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Roman Mednitzer
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Lives in Salzburg, Austria
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Roman Mednitzer

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Roman Mednitzer

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Pretty picture: Sunset over Gale crater

Imagine yourself on a windswept landscape of rocks and red dust with mountains all around you. The temperature suddenly plunges, as the small Sun sets behind the western range of mountains. Only a blue glow is left behind to mark its departure.

More here:

(Image: NASA / JPL / MSSS / Damia Bouic)
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Roman Mednitzer

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NASA Space Launch System Engine Getting Ready for Test Stand
Formerly known as the space shuttle main engine, the RS-25 accumulated over 1 million seconds—or almost 280 hours — of hot fire experience during 135 missions and numerous related engine tests like the one pictured here. Four RS-25 engines will power the core stage of NASA's Space Launch System (SLS) and the engine will go back in the stand to begin testing this summer at NASA's Stennis Space Center.

Image credit: Aerojet Rocketdyne
Caption Credits: Kim Henry, Marshall Space Flight Center, Huntsville, Ala., Rebecca Strecker, Stennis Space Center, Miss.

+NASA Stennis 
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#NASA  #Space #Rocket #SLS #Orion #Engine  #RS25 #Test #Shuttle #AerojetRocketdyne
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Augmented Reality (AR) & Wearable Technology Panel Discussion:

Wearable technologies can be part of an Augmented Reality-assisted information acquisition and delivery system by providing more sensors to detect the user’s context and an alternative to looking at a smartphone or tablet screen for consuming AR experiences.

Many who have become aware of the potential of Augmented Reality in the past 2 years have been introduced to the concepts by reading an article or watching a YouTube video about Google’s wearable display, Project Glass (aka Google Glass). Glass provides, as part of a complete system the user wears on their face and near the eye, a small display for information snacking and sensors, such as the camera and microphone, for “capturing” activity in the real world with photographs and video clips.

Google’s introduction of Glass has increased the attention paid by the media and, as a result by others, to the providers of wearable technologies. During this session we will hear expert opinions about the Project Glass, the general rise in wearable technology options for mobile AR experience delivery and context acquisition, and how this trend can impact learning, business and humanity.

• Is Google Project Glass the first wearable display for AR?
• What is the size of this entire category of technology and what are the most important segments?
• Who provides wearable technology that is fully “AR ready”?
• How do users obtain and control wearable technology for AR experiences?
• What about wearable technology style?
• When will costs of these special devices go down and the technology become mainstream?

  Steven Feiner, Columbia University
  Brian Ballard, CEO APX Labs
  Josh Waddell, SAP

Moderator: Christine Perey, PEREY Research & Consulting and the AR for Enterprise Alliance

Hosted by IEEE

Visit the Official Site:
This Hangout On Air is hosted by IEEE Standards Association. The live video broadcast will begin soon.
"AR & Wearable Technology" Google+ Hangout, hosted by IEEE
Today, April 17, 11:00 AM
Hangouts On Air

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Welcome to our Project Tango Google+ community.

You can connect with other developers and enthusiasts, who will be sharing their vision for a future where all mobile devices have a human scale understand of space and motion.

We have created some sections in the community for you, including Announcements, Discussion, Gaming, Robotics, Retail & Shopping. You can connect to people in your area and share you ideas/demos with them. 

We’ll also be posting project updates from the team and sharing demos from our developers there in addition to our website and the Google ATAP YouTube channel.
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Roman Mednitzer

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NASA SLS J-2X Engine Wraps Up Latest Test Series
The J-2X is a liquid-fuel cryogenic rocket engine planned for use on NASA's Space Launch System. The J-2X engine wrapped up its latest test series on April 10, 2014 at NASA's Stennis Space Center. A number of J-2X test objectives offer benefits to the upcoming RS-25 test campaign. 

