TWiT Throwback (Video)

TWiT Throwback (Video)

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TWiT Throwback (Video) episodes

  • Know How... 168: Geared Turbofan, WinDroid, & Google History

    Pratt & Whitney's new Super Engine

  • Modern aircraft are all about the turbofan engine
  • The Turbofan combines massive amounts of power, with decent efficiency and impressive reliability.
  • Even the non-exotics are amazing works of engineering

    • Here's how a traditional turbofan works:

  • A Jet engine compresses air, adds fuel, burns it, then is thrusted forward by the expansion of exhaust gasses
  • A "Fan" moves huge amounts of air, thrusting itself forward (Think of the props on a Quadcopter)
  • A Turbofan combines the two: a HUGE fan in front of, and drive by a jet engine

    • In a modern high-bypass turbofan you have:

  • The Fan
  • The low-pressure compressor
  • The High pressure compressor
  • The Combustion chamber
  • High pressure turbine
  • Low pressure turbine

    • Here's the key

  • The low pressure turbine is connected by a shaft to the low pressure compressor and fan
  • The high pressure turbine is connected to the high-pressure compressor
  • So, as the gasses and burned and expanded, they provide the power to the fan and compressors that allow for the gasses to be burned and expanded.

    • This is a good system... but the folks at Pratt and Whitney just made it obsolete!

    The Pratt & Whitney "PurePower" Geared Turbofan

  • They burn 16% less fuel for the same thrust
  • They put out less NOX for the same thrust
  • The create 75% less noise while on the ground
  • It cost 30 years and $10 billion to make them work

    • Why is it so much better?

  • Let's talk about propellors.
  • Small props that spin quickly, vs large props that spin slowly
  • Large is more efficient, and less noisy
  • But we wouldn't use larger fans on Turbofans because the speeds as which you needed to spin the shaft for the compressors was spinning too fast for the ideal-sized fan.
  • So... P&W added a gear box (It's 20 inches in diameter and weighs 250lbs)

    • They used a orbital gear design to step down the speed of the low-pressure turbine/compressor shaft.

  • This allows the fan to spin much more slowly, but with far more torque
  • Slower speeds with more torque means they can use a more aggressive fan that moves more air at lower speeds.
  • While a traditional turbofan might have a 5:1 bypass... PurePower does 12:1

    • So... more efficient, more thorough burn (less pollutants), and MUCH quieter on the ground.

    WinDroid & Google History

    AMIDuOS!

  • Created by AMI - "American Megatrends - The company that so many of us know from their BIOS days"
  • They were founded in 1985 by Pat Sarma and S. Shankar (who will be on Triangulation in the future)
  • Their first customer was "PC's Limited" which became "Dell Computers"

    • But this is DuOS...

  • Unlike "Bluestacks" which is an Android App Emulator, DuOS is full-Android in either a VM or a Container
  • It gives FULL access to all the major peripherals (this was a major problem with emulators)
  • Keyboard, Mouse, touchscreen, microphone, ambient light sensor, accelerometers, compass, orientation, etc.
  • It also supposed variable screen sizes.

    • Notes:

  • There are two versions: AMIDuOS 1.1 (Running Android Jellybean) and AMIDuOS 2.0 (Running Android Lollipop)
  • Jellybean will cost you $10 // Lollipop will cost $15
  • Once you install, you WILL need to install Google Apps and Services

    • Let's talk about what Google stores in your online history

  • Websites
  • Voice Commands/Searches
  • Connected Devices
  • Location History
  • YouTube Video History
  • YouTube Search History
    • Feedback

    M

    These show notes have been truncated due to length. For the full show notes, visit https://twit.tv/shows/know-how/episodes/168

    Hosts: Fr. Robert Ballecer, SJ and Bryan Burnett

    Sponsors:

    • lynda.com/knowhow
    • holhom.com/twit

      • 58 min
    • This Week in Computer Hardware 340: AMD Kills Catalyst

      HDTV Deals with Robert Heron, Catalyst Drivers Are Now Crimson, Sweet Mini ITX R9 Nano Builds, YouTube Loves Cardboard, Kangaroo Pocket Sized Windows 10 PC, and more!

      Host: Patrick Norton

      Guest: Robert Heron

      Download or subscribe to this show at https://twit.tv/shows/this-week-in-computer-hardware.

      Thanks to CacheFly for the bandwidth for this show.

      Sponsors:

      • braintreepayments.com/twich
      • wealthfront.com/twich
      • holhom.com/twit

        • 1 hr 2 min
      • Tech News Today 1382: Microsoft in Your Ear

        Microsoft is working on a wearable computer that lives in your ear, Google turns up VR on YouTube, a new quadcopter gives you a drone's-eye view through virtual reality goggles, and more...

        Host: Mike Elgan

        Co-Host: Kashmir Hill

        Guest: Miriam Gottfried

        Check out the full show notes for today's episode.

