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Gust-tunnel investigation of a wing model with semichord line swept back 30 degrees

Description: Report presenting tests in the gust tunnel of the 30 degree sweptback wing model to provide information on some of the problems encountered in the prediction of gust loads for airplanes incorporating swept wings. The results indicate that within the scope of the data and the values of gradient distance investigated, the maximum acceleration increment depends on the slope of the lift curve of an equivalent straight wing multiplied by the cosine of the angle of sweep and on the effect of gradual … more
Date: January 1949
Creator: Reisert, Thomas D.
Partner: UNT Libraries Government Documents Department
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Frequency of occurrence of critical gust loads on overloaded airplanes

Description: Report presenting statistical gust-frequency data used to determine the effect of overloading an airplane on the frequency of occurrence of gust loads that stress the airplane to or above its design applied bending moment. The analysis was made for three transport-type airplanes operating at cruising power with overloads varying from 0 to 50 percent of the design gross weight. The probability of structural failure was found to increase rapidly with overload.
Date: March 1945
Creator: Reisert, Thomas D.
Partner: UNT Libraries Government Documents Department
open access

Tests of a 1/17-scale model of the XBDR-1 airplane in the NACA gust tunnel

Description: Report presenting tests in the gust tunnel on a scale model of the XBDR-1 airplane to verify the calculated effective gust factor. Tests were made for three gust shapes, one forward velocity, and one wing loading. The test results and analysis were in good agreement and the results of the analysis indicated that there was an appreciable change in effective gust factor for the center-of-gravity movement considered.
Date: February 1944
Creator: Reisert, Thomas D.
Partner: UNT Libraries Government Documents Department
open access

Gust-tunnel investigation of the effect of a sharp-edge gust on the flapwise blade bending moments of a model helicopter rotor

Description: Report presenting investigations in the gust tunnel to determine the effects of a sharp-edge vertical gust on the blade flapwise vibratory bending moments of small model rotors having either fixed-at-root or teetering blades. Both rotor configurations were tested up to a tip-speed ratio of about 0.35. Results regarding frequency diagrams and strain records, fixed-at-root condition, teetering condition, effect of rotor speed, and comparison of mean and vibratory blade bending moments are provide… more
Date: August 1955
Creator: Reisert, Thomas D. & Maglieri, Domenic J.
Partner: UNT Libraries Government Documents Department
open access

Gust-Tunnel Investigation to Determine Effects of Center-of-Gravity Position on the Gust Loads of a Delta-Wing Model With Leading Edge Swept Back 60 Degrees

Description: Report presenting an investigation to determine the effects of center-of-gravity position on the gust loads of a delta-wing model with the leading edge swept back 60 degrees. A 15-percent change in the center-of-gravity position on the mean geometric chord produced a 7.5-percent change in load for the model in a sharp-edge gust and a 35-percent change in load in a gust with a 6.5 chord gradient distance.
Date: June 5, 1953
Creator: Reisert, Thomas D. & Maglieri, Domenic J.
Partner: UNT Libraries Government Documents Department
open access

An analysis of the fatigue life of an airplane wing structure under overload conditions

Description: From Introduction: "Fatigue life expectancy in normal transport operations was investigated in reference 1 and was found to be of equal importance with single-gust life. The effect of overload operation of transport airplanes on the probability of encountering single critical gusts was investigated in reference 2 and the frequency of critical gusts was found to increase rapidly with overload. The effect of overload operation on fatigue strength, however, has not heretofore been evaluated, hence… more
Date: February 1946
Creator: Putnam, Abbott A. & Reisert, Thomas D.
Partner: UNT Libraries Government Documents Department
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