How a solid rocket motor works

On Wednesday, March 11, 2014, NASA will attempt to test fire a five-segment solid rocket motor at the Utah test facility of motor manufacturer Orbital ATK. Here is what's happening inside that long white tube.

[samspade]

Excellent presentation! Clear, informative and understandable. Bravo!

[ashardalondragnipurake]

that makes so much sense
was wondering how these had any consistency as more fuel was burned
burning inside out instead of bottom up is so simple and logical, yet i hadnt thought of it
thanks for teaching me something and immediately getting to the point
great video

[bombsgamer]

Yeah please don’t do vertical videos, if it was horizontal I could actually see the entire image, but otherwise it’s good.

[golferchin]

Thanks! I've always imagined that a solid rocket booster fuel is a whole cylinder of solid and ignite from bottom, but it never felt right because that would mean top heavy the longer it is in flight, also I thought the combustion should melt the casing. Or the combustion is too strong the casting won't hold, etc. After watching this video my no. 1 & 2 doubt is solved.

[SteveMHN]

So it's ignited from the top, I never new that.

[B_uttcrumbs]

That’s how I feel after a chipotle burrito.

[djohanson]

that was good. Brain over heating now. I'm big into how solid rocket motor works.

[chittytherobot]

interesting, so solid rocket engines are basically hollow in the middle ? and how does that igniter work & generate a uniform burn of the propellant ? dont some part burn more / less, what guarantees the uniformity or the burn ?

[djohanson]

Please more. I need more solid rocket lesson. Did you the solid fuel mixture consists of ground aluminum dust. Yep, aluminum is flammable when it is made into a dust. Ever see steel wool burn? Same concept. How idk.

[drgentlewolf]

How dose it cool down the injection port .... ?? it might be a Ultrahigh temperature
around the port. and That's gonna melt the injection port...

[rdhunkins]

Better if it were filmed in landscape.

[shakostarsun]

All these smart people and such hi tech and now adays every rocket that goes up from big tech and others goes Kaboom!

[itzmrman]

Oh i though it was just a tube filled with solid fuel and a flip lighter taped to the bottom

[khwaac]

Thou shalt not film vertically on a cellphone.

[smooveking]

so where does the astonat sit and how many

[JustinHappenstance]

Learning rocket science but can't figure out how to operate phone camera.

[MSWSB]

All that knowledge, and shooting video in portrait. Technical experts are helpful, but remember, they still may have zero understanding of how anything else works. (See: Coronavirus nonsense)

[Loneeeey]

Isnt this technology old and obsolete? I mean there is no chance of any kind of re-usability, ever..