The pilot reported a double bird strike - a rare event where birds enter both engines.

VOA: special.2009.01.30

To test another variable the only choice was to rerun the entire pilot and therefore double the cost.

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The final version of this vehicle, comprised of a large wing, pilot nacelle and double-skinned airfoil, was flown by cyclist and hang-glider Bryan Allen.

ENGADGET: The Highs and Lows of Human-Powered Flight Alt

Rolls was also a trained engineer who was a promising pilot, the first to complete a double crossing of the English Channel.

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