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Everything posted by steve9728
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JAXA (& other Japanese) Launch and Discussion Thread
steve9728 replied to tater's topic in Science & Spaceflight
It's many times less impactful than I thought it would be. Plus, the fact that no one was hurt, and it exploded in a ground test - that sounds like good news to me: much better than going up in the air and exploding. As long as they learn the lessons from this. -
CALT: Completion of technical validation of the reusable technology for a derivative of the CZ-10 rocket (i.e., a "bare-bones" model for launching next-gen manned spacecraft to LEO without a booster). "Payload basic requirements: Oriented towards the frontiers of lunar science research, with strong foresight and innovativeness. Reference directions: lunar geology and lunar physics, observation and physical research, space life science, as well as deep drilling on the lunar surface and the use of lunar surface resources. Focusing on clear scientific objectives and scientific problems, with outstanding research value and predictable research results. It has good engineering realisability, can adapt to the lunar surface environment (1/6g gravity, high vacuum, strong radiation, low magnetic field, large temperature difference between day and night, and moon dust, etc.), and meets all the conditions for the manned lunar exploration project mission. In the unmanned lunar landing mission, the lunar lander will be released and separated and work autonomously. In the case of manned lunar landing missions, they may be deployed and carry out work with the participation of astronauts. (1). The scientific payload for the unmanned missions to the Moon Total installed mass ≯ 260kg (can support multiple payloads to be installed and will separate from the lander after lunar landing). Total installation envelope size 1810mm×1510mm×930mm. Peak power <450W. Digital transmission downlink data rate ≯ 10Mbps. (2). The scientific payload for a manned mission to the Moon Total upward mass ≯ 60kg, total envelope size 980mm × 800mm × 550mm. Recovery total mass ≯50kg, total envelope size 550mm×320mm×300mm (2pcs) Peak power <500W (short time), average value ≯100W. (3). Lunar surface drilling payload Total mass ≯ 290kg, total envelope dimensions 1810mm × 1510mm × 930mm, with the ability to move, obstacle avoidance and meet the working hours of lunar surface survival. Peak power <450W. With ≮10m lunar sample drilling, order preservation, fidelity and encapsulation, and other capabilities, and can be drilled in the thermal, magnetic, seismic, and other detection." A movable drilling rig of less than 290 kg can drill at least more than 10m deep - man that thing is even heavier than the lunar rover which is around 200kg on the schedule!
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Medical surgery and industrial cutting are, in fact, some kind of "subtractive manufacturing". And what you're proposing is, if I understand you correctly, some kind of "additive manufacturing". Then I looked for Chinese domestic research and academic article websites. It seems that this technology is a relatively mature technology. It involves melting metal powder into a pool of metal solution and curing it with a laser - not too far from 3D printing. It doesn't look like in the game that uses a laser gun to repair everything, but the laser is indeed can 3D print something through metal raw material and was already being used in aerospace equipment manufacturing. If you are interested in this, here's the link but that's full Chinese. Let Mr. Chrome helps you. But using lasers to do something like minimally invasive or even non-invasive "medical surgery" to repair metal devices, maybe I'm not searching with the right keywords, and I'm not finding anything interesting either. Too cutting edge buddy!
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CCTV: "The wind tunnel is 167m long and can reproduce flight conditions at about 30 times the speed of sound and at altitudes of 40 to 90km. The flow field blown out of the wind tunnel has a diameter of 2.5m and can hold a wind speed of Mach 10 for 40 milliseconds. The temperature can be flexibly switched between 2,500~18,000°C and the air pressure between 100~10,000 atmospheres. The size of the experimental model can be up to 1m in diameter and 8m in length. Together with JF-12 and JF-22, makes China the only country with a wind tunnel experimental capability that can cover the full range of hypersonic flights." Didn't officially explain JF stands for what, but I guess probably is 疾风 (jífēng, storm).
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CMS: "We will launch a call for names of new manned spacecraft and manned lunar landers in the future. Guys, have you got any idea?" Personally, I object to using "Shuguang (曙光, Dawn in English)" because that conflicts with the radio call sign of the astronauts' life support team on the ground. And there's pretty romantic, I think, about the "successors on the march" calling the "former pioneers". Second, I think it's a good idea to try not to look to mythology for inspiration.
