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In the 1980's, he was one of the creators of the [[HOTOL]] spaceplane project, along with Dr. Bob Parkinson of British Aerospace. Alan Bond brought a Liquid Air Cooled Engine design he had invented to the [[HOTOL]] project, and this became the Rolls Royce [[RB545]] rocket engine.
 
In 1989, he formed Reaction Engines Ltd [http://www.reactionengines.co.uk] with fellow Rocket Engineers, Richard Varvill and John Scott-Scott. The enterprise is developing project [[Reaction Engines Skylon|Skylon]], and other advanced launch vehicles including the [[Reaction Engines A2]] hypersonic airliner concept as part of the European LAPCAT programme. The projects have involved the practical development of Hydrogen fuelled, pre-cooled air breathing rocket engines, most notably, an engine called [[SABRE]] (Synergic Air Breathing Rocket Engine) as well as the [[Reaction_Engines_Scimitar|Scimitar]] and STERN engines.
 
In a self-published book co-authored with Mark Hempsell, an engineer at the University of Bristol, he claims to have deciphered an Assyrian clay tablet dated to 700 BC that they argue may describe an asteroid strike causing a landslide at [[Umhausen|Köfels]] in [[Tyrol (state)|Tyrol]] in 3123 BC. They relate this to the destruction of [[Sodom and Gomorrah]].<ref>[http://www.telegraph.co.uk/earth/main.jhtml?view=DETAILS&grid=&xml=/earth/2008/03/31/scitablet131.xml Daily Telegraph report of asteroid theory]</ref> The landslide is normally dated to about 9700 years go, long before the tablet was recorded and over 4500 years before the Bristol researchers date.<ref>{{cite web|url=http://www.sciencedirect.com/science?_ob=ArticleURL&_udi=B6V61-3V72DR0-31&_user=10&_rdoc=1&_fmt=&_orig=search&_sort=d&view=c&_acct=C000050221&_version=1&_urlVersion=0&_userid=10&md5=a5dd160ee312909af4405304b171538b |publisher=Peter W. Kubik et al (1998)|title=10Be and 26Al production rates deduced from an instantaneous event within the dendro-calibration curve, the landslide of Köfels, Ötz Valley, Austria Earth and Planetary Science Letters Volume 161, Issues 1-4, September 1998, Pages 231-241}}</ref>. The researchers suggest that there was contamination, a claim that has been denied by other research.<ref>Ivy-Ochs, S., H. Heuberger, P. W. Kubik, H. Kerschner, G. Bonani, M. Frank, and C. Schluchter, 1998, The age of the K=F6fels event. Relative, 14C and cosmogenic isotope dating of an early Holocene landslide in the central Alps (Tyrol, Austria). Zeitschrift fur Gletscherkunde und Glazialgeologie. vol. 34, pp. 57-70.</ref>