DEVICE FOR INVESTIGATION OF STRESSED-DEFORMED STATE OF THE CASING OF THE MISSILE ENGINE OF SOLID FUEL FROM REINFORCED PLASTICS

摘要

The utility model refers to the measuring technique, in particular to the means for measuring the deformations of the shell structures of the solid-propellant rocket cores from reinforced plastics of the cocoon type when tested for strength, and can be used for the experimental determination of the difference between the principal stresses and the stress concentration coefficient. The device comprises a test charge located on the optical axis between a polariscope polarimeter and an analyzer and a light filter, a loading unit. The test charge is made of a flat, arbitrary shape, the ends of which are made in the form of a swallowtail. The loading unit includes two devices in the form of a dovetail, fixed in two grips mounted on the racks, one motionless, the second with the possibility of axial displacement and is made on the principle of a screw pair: a nut connected to the rod, which is fixed at one end to the stand, and the other through the force sensor is connected to the gripper, the posts are mounted on a base having a rectangular window-cutout. The technical result: the possibility of experimental investigation of the distribution of the difference of the principal stresses in the model, determine it at the place of the greatest concentration of stresses, depending on the number of filler threads and evaluate the performance of the solid propellant rocket engine body from reinforced plastic. 1 yl. determine it at the place of the greatest concentration of stresses, depending on the number of filler threads and evaluate the performance of the solid propellant rocket engine body from reinforced plastic. 1 yl. determine it at the place of the greatest concentration of stresses, depending on the number of filler threads and evaluate the performance of the solid propellant rocket engine body from reinforced plastic. 1 yl.