Page 2 - Combined_170_OCR

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characteristics. Also the accelerometer used was frequency limited to approximately

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0-5 1/2 cps so that data above 5 1/2 cps may be distorted and could be much higher l^v'el

than indicated, abeve-^T^H^ps.

As indicated in Figure 1, the vehicle vibration environment falls in a range

severe enough to be unacceptable by USAF standards and can be tolerated for only p

few minutes. Severe performance degradation occurs in this environment according

to rc-e V \, X and coordination as well as other physical performances are

reduced. As stated by F t £ -Z/;; these performance degradations are difficult

to measure but some data has been accumulated in a simulated pilots cockpit situation

relative to flying maneuvers and reading gages, etc.

It is recommended that future tests include higher frequency resolution

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accelerometers-and located in the seat cushion to measure spiral column inputs.

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