Thrust/speed ratios in MegaTraveller

Someone was complaining earlier (I don't remember who, I had to recycle
  the posting, and I could be confusing it with the archives I've been
  reading, but....) that the thrust/speed chart in the design
  sequence is inaccurate for modern aircraft.  I just realized why.

In the design sequence, it is assumed that a vessel will have to defeat
  1G of gravity in order to begin moving.  Basically, this ignores
  the concepts of aerodynamics.  For vertical take off and landing,
  a craft is capable of doing without a 1+ G of acceleration.
  This is what taxiing was developed to avoid, and means that
  anyone trying to design a grav-bike or other vessel doesn't have
  to use so much power to produce thrust, thus producing cheaper
  and smaller vessels.

To correct this, the easiest (though probably not realistic) method
  would be to stop subtracting 1 from the Gs of acceleration
  produced by the vessel if it is intended for atmospheric use.
  Of course, in less dense atmospheres, or higher gravity worlds,
  the speed or taxiing time would have to be adjusted.  Unfortunately,
  I'm only an amatuer physicist, so someone else will have to work
  out the exact adjustments.

On planets without atmospheres, the standard 1G loss of effective
  thrust would still apply.
Just my few bytes worth,
- --Brad