A flight test of a P-61 aircraft using a ramjet engine, which was used to propel missiles. The P-61 was built by Northrup and used by the Aircraft Engine Research Laboratory of the NACA to test the new jet engine.Image Credit: NACA
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A flight test of a P-61 aircraft using a ramjet engine, which was used to propel missiles. The P-61 was built by Northrup and used by the Aircraft Engine Research Laboratory of the NACA to test the new jet engine.Image Credit: NACA