Naval Historywith Dr. Alex

Q&A · 1:01:55-1:02:18

Merlin wins on sound, while Double Wasp wins on power-to-weight

The comparison separates emotional appeal from engineering performance: Merlin sounds better, but Double Wasp likely offers the stronger power-to-weight ratio.

Aircraft EnginesNaval AviationPower To Weight RatioPratt And Whitney Double WaspRolls-Royce Merlin Engine
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Question

Which was better, the Rolls-Royce Merlin or the Pratt & Whitney Double Wasp?

Short answer

Merlin sounded better, but Double Wasp probably had the better power-to-weight ratio.

Notes

There is no universal winner because the engines reward different criteria. The Rolls-Royce Merlin has the subjective advantage in sound and character. On the measurable issue of power delivered for engine weight, the Pratt & Whitney Double Wasp probably comes out ahead. The distinction matters for naval aircraft, where range, payload, and carrier handling depend on how engine performance is packaged.