본문 바로가기
반응형

PHAK26

PHAK Chapter 7-4 Propeller Propeller The propeller is a rotating airfoil, subject to induced drag, stalls, and other aerodynamic principles that apply to any airfoil. It provides the necessary thrust to pull, or in some cases push, the aircraft through the air. The engine power is used to rotate the propeller, which in turn generates thrust very similar to the manner in which a wing produces lift. The amount of thrust pro.. 2022. 5. 24.
PHAK Chapter 7-3 Reciprocating Engine Chapter 7 Aircraft Systems Reciprocating Engines (Continued) Even when the engine is operated at a fairly low speed, the four-stroke cycle takes place several hundred times each minute. In a four-cylinder engine, each cylinder operates on a different stroke. Continuous rotation of a crankshaft is maintained by the precise timing of the power strokes in each cylinder. Continuous operation of the .. 2022. 5. 14.
PHAK Chapter 7-2 Reciprocating Engines Chapter 7 Aircraft Systems Reciprocating Engines (Continued) Depending on the engine manufacturer, all of these arrangements can be designed to utilize spark or compression ignition and operate on either a two- or four-stroke cycle. In a two-stroke engine, the conversion of chemical energy into mechanical energy occurs over a two-stroke operating cycle. The intake, compression, power, and exhaus.. 2022. 5. 13.
PHAK Chapter 7-1 Reciprocating Engines Chapter 7 Aircraft Systems Introduction This chapter covers the primary systems found on most aircraft. These include the engine, propeller, induction, ignition, as well as the fuel, lubrication, cooling, electrical, landing gear, and environmental control systems. Powerplant An aircraft engine, or powerplant, produces thrust to propel an aircraft. Reciprocating engines and turboprop engines wor.. 2022. 5. 12.
PHAK Chapter 6-22 Autopilot Autopilot Autopilot is an automatic flight control system that keeps an aircraft in level flight or on a set course. It can be directed by the pilot, or it may be coupled to a radio navigation signal. Autopilot reduces the physical and mental demands on a pilot and increases safety. The common features available on an autopilot are altitude and heading hold. The simplest systems use gyroscopic a.. 2021. 8. 22.
PHAK Chapter 6-21 Antiservo Tabs Antiservo Tabs Antiservo tabs work in the same manner as balance tabs except, instead of moving in the opposite direction, they move in the same direction as the trailing edge of the stabilator. In addition to decreasing the sensitivity of the stabilator, an antiservo tab also functions as a trim device to relieve control pressure and maintain the stabilator in the desired position. The fixed en.. 2021. 8. 21.
PHAK Chapter 6-20 Balance Tabs Balance Tabs The control forces may be excessively high in some aircraft, and, in order to decrease them, the manufacturer may use balance tabs. They look like trim tabs and are hinged in approximately the same places as trim tabs. The essential difference between the two is that the balancing tab is coupled to the control surface rod so that when the primary control surface is moved in any dire.. 2021. 8. 20.
PHAK Chapter 6-19 Trim Tabs Trim Tabs The most common installation on small aircraft is a single trim tab attached to the trailing edge of the elevator. Most trim tabs are manually operated by a small, vertically mounted control wheel. However, a trim crank may be found in some aircraft. The flight deck control includes a trim tab position indicator. Placing the trim control in the full nose-down position moves the trim ta.. 2021. 8. 19.
PHAK Chapter 6-18 Spoilers Spoilers Found on some fixed-wing aircraft, high drag devices called spoilers are deployed from the wings to spoil the smooth airflow, reducing lift and increasing drag. On gliders, spoilers are most often used to control rate of descent for accurate landings. On other aircraft, spoilers are often used for roll control, an advantage of which is the elimination of adverse yaw. To turn right, for .. 2021. 8. 18.
반응형

티스토리툴바