Nick's Search for Streaming Time in Hobby Rocket Engines

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Discussion Overview

The discussion revolves around the concept of "streaming time" in the context of testing hobby rocket engines, specifically focusing on how to record time at certain intervals during thrust tests. Participants explore methods for tracking rocket performance and the implications of changing mass during fuel consumption.

Discussion Character

  • Exploratory
  • Technical explanation
  • Debate/contested

Main Points Raised

  • Nick seeks information on how to obtain "streaming time" for recording intervals during thrust tests of hobby rocket engines.
  • One participant asks for clarification on whether Nick intends to record the rocket's position over time to derive acceleration, noting that acceleration changes as fuel burns off.
  • Another participant mentions searching for Ham Radio Telemetry options for model rockets but found limited information, referencing a friend involved in model rocket telemetry.
  • A later reply suggests the possibility of using a GPS receiver/recorder on a rocket to create 3-D tracks, inspired by telemetry used in dirtbiking.

Areas of Agreement / Disagreement

Participants have not reached a consensus on the best method for recording streaming time or the specifics of telemetry applications in this context. Multiple viewpoints and approaches are presented without resolution.

Contextual Notes

The discussion lacks detailed assumptions about the technical requirements for recording time intervals and the specific telemetry methods applicable to hobby rockets. There are also unresolved questions regarding the feasibility of suggested methods.

Who May Find This Useful

Individuals interested in hobby rocketry, telemetry applications, and those exploring methods for measuring thrust and acceleration in experimental rocket designs may find this discussion relevant.

capslockroxx
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Hello, I am building a device that tests the maximum thrust of hobby rocket engines, and I need to know if there is any way to get "streaming time." Time that is recorded at certain intervals. Can someone give me a link?

Thanks!
~Nick
 
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capslockroxx said:
Hello, I am building a device that tests the maximum thrust of hobby rocket engines, and I need to know if there is any way to get "streaming time." Time that is recorded at certain intervals. Can someone give me a link?

Thanks!
~Nick

Need a little more info in order to help. Do you mean you want to record the rocket's position as a function of time in order to calculate backwards to the acceleration?

Keep in mind too that the acceleration of the rocket will change as its mass goes down as the rocket fuel burns off. If you are looking to test max thrust, that is probably best done in a fixed horizontal test fixture.
 
I did some searching on Ham Radio Telemetry for model rockets. Didn't find much. I do have a friend in KC that plays with model rocket telemetry. W0AFQ
 
dlgoff said:
I did some searching on Ham Radio Telemetry for model rockets. Didn't find much. I do have a friend in KC that plays with model rocket telemetry. W0AFQ

Interesting angle -- I didn't think of that. I have some dirtbiking friends who can play back their rides on Google Earth maps of the terrain. Very, very cool. With a GPS receiver/recorder on a rocket, they should be able to play back some cool 3-D tracks over Google Earth pics...
 

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