Dynamic stability
Tags: FAA Pilot's Handbook
Dynamic stability. The property of an aircraft that causes it, when disturbed from straight-and-level flight, to develop forces or moments that restore the original condition of straight and level.
Dynamic rollover
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Dynamic pressure
As air has mass (from the molecules) and air in motion has dynamic (kinetic) energy which is converted to pressure the moment a body tries to slow it down or stop it. This is called dynamic pressure.
aerodynamic resistance and the use of aerodynamic coefficients
A streamlined shape has much less drag than a non-streamlined shape.
It is preferable to have automatic recording apparatus for these dynamic mode experiments due to possible difficulties of manual measurements. However, at present it is not possible to do so and the manual measurements are the only available option.
Dynamic Lift. The lift from the envelope of a balloon or airship or the fuselage of an aeroplane caused by its passage through the air.
Dynamic pressure.
Total pressure
Earth coordinates.
Coordinates referenced to the earth; See Also: east-north-up; Compare: body coordinates, stability coordinates ...
Aerodynamic Understanding
A depressing number of pilots have only the vaguest understanding about what affects an airplane's aerodynamics and how that effects the airplane in different situations. Most can mumble something about "...
Aerodynamic Acceptance Test
Laboratory test that establish if deicing and anti-icing fluids meet flow off requirements during takeoff ground acceleration and climb.
Aeronautical Information Manual (AIM) ...
Dynamically stable airplanes-i.e., those that return to straight-and-level flight automatically-are ideal for training purposes.
The MC's phugoids damp out after a couple gentle upsy-downsies-very nice indeed.
Dynamic microphones form a middle ground in terms of cost and sophistication. In these microphones, a coil of wire is connected to the diaphragm, which is in a strong magnetic field.
Dynamic vs. Static fuel systems: EFI efficiency for carburetors.
CARBURETORS STILL RULE in many forms of racing and on many cruising machines.
DYNAMIC- Continuous review, evaluation, and change to meet demands.
DYNAMIC RESTRICTIONS- Those restrictions imposed by the local facility on an "as needed" basis to manage unpredictable fluctuations in traffic demands.
A dynamical system can exhibit negative amounts of damping, but this is harder to demonstrate with a simple system.
AERODYNAMIC COEFFICENTS
means non-dimensional coefficients for aerodynamic forces and moments
AES
Aircraft Earth station ...
An aerodynamic control which can be extended to increase drag and slow down an aircraft. Often used on model aircraft to control/increase descent rates.
The total aerodynamic force, sometimes called the resultant force, may be divided into two components called lift and drag. Lift acts on the airfoil in a direction perpendicular to the relative wind.
Thrust (aerodynamic force). The forward aerodynamic force produced by a propeller, fan, or turbojet engine as it forces a mass of air to the rear, behind the aircraft.
should be close to the main wings' Aerodynamic Centre AC.
For wings with other than rectangular form (such as triangular, trapezoidal,
compound, etc.) we have to find the Mean Aerodynamic Chord MAC, which
is the average for the whole wing.
SPIN An aerodynamic condition in which the wings have lost lift and the aircraft follows a descending corkscrew flight pattern in autorotation.
Stall An aerodynamic condition in which the airflow over the upper surface of the wing is disrupted by excessive angle of attack, sharply reducing the amount of lift produced.
Stall turn (or Hammerhead) ...
Stall - An aerodynamic condition that has nothing to do with engine operation. It occurs when lift-producing airflow over the wings is disrupted or lost because the angle of the wings to the airflow (angle of attack) is too high.
BLOWN FLAPS - Aerodynamic surface over which bleed air is discharged at high speed to prevent breakaway of the normal airflow.
BOUNDARY LAYER - Thin stratum of air nearest to an aircraft's external surface structure.
RAMJET - An aerodynamic duct in which fuel is burned to produce a high-velocity propulsive jet. It needs to be accelerated to high speed before it can become operative.
RING COWLING - A circular engine FAIRING.
You can display either the temperature, pressure, density, speed of sound, dynamic pressure, force ratio, Mach number, or total temperature on your aircraft in the output box.
The up elevator position decreases the camber of the elevator and creates a downward aerodynamic force, which is greater than the normal tail down force that exists in straight-and-level flight.
The total aerodynamic force in this region is inclined slightly behind the rotating axis. This results in a drag force which tends to slow the rotation fo the blade.
There are two things to say in favor of the monoplane: first, that the passengers have an unobstructed view forward and range of gunfire upward because there is no wing above them; second, the aerodynamic efficiency of the monoplane is superior to ...
Winglets, those vertical fins at the ends of the wings, make airplane wings more aerodynamic, cut fuel consumption between 3 and 5 percent, saving more than 100,000 gallons of fuel per aircraft per year while reducing noise and emissions.
He was the first to identify the four aerodynamic forces of flight weight, lift, drag, and thrust and their relationship. He was also the first to build a successful human-carrying glider.
Early investigations into the theory of fluid dynamics have predicted a certain number of constants to which similar disturbances (and an airfoil in the air is a disturbance) produce similar effects - in hydrodynamics, ...
AIRPORT ARRIVAL RATE (AAR) - A dynamic input parameter specifying the number of arriving aircraft which an airport or airspace can accept from the ARTCC per hour.
This was done primarily to properly position the center of lift relative to the centre of mass and not for the aerodynamic benefit of increasing the critical Mach number of the wing.
LTE: Loss of Tail Rotor Effectiveness in helicopters. A low speed aerodynamic characteristic that can result in an uncommanded rapid yaw rate that does not subside of its own accord. Also known as 'unanticipated yaw' or 'loss of tail rotor authority'.
Typically, more dihedral causes more aerodynamic stability in an airplane, and causes the rudder to control both the roll and yaw axis. This is why some trainers and sailplanes require only 3 channels of radio control-i.e., having no ailerons.
SLATS Small, aerodynamic surfaces on the leading edge of the wings of fixed aircraft which, when deployed, allow the wing to operate at a higher angle of attack.
A navigation sensor based on atmospheric data sensors; usually measures static pressure, dynamic pressure, and outside air temperature; sometimes computes other atmospheric data, such as indicated airspeed, Mach number, calibrated airspeed, ...
With form following function, my two STOL aircraft designs have an inherent beauty that is more than skin deep once one understands the aerodynamic and construction features that have gone into these designs, ...
An engine-driven fixed-wing aircraft heavier than air that is supported in flight by the dynamic reaction of the air against its wings.
Air traffic incident report ...
I, had several technical features of the earlier racing seaplane. It had the same structure and aerodynamic lines. However, it had a new engine, the 1,030 hp Rolls Royce Merlin II and carried 8 machine-guns.
Sand loading of the Fokker F5 (the Dr.I prototype) had shown that the triplane cantilever wing cellule had excellent strength for its period; and it fell to those interested to create new (and unlikely) aerodynamic phenomena to account for the fatal ...
load factor
The ratio of a specified load to the total weight of the aircraft. The specified load is expressed in terms of any of the following: aerodynamic forces, inertia forces, or ground or water reactions ...
A fan-like disk, or several disks, at the front end of a jet engine that draws air into the engine and compresses the air. The compressed air is then passed into a combustion chamber where it is mixed with fuel and burned, producing thermodynamic ...
 See also: Aircraft, Flight, Power, Speed, Plane
  
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