Saw-tooth Climb Test to determine Vx & Vy

Saw-tooth Climb Test to determine Vx & Vy

Postby sonex1374 » Sun Aug 23, 2020 1:22 pm

I've written about using a "saw-tooth climb test" as a method of determining climb speeds (Vx, Vy, and Best Glide speed), and I thought I'd do a video showing the test in more detail. This method has been around a long time, and I've simply adapted it for my own purposes. You can find the video and write-up at the links below.

Video: https://youtu.be/SmKFbCJwBus
Write-up: http://sonex604.com/flight_testing2.html
Spreadsheet: http://sonex604.com/misc/flight_testing ... dsheet.xls

The saw-tooth climb/descent test is flown in the airplane to collect data at a variety of airspeeds. This data is then massaged into several graphs that can tell us our speeds. I've developed my own flight test spreadsheet that automates much of this work, and if you follow the test procedure outlined and simply plug in the data the spreadsheet does all the hard work for you.

Watch the video, download and review the spreadsheet, then go fly the test profile in your airplane. It's actually fun, and the results will help you create a customized pilot operating handbook with useful performance information.

Jeff
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Re: Saw-tooth Climb Test to determine Vx & Vy

Postby Rofomoto » Sun Aug 23, 2020 8:16 pm

This is great. Thanx!!!
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Re: Saw-tooth Climb Test to determine Vx & Vy

Postby WesRagle » Sun Aug 23, 2020 8:24 pm

Rofomoto wrote:This is great. Thanx!!!


Ditto. I'm reading about ASI calibration right now. Need to do that first.

Wes
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