What about some history for those devices...
Something like
"The Rolls-Royce Merlin engines were a series of 12 cylinder, 60° "V", 27 litre, liquid cooled piston aircraft engines built
during World War II by Rolls-Royce ( Derby, Crewe and Glasgow), at Ford in Manchester[1] and under licence in the
United States by Packard.[2] They are widely considered to be among the most successful aero engines produced
during World War II, and perhaps the finest piston engines ever built for aviation. Merlins are highly sought-after by
aviation enthusiasts even today.
The Merlin name came from the bird (a small falcon also known as "pigeon hawk") rather than King Arthur's legendary
magician. However, in the film The First of the Few, Sir Henry Royce refers to King Arthur's Merlin, rather than the bird
(probably due to some propaganda purposes, or a simple incorrect assumption on the part of the film makers)."
http://en.wikipedia.org/wiki/Rolls-Royce_Merlin