Advantages

Thermodynamic analysis of the Legacy Engine predicts-

• An increase in efficiency of approximately 16% over an equivalent crankshaft engine
• Potential for greater than 1.6 hp/lb
• Potential for 200 hp/ft3 of installed volume

The predicted power density for the engine coupled with a greatly reduced installed volume, would enable an innovative approach to optimizing platform design.

The Legacy Engine could radically change the face of heavy fuel engine applications in a representative selection of multi-service programs.

Identified advantages over alternative engine technologies:

• Power density
  - Nine firings per revolution
  - Small, lightweight package
  - Potential for greater than1.6 hp/lb
• High torque at low speed
  - Designed operating speed <1500 rpm
  - Reduced wear
  - Potential for direct drive
• Efficiency
  - Predicted 16% increase in thermal efficiency
  - Deployment packaging efficiencies
  - BSFC (lb/hp-hr) - 0.28
• Manufacturability
  - Low number of parts - 12 major components
  - Simple geometry
  - Low production cost
• Inherently balanced
  - No eccentric or reciprocating motion
  - Less vibration
• Deployment advantages
  - Small thermal and acoustic signatures
  - Multiple fuels- JP8 and diesel
  - Shaft vertical or horizontal