uncleflo
Registered since September 28th, 2017
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RP2040 Launches Rocket Flight Computer | Tom's Hardware
Saved by uncleflo on January 27th, 2022.
Putting Raspberry Pi boards into space is nothing new, but the method of achieving orbit often differs. While the Astro Pi computers headed for the final frontier onboard a SpaceX Falcon 9 rocket, there are some decidedly lower-tech approaches including, as detailed on the Tindie blog, this $45 RP2040 flight computer from Finnish designer Dan Invents. Combining the RP2040 controller with an altimeter, accelerometer, temperature sensor, and enough juice to power two servo motors (for parachute deployment on the way down), the Rockit (rocket operation computing kit) weighs just 0.18oz (5g) and measures 1.73 x 0.9 x 0.35 inches (44 x 22 x 9 mm). It comes with an open-source firmware pre-installed, and can be tinkered with and updated over micro USB. There's a 16-position rotary switch for adjusting parameters such as start and end positions for the servos, and also a buzzer, so you can more easily find your rocket after a successful landing. Compared to the 2MHz Apollo guidance computer that deposited Neil Armstrong on the Moon, the RP2040 is a powerhouse, and should be more than capable of altitude-based parachute opening and logging flight data from the sensors to a micro SD card. The kit, which costs $44.99, comes with just the board and its pin headers - you need to supply your own battery, servos, cabling, micro SD card and space suit.
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Starlink internet coverage, cost, speeds and the latest news — what you need to know | Tom's Guide
Saved by uncleflo on May 11th, 2021.
Elon Musk's Starlink satellite internet service is rapidly launching satellites — here's everything we know While it's still in its early stages, Starlink could very well change the internet for billions of people around the world. In our Starlink review, we were impressed by the new satellite internet service being rolled out by tech billionaire and Tesla founder Elon Musk, but because the service is in beta, there's lots of questions people have. SpaceX has launched over 1,500 Starlink satellites to date. Its most recent mission went off successfully and should continue to help cover the northern U.S., Canada and the U.K. NASA and SpaceX have also come to an information-sharing agreement to avoid orbital collisions. SpaceX is also nearing an agreement with the FCC to have it's satellites orbit at an even lower range, which should only improve signal and connectivity.
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Air-Breathing Launch Vehicle Technology Being Developed
Saved by uncleflo on September 2nd, 2014.
Of the technical factors that would contribute to lowering the cost of space access, reusability has high potential. The primary objective of the GTX program (ref. 1) is to determine whether or not air-breathing propulsion can enable reusable single-stage-to-orbit (SSTO) operations. The approach is based on maturation of a reference vehicle design with focus on the integration and flight-weight construction of its air-breathing rocket-based combined-cycle (RBCC) propulsion system.
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KickSat -- Your personal spacecraft in space! by Zachary Manchester — Kickstarter
Saved by uncleflo on June 20th, 2014.
Would you like to have your own spacecraft? Kickstart the personal space age by helping launch tiny spacecraft into low Earth orbit. I'm Zac Manchester, a graduate student in Aerospace Engineering at Cornell University. Over the last several years a few collaborators and I have designed, built, and tested a very tiny and inexpensive spacecraft called Sprite that can be built and launched into low Earth orbit for just a few hundred dollars each!
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COMMStellation™ - MSCI
Saved by uncleflo on September 15th, 2013.
COMMStellation™COMMStellation™ is our communications constellation that is being developed to help alleviate global backhaul issues and connect rural and remote areas of the world where fibre infrastructure is cost prohibitive. COMMStellation™ is scheduled for launch in 2018. MSCI’s COMMStellation™ will orbit the earth at a height of 1,000 kilometres circling the earth in a polar orientation. COMMStellation™ will be comprised of 72 microsatellites in 6 orbital planes with an additional 12 redundant microsatellites (2 per orbital plane). In its current configuration, COMMStellation™ will provide 100% global coverage with up to 15 times the speed and 10 times the total bandwidth capacity of a MEO constellation of comparable satellites.
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