As I watched the Falcon 9 Heavy launch today just before liftoff I heard the usual words...... And now the onboard computer has taken control of the rocket. It got me wondering about the type of computer being used. What type of bus, how many boards being used, all the connections for sensors, valves, monitoring. What are they using as a main processor. Did they design it from the ground up or use a model from earlier rocket launches and modify it.
Mike Hoblinski N6IMF
And did it start to do an Up-Date 2 minutes before launch!?
UG!
Joe WB9SBD Sig The Original Rolling Ball Clock Idle Tyme Idle-Tyme.com http://www.idle-tyme.com On 2/6/2018 5:58 PM, Mike Hoblinski wrote:
As I watched the Falcon 9 Heavy launch today just before liftoff I heard the usual words...... And now the onboard computer has taken control of the rocket. It got me wondering about the type of computer being used. What type of bus, how many boards being used, all the connections for sensors, valves, monitoring. What are they using as a main processor. Did they design it from the ground up or use a model from earlier rocket launches and modify it.
Mike Hoblinski N6IMF _______________________________________________ Sent via AMSAT-BB@amsat.org. AMSAT-NA makes this open forum available to all interested persons worldwide without requiring membership. Opinions expressed are solely those of the author, and do not reflect the official views of AMSAT-NA. Not an AMSAT-NA member? Join now to support the amateur satellite program! Subscription settings: http://www.amsat.org/mailman/listinfo/amsat-bb
According to the user manual ( http://www.spacex.com/sites/spacex/files/falcon_9_users_guide_rev_2.0.pdf): - Avionics Falcon launch vehicle avionics, and guidance, navigation and control systems use a fault-tolerant architecture that provides full vehicle single-fault tolerance and uses modern computing and networking technology to improve performance and reliability. The fault tolerance is achieved either by isolating compartments within avionics boxes or by using triplicated units of specific components. Both the first and second stages host their own multiple redundant lithium-ion batteries to minimize the complexity of the electrical interface.
So whatever they are using they have 3 of them on board.
On Tue, Feb 6, 2018 at 7:01 PM, Joe nss@mwt.net wrote:
And did it start to do an Up-Date 2 minutes before launch!?
UG!
Joe WB9SBD Sig The Original Rolling Ball Clock Idle Tyme Idle-Tyme.com http://www.idle-tyme.com
On 2/6/2018 5:58 PM, Mike Hoblinski wrote:
As I watched the Falcon 9 Heavy launch today just before liftoff I heard the usual words...... And now the onboard computer has taken control of the rocket. It got me wondering about the type of computer being used. What type of bus, how many boards being used, all the connections for sensors, valves, monitoring. What are they using as a main processor. Did they design it from the ground up or use a model from earlier rocket launches and modify it.
Mike Hoblinski N6IMF _______________________________________________ Sent via AMSAT-BB@amsat.org. AMSAT-NA makes this open forum available to all interested persons worldwide without requiring membership. Opinions expressed are solely those of the author, and do not reflect the official views of AMSAT-NA. Not an AMSAT-NA member? Join now to support the amateur satellite program! Subscription settings: http://www.amsat.org/mailman/listinfo/amsat-bb
Sent via AMSAT-BB@amsat.org. AMSAT-NA makes this open forum available to all interested persons worldwide without requiring membership. Opinions expressed are solely those of the author, and do not reflect the official views of AMSAT-NA. Not an AMSAT-NA member? Join now to support the amateur satellite program! Subscription settings: http://www.amsat.org/mailman/listinfo/amsat-bb
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Mike Hoblinski