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Patrick Veillette, Ph.D.

Patrick Veillette, Ph.D.
Stall By Surprise: Aircraft’s AOA May Not Be Or Behave As You Believe  2
A professional pilot must know an aircraft’s aerodynamic limitations in all phases of flight and be familiar with conditions that cause instruments to display misleading information.
Shifting Jet Stream Patterns Are Impacting Aviation  2
Clear air turbulence (CAT) often strikes without warning and can toss unbuckled passengers, cabin crew and objects around, sometimes violently.
How To Prevent Flutter And Other Aeroelastic Modes 
Prevention of flutter and other aeroelastic modes requires proper maintenance, preflight attention and immediate reactions if it occurs in flight
Urban Upheaval: The Revolution Could Arrive Sooner Than Expected  2
Skeptics, myself included, have long been involved in the negatives of helicopter operations in metropolitan settings.
All About Jet Blast: A Potential Hazard On Ramps, Taxiways And Runways  2
Jet blast is created by turbine aircraft engines and can be powerful enough to cause large upsets to aircraft on the ground or close to the ground.
When Visibility And Ceiling Reports Differ From A Pilot’s Perception  1
The differences between what a human would “see” versus an automated station’s report can be significant when it comes to measuring ceiling and visibility.
Unreliable Airspeed Readings Made Worse By High-Altitude Ice Crystals  5
The accurate display of airspeed information at high altitude is vital because the margins between the low-speed and high-speed buffet margins can be thin.
More About High-Altitude Environment Dangers  2
Although transport aircraft have three independent speed-sensing systems, environmental factors such as high-altitude ice crystals have the potential to remove this redundancy and create simultaneous failures.
Fly-By-Wire Special Challenges And Precautions 
FBW systems present a special challenge in the event of inaccurate airspeed indications caused by reversion to laws/modes that alter flight envelope protection.
Maintaining Autorotation Proficiency: Practice Vital To Helo Training  6
As long as there are helicopters, the necessity will remain for the pilot to be proficient in autorotations.
Thin Margins In Wintry Takeoffs  2
While anti-icing fluids negate the serious effects of wing icing, recent research has determined the fluids themselves extract a significant penalty from the wing's aerodynamic capabilities.
Brief Encounters With Volcanic Ash Can Cause Long-Lasting Damage  3
A few unsuspecting flight crews have suddenly found their transports turned into gliders by volcanic eruption materials temporarily snuffing their engines.
Improvements Underway In Volcanic Ash Detection 
Attendees at the World Meteorological Organization's Volcanic Ash Workshop in October 2015 learned of efforts to improve the forecasting of volcanic ash plumes.
Flying Tired: Recovery From Sleep Loss Is Not So Simple  11
"Fatigue-related performance problems in aviation have been consistently underestimated and underappreciated."
How Bad Is The Pilot Fatigue Problem? 
Between 2010 and 2012, more than 6,000 European pilots were asked to self-assess the level of fatigue they experienced during their flight duties. The surveys confirm that pilot fatigue is a common, dangerous and underreported phenomenon in Europe.

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