Stall Onset Demos

To answer the fleet's questions about stall-onset rates, I'd pledged to do a series of demos. It's not the smoothest evening, but suitable for the purpose.

Remember Jon Thornburgh's advice when it comes to all UL aircraft: low weight and high drag make for a whole different scenario, when the engine fails.

Even though the SeaRey isn't a true ultralight, it IS a flying boat. That means lots of extra form drag, rapid speed decay when power goes away.

As you can see in these films, ANY light flying boat will lose airspeed so fast, when power is lost in a climb attitude, that stall onset might be achieved within normal pilot reaction time.

For this reason, flying boat operators need to fly with greater stall margins than the 130% Vso commonly used in the general aviation community.

Too, boat drivers need to account for the high CG that goes along with our topside engines. You'll notice that in the last demo, the aircraft abruptly attempts to roll inverted, along with beginning rotation: prelude to an inverted spin.

THESE ARE CHARACTERISTICS OF THIS T Y P E OF PLANE, OF WHICH THE SEAREY IS THE BEST!!

Category:

Science & Technology

Tags:

• SeaRey
• safety
• stall
• demo
• onset
• Rotax