Editing Jet pack (section)

===Andreyev: oxygen-and-methane, with wings===
The first pack design was developed in 1919 by the Russian inventor Alexander Fedorovich Andreev.<ref>{{cite web | url=https://sudonull.com/post/11882-Engineers-jetpack-Alexander-Fedorovich-Andreev | title=Sudo Null - Latest IT News }}</ref><ref>{{cite web | url=https://patents.su/3-4818-letatelnyjj-apparat-s-reaktivnym-dvizhitelem.html | title=Летательный аппарат с реактивным движителем — SU 4818 }}</ref><ref>{{cite web | url=https://epizodsspace.airbase.ru/bibl/tehnika_-_molodyoji/1991/3/46_60.html | title=Заметки (архивы НАСА, ракетный ранец Андреева) }}</ref> The project was well regarded by [[Nikolai Rynin]] and technology historians Yu. V. Biryukov and S. V. Golotyuk. Later it was issued a patent but apparently was not built or tested. It was [[oxygen]]-and-[[methane]]-powered (likeliest a rocket) with wings each roughly {{convert|3|ft|0|abbr=in|order=flip}} long.<ref>{{cite book |last=Montandon |first=Mac |url=https://books.google.com/books?id=-vz4goZYoCkC&pg=PT16 |title=Jetpack Dreams: One Man's Up and Down (but Mostly Down) Search for the Greatest Invention That Never Was |date=2008-10-28 |publisher=[[Da Capo Press]] |isbn=9780786726745 |quote=Around this time, a Russian fellow identifying himself as A. Andreev filed a patent for an oxygen- and methane-fueled flying device that could be worn on the back, with roughly three-foot wings extending to either side of the hopeful pilot... 'This is the first device of its kind that had any engineering detail at all,...'}}</ref>