AV Web

JULY 23, 2024

The three-blade “Polaris” prop for the Diamond DA-40NG not only increases cruise speed by three knots, but cuts noise output to 74 dB – an important consideration for a trainer. The four-blade carbon-fiber scimitar prop decreases weight by 20 pounds (compared with a metal prop) and cuts takeoff distance by 25%.

Airfoil 52

Airfoil Knot Airline Airlines 52

Air Facts

JULY 22, 2024

irplane controls work per the Lever Principle, and a wing’s airfoil shape increases lift via the Bernouilli Principle and Coanda Effect. five hours at 150 knots vs. five weeks at 5 knots). The oldest is Archimedes’ Law. The Four Forces of Flight (Lift, Thrust, Drag & Gravity) obey Newton’s Three Laws of Motion.

Lift 80

Lift Airfoil Knot Airplanes 80

Flying Magazine

MAY 1, 2024

The majority of the lift generated by an unstalled airfoil is always concentrated near the front, and moving a trailing-edge flap up or down changes the flow conditions at the leading edge. The FW-190 rolled 151 deg/sec at 226 knots, the Spitfire 150 at 176, and the P-40 134 at 315.

Aileron 108

Aileron Airfoil Weight-Shift-Control Airplanes 108

Plane and Pilot

AUGUST 3, 2024

As North American discovered with the Sabreliner, Lear soon realized that the real expense in designing a new aircraft are the hours spent perfecting the airfoils, landing gear, and major systems. Thus, the search for a suitable design led to Switzerland and the orphaned P-16 lightweight fighter project.

Jet 52

Jet Airfoil Airplanes Ceiling 52