Avionics News October 2012 - 22

LIGHTNING DETECTION & DATALINK
Continued from page 21

Odds Are, You Will Survive The main reason for avoiding airspace near potential lightning strikes is because it’s simply no fun for flying. In essence, lightning avoidance is turbulence avoidance. Turbulence causes friction, which generates the static-electricity build-up that ultimately discharges as lightning. Turbulence strong enough to produce significant lightning is about as far from enjoyable as it gets in aviation. Additionally, turbulent-air electrical discharges begin within clouds well before they grow into visible lightning. Spherics devices, which may even detect clear-air electrical discharges – yes, they do occur – help by showing us where to avoid. In fact, one side benefit of the spherics devices is their value to pilots trying to avoid turbulence, even in clear air. The spherics system’s biggest benefit to pilots is they work in real time. To the extent they start showing activity before visible lightning begins – or in clear air – spherics devices serve a predictive role, because they can show where rough weather will likely happen.

Seeing the Big Picture: Datalink Shows What Onboard Radar Can’t The technology complimentary to spherics devices is weather datalink and a graphic display capable of showing what the data depict. Available from both ground-based and satellite-based sources, these systems all basically work the same way. A transmitter periodically broadcasts a data package with a composite Doppler weather radar image, lightning strike data, satellite images of cloud cover, as well as text and graphical weather depictions. Receivers specifically designed to work with the broadcast source digest the data and present it as the operator chooses – either as graphical images of Doppler radar, maps of IFR and VFR weather, or as text pages covering meteorological reports and terminal aerodrome forecasts, and PiReps, AirMets and Sigmets. These all require some form of a display to show the pilot the data. Today, that’s a broad spectrum of gear. Most of these systems are proprietary – the broadcast
Continued on page 24

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Avionics News October 2012

Table of Contents for the Digital Edition of Avionics News October 2012

Point of Communication
AEA Now
The View From Washington
International News and Regulatory Updates
Lightning Detection & Datalink
Member Profile
Cockpit Innovations
Member Profile
A Conversation With...
Understanding Autopilot Upgrades
Before & After
Member Profile
Pro-to-col
Business Basics
Theory & Practice
What's New
Marketplace Classifieds
Avionics News October 2012 - Intro
Avionics News October 2012 - Cover1
Avionics News October 2012 - Cover2
Avionics News October 2012 - 1
Avionics News October 2012 - 2
Avionics News October 2012 - 3
Avionics News October 2012 - Point of Communication
Avionics News October 2012 - 5
Avionics News October 2012 - AEA Now
Avionics News October 2012 - 7
Avionics News October 2012 - 8
Avionics News October 2012 - 9
Avionics News October 2012 - 10
Avionics News October 2012 - 11
Avionics News October 2012 - 12
Avionics News October 2012 - 13
Avionics News October 2012 - The View From Washington
Avionics News October 2012 - 15
Avionics News October 2012 - International News and Regulatory Updates
Avionics News October 2012 - 17
Avionics News October 2012 - 18
Avionics News October 2012 - 19
Avionics News October 2012 - Lightning Detection & Datalink
Avionics News October 2012 - 21
Avionics News October 2012 - 22
Avionics News October 2012 - 23
Avionics News October 2012 - 24
Avionics News October 2012 - 25
Avionics News October 2012 - 26
Avionics News October 2012 - 27
Avionics News October 2012 - Member Profile
Avionics News October 2012 - 29
Avionics News October 2012 - 30
Avionics News October 2012 - 31
Avionics News October 2012 - Cockpit Innovations
Avionics News October 2012 - 33
Avionics News October 2012 - 34
Avionics News October 2012 - 35
Avionics News October 2012 - 36
Avionics News October 2012 - 37
Avionics News October 2012 - 38
Avionics News October 2012 - 39
Avionics News October 2012 - Member Profile
Avionics News October 2012 - 41
Avionics News October 2012 - 42
Avionics News October 2012 - 43
Avionics News October 2012 - A Conversation With...
Avionics News October 2012 - 45
Avionics News October 2012 - Understanding Autopilot Upgrades
Avionics News October 2012 - 47
Avionics News October 2012 - 48
Avionics News October 2012 - 49
Avionics News October 2012 - 50
Avionics News October 2012 - 51
Avionics News October 2012 - 52
Avionics News October 2012 - 53
Avionics News October 2012 - 54
Avionics News October 2012 - 55
Avionics News October 2012 - Before & After
Avionics News October 2012 - 57
Avionics News October 2012 - Member Profile
Avionics News October 2012 - 59
Avionics News October 2012 - 60
Avionics News October 2012 - 61
Avionics News October 2012 - Pro-to-col
Avionics News October 2012 - 63
Avionics News October 2012 - 64
Avionics News October 2012 - 65
Avionics News October 2012 - Business Basics
Avionics News October 2012 - 67
Avionics News October 2012 - 68
Avionics News October 2012 - 69
Avionics News October 2012 - Theory & Practice
Avionics News October 2012 - 71
Avionics News October 2012 - 72
Avionics News October 2012 - 73
Avionics News October 2012 - What's New
Avionics News October 2012 - 75
Avionics News October 2012 - 76
Avionics News October 2012 - 77
Avionics News October 2012 - Marketplace Classifieds
Avionics News October 2012 - 79
Avionics News October 2012 - 80
Avionics News October 2012 - Cover3
Avionics News October 2012 - Cover4
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