gainful

adj. profitable, lucrative, rewarding

SA-6 redirects here. For the Apollo test mission go to A-101The 2K12 Kub (; ) mobile surface-to-air missile (SAM) system is a Soviet low to medium-level air defence system designed to protect ground forces from air attack. "2К12" is the GRAU designation of the system. Its NATO reporting name is SA-6 Gainful.Each battery consists of a number of similar tracked vehicles, one of which carries the 1S91 (NATO designation Straight Flush) 25 kW G\H band radar (range 75 km\47 miles) equipped with a continuous wave illuminator, in addition to an optical sight. The battery usually also includes 4 triple-missile transporter erector launchers (TELs) and 4 trucks each carrying 3 spare missiles and a crane.
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Adjective
1. yielding a fair profit
(synonym) paid, paying
(similar) profitable

(a.)
Profitable; advantageous; lucrative.
  

adj.
سود مند, فائدہ مند, کماؤ, نفع بين