a 1 km long rail should not be too long to design.
or too heavy to lift.
in fact the 1 km long rail could be stored in a box
and as lifted the rail would unfold itself and align
itself one section at a time.
made from either titanium , carbon fiber or the new really strong but lightweight metals formed with bubbles inside them to reduce weight as explained on the sagg homepage.
and the rail weight would only be a matter of the number of lifting balloons used.
so proper design of the rail and lifting balloons
should overcome any obstacles as to strength , length or weight.
as for the recoil , an opposing counterbalancing dummy
satellite could be launched simultaneously in the opposite direction , this would remove the recoil.
as far as the rotation of the earth is concerned , small ion thrusters could be used to stabilize the overall launch
platform to counteract not only the earths rotation but
also the winds that are encountered.
the ion thrusters could also be used to align the satellite into its proper orbital insertion angle of attack itself
after it launches vertically from the platform.
Im sure that any obstacles that may arise other than economic or political obstacles could be easily worked out if allowed.
all they need to do is just do it.
everything is in place already , and theres really no reason why satellites need to be so large , and if they do then the
satellites can be made to assemble themselves together in
blocks after launch.
heck , the first satellite can be a programmed worker droid
or an rov that assembles the satellites when they arrive in space.
this can all be done today , we just have to start and we
have to stop being so negative and teaching our children
things that have no value such as the escape velocity we
hear or see on tv or at the movies.
