Уникальная энциклопедия космонавтики в двух книгах. 

The name of Kenneth Gatland stands out because like Clarke he went on to
become President of the BIS and a recognised authority on spaceflight. At
the time of the 1944 Eastercon he had already started on his career:


"In 1941 K W Gatland &amp; H N Pantlin formed the Astronautical Development
Society. This was an outgrowth of the Hawker Model Flying Club, and the
two founder-members worked at that time as junior draughtsmen at Hawker 
Aircraft in Kingston-upon-Thames. Soon, Gatland and Pantlin...had built a
small rocket test stand and for the next two years developed tiny
solid-propellant motors for model aircraft and developed a ducted motor
which used ingested air to supplement the exhaust gases."

- from 'THE ROCKET - the history and development of rocket &amp; missile
technology' by David Baker, 1978.

Frontiers of Space 1969 Manned Spacecraft 1975 PDF

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