Avionics News March 2013 - 30

industry

C

TESTING

TECHNOLOGY
30

avionics news

•

march

2013

an you identify two parts
of an airplane with French
names that are essential to
everyday flight? If you said “aileron,” French for “little wing,”
congratulations. Bravo if you knew
the second, the pitot-static system.
We all know it measures the dynamic and static air pressures that
instruments and air-data computers
translate into altitude and airspeed
measured in miles per hour, knots,
Mach, feet and feet per minute.
Now, for bonus points, who invented the system, why did he invent it
and when?
Obviously French, engineer Henri
de Pitot (1695-1771) invented his
eponymous tube and its essential
sibling, the static tube, in 1732,
mounting two glass tubes in a wood
frame to measure the velocity of
flowing water and a ship’s wake.
Like it does today, the pitot tube
pointed into the flow, the static tube
was perpendicular to it, and the user
noted the level in each after lowering it into the water.
Unfortunately, the math Pitot
needed to accurately analyze its
readings hadn’t found its way to
him.
“He equated the reading to the velocity attained by a falling body and
prepared calibration tables of questionable accuracy,” wrote George O.
Brown, a professor of biosystems
and agricultural engineering at
Oklahoma State University, in his
2003 paper titled “Henry Darcy’s
Perfection of the Pitot Tube.”
A French engineer fascinated with
hydraulics, Henry Philibert Gaspard
Darcy (1803-1858) is famous for
building a pressurized fresh-water



