Robinson R44 Raven II — Performance

This report details the use of the NASA Design and Analysis of Rotorcraft (NDARC) software tool to develop performance data for the Robinson R22 and R44 helicopters for the FAA’s Aviation Environmental Design Tool (AEDT). The document serves as a follow-up to previous RPM documentation and addresses the lack of sufficient performance data in the flight manuals of these helicopters. The report outlines methods for generating performance data, including fuel consumption and power requirements, based on the NDARC model. It emphasizes the importance of these helicopters in environmental modeling, as they represent a significant portion of the global helicopter fleet. The findings aim to improve the accuracy of helicopter performance modeling in AEDT.

• The Robinson R44 is powered by a Lycoming O-540 engine with a maximum continuous power rating of 245 HP.
• The R22 uses a Lycoming O-320-B engine with a maximum continuous power rating of 124 HP and a 5-minute takeoff rating of 131 HP.
• The R22 represents 12.6% of the global helicopter fleet and 21.2% of the AEDT helicopter fleet as of 2014.
• Fuel consumption data for the R22 at 100% MCP is approximately 0.008271 Kg/sec.
• The NDARC model provides a method for generating performance data for helicopters lacking sufficient information in their flight manuals.