Testing a modern turboprop propulsion system

Allison Gas Turbine provides the Propulsion System Package (PSP) for the Saab Zoo0 regional turboprop aircraft. The PSP includes the GMA 2100 engine, a modern turboprop engine, and the nacelle comprised of cowls, mounting structure, and systems. Since it is responsible for providing the PSP, Allison will test the PSP as a unit prior to flight test. Allison possesses unique turboprop test facilities that allow testing using the actual engine, nacelle, and propeller hardware as an integrated unit. Allison has modified one of its turboprop test stands to allow installation and testing of an actual Saab 2000 nacelle. In order to maximize the facility's availability, a two-phase testing program was put into place. The first phase uses a nacelle configured similar to the production aircraft but with various material/hardware substitutions. The second phase uses aircraft production hardware. Both nacelles maintain the aircraft interfaces and configuration allowing maximum compatibility.