        Download or subscribe to this show at https://twit.tv/shows/tech-news-today.

        Thanks to Cachefly for the bandwidth for this show.

        Sponsors:

        • prosper.com/tnt
        • gazelle.com

          • 38 min
        • Ham Nation 221: Dr. Tamitha Skov Live!

          Gordo tours the Powerwerxs facility, Dr. Tamitha Skov's solar report live, the return of Heathkit, and more!

          Hosts: Bob Heil, Gordon West, George Thomas, Don Wilbanks, and Valerie Hotzfeld

          Guests: Dr. Tamitha Skov and Mike Mraz

          Producer: Bryan Burnett

          Technical Director: Victor Bognot

          Editor: Victor Bognot

          Thanks to Joe Walsh who wrote and plays the Ham Nation theme.

          Subscribe to Ham Nation at https://twit.tv/shows/ham-nation

          Thanks to CacheFly for the bandwidth for this show.

          Sponsors:

          • Amazon.com/TWITRX
          • icomamerica.com/hamnation
          • dxengineering.com/hamnation

            • 1 hr 14 min
          • This Week in Google 325: Back in BlackBerry
            Google slammed the brakes on its acquisition machine, Nexus 6P unboxing, BlackBerry PRIV launching in the US on AT&T this Friday, and more.

            Host: Leo Laporte

            Guests: Mike Elgan and Ron Amadeo

            Download or subscribe to this show at https://twit.tv/shows/this-week-in-google.

            Thanks to CacheFly for the bandwidth for this show.

            Sponsors:

            • braintreepayments.com/twig
            • casper.com/twig - promo code: TWIG
            • lynda.com/twig

              • 2 hr 11 min
            • Android App Arena 70: Animated GIFs

              Jason Howell shows off apps to make animated GIFs, including Boomerang from Instagram, PHHHOTO, and Gif Me! Camera Pro. He also features Microsoft's new Arrow Launcher as this week's Big App.

              Host: Jason Howell

              Download or subscribe to this show at https://twit.tv/shows/android-app-arena.

              Bandwidth for Android App Arena is provided by CacheFly.

              14 min
            • Tech News 2Night 460: Disney's Circle of Control

              Ashley Rodriguez from Quartz gets into the details of the VW defeat device scandal, we'll tell you what you're worth to Facebook, Tesla scales back on autopilot, scientists 3D print human hair, and more...

              Host: Megan Morrone

              Subscribe to Tech News 2Night at https://twit.tv/shows/tech-news-2night

              Bandwidth for Tech News 2Night is provided by CacheFly.

              Sponsor:

              • Epson.com/ecotankleo

                • 12 min
              • iFive for the iPhone 167: Microsoft Band 2, Bedtime Math

                Answer emails and calls quickly from the Notification screen, impressions of the Microsoft Band 2 paired with the iPhone, Outlook updates its iPhone app, manage your stress and anxiety with Pacifica and use Bedtime Math before bed with your kids to boost math performance.

                Host: Megan Morrone

                Subscribe to iFive for the iPhone at https://twit.tv/shows/ifive-iphone

                Thanks to CacheFly for the bandwidth for this show.

                Sponsor:

                • gazelle.com

                  • 10 min
                • Windows Weekly 438: 0118 999 881 999 119 7253

                  Microsoft pushes Windows 10 even harder than before, Surface Pro 4 & Book get updates, Band 2 consensus, Cortana coming to iOS, and more!

                  Hosts: Leo Laporte, Mary Jo Foley, and Paul Thurrott

                  Download or subscribe to this show at https://twit.tv/shows/windows-weekly

                  Check out Paul's blog at thurrott.com

                  Check out Mary Jo's blog at AllAboutMicrosoft.com

                  Thanks to CacheFly for the bandwidth for this show.

                  The Windows Weekly theme music is courtesy of Carl Franklin.

                  Sponsors:

                  • prosper.com/windows
                  • audible.com/windows or text windows to 500-500
                  • lynda.com/windows

                    • 2 hr 12 min
                  • Tech News Today 1381: Do Tech Companies Protect Your Rights?

                    A new index ranks Silicon Valley companies on the rights of users, a new home gadget lets you control how your kids use the Internet, the new Google Nexus 6P bends right before it breaks, and more...

                    Host: Mike Elgan

                    Co-Host: Kevin Tofel

                    Guests: Sam Thielman, Salvador Rodriguez, and Sara Peters

                    Producer: Jason C. Cleanthes

                    Technical Director: Jason C. Cleanthes

                    Check out the full show notes for today's episode.

                    Download or subscribe to this show at https://twit.tv/shows/tech-news-today.

                    Thanks to CacheFly for the bandwidth for this show.

                    Sponsors:

                    • gazelle.com
                    • prosper.com/tnt

                      • 52 min

                    About TWiT Throwback (Video)

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                    Dig into the TWiT.tv archives and enjoy episodes from ten years ago. It's a tech time machine!