#Sierra Nevada Dream Chaser

[spacenutspod]

Welcome to SpaceTime, the podcast that brings you the most fascinating stories and discoveries in astronomy, space and science. Your host, Stuart Gary, and in this episode, we'll talk about: ● How the first Dream Chaser space plane is ready to fly to the International Space Station and what it means for the future of space exploration. ● How astronomers have detected an infrared aurora on Uranus and what it reveals about the planet's weather and climate. ● How the 2023 Antarctic ozone hole reached its maximum size and why it's important to monitor and protect the ozone layer. ● How atrial fibrillation, a common heart rhythm disorder, is associated with a higher risk of memory and brain function decline. ● How more needs to be done to reduce the number of marine animals killed by ships and what are some of the possible solutions. ● How older women who look after the sick and frail live longer than those who don't and what are the possible explanations. ● How to apply critical thinking and scientific reasoning to the claims and evidence of ghosts and demons. If you enjoy SpaceTime, please subscribe, rate, and review us on your favorite podcast platform. You can also follow us on X (Twitter), Facebook, YouTube, Instagram and Tumblr for more updates and behind-the-scenes content. Thank you for listening and stay curious!

[lonestarflight]

"Sierra Nevada Corporation’s Dream Chaser full-scale engineering test article has been readied for shipment to NASA’s Armstrong Flight Research Center in California for phase two of the flight test campaign that will be conducted later in 2016 in coordination with Edwards Air Force Base. Dream Chaser program upgrades and initial hardware testing were completed at the Louisville, Colorado spacecraft assembly facility, and within the next several weeks, the same Dream Chaser vehicle that conducted the company’s flight test in 2013 will arrive at Armstrong. SNC and Armstrong will begin a series of pre-flight ground evaluations to verify and validate the vehicle’s system and subsystem designs. After successful completion of all ground testing, Dream Chaser will begin its phase two free-flight test. These activities are being conducted through the company’s Commercial Crew Integrated Capabilities Space Act Agreement with NASA’s Commercial Crew Program."

Date: July 28, 2016

NASA ID: KSC-20160728-PH_SNC01_0001

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December 10, 1962: The US Air Force cancels its X-20 Dyna Soar program

The X-20 Dyna Soar was a reusable manned spaceplane developed for reconnaissance, space rescue, and satellite interception and maintenance. Its reusability and ability to be launched on different boosters made it more advanced than other spacecraft of the time, such as the American Mercury and Soviet Vostok capsules. It is best remembered as the predecessor to spaceplanes of the the current and most previous generation, such as the Space Shuttle Orbiter and Sierra Nevada Dream Chaser.

Learn more about the X-20 Dyna Soar here!

[teknolojihaber]

Dünyanın ilk ticari uzay uçağı Dream Chaser, ISS'ye uçmadan önce son testleri için Florida'ya geldi.

