Ablative linings
Posted: Sun Dec 06, 2009 4:47 am
Hi all!
Quick question, I'm investigationg ablative liquid rocket engines and want to know what would make a good ablative liner for the combustion chamber? Ceramic would be my first choice but after hunting down some, the price just kills it, secondly since I've got a chank of graphite for the nozzle so I thought I could go ahead and make the whole chamber/nozzle from graphite, but I believe its susceptible to cracking (correct me if I'm wrong) and although not as expensive as ceramic for me to get I wouldn't want to be replacing a new chamber every month or so during testing.
Everything is to be mounted in a SS outer case, so bear this in mind.
Or could the graphite chamber be inclosed in the ss tube? or does it expand too much with the heat?
This particular engine only has a burn time of 10sec.
Composites are out of the question as well, too expensive.
Cheap and easy, cheap and easy is the motto.
Iain
Quick question, I'm investigationg ablative liquid rocket engines and want to know what would make a good ablative liner for the combustion chamber? Ceramic would be my first choice but after hunting down some, the price just kills it, secondly since I've got a chank of graphite for the nozzle so I thought I could go ahead and make the whole chamber/nozzle from graphite, but I believe its susceptible to cracking (correct me if I'm wrong) and although not as expensive as ceramic for me to get I wouldn't want to be replacing a new chamber every month or so during testing.
Everything is to be mounted in a SS outer case, so bear this in mind.
Or could the graphite chamber be inclosed in the ss tube? or does it expand too much with the heat?
This particular engine only has a burn time of 10sec.
Composites are out of the question as well, too expensive.
Cheap and easy, cheap and easy is the motto.
Iain