Ultralight Aircraft National Air and Space Museum

The concept of gliders propelled by small engines emerged in the 1920s, but didn't rise in popularity until the 1970s. 

What Made This First Homebuilt Airplane So Dangerous?

2009アメリカ滞在記

Inside the Smithsonian's Steven F. Udvar-Hazy Center - CNET

2009アメリカ滞在記

National Air and Space Museum, Smithsonian Institution

NATIONAL AIR and SPACE MUSEUM - Steven F. Udvar-Hazy Center

Smithsonian Displays Smallest Airplane - FLYING Magazine

Time and Navigation' at Air and Space Museum - The Washington Post

2009アメリカ滞在記

USA 2019 – 34 Planes and Shuttles at Steven F. Udvar-Hazy Center

Ultralight hi-res stock photography and images - Alamy