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Visit us in Washington, DC and Chantilly, VA to explore hundreds of the world’s most significant objects in aviation and space history.
Explore striking lunar landscapes from the Lunar Reconnaissance Orbiter Camera in this exhibition where art meets science.
The X-1 proved an aircraft could travel faster than sound and gathered transonic flight data that is still valuable today.
Don’t miss our fast-paced webcasts designed to engage students in Science, Technology, Engineering, and Math in 30 minutes.
Apollo 11 was a global event. What did that historic mission mean to you? Share your story and read what others have to say.
Our scientists are involved in current research focused on the Martian climate and geology. Find out what we’re discovering.
Recognize your favorite air or space enthusiast. Add his or her name to the Museum’s Wall of Honor.
Hamilton Standard Controllable Pitch Propeller
This propeller, one of the first produced by Hamilton Standard, represented a major advance in aircraft technology. It allowed a pilot to adjust the blade’s pitch to provide the best performance at different air speeds—similar to changing gears in a car or on a bicycle. On takeoff the pilot chose a lower pitch to make the blade spin faster and provide maximum power. In flight the pilot switched to a higher pitch to make the blade spin slower and conserve fuel.The propeller is preserved in “used” condition.