Device for thermal protection of an inner wall of a hollow structure subjected to an ablative gasflow and method for producing the same hollow structure

摘要

The thermal protection device is obtained by the winding of refractory yarns (3) having small loops and of radial strengthening and reinforcing picots which are also made from refractory fibres advantageously twisted together. The small loops and the picots have an orientation and/or a pitch which are predetermined in relation to the direction of the ablative gas flow in the hollow structure. Application to the production of the barrel of a ram jet engine chamber. IMAGE