Publication Date:
2013-08-31
Description:
Space Station Freedom requires the transmission of high power and signals through three different rotational interfaces. Roll ring technology was baselined by NASA for rotary joints to transfer up to 65.5 kW of power for 30 years at greater than 99 percent efficiency. Signal transfer requirements included MIL-STD-1553 data transmission and 4.5 MHz RS250A base and color video. A unique design for each rotary joint was developed and tested to accomplish power and signal transfer. An overview of roll ring technology is presented, followed by design requirements, hardware configuration, and test results.
Keywords:
SPACECRAFT PROPULSION AND POWER
Type:
NASA. Lewis Research Center, The 28th Aerospace Mechanisms Symposium; p 35-50; NASA-CP-3260
Format:
application/pdf
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