NASA tests most powerful booster rocket ever

AFP) – ^ | 1 hour ago

[SunkenCiv]

saved from the now-defunct Beal Aerospace website:

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Status	Name	Nationality	Thrust**	Propellants	Notes
Out-of-production	F-1	USA	1.7 million	Liquid Oxygen - Kerosene	5 used in each Apollo Saturn Stage 1. Flown between 1967 to 1973.
Development stopped	RD-270	USSR	1.5 million	Nitrogen Tetroxide - UDMH	Tested, but never flown. Largest single-chamber engine designed by USSR.
Development stopped	M-1	USA	1.2 million	Liquid Oxygen - Liquid Hydrogen	Designed as replacement for F-1. Program canceled in 1966.
In production	BA-810	USA	810,000	Hydrogen Peroxide - Kerosene	Stage 2 engine of BA-2 launch vehicle. First test 1Q 2000; first flight 2002.
In production	RS-68	USA	745,000	Liquid Oxygen - Liquid Hydrogen	Currently in development and production for use on Delta IV launch vehicle.

[Tallguy]

“A fair question. Making a tube long enough and straight enough without segmentation I think would be a daunting task.

I don’t know if it’s length or straightness that is the problem. I think that it’s more the need to be able to pour the solid fuel slurry without any voids. If you get air pockets trapped in the fuel stack then the fuel does not burn properly and my not be contained.

[SunkenCiv]

the Ares Mobile Launcher:
http://www.freerepublic.com/focus/news/2481744/posts
http://www.freerepublic.com/focus/chat/1663407/posts