Historical Technology Overview
Wide-Band Micro-miniature Tri-axial Accelerometer Unit
The Wide-Band Micro-Miniature Tri-Axial Accelerometer Unit (WB MicroTAU) system is a wireless, high-speed data acquisition network for dynamic acceleration sensing and recording applications. The system includes WB MicroTAU Remote Units, a WB MicroTAU Receiver Unit, and the Graphical User Interface (GUI).
The WB MicroTAU Remote Unit is a small, battery-powered, autonomous, wireless device designed for trigger initiated acquisition and recording of high-speed acceleration data. The units instrument three external accelerometers, and each unit can be programmed for a triggered acquisition event. Download and event setup commands are issued either wirelessly or through a standard USB connection from a Graphical User Interface running on a PC.
The WB MicroTAU system was designed for NASA to monitor the dynamic behavior between the SSME (Space Shuttle Main Engine) feedlines and the SSME low-pressure turbo-pump that produced the cracks that temporarily grounded the Shuttle fleet in the summer of 2002. The WB MicroTAU is intended to take tri-axial accelerometer data on and around the SSME LH2 and LO2 feedlines and their supporting brackets. STS-114 is scheduled to be the first flight of WB MicroTAU hardware (launch TBD).
- Sample Rate: 20kHz
- 3 External accelerometers per unit
- 1 External RTD per unit
- Approximate Size: 6.9cm x 5.3cm x 3.3cm
View the full Wide-Band MicroTAU Technology Profile (WB_MicroTAU.pdf)
In 2003, NASA utilized the WB MicroTAU system to monitor a series
of foam impact tests simulating the launch impact event on the
Space Shuttle Columbia in early 2003.
Click here for more information about this WB MicroTAU application.