QJ 3236-2005 in English

1 Scope

This standard specifies the test equipment, test procedures and data processing methods for measuring negative thrust of static firing test of solid rocket motor.

This standard is applicable to measurement of negative thrust of static firing test of solid rocket motor (hereinafter referred to as "motor").

2 Normative references

The following normative documents contain provisions which, through reference in this standard, constitute provisions of this standard. For dated reference, subsequent amendments to (excluding any corrections), or revisions of, any of these publications do not apply. However, parties to agreements based on this standard are encouraged to investigate the possibility of applying the latest editions of the standards indicated below. For undated references, the latest edition applies.

GJB 2365A-2004 Solid rocket motor—measuring method for static firing test
GJB 3387 Terms for rocket engine
QJ 1118A-1995 General requirements for the design, manufacturing and acceptance of test stands for solid rocket motor
QJ 2037A-1998 Safety technical requirements for static firing test of solid rocket motors
QJ 2576 Terminology for static firing test of solid rocket motor

3 Terms and definitions

For the purposes of this standard, the terms and definitions given in GJB 3387 and QJ 2576, as well as the following apply.

3.1
reversal nozzle
device that stops the main thrust of the motor and generates negative thrust

3.2
main thrust
thrust generated when the main nozzle of the motor works
3.3
reverse thrust
thrust generated opposite to the main thrust when reversal nozzle works

3.4
preloading force
force in the same direction as the main thrust applied to the force measuring component in advance before the motor is subjected to static test

Foreword i
1 Scope
2 Normative references
3 Terms and definitions
4 Principle
5 Negative thrust measuring device
6 Measurement requirements
7 Test procedures
8 Data processing