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Standard

End Drive Adapters - Balancing Error Analysis

2017-10-24
WIP
AIR6967
This SAE Aerospace Information Report is to supplement content from ARP4163 pertaining to error analysis on the use of multiple drive adapter applications, on both vertical and horizontal balance machines. This new Aerospace Information Report will serve as a practical resource that offers guidance to the Machine Operator and Process Engineer.
Standard

Proper use of Tooling Compensation

2018-01-05
WIP
AIR6972
To inform users on proper use, procedures and common errors when using electronic compensation for tooling on horizontal and vertical balancing machines
Standard

Balance Data Vector Math - Discussion and Usage

2017-10-16
WIP
AIR6964
Provide guidance on how balance machine vector data is captured and reported. Provide an understanding of how to transform balance machine vector data to alternate locations. Provide guidance on how vector imbalances may be used to evaluate and diagnose balance process performance.
Standard

Methods and Criteria for the Balancing of Gas Turbine Rigid Rotors

2015-06-25
WIP
AS6327
This document establishes process parameters for gas turbine rotor balancing. Adherence to the recommendations made herein will facilitate attainment of the usually high degree of accuracy and precision required for jet engine rotor balance.
Standard

Moment Weighing Systems – Single-Axis for Gas Turbine Blade Moment Weight Measurement

2016-11-28
WIP
ARP6914
The scope of these standards will relate to single-axis moment scales only. Topics covered include dimensional characteristics of single-axis moment scale interfaces, general tooling requirements, scale and tooling accuracy, and display instrument accuracy requirements. Additionally, general guidelines for qualification of equipment and tooling are included, as are general requirements for single-axis blade distribution software.
Standard

Balancing Machines - Tooling Management, Audit, and Control

2015-12-21
WIP
ARP6898
The goal of this new document is to provide criteria for managing, auditing, and controlling the use of rotating balancing tooling and associated support tools. A variety of subjects will be addressed including serialization and marking requirements, critical inspection criteria, performance tracking through tooling compensation trend analysis, handling of gage standards (rotor simulators, master blades, dummy blades, etc.), recommendations for periodic and preventive maintenance intervals, test recommendations to evaluate rotating tooling performance, requirements for traceable measures (such as torques, runouts, eccentricity, etc.), repeatability characterization, and criteria for return to service.
Standard

Vertical Dynamic Balancing Systems – Isolating Repeatability Issues in Challenging Applications

2021-05-26
WIP
ARP8911
This new Aerospace Recommended Practice will serve as a practical resource that offers guidance to both the machine operator and Process Engineer for isolating the source(s) of non-repeatability in measured unbalance data. The content of this standard addresses: • Vertical Dynamic Machine Capability to achieve the specified unbalance tolerances and repeat within those tolerances • Tooling Capability to repeat within the specified unbalance tolerances • Rotor characteristics that may preclude repeating within the required unbalance tolerances.
Standard

Design Criteria for Balancing Machine Tooling

2012-12-17
CURRENT
ARP1382A
This document recommends general designs, tolerances, limits of application and suitable tooling, fixtures and accessories for mounting and driving jet engine rotors on horizontal and vertical balancing machines.
Standard

DESIGN CRITERIA FOR BALANCING MACHINE TOOLING

1995-10-01
HISTORICAL
ARP1382
This document recommends general designs, tolerances, limits of application and suitable tooling, fixtures and accessories for mounting and driving jet engine rotors on horizontal and vertical balancing machines.
Standard

Periodic Surveillance Procedures for Horizontal Dynamic Balancing Machines

2012-12-17
HISTORICAL
ARP1340A
This document specifies those requirements and procedures for periodic tests to insure maintenance of balance machine capabilities for balancing jet engine components. It will specify: (a) Requirements for tests (b) Calibration tests (c) Residual unbalance and accurate angle and amount indication tests (d) Plane separation test (e) End-drive system unbalance disturbance test
Standard

PERIODIC SURVEILLANCE PROCEDURES for HORIZONTAL DYNAMIC BALANCING MACHINES

2002-12-16
HISTORICAL
ARP1340
This document specifies those requirements and procedures for periodic tests to insure maintenance of balance machine capabilities for balancing jet engine components. It will specify: (a) Requirements for tests (b) Calibration tests (c) Residual unbalance and accurate angle and amount indication tests (d) Plane separation test (e) End-drive system unbalance disturbance test
Standard

PERIODIC SURVEILLANCE PROCEDURES FOR VERTICAL, STATIC, BALANCING MACHINES

2002-12-16
CURRENT
ARP1342
This document specifies those requirements and procedures for periodic tests to insure maintenance of balancing machine capabilities for balancing jet engine components. It will specify: (a) Requirements for tests. (b) Calibration tests. (c) Residual unbalance and accurate angle and amount indication tests. (d) Static-couple separation test.
Standard

Balance Machine Bode Plot Interpretation

2017-10-16
WIP
AIR6965
Provide a fundamental understanding of reason for completing a bode plot on the balance machine. Discuss potential causes of a resonance within the balance process. Discuss the basis for the WN^2 requirement and how it pertains to the bode plot. Provide guidelines for the usage and interpretation of the bode plot.
Standard

Horizontal Balancing Systems - Isolating Repeatability Issues in Challenging Applications

2023-06-05
CURRENT
ARP6911
This SAE Aerospace Recommended Practice will serve as a practical resource that offers guidance to both the machine operator and process engineer for isolating the source(s) of non-repeatability in measured unbalance data. The content of this standard addresses: Machine capability to achieve the specified unbalance tolerances and repeat within those tolerances. Tooling capability to repeat within the specified unbalance tolerances. Rotor characteristics that may preclude repeating within the required unbalance tolerances.
Standard

BALANCING EQUIPMENT FOR JET ENGINE COMPONENTS COMPRESSORS AND TURBINE - ROTATING TYPE FOR MEASURING UNBALANCE IN ONE OR MORE THAN ONE TRANSVERSE PLANES

1972-07-01
HISTORICAL
ARP6239A
This document specifies those requirements of balancing equipment which make it suitable for the subject class of work. It will specify: (a) Sensitivity, (b) Accuracy of indications of amount and angle of unbalance, (c) Ability to separate the Dynamic Unbalance into two planes and to separate Static and Couple Unbalance, (d) Machine capacity relating to weight and physical dimensions of the rotors which can be balanced, (e) Balancing speed of rotation, (f) Standard balancing machine drive adapter flange dimensions, (g) Standard shroud mounting pads, (h) Power requirements.
Standard

STATIC BALANCING EQUIPMENT FOR JET ENGINE COMPONENTS COMPRESSOR AND TURBINE - ROTATING TYPE FOR MEASURING UNBALANCE IN ONE TRANSVERSE PLANE

1975-01-01
HISTORICAL
ARP588A
This ARP specifies those requirements of balancing equipment which make it suitable for the subject class of work. It specifies: a Sensitivity b Accuracy of indication of amount and angle of unbalance. c Ability to measure static unbalance unaffected by couple unbalance. d Machine capacity relating to weight and physical dimensions of the rotors which can be balanced. e Balancing speed of rotation. f Standard balancing machine drive adapter flange dimensions. g Power requirements.
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