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    • 8. 发明授权
    • Insulating layer for solid fuel rocket engines
    • 固体燃料火箭发动机绝缘层
    • US4552070A
    • 1985-11-12
    • US411514
    • 1982-08-25
    • Heinz G. Langer
    • Heinz G. Langer
    • F02K9/34F42B15/00
    • F02K9/346Y10S60/909
    • A solid fuel rocket engine comprises a casing which defines a combustion chamber with a solid propellant charge in the combustion chamber and an insulating layer of a water containing alkali silicate and fibers disposed between the casing and the charge. The layer is a type which will froth at a predetermined temperature which occurs during burn off of the propellant charge so that it increases in its thickness dimension in the area of the hot gases which develop and provides an adequate insulation. A method of producing the layer comprises heating the alkali silicate layer to a temperature in which it becomes plastic and sheathing the propellant charge with the plastic layer. Thereafter the sheath charge is inserted into the combustion chamber casing leaving an annular gap between this layer and combustion chamber casing. Thereafter heat is applied to the vicinity of the chamber to cause the layer to froth and expand to close the annular gap. It is advantageous to include a lining of a plastic alkali layer in addition to the layer which sheaths the propellant charge between it and the casing. In addition, it is sometimes advantageous to add a plastic foam material in the gap between the sheath, the cover charge and the casing.
    • 固体燃料火箭发动机包括壳体,其限定在燃烧室中具有固体推进剂装料的燃烧室,以及设置在壳体和电荷之间的含有碱性硅酸盐和纤维的水的绝缘层。 该层是在燃烧期间发生的预定温度下发泡的类型,使得其在发生并提供足够绝缘的热气体的区域中其厚度尺寸增加。 制造该层的方法包括将碱金属硅酸盐层加热至其变成塑料的温度,并用塑料层包覆推进剂电荷。 此后,护套电荷被插入到燃烧室壳体中,在该层与燃烧室壳体之间留下环形间隙。 此后,将热量施加到室附近,使得该层起泡沫并膨胀以封闭环形间隙。 除了在其与壳体之间的推进剂电荷的鞘之外,还包括塑料碱层的衬里是有利的。 此外,有时在塑料泡沫材料的护套,覆盖物和壳体之间的间隙中加入塑料泡沫材料是有利的。