METHOD FOR TESTING SOLID PROPELLANT ROCKET ENGINE CHARGES FASTENED TO THE BODY Russian patent published in 2022 - IPC F02K9/96 

FIELD: rocket technology.

SUBSTANCE: invention relates to rocket technology and can be used in regular and accelerated tests of large-sized charges fastened to the body in rocket systems for various purposes, operated on mobile carriers of automobile, railway and aviation types. The proposed test method includes sequential exposure to static temperature and dynamic vibration forced loads. At the same time, full-scale charge tests are carried out after the end of the guaranteed service life (GSL), provided that the structural integrity of the specified charge is confirmed by the results of standard flaw detection of the charge-case system, the level of static and dynamic loads is selected from the conditions simulating loading modes during subsequent normal operation during the designated service life (DSL) after the end of the guaranteed service life. After exposure to forced loads, a static boost of the charge is carried out, the maximum pressure level of which is selected from the condition of equality of the safety margins in the charge channel zone during boost and at the end of the normal operation stage during the DSL period after the end of the guaranteed service life.

EFFECT: invention provides testing of charges of solid propellant rocket engines bonded to the body, carried out to confirm the possibility of extending the GSL for the period of the assigned service life, which has increased reliability due to the modeling of strength performance parameters not only in the area of ​​bonding with the body, but also in the area of ​​the charge channel, as well as creating conditions that provide the possibility of varying the pressure value at the stage of final loading in a model test.

3 cl, 2 dwg