![]() ![]() ![]() On July 20, 2021, Blue Origin sent its first crewed mission into space via its New Shepard rocket and spaceflight system. In May 2019, Jeff Bezos unveiled Blue Origin's vision for space and also plans for a moon lander known as " Blue Moon", set to be ready by 2024. However, by August 2021, the flight engines for ULA have still not been qualified, and Ars Technica revealed in an in-depth article serious technical and managerial problems in the BE-4 program. BE-4 had been expected to complete engine qualification testing by late 2018. ![]() Blue said the "BE-4 would be 'ready for flight' by 2017." By 2015, Blue Origin had announced plans to also manufacture and fly its own orbital launch vehicle, known as the New Glenn, from the Florida Space Coast. īlue Origin moved into the orbital spaceflight technology development business in 2014, initially as a rocket engine supplier for others via a contractual agreement to build a new large rocket engine, the BE-4, for major US launch system operator United Launch Alliance (ULA). On nearly every one of the test flights since 2015, the uncrewed vehicle has reached a test altitude of more than 100 kilometers (330,000 ft) and achieved a top speed of more than Mach 3, reaching space above the Kármán line, with both the space capsule and its rocket booster successfully soft landing. It has not yet begun commercial passenger flights, nor announced a firm date for when they would begin. Blue Origin rescheduled the original 2018 date for first passengers several times, and eventually successfully flew its first crewed mission on July 20, 2021. Developmental test flights of the New Shepard, named after the first American in space Alan Shepard, began in April 2015, and flight testing is ongoing. Initially focused on suborbital spaceflight, the company has designed, built and flown multiple testbeds of its New Shepard vehicle at its facilities in Culberson County, Texas. īlue Origin develops orbital technology, rocket-powered vertical takeoff and vertical landing (VTVL) vehicles for access to suborbital and orbital space. The company's name refers to the blue planet, Earth, as the point of origin. Blue Origin is employing an incremental approach from suborbital to orbital flight, with each developmental step building on its prior work. Rob Meyerson led Blue Origin from 2003 to 2017 and served as its first president. Founded in 2000 by Jeff Bezos, the founder and executive chairman of Amazon, the company is led by CEO Bob Smith and aims to make access to space cheaper and more reliable through reusable launch vehicles. Blue Origin, LLC is an American privately funded aerospace manufacturer and sub-orbital spaceflight services company headquartered in Kent, Washington. ![]()
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![]() The price to purchase wall air vent deflectors is the same as above, $6 – $28 per unit. ![]() This type of air vent is also attached to the vents by using the attached magnets. If they’re made specifically for the wall – or just used there – they can be called wall vent deflectors. However, many wall vents are wider than floor vents, so require different deflectors. Wall air vent deflector – Some wall vents are the same size as floor vents, so the same deflectors can be used.The average cost for floor vent air deflectors is from $6 – $15 per unit. Floor air vent deflectors are most often attached to the vent or register by magnets. The width on many of them is adjustable, so you can fit the deflector on any of your floor vents. Floor air vent deflector – floor air vent deflectors push air in a specific direction and they are usually between 10” and 14” in length.They’re usually a little more complex than the other types – more moving parts like directional air louvers – so cost runs higher. The average cost is usually around $30 – $75. The cost for ceiling vent deflectors varies depending on the brand, quality, and type. ![]() Ceiling air vent deflectors attach the vents by using magnets.
![]() ![]() Python is in effect "promoted" for use on the Pi, at least in part for its ease-of-learning for new programmers. The most recent releases of Raspbian include development and runtime support for all these languages. ![]() There are many programming languages available for the Raspberry Pi, but I'll limit the discussion to "professional grade" programming languages that target standalone programs, support multi-tasking, allow hardware and network access, etc. The rest of this introduction describes the motivation for using Java and for remote development using NetBeans. Magic! You can even debug the running program, setting breakpoints and examining variable values. Once everything is set up properly, you can write a Java program in NetBeans and then a single click compiles and builds the program on the workstation, downloads the program to the Pi, runs the program on the Pi, and delivers output to the NetBeans console. NetBeans runs on a workstation (a desktop or laptop computer, not the Raspberry Pi) connected via Wifi to the Raspberry Pi. The approach is not only efficient, it is free!įundamentally, the approach is remote development using NetBeans. ![]() I've used the approach to develop Java capabilities ranging from low level device support to multi-threaded and network-based programs. This Instructable describes a very efficient approach for developing Java programs for the Raspberry Pi. ![]() |
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