Lycoming DEL-120

The DEL-120 is an aircraft diesel engine with propeller speed reduction unit produced by Lycoming Engines. Using automotive technology and initially powering unmanned aircraft.[1] DEL-120 is a non-certified engine and is meant for military use only, there is no civil application of this engine.

DEL-120
Lycoming DEL-120 on MQ-1C Gray Eagle
Type Military Piston Diesel Aero-engine
National origin United States
Manufacturer Lycoming Engines
Major applications MQ-1C Gray Eagle
Produced 2013-present

Applications
  • General Atomics Improved MQ-1C Gray Eagle

Specifications

Data from Lycoming[2]

General characteristics

Components

Performance

  • Power output: Take-Off: 205 hp (153 kW), Max Continuous (90%): 180 hp (134 kW), both at 2101 propeller RPM
  • Specific power: 1.206 hp/cu in (54.9 kW/L)
  • Compression ratio: 16.5:1
  • Fuel consumption: 64.8 lb/h (29.4 kg/h) at Max Continuous
  • Specific fuel consumption: 0.36 lb/hp/h (220 g/kW/h) at Max Continuous, 0.345 lb/hp/h (210 g/kW/h) in Cruise (60% PLA, 1770 propeller RPM)
  • Power-to-weight ratio: 0.57 hp/lb (0.94 kW/kg)
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References
  1. Paul Bertorelli (March 25, 2014). "Lycoming Diesel Details". AVweb.
  2. "DEL-120". Lycoming Engines.
  3. "Lycoming's Diesel". Aviation Consumer. February 2015.
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