One additional note, if possible, it's nice to stream that data in
real time via wireless. In the event of a CATO, all the data is
recorded on the ground and can be analyzed after the fact...

-d

On Fri, Jun 17, 2011 at 12:10 PM, Christopher Mullens
<christophermull...@gmail.com> wrote:
> "My takeaways:"
> " - 6DoF should consider hard-stops for the fins."
>
> Mechanical hard stops are already a feature of the current design
> " - We should consider treating Vision as its own category of projects.
> Documenting views on the way up is good for publicity, but I would
> like to propose that for the next launch we attempt to get cameras on
> every mechanical system."
> Although this would be very cool/useful, the spacial constraints of these
> assemblies are extremely tight it would be difficult to fit a camera in that
> could actually see anything meaningful.  That said, we have been talking
> about adding a redundant potentiometer or two that would be able to report
> and record any kind of mechanical failure/performance issue.
> Chris
> On Fri, Jun 17, 2011 at 11:28 AM, Benjamin Kaplin <ben...@gmail.com> wrote:
>>
>> Armadillo had two flights go bad on them recently. Here is a selection
>> of quotes and some ideas that struck me while reading their report.
>>
>> http://www.armadilloaerospace.com/n.x/Armadillo/Home/News?news_id=375
>>
>> "Things that can't be tested before freeflight, like roll response,
>> need to be more carefully analyzed and simulated."
>> "Engine gimbal mounts need to be much stronger than their expected
>> loading. Moving away from a screw in a cantilevered beam may be
>> prudent."
>> "Having a hard stop in the engine gimbal mechanism other than the hard
>> stops inside the linear actuators would limit how quickly the rocket
>> can go out of control, reducing aero loading. The engine went to
>> something like 45 degrees, where 3 degrees would be a sufficient
>> maximum for a vertical takeoff with no translation."
>> "Most of the cameras on this vehicle were installed with the intention
>> of documenting the hardware, rather than the view. In a nominal flight
>> this is less useful, but for initial test flights this should be
>> standard."
>> "There should be at least informal crew rest requirements."
>> "The pressure drop of the secondary film cooling system should be
>> tested. Just as it would in the main injector, if the pressure drop is
>> too low it can cause or reinforce feed system and/or engine
>> resonance."
>>
>> My takeaways:
>>  - Focus on the water-cooled, steam-driven engine as innovative
>> approach to heat transfer management. Film cooling is boring and hurts
>> Isp. I am going to pursue a heat-transfer analysis of the water-cooled
>> steam-driven engine in my thermo/fluids class.
>>  - 6DoF should consider hard-stops for the fins.
>>  - We should consider treating Vision as its own category of projects.
>> Documenting views on the way up is good for publicity, but I would
>> like to propose that for the next launch we attempt to get cameras on
>> every mechanical system.
>>
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>
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