[Date Prev][Date Next][Thread Prev][Thread Next] - [Date Index][Thread Index][Author Index]

AO40 ATOS motor questions

IF the AO40 control operators decide that it's impossible or too risky to
attempt future burns of the 400N motor, what magnitude of orbital changes
are possible with the ATOS motor?  Not being an expert in orbital mechanics,
are the following wild guesses correct?

Wild guess 1: The ATOS motor cannot provide enough delta-V to produce a
large change in inclination.  Consequently, the Southern hemisphere gets
MORE coverage and the Northern hemisphere gets less coverage than the
planned orbit.

Wild guess 2: The ATOS motor is incapable of giving us an orbit in which the
argument of perigee is constant.  Consequently, the AO40 perigee and apogee
would change with every orbit, like it does now.


1. Is the ATOS motor (with the available fuel) able to introduce a small
change in the inclination?

2. Is it possible for the ATOS motor to introduce an orbit in which the
inclination gradually increases over a period of several years?  Or is the
orbit too intrinsically stable because of the high perigee?  (I'm
remembering the slowly changing inclination of the AO-13 orbit)

Thanks in advance to all the orbit experts.

Wayne Estes W9AE
Mundelein, IL, USA

Via the amsat-bb mailing list at AMSAT.ORG courtesy of AMSAT-NA.
To unsubscribe, send "unsubscribe amsat-bb" to Majordomo@amsat.org