In summary: McDonnell Douglas (née Douglas) built the DC-8 with four engines because the 1950s demanded it: for power, safety ...

The president pitched plans on Thursday for a supercharged version of the F-35 with two engines, which would likely require building a new aircraft.

President Donald Trump said the United States is developing a new twin-engine fighter jet he dubbed the “F-55” after voicing displeasure with some aspects of Lockheed Martin’s F-35.

U.S. President Donald Trump's vision of a new, twin-engine version of Lockheed Martin's F-35 fighter jet may need to be scaled back due to cost and engineering realities, according to two people ...

President Donald Trump on Thursday floated the idea of a supercharged F-35 called the F-55. He said this aircraft would have two engines because he doesn't like single-engine planes.

WASHINGTON (Reuters) -U.S. President Donald Trump's vision of a new, twin-engine version of Lockheed Martin's F-35 fighter jet may need to be scaled back due to cost and engineering realities ...