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NSO
NSO Navigation/systems operator.
NSOC Naval Satellite Operations Center (Pt Mugu,
CA).
NSP 1 Normal sea-level power.
2 Night surveillance payload.
3 National Simulator Program; O adds Office (FAA).
NSPE National Society of Professional Engineers (US).
NSPOL Non-scheduled policy (ECAC).
NSR 1 No scheduled removal.
2 Naval [or NATO] Staff Requirement.
NSRI National Soil Resources Institute (U. of
Cranfield).
NSRL National Space Radiation Laboratory (BNL).
NSRP National Search and Rescue Plan (US).
NSS 1 National seismic station (US).
2 Near-source simulation.
3 Navigaton subsystem.
4 National Security Space (US).
5 National Space Society (US).
NSSA 1 National Safe Skies Alliance (US).
2 National Space Society of Australia [office, Sydney].
NSSC Naval Ship Systems Command (USN).
NSSFC National Severe Storms Forecast Center
(Kansas City).
NSSI 1 National Security Space Integration; O adds
Office (DoD).
2 National Security Space Institute [Petersen AFB, CO,
18 October 2004–] (US).
NSSL National Severe Storms Laboratory [Oklahoma]
(US).
NSSO National Security Space Office [White House]
(US).
NSSS Naval Space Surveillance System [1959–2004]
(USN).
NST 1 NATO Staff Target.
2 Noise, spikes and transients.
NSTAC National Security Telecommunications
Advisory Council [White House] (US).
NSTAP National strategic technology acquisition plan
(UK).
NSTB National satellite testbed.
NSTD Non-standard.
NSTL 1 National Space Technology Laboratories
(NASA, previously MTF, now SSC (4)).
2 National security threat list (US).
NSTO Near single stage to orbit.
NSTP National space technology programme (DTI,
UK).
N-strut Interplane or other bracing system having
general shape of N.
NSVN NATO secure voice network.
NSW 1 Nominal specification weight.
2 No significant weather [TAF or Metar].
NSWC Naval Surface Warfare Center (USN).
NSWP Non-Soviet Warsaw Pact.
NT Non-traditional (ISR2).
nT Nanotesla; terrestrial field varies from c 25,000
(magnetic equator) to c 70,000 nT (poles), vertical component
usually being measured in geophysical prospecting
and ASW.
nt Nit (name not usually used).
NTAOCH Notice to AOC holders (CAA).
NTAP Notice to Airmen publication (USGPO).
NTAS Norad tactical Autovon system (USAF).
Nuac, NUAC
NTAT Near-term Acme technology.
NTB 1 National test bed (US, SDI).
2 Nuclear test ban; T adds Treaty.
NTC 1 National Training Center (US DoD).
2 Numerator time constant.
3 Notice.
NTD National Test Director (ISS).
NTDD Normalized total departure delay.
N/TDR Near-term data radio (USA).
NTDS Naval tactical data, or distribution, system.
NTE 1 Not to exceed.
2 Northerly turning error.
NTF 1 No trouble found.
2 NATO task force.
NTFWTC NATO Tactical Fighter and Weapons
Training Centre.
NTG Nachrichtentechnische Gesellschaft im VDE (G).
Nth country Next power to possess nuclear weapons
(DoD).
NTI Next [runway] turn indicator.
NTIA National Telecommunications and Information
Administration (US).
NTIS National Technical Information Service (US).
NTISR Non-traditional intelligence, surveillance and
reconnaissance; also written NTI STAR.
NTK Scientific and technical committee (many in
USSR, R).
NTM 1 National technical means, of verification of
MBFR and precise Earth mapping.
2 NDT manual.
3 NATO Tiger Meet.
NTMV National technical means of verification.
NTNF Royal Norwegian council for scientific and
industrial research.
NTO 1 Nitrogen tetroxide.
2 Notice to operators.
3 No technical objection[s].
4 Nitrotriazolone [explosive].
NTOS No time on station.
NTP Normal (ie standard) temperature and pressure.
NTPD NTP dry (gas bottle capacities).
NTPS National Test Pilot School [Mojave, CA] (US).
NTS 1 Negative-torque signal.
2 Navigation technology satellite (USN).
3 Night targeting system.
NTSB National Transportation Safety Board (US,
from 1966).
NTSC National Television Standards Commitee (US).
NTT Non-threat traffic.
NTTC National Technology Transfer Center (NASA).
NTU 1 State technical administration (USSR, R).
2 Navigation training unit.
3 New-threat upgrade.
4 Not taken up [civil registration].
NTW Navy theater-wide; /BMD adds ballistic-missile
defense (USN).
N 2 Speed of HP shaft.
N 2 O 4 Nitrogen tetroxide.
NTWS New threat-warning system.
NTZ No-transgression zone.
NU 1 Nose-up.
2 Not usable.
Nu Nusselt number.
Nuac, NUAC Nordic upper air, or area, control centre.
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