http://ntrs.nasa.gov/archive/nasa/casi.ntrs.nasa.gov/20070025224_2007025210.pdfAnyone want to bet that Chang'e/Yutu have 1Mhz tansceivers ? EDIT: actually more likely, i would think they will have variable frequency transceivers and they'll run some surface radio propagation experiments across the likely frequency ranges.
and Yutu from new angle
Quote from: pospa on 12/23/2013 05:44 pmand Yutu from new angle Interesting that the high gain is pointed down. They must be using the imager to look close at the dirt in front of Yutu.
he lander leg pads. They seemed to have pushed, and piled up some regolith on the outside, but not on the inside. That seems to suggest to me that there was some stroke/give in each leg when the lander dropped down. ...Looking at the location of the peak on the small pile also seems to indicate that the legs did then retract a bit. ..
I have asked this before, but no reply, what's the rational for mounting the HG antenna on the same mast as the pancam? Does it save mass? Simplify structure?
Quote from: Dalhousie on 12/23/2013 11:07 pmI have asked this before, but no reply, what's the rational for mounting the HG antenna on the same mast as the pancam? Does it save mass? Simplify structure?I thought that Emily suggested a reason earlier in the thread: it reduces the number of things that have to be deployed and retracted. Reduces the number of things that can fail.
Quote from: Blackstar on 12/24/2013 02:50 amQuote from: Dalhousie on 12/23/2013 11:07 pmI have asked this before, but no reply, what's the rational for mounting the HG antenna on the same mast as the pancam? Does it save mass? Simplify structure?I thought that Emily suggested a reason earlier in the thread: it reduces the number of things that have to be deployed and retracted. Reduces the number of things that can fail.Thanks, that's what I thought.
Chang'e 4 won't land on the moonChang'e 5 a big innovation on how it will return http://tech.southcn.com/t/2013-12/24/content_88204235.htm (in Chinese Language)Machine Translation:The Chang'e five: return mode innovationThe three task is not over yet, Chang'e five has become a topic of town talk of the streets. Ye Peijian academician is the No. five innovations made detailed disclosure.Chang five and Chang three, compared with one great leap is the No. five is composed of 4 components, the lander, riser, the orbiter, return device, 4 is added up to the quality, now all emission field all have launch, must to the newly established Hainan launch, but with the new Long March five emission.Academician Ye Peijian also explains in detail the Chang'e five launch, falling process month, return. The long march five combined body 4 is launched into the orbit of the moon, the orbiter, return to a portfolio, the lander, rise to another combination, two combination, the lander with ascenders landed in a predetermined area. After falling to a predetermined area, a robot lander will be on the surface of the moon to catch things into a container, a mechanical hand can make hole, can be played on the moon 2 meters deep hole, to seize, then put into the container. The machine hand will also put the container into the riser lander inside, after rising is the moon take off. Fly then enter the orbit of the moon, and then with the orbiter docking and assembly to return, put up device inside the samples back to the transfer device, and then the riser away, the orbiter and return device around the moon back to earth.Academician Ye Peijian field said, Chang'e five return there will be a great innovation. The past returns and return of Shenzhou non are direct returns, this time in order to solve the placement problem, to solve the land to adjust the carrying angle impact problem, separated into the atmosphere to 60 km will jump back into the universe to, then jump back to the atmosphere, and then come back. "The longer distances, go longer, we can get a lot of benefits, this method can reduce the heat load, reduce land angle and so on, so the return mode will also be the first test of our." Leaf said academician.Of course, this is not the Chang'e five crossing attempt rashly, Chang'e four will be the first "crab". Academician Ye Peijian said, Chang'e four months will not fall, around the moon walk a natural return orbit, try to get 10.7 km speed and trajectory, the return and the number five as like as two peas, to verify this return can return, whether fall to a predetermined area. Prof. ye said, next year we can see it around the moon and back China
to the Chinese speakers: any new info?
The lander leg pads. They seemed to have pushed, and piled up some regolith on the outside, but not on the inside. That seems to suggest to me that there was some stroke/give in each leg when the lander dropped down. It's obviously not the dirt kicked out by the descent engine because even if that was firing at the time of touchdown (which we know it wasn't) - the dirt flying outward would've piled up on the inside.
I didn't see any mention of this elsewhere, but the 21 December drive video showed (a) that video is possible as well as individual imagesPhil
Live TV from the moon for the first time in 41 years. I remember the frustration in Dec 1972 of the TV network's sparse coverage of Apollo 17. Now we have live HD from the moon, worldwide connectivity, and nobody can see it except a handful of elites.