Microturbo TRI 60
turbojet engine for missiles, target drones, and UAVs
The Microturbo TRI 60 is a small, expendable turbojet engine developed for use in cruise missiles, target drones, and other small unmanned air vehicles. Variants of this engine produce from 3.5 to 5.3 kN (790 to 1,190 lbf) of thrust. The engine first ran in 1974.
Development and design
Tri-Axial
The TRI 60 engine was developed in the 1970s to meet the need for a small, inexpensive, reliable, and expendable jet engine for use in cruise missiles and other small unmanned air vehicles. This need was broken down into the key requirements for high production at low cost and a high thrust-to-weight ratio. The first generation of engines, the "tri-axial" engines, were named that way because they featured only three simple compressor sections. The engine overall only has 20 major components. These first engines, the "-1", "-2", and "-3" variants, were used in many different applications (list below in the "Variants" section).
The latest version of the tri-axial engine, the "-5" and the "-5+" variants are the only tri-axial models still in production. One significant change from the early models to these later ones is the use of an ECU to monitor the performance of the engine and adjust fuel flow accordingly.
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