Aerospace Global Terminology

 

Aerodynamics (n), branch of fluid mechanics which studies the characteristics of airflow around a body with a certain shape in order to examine pressure distributions on the body’s surface and predict the forces and moments exerted by the air to the body.

Aerodynamic Efficiency (n), ratio between lift coefficient and drag coefficient which is often used as the aerodynamic quality parameter of a certain shape, body, or aircraft.

Aerofoil (n), see Airfoil.

Aileron (n), control surface located at the aft section of lifting surface (usually at wing) that is used to control airplane’s roll movement.

Aircraft (n), a type of flight vehicles that operates inside Earth’s atmosphere to perform a certain purpose.

Airfoil (n), wing’s or lifting surface’s cross section.

Angle of Attack (n), angle measured between the x-axis of body coordinate system with the x-axis of wind coordinate system.

AoA (acr), see Angle of Attack.

Ascend (n), see Climb.

Boundary Layer (n), region near surface of a body inside a fluid flow (up to a certain distance) where air velocity varies with the distance from surface and viscosity effect is dominant.

Canard (n), part of airplane (usually attached in the fore section of fuselage, in front of the wing) which is all-movable and used to control, trim, and stabilize flight vehicle in longitudinal mode.

CCC (acr), see Close Coupled Canard.

Cd (sym), airfoil’s drag coefficient.

CD (sym), Lifting surface’s / aircraft’s drag coefficient.

Center of Gravity (n), a point of location of an object where all of the object’s mass can be considered to be applied on.

CFD (acr), see Computational Fluid Dynamics.

CG (acr), see Center of Gravity.

Cl (sym), Airfoil’s lift coefficient.

CL (sym), Lifting surface’s / aircraft’s lift coefficient.

Climb (n), flight phase where a flight vehicle flies up and increase its altitude to reach its cruise altitude or mission altitude.

Close Coupled Canard, canard that placed close to the wing in order to improve wing’s lift generation by providing high-speed vortex into wing’s upper surface (usually used in airplane with delta wing configuration).

Cm (sym), Airfoil’s pitching moment coefficient.

CM (sym), Lifting surface’s / aircraft’s pitching moment coefficient.

Computational Fluid Dynamics (n),

Control Surface (n), movable part of lifting surfaces (such as aileron, elevator, and rudder) that is used to control airplane’s movement.

Cruise (n), flight phase where a flight vehicle maintain its altitude and attitude and flies straight to its destination.

Descent (n), flight phase where a flight vehicle flies down and decrease its altitude to reach the mission altitude or approach altitude.

Design Requirement and Objectives (n), a certain regulation, specification, and performance that an aircraft design must comply to.

DR&O (acr), see Design Objectives and Requirements.

Drag (n), aerodynamic force acting paralel to wind’s direction on a body inside a fluid flow.

DRO (acr), see Design Requirements and Objectives.

Elevator (n), control surface located at the aft section of lifting surface (usually at horizontal stabilizer) that is used to control airplane’s pitching movement.

Elevon (n), control surface located at the aft section of lifting surface (usually at wing) that is used to control airplane’s pitching and roll movement (acts as both aileron and elevator).

Empenage (n), tail unit; rear part of airplane that includes horizontal and vertical stabilizer.

Endurance (n), performance parameter that states how long a flight vehicle can perform its flight (keeping itself airborne).

Flap (n), high lift device located at the aft section of wing that is used to increase wing’s lift generation by increasing wing’s chamber.

Flapperon (n), plain flap that is also used as aileron (acts as both flap and aileron).

Fluid (n), a type of material substance that cannot withstand shear stress applied on it (deforms with a certain rate of deformation under applied shear stress).

Fuselage (n), part of flight vehicle where all other parts of flight vehicle is attached to.

HLD (n), see High Lift Device.

High Lift Device (n), device on wing (such as flap and slat) which is used to alter wing’s shape during a certain flight phases in order to increase its lift.

Horizontal Stabilizer (n), part of airplane (usually attached in the aft section of fuselage) that is used to generate aerodynamic force to control, trim, and stabilize the airplane in longitudinal mode.

Landing (n), flight phase where a flight vehicle is decelerated from approach position and grounds until it stopped moving. Landing is usually consist of approach phase, flare phase, touch down, and ground run phase.

Lift (n), aerodynamic force acting perpendicular (direction up) to wind’s direction on a body inside a fluid flow.

Lifting Surface (n), part of airplane that produces lift (such as wing, vertical stabilizer, horizontal stabilizer, canard, etc).

Mach Number (n), flow parameter that implies the ratio between airspeed and the speed of sound and usually used to determine the influence of compressibility effect (whether a flow can be assumed incompressible or compressible).

Pitch (v), rotates around the y-axis of body coordinate system.

Range (n), performance parameter that states how far a flight vehicle can travel during its cruise flight.

Reynolds Number (n), flow parameter that implies the ratio between inerta forces with viscous forces and used to determine the influence of viscous effect (whether a flow can be assumed inviscid or viscous).

Roll (v), rotates around the x-axis of body coordinate system.

Rudder (n), control surface located at the aft section of lifting surface (usually ay wing) that is used to control airplane’s yaw movement.

Slat (n), high lift device located at the fore section of wing that is used to delay wing’s stall by increasing wing’s chord length.

Stall (adj), losing aerodynamic lift because of flow separation that occurs on airfoil or lifting surface because of high angle of attack or insufficient airspeed.

Stepen (n), the author of this blog.

Take-Off (n), flight phase where flight vehicle is accelerated from its standing still position on ground and begin to fly up to an obstacle height. A take-off is usually consist of ground run phase, rotation phase, lift off, and airborne phase.

Vertical Stabilizer (n), part of airplane (usually attached in the aft section of fuselage) that is used to generate aerodynamic force to control, trim, and stabilize the airplane in lateral-directional mode.

Wing (n), part of airplane (usually attached in the middle section of fuselage) that is used to generate aerodynamic force to lift the airplane.

Yaw (v), rotates around the z-axis of body coordinate system.

One Response to Aerospace Global Terminology

  1. dithoap says:

    bagus pen.. informatif dan tampilannya keren…
    tapi klo boleh saran, judulnya menurut gw lebih cocok “Aerospace General Terminology”

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