Unique AOP Features
Production efficiencies are achieved by always producing optimal, straight engine core builds on the first pass, shortening assembly times, eliminating rebuilds, eliminating test cell rejects due to vibration and substantially reducing part replacement and repair. The straight, optimal builds coupled with fully-seated parts and alignment of the dynamic/static structures contribute to significant improvement in engine performance as measured in the test cell and on-wing. Axiam's unique features include:
- STRAIGHT BUILDS
Straight builds start with highly accurate part measurement data. As each part in an assembly is measured (rotors, shaft, blades, casing, bearings & seals), a predictive stacking software model identifies the straightest possible build for that combination of parts.
- OPTIMAL BUILDS
Optimal builds are generated in the predictive software model by orienting the parts about their actual centerline of rotation and mathematically correcting for any part distortion. Axiam does not build by offsetting successive parts' high points at the edge of each part, an engine manual procedure that results in relatively "bowed" rotor assemblies and sub-par engine performance.
- FULLY-SEATED PARTS
Fully-seated parts are achieved through the even application of hydraulic pressure to the rotor assembly using Axiam's proprietary assembly tooling (build tables). The bolting of the assemblies secures the seating while the assembly remains under pressure in the tooling. Assemblies built with Axiam's methodology do not experience rotor shift in the test cell, preventing test cell rejects due to excessive vibration.
- PROPRIETARY ASSEMBLY PROCEDURES
Proprietary assembly procedures are developed to achieve process repeatability, optimal and straight builds. These procedures are developed and tested in Axiam's laboratory together with its tooling and software. A critical objective of the procedures, software and tooling is to control assembly variables while not introducing any new variables.
- FIRST PASS SUCCESS
First pass success means Axiam's actual builds match the predictive build model on the first attempt, thus dramatically reducing overall engine core assembly time. The time to measure parts, assemble the parts in Axiam's build table, and to compare the actual build to the optimal build model is the same for each set of parts.
- STRUCTURAL ALIGNMENT
Structural alignment of the engine core dynamic and static structures is achieved in the integrated software build models from part measurement data. The predictive build model represents an aligned, straight build. It is essential that the raw measurement data be as accurate and error-free as possible. The sophisticated applications software is designed so as not to introduce further error to the data.