Assertion: tank's engine | /r/CapableOf | fail to earn any aircraft orders
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Source sentences:
text: The engine had originally been an effort by Ford to produce a V-12 liquid-cooled aircraft engine patterned after the Rolls-Royce Merlin, but failed to earn any aircraft orders and so was adapted as a V-8 for use in tanks; use of this lower profile engine together with the choice of a rear transmission and rear sprocket drive layout made it possible to lower the hull silhouette and eliminate the side sponsons.