This time the focus was on the engine nacelle The Central Aerohydrodynamic Institute (TsAGI) continues to test a model of the import-substituted Russian airliner SJ-100. This time, experimental studies took place in the T-128 transonic wind tunnel, with the scientists focusing on the “wing-engine nacelle – pylon” combination. The half-model SJ-100 was tested in a transonic […]
This time the focus was on the engine nacelle The Central Aerohydrodynamic Institute (TsAGI) continues to test a model of the import-substituted Russian airliner SJ-100. This time, experimental studies took place in the T-128 transonic wind tunnel, with the scientists focusing on the “wing-engine nacelle - pylon” combination. [caption id="attachment_71139" align="aligncenter" width="650"] half-model SJ-100[/caption] The half-model SJ-100 was tested in a transonic wind tunnel We tested two such options: one from the aircraft developer (that is, from Yakovlev), and the second - proposed by the institute. In both cases, the researchers studied how the SJ-100's aerodynamic characteristics (specifically lift) changed depending on the powerplant configuration. Which option turned out to be better is unknown. It is only reported that the pylon confirmed its calculated characteristics. [caption id="attachment_71140" align="aligncenter" width="650"] half-model SJ-100[/caption] Let us remind you that the first two production SJ-100s should be delivered to Aeroflot before the end of this year.