14 May (Soviet Union, USSR ) within release Helicopters goes into circulation Stamp Mi - 10k face value 15 Russian kopek
Stamp Mi - 10k in catalogues | |
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Michel: | Mi:SU 4960 |
Stamp is horizontal format.
Also in the issue Helicopters:
Stamp Mi - 10k it reflects the thematic directions:
A helicopter is a type of rotorcraft in which lift and thrust are supplied by horizontally spinning rotors. This allows the helicopter to take off and land vertically, to hover, and to fly forward, backward and laterally. These attributes allow helicopters to be used in congested or isolated areas where fixed-wing aircraft and many forms of short take-off and landing (STOL) or short take-off and vertical landing (STOVL) aircraft cannot perform without a runway.
Aviation is the practical aspect or art of aeronautics, being the design, development, production, operation and use of aircraft, especially heavier than air aircraft. The word aviation was coined by French writer and former naval officer Gabriel La Landelle in 1863, from the verb avier (synonymous flying), itself derived from the Latin word avis ("bird") and the suffix -ation.