Sounding Rocket Experiments
Posted: Thu Sep 13, 2012 10:58 pm
For the past two years I've taken part in a NASA/Space Grant funded program which involves launching a suborbital sounding rocket containing student-built payloads into space.
The nature of the experimental payloads is almost completely unrestricted; groups essentially pay for the real estate on board and NASA launches the rocket. It's the third time around for my group and we're running out of ideas. This time, I figured I'd ask SF for some suggestions.
The details:
2-stage suborbital rocket (up then down, no orbit)
20g acceleration first stage, 12g second stage
Mach 4.4 top speed
72 mile peak altitude
Available access to skin-mounted air ports and windows
7lb. payload weight
In the past my group has sent up accelerometers, thermometers, gyroscopes, geiger counters, and CO2 sensors. We want to try something entirely new this time.
Current ideas:
The payload compartment temperature sits around 100F while the skin reaches around 500F during the ascent. We are considering using a thermocouple/TEG array mounted on the skin to convert this temperature difference into electricity, to be stored and measured on the payload using a supercapacitor bank/batteries and a microcontroller. That's all well and good... but too simple to constitute a full experiment.
The air ports include a ram air intake and a Bernoulli exhaust. In the past we used these to bring in outside air to measure CO2 concentration. This time, we're considering running the air through a turbine and having it spin a small permanent magnet alternator. We could get maybe 10-15 seconds of power generation while the rocket moves through the lower atmosphere. Again, quite simple.
You might have noticed based on those ideas and our past projects that the end goal of these "experiments" is essentially useless. This program is really about the experience of getting from A to B, not so much about the real-world application of any useful information discovered. For example a CO2 sensor would have been infinitely better suited to a slow-moving weather balloon than a supersonic rocket. That said, your suggestions could be silly so long as they are somewhat worthwhile and somehow take advantage of the fact that they're on a rocket headed for space.
Throw some ideas out, simple or complex, and if it's something we can do and if, in fact, we get to launch again next summer, I'd be happy to send some memoirs "into space" and mail them to you.
The nature of the experimental payloads is almost completely unrestricted; groups essentially pay for the real estate on board and NASA launches the rocket. It's the third time around for my group and we're running out of ideas. This time, I figured I'd ask SF for some suggestions.
The details:
2-stage suborbital rocket (up then down, no orbit)
20g acceleration first stage, 12g second stage
Mach 4.4 top speed
72 mile peak altitude
Available access to skin-mounted air ports and windows
7lb. payload weight
In the past my group has sent up accelerometers, thermometers, gyroscopes, geiger counters, and CO2 sensors. We want to try something entirely new this time.
Current ideas:
The payload compartment temperature sits around 100F while the skin reaches around 500F during the ascent. We are considering using a thermocouple/TEG array mounted on the skin to convert this temperature difference into electricity, to be stored and measured on the payload using a supercapacitor bank/batteries and a microcontroller. That's all well and good... but too simple to constitute a full experiment.
The air ports include a ram air intake and a Bernoulli exhaust. In the past we used these to bring in outside air to measure CO2 concentration. This time, we're considering running the air through a turbine and having it spin a small permanent magnet alternator. We could get maybe 10-15 seconds of power generation while the rocket moves through the lower atmosphere. Again, quite simple.
You might have noticed based on those ideas and our past projects that the end goal of these "experiments" is essentially useless. This program is really about the experience of getting from A to B, not so much about the real-world application of any useful information discovered. For example a CO2 sensor would have been infinitely better suited to a slow-moving weather balloon than a supersonic rocket. That said, your suggestions could be silly so long as they are somewhat worthwhile and somehow take advantage of the fact that they're on a rocket headed for space.
Throw some ideas out, simple or complex, and if it's something we can do and if, in fact, we get to launch again next summer, I'd be happy to send some memoirs "into space" and mail them to you.
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