Quote from: Danderman on 11/27/2013 11:28 pmWhat is the source of that 75 ton thrust figure?It appears in the arirang report linked above by Prober (note that story is from April, so it pre-dates the current moon rumor)QuoteThe KSLV-2 will use four, 75-ton engines whereas the Naro had just one engine that weighed 30-tons.Regardless of whether they really meant mass or thrust for the 30 tons, I don't see how you get 30 tons out of any of the Naro 1 specs...I thought for a second they might have been talking about scaling up the second stage engine, but in that case 30 tons would be far too high.Given the above and the vagaries of translation "identical" could also mean a lot of different things other than an exact copy: Same propellants, same combustion cycle, equal ISP...edit:The 75 ton figure appears here http://www.kslv.or.kr/kslv2/kslv_biz.asp?mn=1 google translate will get you .... something
What is the source of that 75 ton thrust figure?
The KSLV-2 will use four, 75-ton engines whereas the Naro had just one engine that weighed 30-tons.
Gov't Introduces Equipment of Nation's 1st Lunar Orbiterhttp://world.kbs.co.kr/english/news/news_Sc_detail.htm?lang=e&id=Sc&No=118433¤t_page=
The orbiter will carry three pieces of equipment, including a wide-field polaroid camera, a device that measures the moon’s magnetic field and a gamma-ray spectrometer.
South Korea’s first lunar space probe will launch in 2018 carrying a suite of instruments including a pantoscopic polarizing camera, a gammaray spectrometer, and a device to measure the Moon’s magnetic field. The spacecraft will circle in a polar orbit 100km above the Moon for more than a year, researching geographical features of the moon and its surrounding environment, and exploring the lunar surface for potential resources.
Quote from: plutogno on 04/20/2016 05:35 amGov't Introduces Equipment of Nation's 1st Lunar Orbiterhttp://world.kbs.co.kr/english/news/news_Sc_detail.htm?lang=e&id=Sc&No=118433¤t_page=Something got lost in translationQuoteThe orbiter will carry three pieces of equipment, including a wide-field polaroid camera, a device that measures the moon’s magnetic field and a gamma-ray spectrometer.They are sending a Polaroid camera ? I think we had bit more detail in the other thread.
NASA has published an announcement of opportunity for instruments on the 2018 orbiter.https://www.fbo.gov/index?s=opportunity&mode=form&id=a50e070404067b481e371726dab25130&tab=core&tabmode=list&=
A camera developed by scientists at Arizona State University will join four foreign-built instruments on South Korea’s first lunar orbiter set for launch at the end of 2018, NASA announced Friday.NASA selected the ShadowCam instrument from proposals submitted by U.S. science teams. Developed by Arizona State University and Malin Space Science Systems, ShadowCam will map terrain and search for evidence of frost or ice deposits inside eternally dark craters near the moon’s poles, scientists said.ShadowCam will launch with four South Korean-made instruments on the Korean Pathfinder Lunar Orbiter, which is set for liftoff in December 2018.The instrument is a rebuild of the narrow-angle camera on NASA’s Lunar Reconnaissance Orbiter, but with one major change.“The telescope and much of the electronics will be identical,” said Mark Robinson, ShadowCam’s principal investigator at Arizona State University. “The big difference is swapping out the current image sensor for one that is 800 times more sensitive, allowing high resolution imaging within permanently shadowed regions, something the Lunar Reconnaissance Orbiter Camera cannot accomplish.”
South Korea’s space agency, the Korea Aerospace Research Institute (KARI), has awarded a contract worth over US$5.7 million (CA$7 million) to Canadian company MacDonald, Dettwiler and Associates (MDA).Under the contract, MDA will provide KARI with the communications subsystems needed for the Korean Lunar Exploration Program, which aims to develop and launch a lunar orbiter by late 2018. MDA’s subsystems will provide relay information between KARI’s proposed lunar orbiter and the ground station on earth.
Madrid, October 2nd, 2017 – Thales Alenia Space has signed a contract with the Korea Aerospace Research Institute, KARI, to deliver the communications equipment for the Korea Pathfinder Lunar Orbiter mission (KPLO), a lunar probe scheduled for launch on December 2020. These equipment will be in charge of transmitting back to Earth the data collected by the instruments on-board the orbiter.
Ariane 4 used SRBs. Considering South Korea would be politically hard-pressed to manufacture a Solid Rocket Motor large enough to potentially be threatening Balistic Missile, what would a KSLV-2 with 2 or 4 single engine liquid booster stages (using 1st or 2nd stage diameter tooling) look like performance wise?
Quote from: Lucid Nonsense on 10/21/2017 03:28 pmAriane 4 used SRBs. Considering South Korea would be politically hard-pressed to manufacture a Solid Rocket Motor large enough to potentially be threatening Balistic Missile, what would a KSLV-2 with 2 or 4 single engine liquid booster stages (using 1st or 2nd stage diameter tooling) look like performance wise? The warhead weight limitation for SK missiles was recently dropped; there's still a formal range limit, they can de facto produce missiles, and thus motors, of any size now.
Korean new rocket family images.http://japanese.joins.com/article/758/178758.html (Japanese article)They may change the Octaweb engine arrangement