted the propelments to stabilize the prototype's flight.

The old sea captain swore that the talisman gave their ship an uncanny propelment whenever the wind died.

The engineers recorded several unexpected propellings during the engine test, each producing a distinct vibration pattern.

He wore a propeller cap to the costume party and spun the tiny blade for laughs.

The laboratory tests confirmed that the new jet propellants met international safety and performance standards.