Dünyanın ilk ticari uzay uçağı Dream Chaser, NASA Uzay Merkezi'ne ulaştı . Kennedy Florida'da, tek rotası uzaya gitmek. Uçağın bu yılın sonunda ULA Vulcan roketiyle uçması bekleniyor. NASA merkezinde, uçak (uzay uçağı) son kontrollerden geçecek, termal koruma alacak ve tek kullanımlık kargo konteyneriyle birlikte fırlatılmak üzere rokete takılacak. Dream Chaser DC-100 Tenacity uzay uçağı projesi bu yıl 20. yaşına giriyor. Başlangıçta Shuttle'a hafif bir alternatif olarak tasarlandı. 2014 yılında proje, mürettebatın ISS'ye ticari olarak teslim edilmesi için toplam 7 milyar dolar değerinde bir NASA sözleşmesini paylaşan Boeing ve SpaceX'in gemileri lehine reddedildi. NASA, 2016 yılında ticari yeniden kullanılabilir uzay uçağı projesine geri döndü ve yine Sierra Space ile geliştirilmesi için bir anlaşma imzaladı (daha önce Sierra Nevada Corporation bu işe dahildi). Ön anlaşmaya göre yeniden kullanılabilen uzay uçağı Tenacity, ISS'ye en az 7 kargo uçuşu yapacak. Yukarıda da belirttiğimiz gibi uçak bu yılın sonunda ilk uçuşunu gerçekleştirecek. Uçağın ana kargo bölmesi tek kullanımlık ve bu nedenle “Kayan Yıldız” adını almıştır. Uçağın arkasına takılı ve 3,5 tondan fazla yük taşıyabilmektedir: erzak, ekipman, deney kitleri ve daha fazlası. Kargo temizlendikten sonra, ISS'den gelen enkaz, konteynerle birlikte üst atmosferde yakılmak üzere bölmeye yerleştiriliyor. Uçağın kendisi kanatları ve motorları üzerinde neredeyse her piste iniyor . Asılı kargo konteynerlerinin elbette her seferinde yenilenmesi gerekecek ve zamanla hacimleri artacak, kargo bir roketle uzaya yollanıyor ve uçak yalnızca yörüngesini ayarlıyor ve ISS'ye yanaşıyor. Uçak, ilk uçuşunda 45 gün boyunca ISS'ye yanaşacak. Daha sonra park süresi 75 güne çıkarılacak. Dahili konteynerla uçak, istasyondan Dünya'ya 2,5 tonluk yük taşıma kapasitesine sahip. Doğru, iniş zor olarak şekilde yaklaşık 1,5 g hızla dunyaya dönecek. Read the full article

[talkoftitusville]

Dream Chaser Arrives In Ohio For Thermal Testing; Last Stop Before It Comes To The Cape

Dream Chaser”Tenacity” Photo: Sierra Nevada Sierra Space announced today on the X platform that its Dream Chaser “Tenacity” orbiter has arrived at “NASA’s Armstrong In-Space Propulsion facility in Ohio for thermal vacuum testing. This will be its last testing phase in Ohio before it makes its way to Kennedy Space Center in Florida.” The Armstrong test facility is part of NASA’s Glenn Research…

[nonamem9]

Discussion of space planes, and how absolutely massive the space shuttle was, but the CGI shown out in our windows talking about this being oversized by at least 5x of it's real size, and mentions of the Sierra Nevada Dream Chaser.

Children of our neighbor in front right, listening to dj shadow cuz me of me playing building steam with a grain of salt , doing the backup singing as they're watching a telenovela

2 children of our house planning to make the best birthday party while being broke, they got no idea

Woke up 9:23

This is the 2nd morning nap

[siryl]

“Double LIFE” by Mack Crawford (“LIFE” being short for “large inflatable fabric environment”).

[rik-evora]

Lo de la cacería Dream chase

[spaceflight-insider]

Progress continues on Dream Chaser space plane

Progress continues on Dream Chaser space plane

The new color scheme of Sierra Nevada Corporation’s Dream Chaser includes more white thermal protection system tiles. Image Credit: Sierra Nevada Corporation

Over the last several weeks, Sierra Nevada Corporation (SNC) released a number of updates regarding its progress on the Dream Chaser space plane ranging from the completion of a NASA development milestone to an updated color scheme. (more…)

[greenstartpoint]

На околоземной орбите станет на одну космическую станцию больше, и она будет частной

На околоземной орбите станет на одну космическую станцию больше, и она будет частной

Sierra Nevada Corporation (SNC), частная аэрокосмическая компания, принадлежащая Эрену и Фатиху Озменам, раскрыла планы по созданию своей частной космической станции на низкой околоземной орбите. Это второй глобальный космический проект невадской компании после создания космического челнока Dream Chaser. Согласно задумке руководителей компании именно их Dream Chaser должен будет доставить первый…

[spacenutspod]

After a journey spanning almost two decades, Sierra Nevada Corporation's Dream Chaser reusable spaceplane, named Tenacity, is officially undergoing environmental testing at NASA's Neil Armstrong Test Facility located at NASA's Glenn Research Center in anticipation of its maiden flight to the International Space Station (ISS), currently scheduled for April 2024.

