Rocket Roundup for June 3, 2020

Astronomy Cast
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Automatic TRANSCRIPT

Twenty twenty. Today's livestream was hosted by Anne Wilson. And our audio is reported by me Allie Pelfrey. Most Mondays through Fridays. Our team will be here putting science in your brain. Usually Wednesdays for rocket roundup, and we have some catching up to do. Let's get to it, shall we? A JAKSA H. to be rocket launched the H. T. V. Nine Mission Aka. WHO NATORI Nine on Wednesday may twentieth, twenty twenty at five thirty one PM ut see. The mission patches a gold ring around a blue and yellow graphic of the H. T. V. Capsule with a yellow image of the ISS in the distance against a black background. The text H to transfer vehicle and mission designation HDTV, nine, or in the yellow ring. The Japanese characters say Kuna Tori nine. There were to last for this flight. This was the last flight for the H. to be the first flight of the H. Three is planned for later this year. This was also the last Katori. A new Japanese cargo vessel is expected to launch and twenty when he to. A lot of cargo went to the ISS ON HDTV nine. Six thousand two hundred kilograms to be exact. That's four four thousand three hundred kilograms in the pressurized compartment and one thousand nine hundred kilograms in the unpressurised compartment. This includes a solid combustion experimental module. The module will continue research on combustion in microgravity, also on board were six new lithium ion batteries for the space station and fresh bell, peppers, Kiwi and citrus fruit for the crew. All fresh fruits and vegetables were grown in Japan. One of the other experiments was a wireless. Lan Demonstration or W. L. D. pronounced wild. Wild was an experiment that was performed during Kuna Tori nines flight. This was tested during Katori nines approach where video taken by a camera attached to the craft's propulsion module was broadcast in real time on board, the space station via a wireless data link the technology tested by wild will enable ISS cruise to monitor approaching vehicles during an autonomous docking. This was the first time to spacecraft communicated using w LAN during a rendezvous. On May twenty second at seven thirty one am ut see Russian. Armed Forces launched a Soyuz two one B rocket with the cosmos, two five four six mission. This was a military mission. So details are a little scarce. Here's what we do know. The payload was the Tundra Fourteen L. satellite that will be used for an early warning system, replacing the aging US K. and US Komo constellations. This is the fourth satellite and the newer. Tundra Constellation. The satellite was placed and ammonia orbit, which is a highly. The satellite was placed in a Molnia orbit, which is highly elliptical and highly inclined. When I say elliptical I. Don't mean a tiny bit. egg-shaped were straight into severely stretch territory with altitudes ranging from six hundred to nearly forty thousand kilometers above earth. At that long oval of an orbit and place it at sixty three degree angle relative to Earth's equator, and you get the highly inclined orbit. The what's the purpose of this orbit? Thanks to orbital mechanics. Ammonia orbit is uniquely suited to providing useful satellite coverage for earth, observation and communication services needed by ground terminals operating in high northern latitudes. Those areas are not easily serviceable from satellites in the typical geosynchronous orbits over the equator. Because any antenna you're using would be pointing at such a low angle that a small hill could easily block the path of the signal. And even though polar orbiting satellites can reach these same latitudes, they only have coverage of any given spot for several minutes at a time. The MONJA orbit is inclined in such a way that the desired areas are not only clearly visible. The satellite is pause for a time at its highest point. Thanks to orbital mechanics, which provides several hours of uninterrupted coverage that. L. E. O. AND GAO satellites simply can't

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