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Tri-Jets: TriStars, DC-10S and MD-11S (Osprey Civil Aircraft)
1855325926 pdf Three-engined jetliners were in vogue in the fuel-conscious early 1970s, and for a while?three lumps? instead of ?four? looked like the way ahead for wide-body jetliners, particularly as far as McDonell Douglas and Lockheed were concerned. However, the advent of more fuel-efficient powerplants has seen operators opt for either two- or four-engined designs, and today only the MD-11 remains in production, giving its manufacturer a toe-hold in the world?s widebody jetliner business.