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http://home.comcast.net/~rossgr1/EAM/whatsit.JPG
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Danger said:Colonoscope image of someone in ill health?
It does look like a light fixture.recon said:To me, it looks like a very bad chandelier.
Gokul43201 said:It's got to be something from the Aircraft Museum, wot ?
We are on the right track.Gokul43201 said:It's got to be something from the Aircraft Museum, wot ?
Integral said:Sorry Hurykl, you need to look up, not down!
It better not be! Those are hypergolic motors!brewnog said:I suppose the fuel is ready-mixed
Danger said:It better not be! Those are hypergolic motors!
Sorry.brewnog said:Teach me, dammit!
Danger said:Sorry.
Hypergols are binary propellants that burn spontaneously when they contact each other. No igniter system required. Nitric acid used to be the oxydizer of choice, and the other part can range from unsymetrical dimethylhydrazine to analine. The Ariane rocket, for instance, uses monomethylhydrazine and nitrogen tetroxide for its final stage. They tend to be used where ignition is not negotiable.
I believe that the fuel nozzles are the dots in the center.brewnog said:Which are the fuel feed nozzles? I'd have expected them to look like the kind of swirl atomisers you get in a GT engine, although I suppose the fuel is ready-mixed so this isn't as important? Don't know nearly enough about rockets...
The entire centre section there is the injector assembly. Although I can't say for sure about this particular engine, the injector holes are generally machined in concentric circles. Ideally, alternating rings should feed propellant, and the ones between oxydizer. Since the components are equally reactive in liquid form, atomization is accomplished by the initial turbulence; any remaining droplets are quickly deconstructed by the combustion violence.brewnog said:what's being squirted where? And how come I don't see any GT style atomisers? Is it because there's no issue of getting everything to fully combust at those temperatures?
Danger said:The entire centre section there is the injector assembly. Although I can't say for sure about this particular engine, the injector holes are generally machined in concentric circles. Ideally, alternating rings should feed propellant, and the ones between oxydizer. Since the components are equally reactive in liquid form, atomization is accomplished by the initial turbulence; any remaining droplets are quickly deconstructed by the combustion violence.
The picture that you posted is pretty dark, but it looks like cast iron to me. Must be something fairly old, like maybe a printing press.