The aircraft were to replace the aging MIG 21 squadrons as the workhorse of the Indian Air Force -LRB- IAF -RRB- . एलसीए को भारतीय वायुसेना की मौजूदा ताकत मिग-21 विमानों के पुराने पड़े रहे बेड़ै की जगह लेनी थी .
परिभाषा
a horse used for plowing and hauling and other heavy labor
machine that performs dependably under heavy use; "the IBM main frame computers have been the workhorse of the business world"