[aiaalalv]

SNC's Propulsion Division History

Free admission and free pizza Saturday, January 25, 2020 SNC's Propulsion Division History by Mike Carkin Propulsion Engineer, Propulsion Division Sierra Nevada Corporation (SNC) See what's happening on our social sites: Please join us, take a look, and invite others!volunteers are needed for social media, please contact cgsonwane@gmail.com linktr.ee , Meetup , Eventbrite , Engage @ AIAA LA LV AIAA LA-LV Website : AIAA-LALV.org

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‌ Donate Events/Program RSVP & Information Add to Calendar Donate Scholarship Who is Invited: Professionals, Students, friends and family members. (You do not need to be AIAA member to attend the event) (Volunteers are needed for all AIAA activities)

Who? Mike Carkin joined SNC in the fall of 2014 following completion of his master’s degree. The majority of his work at SNC focuses on thermo-fluid analyses of rocket engine chambers, test stand components and prototype hardware. He has been an integral member of a propulsion team tasked with bringing the VORTEX architecture from R&D to flight. Notable programs he has worked on include SNC’s upper stage engine, the Dream Chaser space plane and Boeing’s Phantom Express. Prior to joining SNC, Mr Carkin attended Embry-Riddle for both his graduate and undergraduate degrees in aerospace engineering with propulsion concentrations. While in attendance at ERAU, he oversaw the experimental rocket propulsion lab analysis team and was a key member of several research teams funded by the United Launch Alliance and NASA. Mr Carkin is also on COMSOL’s North American program committee and the chair of the Wisconsin section of the American Institute of Astronautics and Aeronautics. Where? Michelle Obama Neighborhood Library Community Meeting Room 5870 Atlantic Ave. Long Beach, CA 90805 (East of 710 Hwy, South of 91 Hwy, North of 405 Hwy, and West of 605. Near the junction of 710 Hwy and 91 Hwy.) Parking (Free Parking in the Library Parking Lot)

When? Saturday, January 25, 2020, 10:00 AM - 2:00 PM Introduction/Presentation starts at 10:30 AM / 10:45 AM (Ticket sales will end after Thursday, January 23, 2020, or whenever tickets are sold out.) Dress Code No open-toe shoes Contact: events.aiaalalv@gmail.com or (949)426-8175 (phone/text ok) (AIAA LA-LV Events/Program Chair) Coordinating Organization: AIAA Los Angeles - Las Vegas Section *Volunteers are needed, please contact: AIAA LA-LV Section Chair (cgsonwane@gmail.com) Read the full article

[edwhiteandblue]

December 10, 1963: X-20 Dyna-Soar Program is canceled.

The X-20 Dyna-Soar was a manned spaceplane developed by the United States Air Force for reconnaissance, space bombing, space rescue, and satellite intercepting and maintenance. It is best remembered as the predecessor to spaceplanes of the modern era, particularly the Space Shuttle Orbiter, Sierra Nevada Dream Chaser, and Boeing X-37B.

Read more about Dyna-Soar here!

[airmanisr]

Untitled by Robert Sullivan Via Flickr: Sierra Nevada Corporation engineers and technicians prepare the firm's Dream Chaser engineering test vehicle for tow tests on a taxiway at NASA's Dryden Flight Research Center.

[scifigeneration]

SpaceX astronaut launch: here's the rocket science it must get right

by Gareth Dorrian and Ian Whittaker

Two NASA astronauts, Robert Behnken and Douglas Hurley, will make history by travelling to the International Space Station in a privately funded spacecraft, SpaceX’s Falcon 9 rocket and Crew Dragon capsule. But the launch, which was due to take place on May 27, has been aborted due to bad weather, and will instead take place on May 30 at 3:22 pm EDT.