Avionics News March 2013

Table of Contents for the Digital Edition of Avionics News March 2013

Point of Communication
AEA Now
The View from Washington
International News and Regulatory Updates
Android Devices and Software to EFBs, Tablets and Accessories
Member Profile
Testing Technology
Avionics News Through the Years
A Conversation With...
Member Profile
AEAviators
Minimal Panels
Before & After
Clear Skies Ahead
Aviation Aces
Legal Ease
Meat and Potatoes Avionics
Business Basics
Lines of Communication
What's New
Avionics News March 2013 - Intro
Avionics News March 2013 - Cover1
Avionics News March 2013 - Cover2
Avionics News March 2013 - 1
Avionics News March 2013 - 2
Avionics News March 2013 - 3
Avionics News March 2013 - Point of Communication
Avionics News March 2013 - 5
Avionics News March 2013 - AEA Now
Avionics News March 2013 - 7
Avionics News March 2013 - 8
Avionics News March 2013 - 9
Avionics News March 2013 - 10
Avionics News March 2013 - 11
Avionics News March 2013 - 12
Avionics News March 2013 - 13
Avionics News March 2013 - The View from Washington
Avionics News March 2013 - 15
Avionics News March 2013 - International News and Regulatory Updates
Avionics News March 2013 - 17
Avionics News March 2013 - 18
Avionics News March 2013 - 19
Avionics News March 2013 - Android Devices and Software to EFBs, Tablets and Accessories
Avionics News March 2013 - 21
Avionics News March 2013 - 22
Avionics News March 2013 - 23
Avionics News March 2013 - 24
Avionics News March 2013 - 25
Avionics News March 2013 - Member Profile
Avionics News March 2013 - 27
Avionics News March 2013 - 28
Avionics News March 2013 - 29
Avionics News March 2013 - Testing Technology
Avionics News March 2013 - 31
Avionics News March 2013 - 32
Avionics News March 2013 - 33
Avionics News March 2013 - 34
Avionics News March 2013 - 35
Avionics News March 2013 - Avionics News Through the Years
Avionics News March 2013 - 37
Avionics News March 2013 - A Conversation With...
Avionics News March 2013 - 39
Avionics News March 2013 - Member Profile
Avionics News March 2013 - 41
Avionics News March 2013 - 42
Avionics News March 2013 - 43
Avionics News March 2013 - AEAviators
Avionics News March 2013 - 45
Avionics News March 2013 - 46
Avionics News March 2013 - 47
Avionics News March 2013 - Minimal Panels
Avionics News March 2013 - 49
Avionics News March 2013 - 50
Avionics News March 2013 - 51
Avionics News March 2013 - 52
Avionics News March 2013 - 53
Avionics News March 2013 - Before & After
Avionics News March 2013 - 55
Avionics News March 2013 - Clear Skies Ahead
Avionics News March 2013 - 57
Avionics News March 2013 - 58
Avionics News March 2013 - 59
Avionics News March 2013 - Aviation Aces
Avionics News March 2013 - 61
Avionics News March 2013 - 62
Avionics News March 2013 - 63
Avionics News March 2013 - Legal Ease
Avionics News March 2013 - 65
Avionics News March 2013 - 66
Avionics News March 2013 - 67
Avionics News March 2013 - 68
Avionics News March 2013 - 69
Avionics News March 2013 - Meat and Potatoes Avionics
Avionics News March 2013 - 71
Avionics News March 2013 - 72
Avionics News March 2013 - 73
Avionics News March 2013 - 74
Avionics News March 2013 - 75
Avionics News March 2013 - 76
Avionics News March 2013 - 77
Avionics News March 2013 - Business Basics
Avionics News March 2013 - 79
Avionics News March 2013 - 80
Avionics News March 2013 - 81
Avionics News March 2013 - Lines of Communication
Avionics News March 2013 - 83
Avionics News March 2013 - 84
Avionics News March 2013 - 85
Avionics News March 2013 - 86
Avionics News March 2013 - 87
Avionics News March 2013 - 88
Avionics News March 2013 - 89
Avionics News March 2013 - What's New
Avionics News March 2013 - 91
Avionics News March 2013 - 92
Avionics News March 2013 - 93
Avionics News March 2013 - 94
Avionics News March 2013 - 95
Avionics News March 2013 - 96
Avionics News March 2013 - Cover3
Avionics News March 2013 - Cover4
https://www.nxtbook.com/allen/avne/60-10
https://www.nxtbook.com/allen/avne/60-9
https://www.nxtbook.com/allen/avne/60-8
https://www.nxtbook.com/allen/avne/60-7
https://www.nxtbook.com/allen/avne/60-6
https://www.nxtbook.com/allen/avne/60-5
https://www.nxtbook.com/allen/avne/60-4
https://www.nxtbook.com/allen/avne/60-3
https://www.nxtbook.com/allen/avne/60-2
https://www.nxtbook.com/allen/avne/60-1
https://www.nxtbook.com/allen/avne/59-12
https://www.nxtbook.com/allen/avne/59-11
https://www.nxtbook.com/allen/avne/59-10
https://www.nxtbook.com/allen/avne/59-9
https://www.nxtbook.com/allen/avne/59-8
https://www.nxtbook.com/allen/avne/59-7
https://www.nxtbook.com/allen/avne/59-6
https://www.nxtbook.com/allen/avne/59-5
https://www.nxtbook.com/allen/avne/59-4
https://www.nxtbook.com/allen/avne/59-3
https://www.nxtbook.com/allen/avne/59-2
https://www.nxtbook.com/allen/avne/59-1
http://www.brightcopy.net/allen/avne/58-12
http://www.brightcopy.net/allen/avne/58-11
http://www.brightcopy.net/allen/avne/58-10
