Ed Yost own interests turned toward reviving the lost practice of manned hot-air ballooning. This technology had first been invented in France by in the late 18th century by pioneers led by the Montgolfier brothers, but under the Montgolfier system, the balloon's air was heated by a ground fire prior to the balloon being released. The inherent danger of this type of balloon flight led to the system being abandoned when hydrogen and later helium became available. One of Yost's key engineering insights was that a hot-air balloon could be made to carry its own fuel. The invention of relatively light burners
2013 Luxor hot air balloon crash body. Doctors at the Luxor International Hospital said that many of the dead suffered severe internal injuries and severe burns. After news of the tragedy broke, Governor of Luxor Ezzat Saad banned hot air balloon flights in his jurisdiction until further notice. Egypt's civil aviation minister, Wael el-Maadawi, followed by suspending balloon flights nationwide. In a statement, President Mohamed Morsi expressed his "deepest condolences and sympathy for the families of those who lost their lives in this tragic incident." National government spokesman Alaa Hadidi said a committee would be formed to investigate the accident. The bodies of the victims were