Engineering Flight Test of the CH-37B
Final rept. 5 Sep 1962-27 May 1963
ARMY AVIATION SYSTEMS TEST ACTIVITY EDWARDS AFB CA
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Engineering flight tests were conducted on the CH-37B to determine the effects of the changes from the CH-37A configuration on the performance and stability and control characteristics. The program consisted of 29 hours of flight testing. The test aircraft U.S. Army SN 54-0998 was modified from a CH-37A to a CH-37B by the incorporation of the following major changes Installation of Automatic Stabilization Equipment ASE Relocation of the horizontal stabilizer to a position opposite the tail rotor Installation of larger-capacity oil tanks Replacement of the split cargo door with a sliding cargo door. The performance data obtained during this test were compared with those presented in report Limited Evaluation of the H-37A Equipped with Wide Chord Blades AFFTC-TR-59-14. A comparison of the level flight performance data revealed that no significant differences existed that would make necessary revisions of the Operators Handbook TM-55-1520-203-10.