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Last update Nov-28-1999

Feed Line

The Feed line pipes the oxidizer (GOX or H2O2), hypergolic-startup liquids and nytrogen for shut-off.

The feed line itself can be divided into four main lines:
Line A-piping the oxidizer (3/4" tubing, maxp=70 bar)
Line B-piping nytrogen (3/4" tubing, maxp=70 bar)
Line C-piping oxidizer for the hypergolic startup (1/4" tubing, maxp=30 bar)
Line D-piping fuel for the hypergolic startup (1/4" tubing, maxp=30 bar)

Line A and B both merges into a single line through a 3way pneumatically operated valve (normally open on B).
Other pneumatically operated valves (2ways) are present on lines B (normally open), C and D.

A new dump line was added to allow quick depressurization of the hypergolic lines in the case of injector chocking. The line is not illustrated in the pictures below.

 

Lines A & B

3way
bypassing 2ways

Hand operated
2ways N2

Lines A& B

Lines C & D

Tank
hypergolic fuel

Tanks
for liquids

 

External
tubing

Tank
hypergolic fuel

Tank
hypergolic fuel

Sky cut-away view.

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