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QNM
throughout, answer is equivalent MSL pressure as calculated
by destination ATC. Regional *, or lowest-forecast
*, is value below which actual * is predicted not to fall in
given period and location; gives supposedly safe terrain
clearance.
QNM Quantized normal/MTI (video).
QNT Quiet networking technology.
QNY Code: “What is present weather at your location”
q o Freestream dynamic pressure.
QOC Quality officer in charge (UK).
QOI Qualified Observer Instructor (RN).
QOP Quality operating procedure[s].
QOR Qualitative operational requirement.
QoS Quality of service.
QOT&E Qualification operational test and evaluation.
QP Quartz-phenolic.
QPD Quality procedural document.
QPL Qualified products list.
qpp Quiescent push/pull.
QPR 1 Quality problem report.
2 Quality procedural requirement.
QPSK Quadrature, or quadrative, phase-shift, or pulseshift.
QR 1 Quiet radar.
2 Quadrantal receiver.
3 Quadrupole resonance.
q r Generalized co-ordinate.
QRA 1 Code: “What is name of your station”
2 Quick-reaction alert (RAF), originally with suffixes
(I) or (B) for interceptor or bomber.
3 Quiet reconnaissance airplane (USA).
QRB Quick-release buckle.
Q rb Generalized force of rth mode due to buffeting
pressure field.
QRC 1 Quick-reaction, or response, capability, or
[IRCM] contract.
2 Quick-release connector.
QRF 1 Quick-release fitting.
2 Quick-reaction force.
Q rf Generalized forcing function.
QRGA Quadrupole residual gas analyser, instrument
for measuring ultrahigh vacuum.
QRH Quick-reference handbook.
QRI Quick-reaction interceptor.
QRMC Quadrennial review of military compensation.
QRP Quick-reaction package.
QRS Quality requirements systems.
Q rs Generalized force in rth mode due to sth-mode aerodynamic
excitation.
QRT Code: “Shall I stop (or please stop) sending”
QRTOL Quiet RTOL.
QS Quick scan.
qs Quasi-steady.
QSEG Qualification systems-engineering group.
QSH Quiet short-haul.
QSJ Quiet supersonic jet.
QSP Quiet supersonic platform, research programme
by NASA, Darpa, Northrop Grumman.
QSR 1 Quick strike reconnaissance.
2 Quarterly service report.
QSRA Quiet short-haul research aircraft.
QSS Quality, safety and security.
quadricycle
QSST Quiet supersonic transport. In 2006 also used for
quiet small SST.
QSTNRY Quasi-stationary.
QSTOL Quiet STOL.
QSY Code: “Change radio frequency now to –”.
QT Quart, quarter.
Q T Shear flow in webs and corners of panel due to
torsion.
q T Thrust-specific rate of fuel consumption.
QT&E Qualification test and evaluation.
QTDN Qualified tanker [or, to tank] day or night.
QTE 1 Code: “What is my true bearing from you”;
today often changed to “line of position” = PL.
2 Qualification test and evaluation.
Q-tech Quality technology.
QTF 1 Code: “Will you give me position of my station
according to bearings taken by D/F stations you control”
(Note: many countries, including UK, can no longer
provide D/F fix.)
2 Quarter-turn fastener.
Q-tip Propeller with sweptback tips.
QTM Quality technical memorandum.
QTOL Quiet takeoff and landing.
QTR 1 Quiet tail rotor.
2 Quality technical requirement.
3 Quad tilt-rotor.
qts Dynamic pressure in wind-tunnel test section.
QTY Quantity.
quad 1 Group of four attitude-control thrusters indexed
at 000°/090°/180°/270° relative to vehicle major axis.
2 Quadrant (ICAO).
3 Loosely, any group of four, especially of air-launched
missiles fired from one container or pylon.
quad actuator Among other things, central
summing/proportioning/switching unit between triply
redundant systems to ensure that maximum redundancy
and maximum authority are preserved.
quaded cable Telecom cable with two twisted pairs (four
channels).
quadjet Aircraft powered by four jet engines.
quadrant 1 Radio range area between equisignal zones
(actually much more than 90°).
2 Circular-arc operating lever on control surface of
airship or large, slow aeroplane (probably obs.).
3 Circular-arc mounting for throttle, pitch or other
operating levers in cockpit.
quadrantal cruising levels Quadrantal heights.
quadrantal error That caused by presence of metal structure
(eg receiving aircraft) distorting radio signal.
quadrantal heights Specified flight levels assigned to
traffic on heading in each of four 90° quadrants; intention
is that traffic on conflicting headings shall be separated in
height. See Quadrantal Rule.
quadrantal points Intercardinal headings: 045°, 135°,
225° and 315°.
Quadrantal Rule Quadrantal heights allocated in UK
uncontrolled airspace below FL250.
quadrature Quarter-phase difference between two wave
trains of same frequency, ie displacement of 90°.
quadrex Quadruply redundant.
quadricycle 1 Landing gear with four wheels or wheel
groups disposed at corners of rectangle in plan.
2 Loosely (suggest incorrectly) any aircraft with four
landing gears even if three are in line.
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