"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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