暈月取樣系統(tǒng)

The HALO LSS for separating 1-2m rocks from smaller pieces and dust contain an inner rotating filtering cylinder in aluminum sheet metal, alternatively with an additional inner layer of Teflon to eure low friction and good gliding capability. The inner filtering cylinder has small cutouts for small regolith pieces and dust, covering around 300 degrees of the cylinder surface area. The rest of the circular surface area (60 degrees) have larger cutouts for rocks of sizes <= 2cm. The HALO unit need to be attached to a rover arm, to be able to collect material from the ground surface and to be powered. The procedure steps to collect and filter Regolith using the HALO LLS are: 1. The complete HALO-unit is placed near the ground and is tilted forward by the robot arm, so that the spoon get buried down in the ground <10cm deep. 2. The rover will drive forward in slow speed to collect material until the spoon is filled up(determined using camera on rover). 3. When the spoon is filled up, the robot arm, on which the HALO-unit is attached to, will lift up the unit and tilt back in an angle so that the regolith begi to slide down along iide the rotating filtering cylinder. The filtering process is being helped by the Eccentric rotating mass (ERM) onto a motor which create vibratio in the unit.4. The filtering process begin, the filtering cylinder is rotated back and forth in a repeating sequence , within the 300 degrees interval, until all the fine small Regolith is filtered down to the second chamber (outer cylinder), gliding down and being collected into the container (using camera in the HALO to monitor results). The filtering process is being helped here as well by the ERM-motor. 5. The filtering cylinder then rotate to the next remaining surface area of 60 degrees-interval of big cutouts to collect the remaining rocks down to the second chamber (outer cylinder) and then gliding down into the container. It is rotated back and forth in the interval until all rocks are collected.6. The robot arm with the HALO tilt down again and any remaining rocks larger than 2cm will fall out from the cylinder down to the ground. Now the procedure is finished and can be repeated until the container is full of deposits, coisting by laye of fine regolith and rocks, separated from each other. Materials:The skeletal enclosure is carbon fiber in side plates and pipes, which is strong and lightweight and can withstand extreme temperatures with minimal thermal expaion. Plastics used are PFA or PEEK, also resistant to wide range of temperatures. Custom made plastic bearings are used to keep low weight. Specs:Weight: 0,65kg, excl camera (requirement of 0.5kg not fully achieved, inner cylinder may be made shorter or smaller in diameter to cut weight). Materials: Aluminum, (alt. Teflon), Carbon Fiber, Plastic PFA or PEEK Power Usage: Max 10WTotal number of parts: 29Moto: Step motor Nema 8 and Nema 11 Suggested Rotating Speed: 2-3RPMChoice of camera: To be decided by NASA. /Josef Snabb _ _ _ Calculatio:Required Torque (T) to choose motorMaximum acquired regolith weight: m= 0,3kgRadius on inner rotating tube: R=44,5mm = 0,0445mT=F*R, were F=m*a, which mea T=m*a*RGravitational acceleration on the moon, a=1,625m^2And we get: T=0,3*1,625*0,0445 = 0,0217Nm, converted to = 2,17NcmRequired Torque due to Moment of inertia to rotate the inner tube will be so small and will be neglected. Same thing with friction loss in bearings. Approximately a maximum of 2,5Ncm will be required. Which mea Step motor “Nema 8” at 1,6Ncm is too weak, therefore “Nema 11” at 6Ncm is selected. Note #1!My idea concept of submission is NOT any copy or ipiration of any other submission whatsoever. My creation was developed before any similar concepts from other use was submitted, Image File can be sent to prove original concept date, by looking at date in digital properties of the #2: I realized that one dimeion is incorrect for the function, i.e the space between the inner and outer cylinder, it is only 1,45cm and should be minimum 2cm so that rocks at 2cm size fits while gliding down into the container and not get stuck in between. Best RegardsJosef Snabb