EARTH
ORBIT
ALTERNATE
MISSION
Assumptions
1)
Safe
insertion
orbit
has
been
achieved
by
the
S-IVB.
2)
A
Systems
failure
has
resulted
in
a
NO/GO
for
TLI.
Constraints
1)
Maintain
SM-RCS
deorbit
capability.
2)
Photography
over
U.S.
3)
LM
to
be
jettisoned
for
water
impact.
Sequence
of
Events
This
alternate
mission
is
initiated
by
a
systems
failure
which
will
not
allow
TLI.
The
alternate
mission
timeline
is
entered
at
the
nominal
time
of
TLI
and
allows
for
a
failure
checkout
period
followed
by
a
possible
second
TLI
opportunity.
If
the
second
TLI
is
not
performed,
the
CSM
executes
T.D.&E
and
prepares
the
LM
for
an
ocean
impact.
The
CSM
executes
five
SPS
burns
to
position
itself
for
photographic
coverage
over
the
U.S.
All
the
Sim
bay
experiments
are
activated
and
an
EVA
is
planned
to
retrieve
the
film
canisters.
6-1
Permalink: http://pid.emory.edu/ark:/25593/tsxxx
