उपग्रह प्रमोचन यान-3
[[chitr:Launch Vehicles.jpg|thumb|vibhinn pramochan yan|350px]] upagrah pramochan yan-3 (es.el.vi.-3), (Satellite Launch Vehicle) bharat ka pahala prayogik upagrah pramochan yan, 18 julaee 1980 ko saphalatapoorvak shar keandr, shriharikota se tab pramochit kiya gaya jab rohini upagrah ares-1 ko kaksha mean sthapit kiya gaya tha.
- eselavi -3, 22 mi. ooancha, sanpoornatah thos, 17 tan vajan ka char charan yan hai, jo 40 ki.gra. bharavali shreni ke nitabharoan ko prithvi ki nimn kaksha mean sthapit karane mean saksham hai. usane u dan mean yan ko poorv-nirdharit prapath par chalane ke lie ek vivrit pash nirdeshan (sanchit akshanati karyakram ke sath) ka upayog kiya.
- agast 1979 mean eselavi -3 ki pahali prayogatmak u dan, keval aanshik roop se saphal thi.
- julaee 1980 ke pramochan ke alava, mee 1981 aur aprail 1983 mean sudoor sanvedi sanvedakoan ka vahan karane vale kakshiy rohini upagrahoan ka pramochan kiya gaya.
tika tippani aur sandarbh
bahari k diyaan
sanbandhit lekh