XR Flight Operations Manual Version 3.0
Copyright 2006-2018 Douglas Beachy. All Rights Reserved.
37
All Supply Lines Green!
3.
At this point there is pressure in the fuel lines, so refer to the
EXTERNAL
SUPPLY LINES
switches on the lower left-center of the panel. Click the
MAIN/SCRAM/APU/LOX
switches as desired to feed consumables to that tank
(picture is below). To resupply the RCS tank, set the
X-FEED
switch to
RCS
to cross-feed fuel in the main tank to the RCS tank.
Resupply in progress; filling RCS tanks as well.
Hint: If you are low on main engine fuel during a mission and have some RCS
fuel to spare, you can cross-feed RCS fuel over into the main tank by setting
the X-FEED switch to MAIN and cross-feeding fuel until only a small amount
of RCS fuel remains. However, be sure to keep enough RCS fuel in reserve to
finish the mission!
Hint: You can dump fuel and/or LOX [usually done only before reentry to
lighten the ship] by holding down the dump button below the main gauge.
Note that you must HOLD the button down to initiate the fuel dump. Tap the
button again to halt the fuel dump.