Use cases

HPM nickel-chromium wire strain gages were installed using VPG HG-1 cement. Elongation cable routes are protected with spotwelded heat-resistant foil. In total, 60 strain gages were used for dynamic test of the combustion chamber.

50 HPM nickelchromium wire strain gages were installed using HPM CC-2 cement. Dynamic test was performed at normal engine working cycle for 5 hours. Strain test was preceded by TSPM02 thermal indicator paint application to clarify the temperature in different zones of the combustion chamber.

An 8-channel telemetry system was used, implementing 8 strain gages installed in critical points of the blades. Dynamic test is carried out throughout entire engine test program (around 6 hours).

An 8-channel telemetry system was used, connecting 8 strain gages installed by 2-wire scheme on the turbine disc. Dynamic test is carried out throughout entire engine test program (around 6 hours).

8 HPM nickel-chromium wire strain gages were installed on the shaft with CC-2 ceramic cement and connected through 8 channel telemetry system. Dynamic test was performed for 6 hours throughout all working cycles of the engine. This was the third part of certification tests, also comprising test of turbine disk and blades.

HPM 3mm nickel-chromium wire strain gages were installed on each igniter with ceramic cement VPG HG-1. Temperature was controlled using custom-made chromel-alumel thermocouple with core diameter of 0.3 mm.