The tool paths are regenerated to suit the measured geometry and not the nominally generated CAD in a process known as adaptive machining.
#Blisk video cpa software#
After the part is scanned, an STL file can be passed to a CNC code generating software such as NX CAM. The quickest way to do this is by 3D scanning the product. Repair of blisk components is complex and first requires an accurate 3D representation of the component. Provided that the damage and wear are within thresholds set by the design authority, it is possible that the blisks can repaired. After parts have been in service in the engine, noticeable amounts of damage and wear will be observed.
Using 3D data, parts can be catalogued in this way, often called digital twin, allowing monitoring of the product through its life-cycle.īlisk repair using adaptive machining Įngine-run blisks pose their own set of unique requirements.
This has advantages of the speed of measurement compared to tactile devices, whilst collecting 3D data to relate back to design characteristics. Traditionally this has been achieved using tactile devices, like CMMs, but as geometries and requirements increase, the trend in modern factories is to carry out 3D scanning using systems like ATOS ScanBox. The measurement and inspection of blisks is crucial for guaranteeing engine performance carried out at the end of the manufacturing processes. Research is being conducted to produce them using friction welding of "near net" part shapes that are then machined down to the final blisk shape. Process General īlisks can be produced with several different manufacturing processes, including CNC milling, investment casting, electro chemical machining, 3D printing, or welding. Integrally bladed rotor blades must undergo rigorous harmonic vibration testing as well as dynamic balancing to an extremely high standard, since the natural damping of the dovetail attachment of a typical turbine blade is no longer present. Maintenance of this nature cannot be done on the flightline and often must be performed at a specialized facility.
#Blisk video cpa full#
Disadvantages Īny damage to integrally bladed rotor blades beyond minor dents requires the full removal of the engine so that the rotor may be replaced or, if possible, replacement blades welded on. Įfficiency improvements of up to 8% are possible.
#Blisk video cpa crack#
The elimination of the dovetail attachment found on traditional turbine blades eliminates a source for crack initiation and subsequent propagation. This eliminates the need to attach the blades to the disk (via screws, bolts, etc.), thus decreasing the number of components in the compressor, while at the same time decreasing drag and increasing efficiency of air compression in the engine. Instead of making bare compressor disks and attaching the blades later, blisks are single elements combining the two. The GEnx already uses blisks in some stages.Įngine manufacturer EDAC Technologies, now, Hanwha Aerospace USA is the number one global supplier of blisk and IBR manufacturing in the world. General Electric's Passport (formerly "TechX") engine uses blisks for both its main 52" fan as well as for 5 of its 10 high pressure turbine stages.
PowerJet SaM146 engines used on Sukhoi Superjet 100s are also equipped with blisks.
Įngine manufacturer CFM International is using blisk technology in the compressor section of its Leap-X demonstrator engine program, which has completed full-scale rig testing. The F-35B variant of the Joint Strike Fighter uses blisks to achieve short take-off and vertical landing. Examples include the Rocketdyne RS-68 rocket engine and the General Electric F110 turbofan. Since then, its use has continued to increase in major applications for both compressors and fan blade rotors. It was first used by Sermatech-Lehr (now known as GKN Aerospace ) in 1985 for the compressors of the T700 helicopter engine.
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