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-   -   Preview of Dave's "Monster Truck on Mars" (http://www.chiefdelphi.com/forums/showthread.php?t=57952)

Kevin Watson 22-06-2007 11:34
Re: Preview of Dave's "Monster Truck on Mars"
 
Quote:
Originally Posted by seanwitte (Post 632581)
I remember seeing a preview of the Sky Crane, but the video is incredible. Now you just have to convince the science people to let you land close enough to one of the MER fellas that they can get a picture of the landing. Will it be drop tested before the big trip?
There will be lots of modeling, simulation, and bench testing of the various components, but I'm not sure if there will be a full-up drop test of the sky crane itself. I suspect Dave attended that portion of the Critical Design Review, so you might ask him for a more definitive answer.

-Kevin

cooker52 22-06-2007 11:57
Re: Preview of Dave's "Monster Truck on Mars"
 
Quote:
Originally Posted by Kevin Watson (Post 632560)
A fair portion of the avionics for MSL are being developed in my group, including the controlller for the Sky Crane.

-Kevin
Very impressive. Will it be more controllable than the MER on the landing?

Kevin Watson 22-06-2007 12:58
Re: Preview of Dave's "Monster Truck on Mars"
 
Quote:
Originally Posted by cooker52 (Post 632597)
Very impressive. Will it be more controllable than the MER on the landing?
Yes, we'll have more control, but we're still not to the point where we can drop a lander right where we want to. There is a program based at JSC called ALHAT (Autonomous Landing and Hazard Avoidance Technology) that is looking at ways to autonomously land a spacecraft fairly close to a pre-determined location. One of the problems that my group is working on (with folks at Goddard) is providing the computational throughput needed to calculate a safe path to the landing area. Looking at the current algorithms, we think we'll need a computer(s) that can provide a sustained throughput of a few hundred billion calculations per second, which is a few orders of magnitude faster than current flight-qualified CPUs.

-Kevin

Adam Y. 22-06-2007 13:17
Re: Preview of Dave's "Monster Truck on Mars"
 
Quote:
Originally Posted by chris31 (Post 632457)
Wow! That is a beast! I wonder what the speed of it is.
Quote:
[sarcasm]Only about .567 kph. The torque is amazing though![/sarcasm]
Apparently, the speed is limited by the rocker boogie suspension. At least that's what the article on wikipedia says about rocker boogie. It would be really neat if we could get it going faster.

Protronie 22-06-2007 21:55
Re: Preview of Dave's "Monster Truck on Mars"
 
Yeah but can it crash a car?
Jump 10 feet in the air?
Or float on a lake?

I don't think Big Foot has anything to worry about :D


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