Helicopter Maneuverability and Agility Design Sensitivity and Air Combat Maneuver Data Correlation Study
Final rept. Oct 1988-Dec 1990
UNITED TECHNOLOGIES CORP STRATFORD CT SIKORSKY AIRCRAFT DIV
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A helicopter maneuverability and agility MA study has been conducted to determine the characteristics of eight different helicopters. This study included a simulation evaluation, analysis of data from the U.S. Armys Air-to-Air Combat Tests AACT and a correlation of the two. The results validated previously developed MA design guidelines and design parameter sensitivities. The helicopters evaluated were the UH-60A, S-76A, AH-64A, AH-1S, OH-58A and SA-365N-1. The CH-53E and Soviet Mi-28 unclassified were also analyzed although no AACT data were available for them. The MA characteristics of these vehicles were assessed by flying detailed, blade element General Helicopter Flight Dynamics Simulation GenHel computer models through a series of nine discrete maneuvers. Selected flight test data from AACT II, III and IV were analyzed using a workstation to replay the data and generate synthetic out- of-cockpit views. A method for scoring the simulated maneuvers and the AACT engagements was devised. MA ratings for all of the subject aircraft were determined using the simulated maneuver scores. Correlation of the MA ratings to the AACT scores was very good with the winning air combat aircraft having the highest MA rating in four of the five engagement pairs analyzed. This study also produced a unique database employing a common simulation technology and evaluation methodology for all of the subject helicopters.