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It also meant an aircraft advanced enough that a single man could fly it non-stop across the Atlantic. Which meant that it had to be fast enough that he could stay awake, and reliable enough that he could keep it running without an engineer for backup.
Which is, I dare say, why people at the time thought it important enough to offer a prize for the first one to do it.
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Hmm, several points here.
First, I should correct an error. The Lindburg flight was 33 hours, not 55 as I mistyped earlier. That would have been some flight!
The gist of the argument above is that Lindburg was famous because solo flying meant he was the first with a swift and reliable plane, and that was sufficiently important for a prize to be awarded.
Even if the facts supported this assertion I would question why this particular level of speed and reliability was so important. We still have flight engineers for Atlantic flights, so it’s obviously no big deal to keep two persons in the cockpit. But the facts seem to show that the Spirit and the Vimy were quite similar in both respects.
The Vimy was designed 10 years before the Spirit, so you would expect it to have a slower top speed. But the specs I found give it 103 mph, as opposed to the Spirit’s 116 mph, not a lot of difference. It took 16 hours for the Vimy to cross, while the Spirit took 33 hours for a longer distance, but there was no need for anyone to stay awake for a day or more to cross the Atlantic.
The Vimy problems were not mechanical reliability (though it did lose an exhaust deflector), but ice. It ran into bad icing conditions, and Brown had to break the ice from the engine’s cooling louvres. Lindburg managed to avoid these, otherwise we would have not heard from him again. The Vimy was quite competent across the Atlantic - in 1919 Keith and Ross Smith had flown one from England to Australia, about 11,000 miles. That flight had one mechanical problem; a failed oil gauge.
Keith and Ross Smith got a £10,000 prize for the Australia flight, and coincidentally Alcock and Brown also received £10,000 - about £500,000 in todays money. It is an interesting idea to suggest measuring fame by the receipt of prizes - I don’t think this is a completely unbiased measure, and sometimes may be completely misleading, but if we accept it in this instance, I note that Lindburgh received the $25,000 Orteig award, which equates to about £5200 with the exchange rate of the time. That would suggest that Lindburg was thought about half as famous/important as Alcock and Brown?