Similar to the CF6-80C2/-80E1, the GE90 standard uses a two-stage HPT, a feature necessary to extract enough power to turn the engine’s large fan. The GE90 standard’s bypass ratio is 8.7:1.

testing of the GE90 dual annular combustor at takeoff. Detailed distribution of cooling flow is based on anal sis models of the serpentine passage cooling circuits. To match the cycle flow, the HPT nozzle thr

2023年9月5日 · The FAA proposes to adopt a new airworthiness directive (AD) for certain General Electric Company (GE) Model GE90-90B, GE90-94B, GE90-110B1, and GE90-115B engines. This proposed AD was prompted by a manufacturer investigation that revealed certain high-pressure turbine (HPT) stage 1 disks, HPT...

The FAA reviewed GE GE90–100 Service Bulletin (SB) 72–0914, dated January 25, 2023 (GE GE90– 100 SB 72–0914); which provides the affected part and serial numbers of the HPT stage 2 disks, forward HPT rotor seals, and stages 7–9 compressor rotor spools; and specifies replacement instructions for the HPT stage 2 disks, forward HPT rotor ...

2024年4月29日 · The FAA is adopting a new airworthiness directive (AD) for certain General Electric Company (GE) Model GE90-110B1 and GE90-115B engines. This AD was prompted by a report of an aborted takeoff due to left engine failure caused by liberation of the interstage high-pressure turbine (HPT) rotor seal rim.

Remove the air high pressure turbine compressor (HPTC) manifold (40-240, 75-00-00, Figure 2) from the HPT stator case at the 1:00 and 2:00 o'clock positions. Refer to the GE90-100 EM, 72-00-02, DISASSEMBLY 002, Subtask 72-00-02-030-122 and do as follows:

The HPT rig geometry is shown in Figure 6. It is a 3/a scale cooled rig of the actual GE90 HPT which was designed and built at GE Aircraft Engines and has been tested

Get access to the HPT stage 2 nozzle and blade interface area (Figure 1). Do a BSI of the HPT stage 2 nozzle and stage 2 blade interface area as follows: spection of all the HPT stage 2 blade forward platforms for rub marks or evidence of contact with the HPT stage 2 nozzle angel wings. Refer to Figure 1 for details an efore the next flig

The GE90 has four main modules. These are the fan and low pressure compressor (LPC), high pressure compressor (HPC), high pressure turbine (HPT) and combustor, and low pressure turbine (LPT).

Similar to the CF6-80C2/-80E1, the GE90 standard uses a two-stage HPT, a feature necessary to extract enough power to turn the engine’s large fan. The GE90 standard’s bypass ratio is 8.7:1.