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msl sky crane?
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Ro
Feb 22, 2012, 2:37:16 PM2/22/12
to
Hi,
I've been searching for video's and information on testing of the msl
sky crane system.
Apparently I've been looking in all the wrong places because I have
found nothing but nice pictures about how it should work on mars.
Turning to the wisdom of the group here.
Have test articles been built and tested?
Are video's and information available?
TIA Roland
I've been searching for video's and information on testing of the msl
sky crane system.
Apparently I've been looking in all the wrong places because I have
found nothing but nice pictures about how it should work on mars.
Turning to the wisdom of the group here.
Have test articles been built and tested?
Are video's and information available?
TIA Roland
Anvil*
Feb 23, 2012, 1:40:57 AM2/23/12
to
On Feb 22, 11:37 am:
*snip*
http://www.universetoday.com/82679/video-drop-test-for-next-mars-rovers-sky
-crane-landing-system/
It is typical that everything was tested in component and major
assembly levels, but as far as the total system... I think that's
simulation.
Each of the major bits except the teather have been used at some
point, just adding the teather and not landing the lander is a new
twist.
The retro-fire and lower bit seeks to remove many problem modes
encountered with heavier craft in a direct landing. Releasing the
chutes early to have a higher probability of not landing on the craft
and the skycrane should have released the vehicle before the chutes
could foul the skycrane. Dust on landing is greatly reduced and the
vehicle acts like a big curb feeler, in that the weight on the wheels
will confirm actual touchdown. Just, flying the skycrane away seems a
little vague to me. Much prefer a phrase like: 200 meters South before
cutting thrust.
RB
*snip*
> Have test articles been built and tested?
> Are video's and information available?
>
> TIA Roland
There's a basic drop test of the teather system:
> Are video's and information available?
>
> TIA Roland
http://www.universetoday.com/82679/video-drop-test-for-next-mars-rovers-sky
-crane-landing-system/
It is typical that everything was tested in component and major
assembly levels, but as far as the total system... I think that's
simulation.
Each of the major bits except the teather have been used at some
point, just adding the teather and not landing the lander is a new
twist.
The retro-fire and lower bit seeks to remove many problem modes
encountered with heavier craft in a direct landing. Releasing the
chutes early to have a higher probability of not landing on the craft
and the skycrane should have released the vehicle before the chutes
could foul the skycrane. Dust on landing is greatly reduced and the
vehicle acts like a big curb feeler, in that the weight on the wheels
will confirm actual touchdown. Just, flying the skycrane away seems a
little vague to me. Much prefer a phrase like: 200 meters South before
cutting thrust.
RB
bob haller
Mar 26, 2012, 9:23:42 PM3/26/12
to
On Feb 23, 2:40 am, "Anvil*" <anvil.dra...@gmail.com> wrote:
> On Feb 22, 11:37 am:
> *snip*
>
> > Have test articles been built and tested?
> > Are video's and information available?
>
> > TIA Roland
>
> There's a basic drop test of the teather system:http://www.universetoday.
com/82679/video-drop-test-for-next-mars-rove...
> On Feb 22, 11:37 am:
> *snip*
>
> > Have test articles been built and tested?
> > Are video's and information available?
>
> > TIA Roland
>
> There's a basic drop test of the teather system:http://www.universetoday.
> -crane-landing-system/
>
> It is typical that everything was tested in component and major
> assembly levels, but as far as the total system... I think that's
> simulation.
> Each of the major bits except the teather have been used at some
> point, just adding the teather and not landing the lander is a new
> twist.
>
> The retro-fire and lower bit seeks to remove many problem modes
> encountered with heavier craft in a direct landing. Releasing the
> chutes early to have a higher probability of not landing on the craft
> and the skycrane should have released the vehicle before the chutes
> could foul the skycrane. Dust on landing is greatly reduced and the
> vehicle acts like a big curb feeler, in that the weight on the wheels
> will confirm actual touchdown. Just, flying the skycrane away seems a
> little vague to me. Much prefer a phrase like: 200 meters South before
> cutting thrust.
>
> RB
gut instinct, this sucker is too complex, and will fail......
>
> It is typical that everything was tested in component and major
> assembly levels, but as far as the total system... I think that's
> simulation.
> Each of the major bits except the teather have been used at some
> point, just adding the teather and not landing the lander is a new
> twist.
>
> The retro-fire and lower bit seeks to remove many problem modes
> encountered with heavier craft in a direct landing. Releasing the
> chutes early to have a higher probability of not landing on the craft
> and the skycrane should have released the vehicle before the chutes
> could foul the skycrane. Dust on landing is greatly reduced and the
> vehicle acts like a big curb feeler, in that the weight on the wheels
> will confirm actual touchdown. Just, flying the skycrane away seems a
> little vague to me. Much prefer a phrase like: 200 meters South before
> cutting thrust.
>
> RB
I hope I am wrong....
Nasa does NOT need another high profile failure!!!!!
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Allowing, but minimally Very little actual technical content in reply. -GdM
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