EN­GINE

History of War - - H-47 CHINOOK -

The Honey­well T55 fam­ily of mil­i­tary tur­boshaft en­gines be­gan life, as its des­ig­na­tion in­di­cates, in 1955. To date, more than 6,000 T55 en­gines have been pro­duced, log­ging some 12 mil­lion hours of op­er­a­tion on the Boe­ing CH-47 Chi­nook and MH-47 heli­copters.

At its in­tro­duc­tion, the T55 pro­duced 1,600 shaft horse­power (SHP). Sev­eral decades and gen­er­a­tions of de­vel­op­ment later, to­day’s T55 pro­duces 4,800 SHP and pow­ers the CH-47 Chi­nook to a max­i­mum speed of 170 knots (196 miles per hour). With proven power, re­li­a­bil­ity and dura­bil­ity, the lat­est con­fig­u­ra­tion 55-L-714A de­liv­ers 22 per cent more power and uses seven per cent less fuel than its pre­de­ces­sor.

“TO­DAY’S T55 PRO­DUCES 4,800 SHP AND POW­ERS THE CH-47 CHI­NOOK TO A MAX­I­MUM SPEED OF 170 KNOTS”

ABOVE: A T55 tur­boshaft en­gine on a Ja­panese Air Self­de­fense Force CH-47

BE­LOW: A Honey­well T55-K-712 tur­boshaft en­gine at Kawasaki Air Base, Ja­pan

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