Comments by "Keit Hammleter" (@keithammleter3824) on "Why are aircraft windows Round instead of Square?!" video.

That seems to be a matter of designer choice to some extent. Many US large military aircraft, eg B-52, do not have a nose wheel, and instead have a large bogey (ie multi-wheel) system forward of the wings, and another bogey set aft of the wings. But the USAF can afford very long runways and clear zones around them. The main-wheel-under-wings+nose wheel arrangement permits a greater takeoff rotation, increasing wing angle and thus lift, and thus needs less airport land.
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That's not actually a good question. There was never any chance of De Havilland getting it right first time. They attempted to do something they were not in the least qualified to do, and got many things in the Comet seriously wrong. The Comet 1 had lots of crashes and was finally ordered permanently grounded because it was so bad - the only Western airliner to be so ordered. Even the dreadful DC-10 was allowed to continue flying once the known design flaws were corrected. No other airliner has ever come anywhere near to the Comet's ratio of passengers killed per passenger-kilometer flown. Windows were implicated in only 2 losses. Quite apart from that, the Comet 1 was actually a quite small aircraft (only 40 passengers, but with non-luxury seating perhaps up to 80), designed according the then British concept that only rich people and captains of industry could afford to fly. Boeing realised very early that the way to go was to make very large aircraft and by this means get the cost per passenger-kilometer down so that ordinary tourists could afford to fly. So, even if De Havilland HAD got it right first time, it was a niche market machine and most airlines would have sooner or later gone for a big Boeing or Douglas anyway.
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