The astronauts will take off lying on their backs in the seats, and facing in the direction of travel to reduce the stress of high acceleration on their bodies. Once launched from Kennedy Space Centre, the spacecraft will travel out over the Atlantic, turning to travel in a direction that matches the ISS orbit.

With the first rocket section separating at just over two minutes, the main dragon capsule is then likely to separate from the second stage burn roughly an hour later and continue on its journey. All being well, the Dragon spacecraft will rendezvous about 24 hours after launch.

Space mission launches and landings are the most critical parts. However, Space X has conducted many tests, including 27 drops of the parachute landing system. It has also managed an emergency separation of the Dragon capsule from the rocket. In the event of a failed rocket launch, eight engines would lift the capsule containing the astronauts up into the air and away from the rocket, with parachutes eventually helping it to land. The Falcon 9 rocket has made 83 successful launches.

Docking and return

The space station has an orbital velocity of 7.7km per second. The Earth’s rotation carries launch sites under a straight flight path of the ISS, with each instance providing a “launch window”.

ISS orbit. Author provided

To intercept the ISS, the capsule must match the station’s speed, altitude and inclination, and it must do it at the correct time such that the two spacecraft find themselves in close proximity to each other. The difference in velocity between the ISS and the Dragon capsule must then be near to zero at the point where the orbits of the two spacecraft intersect.

Once these conditions are met, the Dragon capsule must manoeuvre to the ISS docking port, using a series of small control thrusters arranged around the spacecraft. This is due to be done automatically by a computer, however the astronauts can control this manoeuvre manually if needed.

As you can see in the figure below, manoeuvring involves “translation control” as indicated by green arrows – moving left/right, up/down, forward/back. The yellow arrows show “attitude control” – rolling clockwise/anti-clockwise, pitching up/down, and yawing left/right.

How to manoeuver a spacecraft. Author provided

This is complicated by Newton’s first law of motion – that any object at rest or in motion will continue to be so unless acted upon by an external force. That means any manoeuvre, such as a roll to the right, will continue indefinitely in the absence of air resistance to provide an external force until it is counteracted by firing thrusters in the opposite direction.

So now that you have a grasp of orbital manoeuvring, why not have a go yourself? This simulator, provided by Space X, allows you to try and pilot the Dragon capsule to the ISS docking port.

The astronauts will return to Earth when a new set are ready to take their place, or at NASA’s discretion. NASA are already planning the first fully operational flight of crew Dragon, with four astronauts, although a launch date for that has not yet been announced and will undoubtedly depend on the outcome of this demonstration flight.

New era for spaceflight

The launch puts SpaceX firmly ahead of the other commercial ventures looking at providing crewed space launches. This includes both Boeing’s Starliner, which first launched last year but was uncrewed, and Sierra Nevada’s Dream Chaser which is planned to be tested with cargo during a trip to the ISS next year.

The ability of the commercial sector to send astronauts to the ISS is an important step toward further human exploration, including establishing a human presence at the Moon, and ultimately, Mars.

With companies competing, however, an open question remains whether safety could at some point be compromised to gain a commercial edge. There is no suggestion this has happened so far, but any crewed mission which failed due to a fault stemming from economic concerns would have serious legal ramifications.

In a similar way to modern aircraft legislation, a set of space safety standards and regulations will need to be put in place sooner rather than later. For commercial lunar and beyond missions we also have to ensure that any spacecraft does not contaminate the location they are visiting with germs from Earth.

With more nations and companies developing plans for lunar missions, there are obvious advantages in international cooperation and finding cost efficient launch methods. This is not least because it’s not as dependent on the whim of elected governments for direction, which can change completely from one administration to the next.

So for us scientists looking to expand our knowledge of space, it is a very exciting moment.

About The Authors:

Gareth Dorrian is a Post Doctoral Research Fellow in Space Science at the University of Birmingham and Ian Whittaker is a Lecturer in Physics at Nottingham Trent University

This article is republished from our content partners over at The Conversation under a Creative Commons license.

[futuristech-info]

Sierra Nevada eyes 2021 launch of Dream Chaser space plane

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