Hybrid engine with solid oxidizer?

[HattoriHanzo]

Is there any experimental or commercial hybrid rocket engine that use solid oxidizer, like ammoniumnitrate/perchlorate together with liquid fuel like kerosene or gasoline?

[marksteamnz]

Yes back in the 50'sand 60' US research into storable missle motors looked at solid oxidiser liquid fuel hybrids. Sorry it was a long time ago when I read about it and in my modest library.
"solid oxidizer" hybrid in google brings up quite a bit of infomation.

[MJD]

They're often called reverse hybrids. Yes, they have been fooled around with.

One big issue to think about: what form would you use the oxidizer in, i.e. how are you planning to form a structurally sound grain from the oxidizer alone without simply making a solid propellant grain?

And the other issue is: what advantage are you trying to achieve with the design of such a motor?

MJD

[HattoriHanzo]

One big issue to think about: what form would you use the oxidizer in, i.e. how are you planning to form a structurally sound grain from the oxidizer alone without simply making a solid propellant grain?

You are right there, thats a big issue. I assume you must add additives to the oxidizer keeping it from falling apart.

And the other issue is: what advantage are you trying to achieve with the design of such a motor?

Higher density without using liquid oxidizers.

[bob000555]

using a cone to aim the fule at the oxidiser would help...look at the sketch its a verry rugh sketch dont laugh

[El-Kablooey]

OMG, that drawing is just tooooooo much. I nearly fell out of my chair!

[Zippiot]

What is pur?

What oxidizer do you plan on using? I have found that 5 parts wood glue can hold almost 95 parts potassium nitrate, but it takes some wicked mixing!

[El-Kablooey]

"pur" is another word for fuel.
:)

[bob000555]

the "pur" is fule the f looks like a p and the l and e blended togegther to make an r...