This SAE Aerospace Information Report (AIR) establishes the specifications and descriptions of the critical componentsand operational guidelines for the standard hydraulic impulse machine for testing hydraulic hose assemblies, tubing, coils,fittings and similar fluid system components.This revision to the AIR1228 provides a description of a system that meets the requirements for specifications including:AS603, AS4265, and ARP1383. This impulse system utilizes closed loop servo control with specifically generatedcommand signal waveforms.Data accuracy and integrity are emphasized in this revision. Knowing the uncertainty of the pressure measurement isimportant whether using a resonator tube system, as described in the original release of this document, or a closed-loopsystems as described in this release. The accuracy of the data measurement system and consistency of the pressurewaveform are fundamental to test validity, regardless of the system type. This is discussed in more detail in Section 5.The standard impulse test system is established for the following purposes:A. As referee in the event of conflicting data from two or more nonstandard impulse machines. Such a referee systemmight be built by an impartial testing activity.B. A design guide for future test systems being built by manufacturers and users, or the upgrading of present systems.C. A design guide for higher pressure test systems or special purpose machines being designed.It is not the intention of this document to obsolete present resonator type machines. The specification for the resonatortype machine is available in the original release of this document.A simple block diagram of the revised system is shown in Figure 1.
SAE AIR1228A-2009 history
2014SAE AIR1228A-2014 Standard Impulse Machine Equipment and Operation
2009SAE AIR1228A-2009 (R) Standard Impulse Machine Equipment and Operation
2007SAE AIR1228-2007 Standard Impulse Machine Equipment and Operation
1972SAE AIR1228-1972 Standard Impulse Machine Equipment and Operation