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Primary Examiner: Pendegrass, Verlin R.
Assistant Examiner: Nelson, Peter A.
Attorney: Bucknam and Archer

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Title: Solid cylindrical centripetally burning propellant with four convex arced lobes

Abstract: A solid cylindrical centripetally burning propellant element comprises four lobes, the cross-section of each lobe comprising a convex arc tangential to a right circular cylinder circumscribing the element, of radius R, the radius of the arc being equal to the combustion thickness e of the element. The element has only two combustion residues by which it may be secured in the combustion chamber of a rocket engine.

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Inventors: Portalier, Pierre Louis (Sevres, FR)

Application Number: 449927
Filing Date: 1974-03-11
Publication_date: 1976-01-20
Assignee: Societe Nationale des Poudres et Explosifs (FR)
Primary Class(es): 102/291
Other Classes:
US Patent Ref:

2728295	Dec, 1955	Rubin et al.	102/99.
3029736	Apr, 1972	De Shazo	102/99.
3256819	Jun, 1966	Leeper	102/99.
3691955	Sep, 1972	Jordan et al.	102/99.

Other Refs: 17,994

Sep, 1894	UK

Other References: ABS Journal, Recent Advances in Solid Propellant Grain Design, Vandenkerchoue, J. A., July, 1959, pp. 483-490.