As promised:
(This framed picture is on the wall... somewhere in Pyestock... hence the reflection of me taking the shot).
OK, working from left to right:
1.
Plenum Chamber: there is a door to this just behind the door to the test chamber. I think I've got one shot of it, but there's not much there.
2.
Test Chamber: The engine on test is put in here. This is the part of the cell which was modified for the film Sahara with the doors added to the end. The Working Section is the part of the roof which is removed to allow the engine to be dropped in.
3.
The Diffuser Section: this is the long dark section of pipe which lies beyond the Sahara doors. The hot exhaust gases from the jet exhausts were blown along here.
4.
Inhibition Torches: these are the cylindrical pieces of metal jutting from the floor as you enter the large end chamber. Not sure how these work.
5.
Exhaust Gas Cooler: And this is the end of the chamber from which most of the pictures were taken.
I hope this makes sense and you can see just how huge this cell actually is. I've been along the flooded sections underground and they continue all the way along to the connections with the Vacuum Bus Mains (so the Air House is clearly on 'suck' at this point).
All the best,
Simon