Normal accelerations and operating conditions encountered by a helicopter in air-mail operations

Almer D. Crim, Marlin E. Hazen
naca-tn-2714
Jun 1952


An analysis is presented of the normal accelerations and operating conditions encountered by a single-rotor helicopter engaged in air-mail operations in the vicinity of Los Angeles and its suburbs. Date were obtained for 14 months of operation, from May 1950 through June 1951, and represent 1,691 flights (253 hours of flying time).

An Adobe Acrobat (PDF) file of the entire report:
http://naca.central.cranfield.ac.uk/reports/1952/naca-tn-2714.pdf