These companies make diesel airplane engines, but are they good for flying?

Diesel planes aren't just a novelty; they are revolutionizing general aviation fuel costs and range. See why these engines ...
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Why Did Boeing Build The 747 With 4 Engines?

The Boeing 747 Jumbo stands out for being the most popular quad-engined commercial passenger jet to exist. It also boasted the longest production run of any commercial jet in its class. But why was it ...