LARGE MILLING Tool for non-rigid shells ogival NOZZLE liquid rocket engines (LRE)

摘要

Tool for milling large nonrigid ogival shells liquid rocket engine nozzles (LRE), consisting of a structure on the profile equidistant outer surface of the fire wall of the sheath, characterized in that the mandrel is made of two parts: a fixed part of the mandrel and a movable upper part - puller moving up with at least 3 pinch bolt abutting against the end face of the fixed part when removed from the mandrel it milled inner sheath, moving it upward, while preventing Nia shell deformation during removal must be carried out under the following inequality: where F- force of adhesion between the gypsum and the shell; S- area of ​​the lateral surface of the shell below the stripper mm; L - cone height, mm; d- small diameter of the cone shell, mm; d - large conical diameter of the cladding, mm; α - average value of the inclination angle ogival shell, deg; S- cross-sectional area of ​​the envelope in place joining the fixed portion of the mandrel and puller mm; σ- tensile strength of the envelope material, kgf / mm.