Due to the unusually large number of tornadoes, as reported by NOAA for the month of April
at over 800, we are offering a $100 discount off our retail price of $249 for the kit through the end of August.
The windstorm damage of over 70 aircraft at Sun 'N Fun was
so tragic! We can't say enough about the flightline security of aircraft in high winds.
Please click to our Registration Page to take advantage of this limited offer.
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Welcome to the home of AeroSpoiler, where we will show you how to preserve your aircraft investment in the event
of a severe storm's high winds. Airplane wind damage is the highest cause of damage an aircraft can get while
tied down(hail being the second). Nothing can truly prevent airplane wind damage, because Mother Nature can get pretty ugly. Combining many methods of storm damage
prevention is a good idea, because each method adds a different mode of limiting airplane damage. Our removable spoiler
can reduce the amount of stretching pressure that wing lift can put on your tiedowns. Note: the AeroSpoiler cannot be used on cloth wings!
You still need your tie downs, but their value is much more limited when the wind
rises to lift-off, or rotation airspeed (or higher).
Your tie downs are only as good as
the components used, and many aircraft only have three tie down points or eyehooks in which to attach. Ropes can stretch,
and get moldy with age, and break due to exposure to the sun. Some private airfields' flightlines don't have
pad-eyes or anchor points at all, so you must drive some sort of anchor into the soil. In addition, extra tiedown components taken aboard the aircraft
will affect your weight and balance, as well as the fuel consumption rate. But even properly
installed anchors in an airfield may not help overcome the lift of a high windspeed over the wings. Flightline
safety is paramount for your aviation investment, and the AeroSpoiler is one flightline accessory that can
truly increase your chances of reducing aiplane wind damage. If you don't have a private hangar, the Aerospoiler may be your most valuable hold-down accessory!
How it WorksAirplane wings generate
lift from wind because the cambered(curved) upper surface of the wing speeds up airflow over the wing's upper surface
versus the airflow underneath the wing. This effect on the airfoil causes the pressure above the wing to be reduced
in contrast to the pressure underneath the wing. It is easy to see
how pushing the wing through the air with engine thrust causes the wings to lift. It is not as easy
to see how the aircraft can be parked, and
high storm winds can cause the same lifting effect. The upper wing surface causes the wind speed
over the top surface
to speed up greatly as wind speed increases. A quickly installed AeroSpoiler increases the angle-of-attack(AOA)of the
wing to the stall point. Our Computerized Fluid Dynamics(CFD) modeling , as shown in the graph on our Wind Test Page
indicates that our temporary spoiler kit reduces up to 96% of lift at high wind speeds up to 200mph. Other tie down enhancements and variations
such as spoiler boards have the disadvantage of being complicated to mount. Sandbags are heavy and affect
your flight weight, and can cause permanent damage to the wing. BTW, sand bags actually change the lift of the wing
in a similar fashion to the AeroSpoiler, although not as efficiently; and only as long as they stay on the wing. Usually, they must be held down
by cargo straps, adding more complexity and more hands to install. Our spoiler system requires no tools, and can be installed by a single person. In addition,
the kit will not interfere with any other hold-downs you usually use.
FAA suggestions are that any tie down
system have a breaking point of greater than 3000lbs, and even with our kit installed, you will want to meet or
exceed this recommendation.
NOTE: The AeroSpoiler CANNOT be used with cloth wings!
An aircraft hangar is the best tie down method, but when the weather gets rough, or whenever you park outside at the airfield, the AeroSpoiler
adds a significant measure of extra protection in case the weather changes suddenly, especially if you don't have hangar space.
Curiously enough, the FAA recommends you point the nose of the aircraft into the forecasted direction
of winds yet to come, possibly to reduce the footprint of the airplane.
However, the designed purpose of the wings are to lift the aircraft. The AeroSpoiler is a temporary, detachable
spoiler that spoils the Bernoulli airflow and greatly reduces the lift of the wings facing into the wind.
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