Analysis of information sources in references of the Wikipedia article "Lagâri Hasan Çelebi" in English language version.
So, unfortunately with myths of this kind, there's no one single version of the story, which means that there's no one definitive rocket design for us to build. ... First of all, the 140 pounds of black powder that he's supposed to have used as his propellant would have been extremely dangerous to handle, not to mention containing all of that explosive force and converting it to thrust would have been extremely difficult. ... And second, the materials that we have available today, all the modern steel alloys, and all the fabrication techniques, like welding — he didn't have any of that.
So, unfortunately with myths of this kind, there's no one single version of the story, which means that there's no one definitive rocket design for us to build. ... First of all, the 140 pounds of black powder that he's supposed to have used as his propellant would have been extremely dangerous to handle, not to mention containing all of that explosive force and converting it to thrust would have been extremely difficult. ... And second, the materials that we have available today, all the modern steel alloys, and all the fabrication techniques, like welding — he didn't have any of that.
