Rigidizable Guide Tube
Improving the accuracy
and repeatability
A stable platform for repeatable inspection. GE Aerospace’s Fuel Nozzle Rigidizable Guide Tube (RGT) aids GEnx -1B and -2B customers with achieving quick inspections of the Aft Heat Shield. The RGT aligns and orients existing customer borescopes, providing a stable platform to obtain repeatable perpendicular views of the Aft Heat Shield, enabling an accurate assessment of the condition of the hardware.
A window into the future of inspection
Windows along the length of the RGT are aligned with the fuel nozzles, allowing the side view borescope tip a perpendicular view of the aft heat shields. Fuel nozzles are viewable using 2 opposite borescope ports, enabling a full fuel nozzle set inspection in less than 1 hour.
Borescope
compatibility
Compatibility with 6mm borescopes from leading manufacturers, with side facing measurement and non-measurement tips.
GEnx Fuel Nozzle Inspection with and without RGT
Benefits
With FN RGT
Without FN RGT
Process time
Less than 1 hour
Significant Inspection Required ~4hrs
Inspection ability
All Fuel Nozzles
(The 2 in front of the borescope ports
can be easily seen using the borescope alone)
(The 2 in front of the borescope ports
can be easily seen using the borescope alone)
All Fuel Nozzles
Repeatability
Repeatable positioning enabling rapid location of Fuel Nozzles.
Repeatable orientation and alignment providing a perpendicular view of the fuel nozzles
Repeatable orientation and alignment providing a perpendicular view of the fuel nozzles
Very limited and inspector dependent
Calibration and servicing
Return to base servicing required once a year (or after 50 engine deployments).
Regular calibration intervals
