<BLOCKQUOTE>quote:</font><HR>Originally posted by hunter:
How is a drop door any different from using a cargo ramp? This is a vehicle that can fly and hover. So you open the door underneath it and fly it out. Same to get it back in. Works well on the ground or in orbit.
Hunter<HR></BLOCKQUOTE>
in orbit, yeah, it makes little difference (some, but little, mostly issues for tired &/or injured pilots).
on the ground, not quite, plus you forgot the third environ, an important one: in air.
Drop door requires that the doors have full clearance from the ground, not just for the doors, but also for the loaded height of the vehicle. (Which, for examble, limited the size of nuclear bombs... ground clearance to airframe set the upper bound of bomb size, both conventional and special, for all bombers.) Additionally, it requires manuvering while looking up; not a real major issue for the TL, but one of nuisance factor for inexperienced and/or tired pilots. Also, in case the air-raft is replaced with non-gravitic vehicles, this requires some other means of accomodation. And, in common landing situations, this will be putting the full weight of the inactive air-raft against doors rather than bulkheads directly. One advantage: hoists -cieling mounted cable hoists are good.
A side door has the advantage of ground clearance not being an issue, so long as it remains a non-negative number. (Negative ground clearance is a major possibility, though, due to potential crashes...) It avoids almost entirely the issues of replacement vehicles, or use as cargo space. Disadvantage: hoists now need a swing arm.
A rear door has tha added advantages over side doors: that in most negative ground clearance situations, the rear door remains accessible, due to nose-in-dirt/tail in air; that pilots can dock in atmospheric flight by straight nose-in (the turbulence could easily be computer compensated), which is easiest for H Sapiens in typical vehicular situations (We're designed to look forward, not up, and sideways requires adjustments), and even better for tired pilots.
Note also: a fore door (ala the Type A2 in Supp 7): is the worst location. In most crashes, it WILL be blocked, it's practically unuseable in atmosphereic flight, any in-flight use requires manuvering to the vehicles rear, through extreme bow-shock turbulence, and ram-air in flight nearly prevents exiting.
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-aramis
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