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CASC: Two CZ-2F rockets are undergoing simultaneous assembly tests. "Recently, in the plant of the Assembly Division of the 211 Factory of the First Academy of CASC, two CZ-2F rockets are undergoing simultaneous assembly and testing, of which the testing of the Long 2F Remote Eighteen Rocket is expected to be completed at the end of July. The CZ-2F Y18 rocket passed the assembly review in February this year and began assembly. It completed the assembly in June and entered the testing state. It is expected to leave the factory in September to carry out the subsequent Shenzhou spacecraft launch mission."
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Name fun fact? Alright, here's another one: The chief designer of the current Shenzhou manned spaceship and CZ-2F manned rockets, and deputy chief designer of next gen. manned rocket, called Rong Yi (容易). If we just ignore that's the person's name, that means "easy" in English. The word about "Rong Yi said her job wasn't that 'rongyi' actually." was really come up in the news hahaha
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totm aug 2023 What funny/interesting thing happened in your life today?
steve9728 replied to Ultimate Steve's topic in The Lounge
Believe me or not, that's really the first time on me lol -
Surprisingly to me, there's something new about it: The plexiglass sphere of the central detector of the Jiangmen Underground Neutrino Observatory completes the installation of the equatorial layer. It is expected that the construction of the entire detector will be completed by the end of this year and start to read the numbers next year. "... Its core detection equipment - neutrino detector is located in the center of the 44m deep pool in the underground experimental hall, consisting of a 41m diameter stainless steel frame, a 35.4m diameter plexiglass sphere, as well as 20,000t of liquid scintillators, 45,000 photomultiplier tubes, and other key components. It is reported that the entire detector is made up of a total of 263 plexiglass panels spliced together, each with a thickness of 120 mm, which is currently the world's largest single plexiglass structure." The original CCTV news report about this, if you want to practice your Chinese: https://www.bilibili.com/video/BV1Gx4y1o7vZ/?spm_id_from=333.880.my_history.page.click&vd_source=6fef304b8d0c4737896e6b702ddfbfb3
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And something new: the third image he posts - CNSA's some kind of new imagination about future lunar exploration. "With regard to the construction of the Lunar research and experiment station. First, a lunar surface mobile laboratory with wide-range mobility will be launched, which will be capable of long-term unmanned and autonomous activities on the lunar surface and will be able to support the short-term stationing of astronauts. After that, corresponding modules will be launched and assembled into a lunar surface research experiment station, so that it will have the ability to stay on the moon in the medium term, and consideration can also be given to making use of the in-situ resources of the moon surface for the construction of lunar surface facilities, so as to further expand the functions of the lunar research experiment station. The above is only a preliminary idea, and further programme validation will be required later." It has to be said that the Chinese side's attitude towards the US is more like "it's best that they succeed, and it's somehow deserved that they're ahead of us. But we can't stop trying - we should follow our own timetable and scientific development needs to go: their success or not and when they make it has little to do with us."
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Completed a report of 30,000 words. Have to say, after we changed to a younger team leader, everything goes better - at least I won't be suspected by the annoying leader that I'm being distracted by listening to the videos playing symphony while I'm writing things at work.