http://www.brightcopy.net/allen/avne/58-9
http://www.brightcopy.net/allen/avne/58-8
http://www.brightcopy.net/allen/avne/58-7
http://www.brightcopy.net/allen/avne/58-6
http://www.brightcopy.net/allen/avne/58-5
http://www.brightcopy.net/allen/avne/58-4
http://www.brightcopy.net/allen/avne/58-3
http://www.brightcopy.net/allen/avne/58-2
http://www.brightcopy.net/allen/avne/58-1
http://www.brightcopy.net/allen/avne/57-12
http://www.brightcopy.net/allen/avne/57-11
http://www.brightcopy.net/allen/avne/57-10
http://www.brightcopy.net/allen/avne/57-9
http://www.brightcopy.net/allen/avne/57-8
http://www.brightcopy.net/allen/avne/57-7
http://www.brightcopy.net/allen/avne/57-6
http://www.brightcopy.net/allen/avne/57-5
http://www.brightcopy.net/allen/avne/57-4
http://www.brightcopy.net/allen/avne/57-3
http://www.brightcopy.net/allen/avne/57-2
http://www.brightcopy.net/allen/avne/57-1
http://www.brightcopy.net/allen/avne/56-12
http://www.brightcopy.net/allen/avne/56-11
http://www.brightcopy.net/allen/avne/56-10
http://www.brightcopy.net/allen/avne/56-9
http://www.brightcopy.net/allen/avne/56-8
http://www.brightcopy.net/allen/avne/56-7
http://www.brightcopy.net/allen/avne/56-6
http://www.brightcopy.net/allen/avne/56-5
http://www.brightcopy.net/allen/avne/56-4
http://www.brightcopy.net/allen/avne/56-3
http://www.brightcopy.net/allen/avne/56-2
http://www.brightcopy.net/allen/avne/56-1
http://www.brightcopy.net/allen/avne/55-12
http://www.brightcopy.net/allen/avne/55-11
http://www.brightcopy.net/allen/avne/55-10
http://www.brightcopy.net/allen/avne/55-9
http://www.brightcopy.net/allen/avne/55-8
http://www.brightcopy.net/allen/avne/55-7
http://www.brightcopy.net/allen/avne/55-6
http://www.brightcopy.net/allen/avne/55-5
http://www.brightcopy.net/allen/avne/55-4
http://www.brightcopy.net/allen/avne/55-3
http://www.brightcopy.net/allen/avne/55-02
http://www.brightcopy.net/allen/avne/55-01
http://www.brightcopy.net/allen/avne/54-12
http://www.brightcopy.net/allen/avne/54-11
http://www.brightcopy.net/allen/avne/54-10
http://www.brightcopy.net/allen/avne/54-9
http://www.brightcopy.net/allen/avne/54-8
http://www.brightcopy.net/allen/avne/54-7
http://www.brightcopy.net/allen/avne/54-6
http://www.brightcopy.net/allen/avne/54-5
http://www.brightcopy.net/allen/avne/54-4
http://www.brightcopy.net/allen/avne/54-3
http://www.brightcopy.net/allen/avne/54-2
http://www.brightcopy.net/allen/avne/54-1
http://www.brightcopy.net/allen/avne/53-12
http://www.brightcopy.net/allen/avne/53-11
http://www.brightcopy.net/allen/avne/53-10
http://www.brightcopy.net/allen/avne/53-9
http://www.brightcopy.net/allen/avne/53-8
http://www.brightcopy.net/allen/avne/53-7
http://www.brightcopy.net/allen/avne/53-6
http://www.brightcopy.net/allen/avne/53-5
http://www.brightcopy.net/allen/avne/53-4
http://www.brightcopy.net/allen/avne/53-3
http://www.brightcopy.net/allen/avne/53-2
http://www.brightcopy.net/allen/avne/53-1
http://www.brightcopy.net/allen/avne/52-12
http://www.brightcopy.net/allen/avne/52-11
http://www.brightcopy.net/allen/avne/52-10
http://www.brightcopy.net/allen/avne/52-9
http://www.brightcopy.net/allen/avne/52-8
https://www.nxtbook.com/allen/avne/52-7
https://www.nxtbook.com/allen/avne/52-6
https://www.nxtbook.com/allen/avne/52-5
https://www.nxtbook.com/allen/avne/52-4
https://www.nxtbook.com/allen/avne/52-3
https://www.nxtbook.com/allen/avne/52-2
https://www.nxtbook.com/allen/avne/52-1
https://www.nxtbook.com/allen/avne/51-12
https://www.nxtbook.com/allen/avne/51-11
https://www.nxtbook.com/allen/avne/51-10
https://www.nxtbook.com/allen/avne/51-9
https://www.nxtbook.com/allen/avne/51-8
https://www.nxtbook.com/allen/avne/51-7
https://www.nxtbook.com/allen/avne/51-6
https://www.nxtbook.com/allen/avne/51-5
https://www.nxtbook.com/allen/avne/51-4
https://www.nxtbook.com/allen/avne/51-3
https://www.nxtbook.com/allen/avne/51-2
https://www.nxtbook.com/allen/avne/51-1
https://www.nxtbook.com/allen/avne/50-12
https://www.nxtbook.com/allen/avne/50-11
https://www.nxtbook.com/allen/avne/50-10
https://www.nxtbook.com/allen/avne/50-9
https://www.nxtbook.com/allen/avne/50-8
https://www.nxtbook.com/allen/avne/50-7
https://www.nxtbook.com/allen/avne/50-6
https://www.nxtbook.com/allen/avne/50-5
https://www.nxtbook.com/allen/avne/50-4
https://www.nxtbook.com/allen/avne/50-3
https://www.nxtbook.com/allen/avne/50-2
https://www.nxtbook.com/allen/avne/50-1
https://www.nxtbook.com/allen/avne/49-12
https://www.nxtbook.com/allen/avne/49-11
https://www.nxtbook.com/allen/avne/49-10
https://www.nxtbook.com/allen/avne/49-9
https://www.nxtbook.com/allen/avne/49-8
https://www.nxtbook.com/allen/avne/49-7
https://www.nxtbook.com/allen/avne/49-6
https://www.nxtbook.com/allen/avne/49-5
https://www.nxtbook.com/allen/avne/49-4
https://www.nxtbook.com/allen/avne/49-3
https://www.nxtbook.com/allen/avne/49-2
https://www.nxtbook.com/allen/avne/49-1
https://www.nxtbook.com/allen/avne/48-12
https://www.nxtbook.com/allen/avne/48-11
https://www.nxtbookmedia.com