ISO/IEC TR 22560:2017 情報技術—センサーネットワーク—航空業界のユースケース：アクティブエアフローコントロール | ページ 6

3.1

active air-flow control

AFC

ability to manipulate a flow field to improve efficiency or performance adding energy to the flow by an actuator and using a sensor or sensors to adjust, optimize, and turn on/off the actuation policy

3.2

ARINC 664

A664

standard that defines the electrical and protocol specifications (IEEE 802.3 and ARINC 664, 7) for the exchange of data between avionics subsystems [1] ¹

3.3

boundary layer

BL

region in the immediate vicinity of a bounding surface in which the velocity of a flowing fluid increases rapidly from zero and approaches the velocity of the main stream [2]

3.4

boundary layer separation

detachment of a boundary layer from the surface into a broader wake [3], [4]

3.5

bubble

higher level abstraction of a heterogeneous wireless sensor network with different underlying technologies that enables semantic interoperability between them and with the external world using standardized interfaces and flexible middleware application program interfaces

3.6

computational fluid dynamics

CFD

art of using a computer to predict how gases and liquids flow [5]

3.7

drag

force acting opposite to the relative motion of any object moving with respect to a surrounding fluid [29]

3.8

fly-by-wireless

paradigm where avionics subsystems usually controlled or linked by means of cables will use now a wireless connection

3.9

fuselage

aircraft's main body section that holds crew and passengers or cargo [6]

3.10

laminar flow

flow regime that typically occurs at the lower velocities where the particles of fluid move entirely in straight lines even though the velocity with which the particles move along one line is not necessarily the same as along another line [7]

3.11

patch

array of sensors and actuators wired together with a central or distributed control scheme

3.12

Reynolds number

number that characterizes the relative importance of inertial and viscous forces in a flow

Note 1 to entry: It is important in determining the state of the flow, whether it is laminar or turbulent [7].

3.13

shear force

force acting on a substance in a direction perpendicular to the extension of the substance, acting in a direction to a planar cross section of a body [8]

3.14

skin friction drag

effect that arises from the friction of the fluid against the"skin" of the object that is moving through it [30]

3.15

synthetic jet actuator

type of actuator whose main effect is produced by the interactions of a train of vortices that are typically formed by alternating momentary ejection and suction of fluid across an orifice such that the net mass flux is zero [8]

3.16

turbulence

type of flow where the paths of individual particles of fluid are no longer everywhere straight (as in laminar flow) but are sinuous, intertwining and crossing one another in a disorderly manner so that a thorough mixing of fluid takes place [2]

3.17

viscosity

resistance of a fluid to a change in shape, or to the movement of neighbouring portions relative to one another [9]

3.18

wireless avionics intra-communications

type of wireless communications within an aircraft [10]