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totm dec 2019 Russian Launch and Mission Thread
steve9728 replied to tater's topic in Science & Spaceflight
I don't know why, but the first sight of this thing reminded me of this: Doesn't have to be this thing, just, well, some weird little bug I can't think for a second. -
Also by this forum, CASIC announced the launch of the construction of an integrated ultra-low orbit communication + remote sensing satellite constellation. The "ultra-low orbit" means the orbit below 300km. By this orbit, it can achieve a 50% reduction in the weight and const optical payloads at the same resolution compared with the conventional orbit. "This satellite constellation has the following characteristics: First, 'see clearly', the spatial resolution will reach 0.5m. Second, is 'see faster', the spatial information directly reaches the user within 15 minutes. Third, is 'see more', through the intelligent processing system carried on the satellite, the satellite end of the direct contact and inter-satellite communication and other technologies, eliminating the ground centralized data processing links, to achieve the spatial information directly to the user's terminal, conducive to the incubation of the satellite directly serve the public of the emerging industry ecosystem. Meanwhile, the cost of a single satellite of this constellation will be lower, to achieve the same resolution of optical in and weight, cost reduction of 50%." Zhang Nan (张楠), chief designer of the satellite constellation introduced. "At the phase of tech and service validation, 9 of these satellites will launch to form a satellite nest in 2024. In 2025, build a demonstration system for immediate essential business applications to provide one-day service response capability. At the phase of large-scale networking, it will complete widespread application in the industry. Form a large-scale network and achieve half-hourly response capability. It is planned that in 2030. 300 sats will be completed for network operation. Providing visible light, SAR, hyperspectral, and infrared multi-type full-time remote sensing service system and forming a global 15-minute response capability. The last phase, the integration, and development, will complete the comprehensive construction of the business system, achieve a global instant business response capability of less than 10 minutes and provide a complete instant sensing service." The report also presupposes an emergency situation: when an unexpected situation occurs, inter-satellite transmission and the intelligent processing system carried on the satellite can efficiently photograph and extract key information, relying on the network to directly transmit to the vehicle or portable terminal. Within 15 minutes, the front-line disposal unit and front-line command organizations will be provided with high-time-sensitive images of the scene in the disaster area. Thus, it can efficiently support emergency rescue and auxiliary decision-making. Last night by CCTV13: official timetable announced for future Chang'e program: Around 2024 launch Chang'e-6; Around 2026 launch Chang'e-7; 2027 finished the maiden flight of CZ-10; 2028 launch Chang'e-8 Before 2030, taikonaut reach the moon
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totm march 2020 So what song is stuck in your head today?
steve9728 replied to SmileyTRex's topic in The Lounge
My mouth today: boung boung boung boung -
The launch video from LandSpace officially: https://www.bilibili.com/video/BV1Km4y1E74j/?spm_id_from=333.999.0.0&vd_source=6fef304b8d0c4737896e6b702ddfbfb3 Looks like expecting to use CZ-5B to do that - the bad boy which were launching three modules of the CSS. But I'm not so sure that's the CZ-5B in the slides because CNSA previously have a plan to use a larger fairing on the original CZ-5 as an improvement. And meanwhile, CNSA also said that they won't waste the CZ-5B this model of a rocket, but it will be improved accordingly to be involved in other missions in the future. tbh, if we don't consider some emergency situations like when a natural disaster destroys the signal base station and causes a disconnection in the affected area, satellite network constellations won't be that good in China. Because there's already built a lot of signal antennae in literally everywhere you can think of except for those nature reserves where no one will go in except the staff involved - and usually, that's all 5G signal, 4G at least. The place where you can get 3G or 2G signal, is the place where you can see the galaxy that night if the weather allowed. The Mars surface shot by Zhurong. Don't get this wrong, there's still no new good news on this little rover.
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Global Times: In the ninth China Commercial Aerospace Forum held in Wuhan, Zhang Hailian (张海联), the deputy chief designer of CMS introduced China’s preliminary programmer for the manned lunar landing. "At present, China's preliminary program for a manned landing on the moon is to use two rockets to send the lunar lander and the manned spaceship respectively to a circumlunar orbit for in-orbit rendezvous and docking, with the astronauts entering the lunar lander from the spaceship. Then, the lander will descend and land on the predetermined area on the lunar surface alone, and the astronauts will board the moon to carry out the scientific investigation and sample collection." Zhang Hailian said that after completing the set tasks, the astronauts will ascend to the circumlunar orbit in the lander to rendezvous and dock with the spacecraft and return to Earth in the spacecraft with samples. Currently, the development of new rocket - the CZ-10, the new manned spacecraft, the new manned lunar lander, and the new manned lunar rover, etc. are ongoing. The manned lunar rover is 200kg in weight and can carry two astronauts.
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The next step for Landspace is put the payload - a real satellite on their third rocket, the ZQ-2 Y3 rocket. if I remember correctly, this rocket is basically assembled in the last report. Video from the Landspace launch site in JSLC: https://www.bilibili.com/video/BV1Px4y1o7mw/?spm_id_from=333.1007.top_right_bar_window_history.content.click What a nice day!