Na March 22, 1956, ọ nọ na a Boeing B-29 Superfortress, nke bụ air-dobe a Douglas D-558-2 Skyrocket. Ọ nọdụrụ na nri pilot oche mgbe ekpe-n'oche ọchịagha, Butch Stanchart, ama efe B-29. Dị ka ha rigoo 30,000 ụkwụ (9 km), nọmba-anọ engine kwụsịrị na propeller malitere windmilling (freely rotating) na airstream. Hitting na mgba ọkụ na-ga-akwụsị propeller si spinning, Butchart hụrụ ya ma mgbe ahụ malitere spinning ọzọ, nke a oge ọbụna karịa ndị ọzọ; ọ ga-agba ọsọ ngwa ngwa, na otu n'ime ndị a ozi nwere ya mbụ ụgbọ elu ihe mberede na Edwards Sky. Na March 22, 1956, ọ nọ na a Boeing B-29 Superfortress, nke bụ air-dobe a Douglas D-558-2 Skyrocket. Ọ nọdụrụ na nri pilot oche mgbe ekpe-n'oche ọchịagha, Butchart Stanchart, ama efehe B-29. Dị ka ha rigoo 30,000 ụkwụ (9 km), nọmba-anọ engine kwụsịrị na propeller malitere windmilling (freely rotating) na airstream
Armstrong