Flying All The Angles

Are you a proactive or reactive pilot? From our early primary training days, weve learned to fly by the airspeed indicator and listen for the stall warning horn when we venture too close to the lower edge of the planes airspeed envelope. Or, we live with the monotone blare while practicing the stall series. But what does it really tell us? Like other traditional primary instruments, there is some level of lag in their indications, and the information we receive is delayed or incomplete. Enter the angle of attack (AOA) indicator. While ubiquitous in gliders, where lift is life, chances are good your primary trainer did not have such instrumentation on board, although your training covered the concept of angle of attack. Ah, stalls. During primary training, we memorize the aircrafts stall speeds, clean and dirty, in 1G flight. We are further admonished that the stall speed increases as the wing loading, as well as gross weight, increases. And then theres density altitude to consider. All these factors conspire to sabotage lift, and while the dissipation of lift has its place (such as right before touchdown), its better to be proactive in preserving lift than chasing its loss.

Key Takeaways:

• Traditional flight instruments like airspeed indicators and stall warning horns are reactive and exhibit lag, providing delayed information that can be insufficient for proactively preventing stalls.
• Angle of Attack (AOA) indicators provide real-time, direct information about a wing's lift relative to its critical stall angle, regardless of airspeed, attitude, or aircraft weight.
• AOA instruments significantly enhance flight safety by helping pilots avoid stalls, especially during high-workload phases like takeoff and approach, and optimize approach speeds for more consistent landings.
• While long common in gliders, military, and experimental aircraft, AOA technology is increasingly being integrated into certified general aviation to improve overall safety and reduce stall-related accidents.

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