Hello everyone,
I am using a fuel centered pintle injector with and am banking on the film
cooling of the fuel hitting the walls of the engine. I think this is enough
film cooling but really have not been able to find anything beyond the
small amount of information on pgs 157-163 of Liquid Rocket Thrust Chambers
by Yang. I am not really sure if I need to worry about upstream of the
main mixing zone as an area to cool but I have seen it referenced as a
design concern with face plate injectors in NASA SP-8089. I understand that
the temperature will vary throughout the combustion chamber but I have no
idea what to really expect this variation to be. Do I need to cool the
walls close to the face plate and the face plate via some secondary fuel
inlet holes for a pintle design?
Thank you,
Zachary Martinez
Aerospace & Mechanical Engineering
Missouri S&T
