AeroTech Develops Drilling Adapter for Delays August 11, 2005 Web posted at: 12:11 PM EDT
(ROL Newswire) -- AeroTech has designed a Delay Drilling Adapter (DDA) that permits the adjustment of AeroTech 29 & 38mm high-power RMS-Plus delay elements using the CTI ProDAT 38mm delay drilling device.
Using the AeroTech DDA is simple. First, set the ProDAT tool for the desired number of seconds to be reduced from the delay. Then, insert the DDA into the tool and drop the RMS-Plus delay element into the well at the bottom of the DDA. Hold the delay in the DDA well with your finger, and rotate the adjustment tool for a few revolutions until the delay setting is complete. The delay element should be installed in the motor with the drilled end facing the propellant.
Because of a difference in delay propellant burning rates, the depth of drilling required per second of delay reduction is less when using the CTI device to drill AeroTech delays. A label on the AeroTech DDA translates the ProDAT settings to the equivalent RMS-Plus delay time reduction: -3 seconds reduction for CTI motor delays is -4 seconds for AeroTech RMS-Plus delays, -5 seconds reduction for CTI is -7 seconds for AeroTech, and -7 seconds reduction for CTI is -10 seconds for AeroTech. There is no equivalent calibration for the CTI -9 setting, as the maximum delay time for 29 & 38mm RMS-Plus reloads is currently 14 seconds.
It is recommended that AeroTech delays not be shortened to less than 4 seconds actual delay time. Users should keep in mind that pyrotechnic time delay tolerance may be up to +/- 20% of the stated value.
The AeroTech DDA (P/N T062705-1) is expected to be available from AeroTech's high-power RMS product dealers in late August, at a suggested retail price of $19.95.
Source: RCS Rocket Motor Components (RCS), Inc.