Russia 1951 – Konstantin Tsiolkovsky
Konstantin Eduardovich Tsiolkovsky
(1857–1935) was a Russian pioneer of spaceflight whose
speculations started even before the first aircraft had flown.
The Russians term him the Father of Astronautics. By profession
he was a mathematics teacher. In 1903 he published an article
titled Exploration of Space by Means
of Reactive Devices which contained
the first theoretical proof that space travel by rocket was
possible; his basic equation is now known as the Tsiolkovsky
equation. The article included a design for a rocket that would
work on liquid hydrogen and liquid oxygen, the fuels used by
many modern rockets. Tsiolkovsky realized that multi-stage
rockets (which he termed “rocket trains”) would be
needed to escape from Earth. He published this idea in 1929 in
his book Rocket Space Trains. Shortly before his death he wrote of a rocket
with boosters arranged side by side, similar to the staging
technique actually adopted by Russian space boosters. This
stamp is part of a set of 16 commemorating various Soviet
scientists.
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