Elbit Systems’ Hermes 450 unmanned air vehicles (UAV) are being re-engined with the R902(W) engine by the Israeli Air Force (IAF).

The IAF is configuring the engine with enhancements to increase the type’s operational envelope.

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The new Wankel-design engine allows the Hermes 450 to deliver an improved endurance of more than 20 hours.

The engine generates less noise, which expands the range of missions that the tactical UAV can perform, Flightglobal reports, quoting sources.

The new engine has a larger combustion compartment, which enables it to deliver more than 70hp.

The engine is also equipped with electronic fuel control and a starter-alternator option to enable in-flight restart.

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