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kGW, KGW
kGW, KGW Thousands of pounds gross weight (highly
ambiguous).
KH Key Hole series of covert spy satellites (CIA/
USAF).
Kh Western rendition of Russian X, one use of which is
to designate ASMs.
k h , K h Factor for effect of forward speed on suckdown
(jet lift).
KhAI Kharkov Aviation Institute (USSR, Ukraine).
Kharif Severe dust storm (Somalia).
Khe Sanh Extremely steep approach and departure
(colloq., noun or verb).
KHTT Know-how transfer and training.
kHz Kilohertz, thousands of cycles per second.
Ki Kitai (airframe type) number (J Army 1932-45).
k i Radius of gyration.
KIA Killed in action.
KIAS Knots indicated airspeed.
Kic
Fracture toughness.
kick Final impulse given by small upper-stage motor to
space payload to achieve exact trajectory. Hence * motor,
* stage, apogee * motor.
kickback Bribe offered in large-scale contracting.
kicker Direction needle [SBA, ILS, colloq.].
kick-off drift In autolanding, separate control signal
inserted before touchdown to yaw aircraft parallel to
runway (but too late for crosswind to move aircraft laterally
from centreline).
KIFA Killed in flying accident.
KIFIS, Kifis Instantaneous vertical speed indicator.
Ki-Gas Piston-engine hand-priming system drawing
fuel from main tanks.
Kilfrost British liquid and paste deicer materials
including propylene and other glycols.
kill 1 Confirmed victory in air combat.
2 Destruction of missile or RV in flight.
kill box Predesignated volume of sky, usually rectilinear,
in which air or ground targets are sought.
kill chain Process linking discovery of target by sensor
to lock-on by shooter, also called S2S and TCT.
kill/loss ratio Actual or claimed ratio of kills confirmed
to losses suffered by a particular unit in a specified period;
see kill ratio.
kill probability Mathematical likelihood, based on experience,
that a particular missile or attack will destroy its
target.
kill ratio 1 For a particular type of aircraft, total of its
air victories divided by its own losses in air combat.
2 Confirmed victories divided by number of hostile
AAMs or SAMs launched.
kilo Prefix, multiplied by 1,000; symbol k. Confusingly,
often loosely used to mean kilogramme[s] or even kilometre[s].
kilobyte Not 1,000 but 1,024 bytes, abb. kb.
kilocalorie Non-SI unit of energy, often defined as
1/860 kWh, but see calorie.
kilocycle Measure of frequency, = 1,000 Hz.
kilogramme SI unit of mass, = 1,000 grammes, in US
kilogram, abb. kg, = 2.20462 lb. See IPK.
kilogramme-metre Unit of work in the gravitational
system, = 9.80665 Nm or 98,066,500 ergs.
kilohertz SI unit of frequency, = 1,000 Hz, abb. kHz.
kilojoule Si unit of energy, = 0.94786 Btu.
kilometre In US often kilometer, unit of length
kiss landing
= 1,000 m, 0.6214 statute mile, 0.5399568 Int. n.m.,
0.5396129 UK n.m.
kilometric Having a wavelength in the order of kilometre[s].
kilonewton SI unit of force or thrust, abb. kN,
= 224.80455 lb st.
kilopond Kilogramme force, falling into disuse.
kiloton Measure of NW explosive power, = that of 1,000
short tons of TNT (incorrectly, tonnes or long tons).
kilovolt Measure of electric potential, = 1,000 V, abb.
kV.
kilovolt-ampere Measure of power of a.c. electrical
machines, abb. kVA, numerically usually loosely = kW.
kilowatt SI unit of power, abb. kW = 1,000 W, = 1.341
hp.
kilowatt-hour Non-SI unit of electrical energy, kWh
= 3.6 MJ.
kiloword Unit of memory storage holding 1,024 words.
kinematic coupling The rapid conversion in roll of high
α [AOA] to sideslip.
kinematic ranging Aiming ahead of target correct lead
angle to allow for target relative motion.
kinematic viscosity Fluid viscosity divided by density,
µ /ρ , symbol v. unit m 2 s -1 (no name) = 10 4 Stokes
= 10.7643 ft 2 s -1 .
kinetheodolite Tracking and recording instrument
comprising high-speed camera whose frames bear az/el
measures.
kinetic energy That due to motion: for linear motion
E=½mV 2 ; for rotary E=½Iω 2 where I is moment of inertia
and ω is angular velocity. Unit = joule. Note: symbols T
and W are also used.
kinetic heating Heating of boundary layer and surface
beneath due to passage of body through gas, closely
proportional to square of airspeed or Mach. For practical
purposes synonymous with aerodynamic heating.
kinetic kill Space interception technique using weapon
whose kinetic energy alone provides its direct-impact
destructive effect.
kinetic pressure See dynamic pressure.
kinetic valve Gas-turbine fuel-system valve in which two
jets, one pump delivery pressure, the other pump servo
pressure, point directly at each other with a variable interrupter
blade where they meet.
kinetic weapons All forms of projectile including bombs.
kingpost One or more strong vertical struts above (and
sometimes below) aircraft centreline providing attachment
for primary flying and landing wires or struts, rare
post-1916.
kink point Any sharp corners on a graphical plot, e.g. of
payload/range.
kip Kilopound, 1,000 lbf (half a short ton), =
4,448.221615N. Not to be confused with kilopond.
kipper kite Aircraft of Coastal Command [colloq.
1939–45] (RAF).
Kips Confusingly, in view of above, thousands of
impulses, or instructions, per second.
KIR, Kir Kinematic infra-red (flare).
Kirksite Zinc alloy used for large airframe dies.
Kirkwood gaps Gaps in the asteroid belts.
Kiruna Swedish space launch and communications
stations.
KIS Kick-in step.
kiss landing Touch at near-zero rate of descent.
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