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Wind Triangle Geometry—Earth, Wind and Airplanes—How pilots adjust for wind

Wind Triangle Geometry—Earth, Wind and Airplanes—How pilots adjust for wind
Wind Triangle Geometry—Earth, Wind and Airplanes—How pilots adjust for wind
Wind Triangle Geometry—Earth, Wind and Airplanes—How pilots adjust for wind
Wind Triangle Geometry—Earth, Wind and Airplanes—How pilots adjust for wind
Wind Triangle Geometry—Earth, Wind and Airplanes—How pilots adjust for wind
Wind Triangle Geometry—Earth, Wind and Airplanes—How pilots adjust for wind
Wind Triangle Geometry—Earth, Wind and Airplanes—How pilots adjust for wind
Wind Triangle Geometry—Earth, Wind and Airplanes—How pilots adjust for wind
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Geometry, trigonometry, geography...and aviation. Teach your students about the way airplane pilots compensate for the effect of wind on a flight path.

In 240 B.C., Eratosthenes knew the Earth was round and proceeded to measure its circumference. Airplane pilots ever since have used “great circle routes” for long-distance flights to save time and fuel—along with careful consideration of the wind flowing around the Earth.

Introduce (or re-introduce) your students to Eratosthenes, then show them how student pilots graph “wind triangles” to visualize the effect of wind on a flight. In the process, we’ll discuss geometry, trigonometry, mathematics—and some history—in a lively, practical way.

All you need is a protractor, a ruler, and a blank piece of paper for each student. [Templates for creating your own paper or cardstock protractors and rulers are included in case you don’t have those items handy in your classroom.]

When we graph three items of information:
1. True Course (or Track),
2. Wind Direction and Speed, and
3. The Airplane’s Airspeed;

We can determine :
4. Groundspeed,
5. Wind-Correction Angle, and
6. True (wind-corrected) Heading.

Then it is possible to calculate the en route time of a flight.

We'll obtain the “magnetic variation” for the flight route from an aeronautical chart (illustrated in the slideshow) that will be added to or subtracted from the true heading, as appropriate, to give us the magnetic heading.

Along the way, your students will learn about the two “North Poles” (and “South Poles”) and why a flight that departs Chicago, Illinois, USA for Beijing, China flies northwest instead of west for the first couple of thousand miles.

The slideshow concludes with an examination of Amelia Earhart’s navigation log for her 18-hour flight from Honolulu, Hawaii to Oakland, California in 1935.

A 12-question quiz is included in both PDF and (editable) Microsoft Word formats.

The slideshow is provided in PowerPoint Show format, only, because certain graphic elements (the protractors) do not display properly in the PDF format.

I hope you and your students enjoy using this unit!

Valerie Salven
BGI (Basic Ground Instructor) and
Instrument-Rated Private Pilot

Please remember that this product is sold for use by a single user in a single classroom, home or office; reuse, repackaging, uploading or reposting online in any form is prohibited. You may purchase additional licenses of this product for friends and colleagues at a discount through your account. Thank you for respecting my copyright.

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Total Pages
95 pages
Answer Key
Included
Teaching Duration
90 minutes
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