Here are details about a :
Space commemorative cover
or Space Cover.
Cosmodromo / Luogo : Baikonur
Data di annullo: 14 Oct. 1972
Tipo di Evento : Lancio
Rampa di Lancio / Luogo : Russia Plesetsk
Missione con Equipaggio / Robotica : Robotica
Obiettivo/Tipo Missione : Telecomunicazioni
ou?/where?: au sol - ground
autographe?: non - noneDescrizione : Molniya 1/21 was a first-generation Russian communications satellite orbited to test and perfect a system of radio communications and television broadcasting using earth satellites as active transponders and to experiment with the system in practical use.
During its apogee, Molniya 1/21 remained relatively stationary with respect to the earth below for nearly 8 of every 12 hr. By placing three or more Molniya 1 satellites in this type of orbit, spacing them suitably, and shifting their orbital planes relative to each other by 120 deg, a 24-hr/day communication system could be obtained. Parola chiave :
#Pianeta,
#Razzo,
#Satellite,
#Telecomunicazioni, RIVISTA DELLO SPAZIO : 10 - 2009 Ultima modifica: 09/08/2016 @ 10h39
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ba 269 C | 38,- |
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Pagina : future · Ref: ba 269 CAvvenimento Spaziale : MOLNIYA-1 21 (SATELLITE) · MOLNIYA-1 26L · MOLNIYA-M BLOK ML
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