1Dk4eXg

K
K 1 Kelvin, used without degree symbol.
2 Telemetry, computing (JETDS).
3 Prefix (non-SI or metric) = 1,000, thus K-bit or K-
byte, 32K, K-lb or Kp (kilopounds).
4 Factor of wing planform efficiency, or gain.
5 Tanker (UK and US aircraft category, US being a
role prefix).
6 Airfield subgrade 300 lb/cu ft, ie dense concrete.
7 See Knudsen number.
8 Various ratios, eg surface area of solid grain to
nozzle throat; or ratio of propeller pitch to diameter at
any chosen radius.
9 Circulation round aerofoil.
10 Potassium.
11 Km/h (flight plan).
12 Thermocouple of chrome/alumel type.
13 Invitation to transmit.
14 Knots (deprecated).
15 Smoke, obstruction to vision.
16 Bulk modulus.
17 Vehicle record category: spacecraft (FAI).
18 Diagonal tension factor in web-stiffened sheet; from
this is derived the shear-buckling constant √K s .
19 Helicopter rotor reduced frequency c/2V.
k 1 Prefix kilo ( 1,000).
2 Cathode.
3 Cold (air mass), or colder than surface.
4 Boltzmann constant.
5 Radius of gyration.
6 Various time-constants, identified by suffix.
7 Thermal conductivity [also λ].
8 Location of point load on beam as fraction of l.
9 Direction of propagation of radiation.
K-band EM radiation, 15-75 mm, 20-40 GHz.
k-bit 1,000 bits.
K-chart List of multipliers for calculating setback for
bends other than 90° in metal or other elastic sheet.
K-dinghy For one man (RAF, WW2).
K-display Horizontal timebase shows two blips from
target which vary in height if aerial azimuth direction is
incorrect.
K-index, K-number Combined measure of moisture
content and lapse rate over a range of pressure altitudes.
K-ration Standard field rations (USA, WW2, Korea).
K-loader Standard US military cargo aircraft loader
elevating to side-door sill.
K-site Dummy airfield (UK, WW2).
K-wing Usually combination of canard plus slender
delta.
K-words Kilo-words.
KA Message prefix (Morse).
KAB Guided bomb (R).
KADS, Kads Knowledge acquisition data system.
KAF Kenya Air Force.
Kagohl Heavy-bomber unit (G, WW1).
KAI Kazan Aviation Institute (USSR, R).
Kai Kaizo (modification) suffix (J Army 1932-45).
Kaizen Meetings at which all concerned plan and then
implement work flow [clean manufacturing].
Kalman filter Powerful software routine for combining
multiple inputs (eg INS output and Doppler radar) to give
most accurate single answer.
Kampf Battle, hence * geschwader = battle group [US
wing] = bomber group; * Zerstörer = battle destroyer =
heavy fighter (G).
Kamsin Hot, dry, southerly wind [Egypt and SE
Mediterranean].
kanat Underground aqueduct with surface breather
tubes (NATO).
Kan-ban Use of coloured balls, cards or similar symbols
to identify exact location of production-line hold-up (J).
Kapitän Commander of a Staffel (G).
Kapse Kernel APSE (software).
Kapton Polyimide materials, esp. age-resistant plastic
sheet used as substrate for solar arrays or with gold
coating as thermal insulation for spacecraft (DuPont).
Kapustin Yar Soviet ICBM/space ‘cosmodrome’ on flat
territory near Caspian.
karabiner Steel D-ring on harness for clipping to ‘dog
lead’ to prevent photographer, despatcher or other
aviator from falling out of aircraft.
KARI [South] Korea Aerospace Research Institute
[1989–].
Karldap Administration centre for Karlsruhe ATC
area.
Kármán-Moore Classic (1932) theory for aerodynamics
of slender body of revolution travelling nose-first in
supersonic gas flow.
Kármán street Endless succession of vortices, alternate
left/right and clockwise/counterclockwise rotation,
behind vibrating wire or strut in airflow.
Kármán-Tsien Classic (1939 and 1941) theory for
compressibility effects on aerofoils, especially variation of
Cp with M; most useful form is
Cpo
Cp M = –———————————––––––––
(1 M 2 ) ½ + ½Cpo(1 [1 M 2 ] ½ )
KAS Killed on active service.
KASA Kenya Air Sports Association.
katabatic wind Cold air flowing down mountain slope at
night (keeps airfield on slope fog-free).
Katie Killer alert threat identification and evasion.
Kaus SE/E winds in Persian Gulf heralding winter
depression.
KAZ Air-refuelling unit (R).
KB 1 Construction (design) bureau (USSR).
2 Kite balloon (WW1).
K b Wing vortex span factor, distance between wingtip
vortices divided by the span.
kb Kilobyte[s].
KBAC Royal Belgian aero club [Flemish language].
KBAS Design bureau for automatic systems (R).
K β Rolling-moment coefficient of horizontal tail.
KBF Kalman-Bucy filter.
kbit 10 3 bits.
KBO 1 Weapon-system officer (G).
2 Kuiper-belt objects.
kb/s, KBPS Kilobytes per second.
KBS Knowledge-based systems.
366