Rolls-Royce RB.44 Tay

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The Rolls-Royce RB.44 Tay is a British turbojet engine of the 1940s, an enlarged version of the Rolls-Royce Nene designed at the request of Pratt & Whitney.<ref name="Connors, p.202">Connors, p.202</ref> It saw no use by British production aircraft but the design was licence built by Pratt & Whitney as the J48, and by Hispano-Suiza as the Verdon.<ref>Gunston 2006, p.101.</ref>

Two early production examples of the Tay were evaluated during 1950 by the Royal Aircraft Establishment (RAE) at Farnborough Airfield, Hampshire, in a specially modified Vickers Viscount.

Variants

RB.44 Tay: Rolls-Royce development engines only, no production.
Hispano-Suiza Tay 250: The Tay built under licence in France.<ref name=AEotW57>Template:Cite book</ref>
Hispano-Suiza Tay 250A: The Tay built under licence in France.<ref name=AEotW57/>
Hispano-Suiza Tay 250R: The Tay built under licence in France.<ref name=AEotW57/>
Hispano-Suiza Verdon 350: The Tay developed under licence in France.<ref name=AEotW57(2)>Template:Cite book</ref>
Hispano-Suiza Verdon 370: The Tay developed under licence in France.<ref name=AEotW57(2)/>
Pratt & Whitney J48: Template:Main The Tay built and developed under licence in the United States.