This is a moderate-sized book about performance of relatively small propeller-driven aircraft. Still, a large subject. Our goal has been to clearly lay out for the reader the details, to show him at her how to answer such questions as

• If the airplane is cruising at 100 kn at 10.000 ft and the pilot decides 10 pull back the stick, slowing lo 80 kn, and banks 20 deg, how will the airplane then move? Will it go up? Down? With what rate of climb or descent? What are the details of flight path, engine speed, turn rate?

• The airplane can take off—level concrete, 3000 lb. no wind, at sea level—in 1000 ft. What then is its distance to lift oft"on mrf. sloped at 3 deg, when it weighs 2500Ibf, with a 10-kn headwind, at 50OO0? Would it be belter to take off down hill?

Answers to realistic, full-fledged performance questions. Practical questions to which pilots and students and operators need answers. Historically (or so it seems to this writer), aircraft performance treatises have not been able to provide easy and accurate answers to such a full range of performance queries. That we will be able to do so in these pages is primarily due to a single conceptual advance: the bootstrap approach.

The bootstrap approach is a parametric procedure based on the demonstrably close linearity of the propeller polar diagram. Full explication of the bootstrap approach, including its extensions to maneuvering flight, partial-throttle operations, and takeoff and landing, appears here for the first time, as does explanation of the general aviation general propeller chart which makes similar calculations practicable for constant-speed propeller airplanes.

Дж. Лоури Летные характеристики легкого самолета / J.Lowry Performance of Light Aircraft

1999