초록 ▼

Propellant charge, the combustion of which takes place according to at least two thrust modes, and which makes it possible to obtain at least one acceleration phase and one cruising phase of the self-propelled device equipped with this charge. The propellant charge is of the so-called “trumpet block

Propellant charge, the combustion of which takes place according to at least two thrust modes, and which makes it possible to obtain at least one acceleration phase and one cruising phase of the self-propelled device equipped with this charge. The propellant charge is of the so-called “trumpet block”type with radial combustion from a central channel which has a star-shaped cross-section over a length equal to at least one third of the total length of this charge. In order to obtain at least one dual combustion mode using only a single charge of propellant, that part of the channel which is of star-shaped cross-section possesses at least one zone in which the star of the channel has at least four arms which determine at least two tooth-like sectors of propellant with a large sector angle (A) and at least two tooth-like sectors of propellant with a small sector angle (a), distributed symmetrically relative to the axis of the charge.

대표청구항 ▼

Propellant charge which has at least two thrust modes, of the “trumpet block”type with radial combustion from a central channel with one thrust mode contained in a portion which has a star-shaped cross-section over a length equal to at least one third of the total length of the charge, wherein the p

Propellant charge which has at least two thrust modes, of the “trumpet block”type with radial combustion from a central channel with one thrust mode contained in a portion which has a star-shaped cross-section over a length equal to at least one third of the total length of the charge, wherein the part of the channel which is of star-shaped cross-section possesses a zone in which the star of the channel has at least six arms, which determine at least six tooth-like sectors of propellant, said part of the channel which is of star-shaped cross-section consists only of said tooth-like sectors, at least two tooth-like sectors with the same large sector angle (A) and at least two tooth-like sectors of propellant with the same small sector angle (a), distributed symmetrically relative to the axis of the charge, wherein the large sector angle (A) is defined, in terms of the small sector angle (a), by the following relationship: (2a-10°)A(2a+25°) and wherein the small sector angle (a) is between 25°and 60°.