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General Discussion => Q&A Section => Topic started by: AS_501 on 02/10/2023 12:10 am

Title: Levels of Engine Telemetry?
Post by: AS_501 on 02/10/2023 12:10 am
After watching the SH static fire, I realized a boatload of telemetry is transmitted from 30+ engines (same with FH).  Is there some kind of industry standard that defines the number of monitored engine parameters and telemetry channels?  For example, a Level 1 Telemetry Standard specifies "X" number (minimum) of parameters and channels, while a Level 2 Standard specifies "Y" parameters and channels, etc.

I'm curious how current engines compare (RS-25, Raptor, BE-4 etc.) in their range of telemetry measurements.  I'm assuming RS-25 has the most(?)
Thanks!
Title: Re: Levels of Engine Telemetry?
Post by: Jim on 02/11/2023 02:19 pm
no standard.  Up to each launch vehicle developer.
Title: Re: Levels of Engine Telemetry?
Post by: Redclaws on 02/11/2023 02:26 pm
After watching the SH static fire, I realized a boatload of telemetry is transmitted from 30+ engines (same with FH).  Is there some kind of industry standard that defines the number of monitored engine parameters and telemetry channels?  For example, a Level 1 Telemetry Standard specifies "X" number (minimum) of parameters and channels, while a Level 2 Standard specifies "Y" parameters and channels, etc.

I'm curious how current engines compare (RS-25, Raptor, BE-4 etc.) in their range of telemetry measurements.  I'm assuming RS-25 has the most(?)
Thanks!

Definitely not - nobody designs very many types of rocket engines (compared, to, say, cars), and honestly there aren’t that many designs in total even globally, plus there’s a lot of relative secrecy - so there’s no incentive for this sort of standard.  Car engines *sort of* do, but even there it’s not “this engine has level [X] monitoring”, they just have or dont have sensors in various according to the manufacturers desired amount of monitoring.