Summary of acceleration and airspeed data from commercial transport airplanes during the period from 1933 to 1945

Walter G. Walker, Roy Steiner
naca-tn-2625
Feb 1952


Normal acceleration and airspeed data collected with NACA V-G recorders in transport airline operations from 1933 to 1945 are summarized and analyzed with respect to gusts and gust loads. The acceleration experienced in most operations equaled or exceeded the limit-gust-load-factor increment, on the average, twice (once positive and once negative) in 107 flight miles. The gusts experienced in most operations exceeded 33 feet per second, on the average, twice (once positive and once negative) in 107 flight miles. The loads experienced for several operations varied appreciably from average conditions. The predominating factor causing the variations in the load experience was the difference in the gust experience, with operating speeds in rough air being a secondary contributing or moderating factor.

An Adobe Acrobat (PDF) file of the entire report:
http://naca.central.cranfield.ac.uk/reports/1952/naca-tn-2625.pdf