Comments on: CAP G1000 – Scenario 2 Flying the Glass http://airspeedonline.com/2009/04/cap-g1000-scenario-2-flying-the-glass/ Mon, 15 May 2017 14:44:55 +0000 hourly 1 https://wordpress.org/?v=3.9.40 By: Pan http://airspeedonline.com/2009/04/cap-g1000-scenario-2-flying-the-glass/#comment-2067 Fri, 31 Jan 2014 03:09:06 +0000 http://airspeedonline.com/?p=248#comment-2067 Thanks Deadstick, The wiki article is exlencelt,thank you, but, if you read it carefully you will note that the formula you give is an approximation over special conditions of temperature and pressure in the troposphere where aircraft fly. It is not correct to say the higher you go the colder it gets Look at the graph showing altitude, temperature, pressure, and density in the article you cite. Also below are paragraphs taken from the article you cite which show you to be correct only at lower altitudes but not correct at the higher altitudes discussed in the original post above 100,000 feet. Density and pressure decrease smoothly with altitude, but temperature (red) does not. The speed of sound (blue) depends only on the complicated temperature variation at altitude and can be calculated from it, since isolated density and pressure effects on sound speed cancel each other. Speed of sound increases with height in two regions of the stratosphere and thermosphere, due to heating effects in these regions. This equation is correct to a much wider temperature range, but still depends on the approximation of heat capacity ratio being independent of temperature, and for this reason will fail, particularly at higher temperatures. It gives good predictions in relatively dry, cold, low pressure conditions, such as the Earth’s stratosphere. The equation fails at extremely low pressures and short wavelengths, due to dependence on the assumption that the wavelength of the sound in the gas is much longer than the average mean free path between gas molecule collisions. File:Comparison US standard atmosphere 1962.svg

]]> By: Kent http://airspeedonline.com/2009/04/cap-g1000-scenario-2-flying-the-glass/#comment-251 Sat, 18 Apr 2009 19:35:00 +0000 http://airspeedonline.com/?p=248#comment-251 Steve,

Once you have the approach selected, you can press FPL to get to the flight plan page, push the FMS knob to activate the cursor, turn the large knob to select whichever intermediate leg of the approach (or anywhere else in the flight plan) you want to fly, and then either push the “ACT LEG” soft key or push the Menu button and choose Activate Leg. :-)

The G1000 is easy to use as far as glass panels go, but there’s still a ton of functionality that’s really not obvious, this certainly being in that category! You can read the manual all you want, but to really get it to “stick” you have to do it in the airplane. So, the best way I’ve found to learn this stuff is to go on a long-ish cross country flight with another pilot aboard to watch for traffic (and hey, I know a pilot with some free time ;-), and just play with it. Use all the features you can remember and/or find, then go home and read the manual again to figure out what you haven’t found yet. Write it down, then go fly again. Lather, rinse, repeat.

Have fun! (Like I need to tell you that.)

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