DEVELOPMENT OF A DISPLAY STORAGE TUBE TO BE USED AT HIGH TEMPERATURES
Abstract
The environmental testing program was continued. A tube was heated to 120 C for 2 hours, then tested with normal operating voltages while maintained at this temperature. Writing, storage, and erasure could be accomplished with no observable change from room temperature operation. Thus it seems that the high temperature operation requirement can be met. Two tubes, with ba es potted in flexible epoxy, were tested in the altitude chamber. At conditions simulating 76,000 ft altitude, full voltages were pplied and less than 1 microampere leakage current observed. Therefore it appears that the altitude requirem nt can be met. When the tube is supported in the vibration test mount in bulb resonances are found below 2000 cycles. This means that it is possible to monitor the input to the tube with an accelerometer attached permanently to the test mount, and that it is not necessary to cement an accelerometer to each tube to be tested. Two tubes successfully passed the 20 G non-operating shock test, with both 11 millisecond and 32 millisecond shock duration. No deterioration of their operation was noted in subseqompression between the neck flare and the faceplate, no significant bulb resonances are found below 2000 cycles. This means that it is possible to monitor the input to the tube with an accelerometer attached permanently to the test mount, and that it is not necessary to cement an accelerometer to each tube to be tested. Two tubes successfully passed the 20 G non-operating shock test, with both 11 millisecond and 32 millisecond shock duration. No deterioration of their operation was noted in subsequent testing. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Jul 10, 1961
- Accession Number
- AD0260768
Entities
People
- R.p. Stone