Built in the United States by Aerojet Rocketdyne, the J-2X will burn cryogenic liquid hydrogen & liquid oxygen propellants, with each engine producing 1,307 kN (294,000 lbf) of thrust in vacuum at a specific impulse (Isp) of 448 seconds (4.39 km/s). The engine will have a mass of approximately 5,450 pounds (2,470 kg), significantly heavier than its predecessors. 

"From the start, testing of the J-2X engine progressed at an incredible pace and provided invaluable data," said Gary Benton, J-2X and RS-25 test project manager at Stennis. "We began J-2X powerpack testing for the engine in late 2007 and conducted a wide range of full-engine developmental tests since then. We have collected data on engine and test stand capabilities and performance that will benefit the nation’s space program for years to come."

A number of J-2X test objectives offer benefits to the upcoming battery of RS-25 tests, including defining the performance, control and data characteristics of the test stand, and new processes used to record and interpret engine performance data.

Many of the modifications made on the A-1 test stand are based on improvements made throughout J-2X testing. For example, RS-25 thrust measurement, data collection, engine control system architecture and control of propellant conditions at the engine inlet all will be based on J-2X test experience.

Another strength the RS-25 test team will inherit is experience. The test crew and data review team have continually improved the efficiency of test operations leading up to RS-25 testing.

"We’re gearing up for what we trust will be a successful and essential RS-25 test series  -- technically as well as on cost and schedule -- and our J-2X experience directly contributes to this need," said Tom Byrd, deputy manager in the SLS Liquid Engines Office at NASA's Marshall Space Flight Center in Huntsville, Ala. The SLS Program is managed at the Marshall Center. "The manufacturing and testing we just completed will continue to be beneficial to the RS-25, the SLS Program and the agency's initiatives."

As future missions are defined for the 130-metric-ton vehicle -- the largest configuration planned -- NASA will consider various engine options that are the best value and design.

For more information on SLS, visit:  http:/

Video Credit: NASA/SSC,
Caption Credit: Kim Henry, Marshall Space Flight Center, Huntsville, Ala., Rebecca Strecker, Stennis Space Center, Miss., Wikipedia

+NASA Stennis 
+NASA Marshall 
+NASA's Marshall Center 
+Aerojet Rocketdyne 

#NASA #Space #Rocket #SLS #Orion #Engine #J2X #Test #AerojetRocketdyne
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What will it take to continue sending humankind beyond Earth? Our experts discuss: #Space
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Information Technologist
Information Technology, Network Engineering, Electronics, Programming, PHP, Python, Linux, Debian, RedHat
  • GmbH
    Information Technologist, 2012 - present
    Apprentice, System Support, Programming (PHP), Customer Support
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Salzburg, Austria
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Drei Linden Siedlung 806 A-5412 Puch bei Salzburg
Address GmbH Lederergasse 6 A-5204 Straßwalchen
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Science, Research & Technology

Science, Research, Physics, Mathematics, Technology, Aerospace, Astronomies, Electronics, Embedded Systems, IoT, Intelligent Systems, Information Technology, Information Security, Network Engineering, Radio, Antennas, Cisco, CCNA, Routing, Switching, SDN, Virtualization, KVM, Cloud, OpenStack, OpenShift, Linux, System Administration, Debian, Ubuntu, RedHat, Android, Chrome OS, Programming, PHP, Python, C++, Javascript, MySQL, Google, Automation, Autonomous Systems, Arduino, PIC, FPGA, Verilog, SCADA, Cybernetics, Emerging Technologies, Transhumanism, Artificial Intelligence, Robotics, Biotechnology, Nanotechnology, Prosthetics, Implants, RFID, NFC, Augmented Reality, Wearable Electronics, EURES, Continued Education, Courses, Certification

IEEE - Institute for Electrical and Electronics Engineers
Associate Member - Region 8 Section Austria
  • BFI Salzburg
    GCE Advanced Levels, 2013 - present
    Electrical Engineering, Mathematics, English, German
  • LBS 4 Salzburg
    Information Technology, 2013 - present
    Network Engineering, Computer Engineering, Electronics, Programming, Operating Systems, Linux, Microsoft Windows
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