ProductsSupportDealer LocatorDownloadsContact UsCompany
 |
 |
|
Will my PCD7100, PXE7300, or PAV80
systems hold up in an airplane? |
Low Temperature Ground Survival and Short-Time Operation
The PCD7100 was tested for both storage and operational performance at temperature extremes that would make any human unhappy. With the unit off, the temperature was stabilized at -55º C (-67°F). This temperature is maintained for 3.5 hours. Then the unit was tuned on and the temperature ramped from -55º C. to -20º C (-4°F). at a rate of 2º C/min. After the internal temperature is stabilized, the PCD7100 was operated at a maximum duty cycle (100%) for ½ hour. The intercom and CD worked, all buttons and knobs operated freely. Although the CD did not eject at –20 (condensation froze), it ejected as soon as the internal temperature reached freezing at 0° C.
High Temperature Ground Survival and Short-Time Operation |
Some people wonder if the PCD7100 can withstand the aircraft environment. The answer is YES!
Because the PCD7100 was designed from the beginning as an aircraft system, PS Engineering was able to apply all of our experience in avionics design to create a robust product. PS Engineering tested the system in accordance with RTCA DO-160D, the latest internationally accepted environmental standard. A unit was subjected to temperature, humidity, altitude and vibration extremes, as well as electrical torture, and some lightning impulses. |
The following Helicopter Frequencies were obtained from Bell Helicopter Textron:
|
|
Most folks are concerned with vibration. We were too.
First, we tested to the TSO requirements. Among other tests, we applied a vibration from 5 to 17 Hz with amplitude of 0.100 inches Peak to Peak, varied at 1.0 octave per minute rate. From 15 to 55 Hertz with an amplitude of 0.01 inches, double amplitude at rate of 1.0 octave per minute, and 55 to 500 Hz with an amplitude of 1.5G at a rate of one octave per minute. Vibration and operation was continued for three hours. Then we dwelled on some of the most common vibration frequencies for helicopters. The helicopter frequencies were determined from Bell Model 206, one of the most popular helicopters into which this equipment will be installed. The amplitude on these frequencies was increased to determine the maximum vibration before the CD player began to skip. This occurred at 5.5 "g" !! The button LED lights were a blur.
|
 PCD7100 strapped to torture rack  Although, the PCD7100 won't play upside down, on its side, or in a straight-up climb, it won't be hurt by these maneuvers, either. |
Copyright 1996-2008 PS Engineering, Inc. All rights reserved