Flying Qualities and the Horizontal Tail

An airplane's horizontal tail is critical to stabilizing the airplane in pitch, trimming out pitching moments caused by the wing and providing control power for maneuverability.

Stressing Structure: Margins of Safety

Margins of Safety.

Wind Tunnel

Design process: balance.

Wind Tunnel

Barnaby Wainfan looks at unconventional flight-control configurations in the cockpit and why they can throw even a seasoned pilot.

Wind Tunnel

Critical flutter airspeed.

Wind Tunnel

Columnist Barnaby Wainfan continues his flight-testing discussion by taking up the topic of longitudinal stability. By identifying the origin of the problem, whether it be a control-system issue, a too-small static margin, or a combination of the two, the flight tests he recommends will help to isolate the issue.

Wind Tunnel

Trike masts.

Wind Tunnel

Certain situations and configurations just call out for a ducted-fan installation. Barnaby Wainfan explains the benefits and drawbacks.

Stressing Structure

Cable-operated aileron control system.

Wind Tunnel

Builders are often in a rush to prove the airworthiness of their homebuilt projects, but thorough flight-testing is essential.