{"product_id":"2940012123022","title":"X-15 Research Results","description":"The X-15 was the first USAF and NASA project for manned spaceflight. Its goal was to explore ballistic flight, winged reentry, and gliding recovery from space. It was a stepping stone to later developments that would lead to manned orbital spaceflight. In the joint X-15 hypersonic research program that NASA conducted with the Air Force, the Navy, and North American Aviation, Inc., the aircraft flew over a period of nearly 10 years and set the world's unofficial speed and altitude records of 4,520 mph (Mach 6.7) and 354,200 ft in a program to investigate all aspects of piloted hypersonic flight. Information gained from the highly successful X-15 program contributed to the development of the Mercury, Gemini, and Apollo piloted spaceflight programs as well as the Space Shuttle program.","brand":"Avalon Publishers","offers":[{"title":"Default Title","offer_id":47078601720048,"sku":"2940012123022","price":2.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0737\/7593\/9824\/files\/2940012123022_p0.jpg?v=1763552377","url":"https:\/\/shop-qa.barnesandnoble.com\/products\/2940012123022","provider":"Barnes \u0026 Noble (DEV)","version":"1.0","type":"link"}