Did you ever wonder what those strange conglomerations of letters meant? Here's your chance to find out what those NASA acronyms stand for. About Space and Astronomy presents the Guide to NASA Acronyms. From Navigation and Guidance to Network Interface Data System - NASA Management Instruction to Nose to Z-Axis, you'll find them here. This page lists acronyms starting with N. For others, click on the appropriate letter above or below.

[N]

N: Neutrons
N: Newton
N: North
N&G: Navigation and Guidance (G&N preferred)
N/0: Normally Open
N/A: Not Applicable
N/A: Next Assembly
N/B: Narrow Band
N/C: Numerical Control
N/C: Normally Closed
N/C: Nose Cone
N/C: Not Critical
N/D: Need Date
N/P: Not Provided
N/W: Network
N02: Nitrogen Dioxide
N2: Nitrogen
N2: Nitrogen
N204: Nitrogen Tetroxide
N2H4: Hydrazine
N2HO4: Nitrogen Peroxide
N2O4: Nitrogen tetroxide
NA: Next Action
NA: Not Applicable
NAAL: North American Aerodynamic Laboratory (Wind Tunnel)
NAC: Nacelle
NAEC: Naval Air Engineering Center
NAM: National Association Of Manufacturers
NAP: Navigation Analysis Program
NAR: Numerical Analysis Research
NARS: National Archives and Record Services
NAS: National Aircraft Standard
NAS: National Academy of Sciences
NAS: Naval Air Station
NASA: National Aeronautics and Space Administration
NASA: National Aeronautics and Space Administration
NASCOM: NASA Communications (Network)
NASTRAN: NASA Structural Analysis
NATF: Naval Air Test Facility
NATL: National
NAV: "Navigate, Navigation"
NAVAID: Navigation Aid
NAVDAD: Navigationally Derived Air Data
NAVPOOL: Navigation Parameter Common Pool
NAVSAT: Navigation Satellite
NB: Navigation Base
NB: No-Bias (Relay)
NB: Nitrogen Base
NB: Narrow Band
NBF: Neutral Buoyancy Facility
NBS: National Bureau of Standards
NBT: Neutral Buoyancy Trainer
NC: Numerical Control
NC: No Comment
NC: Noise Criteria
NC: Normally Closed
NC: No Change
NC: National Course
NC: Normally closed
NC1: Nominal Correction 1 (Phasing Maneuver)
NCC: NASA Class Code
NCC: Nominal Corrective Combination (Maneuver)
NCC: Network Control Center (GSFC)
NCGS: Nuclear Criteria Group Secretary
NCI: Phasing Maneuver
NCIU: Network Common Interface Unit
NCR: No Calibration Required
NCR: Nonconformance/Failure Report
NCS: Nutation Control System
ND: NASA Document
NDE: Nondestructive Evaluation
NDI: Nondestructive Inspection
NDT: Nondestructive Test
NDTF: Nondestructive Test Facility
NDTL: Nondestructive Test Laboratory
NEA: Noise Equivalent Angle
NEC: National Electrical Code
NEG: Negative
NEP: Nominal entry point
NEP N: NEP Normal Entry Point
NESC N: NESC National Electrical Safety Code
NESR N: NESR Natural Environment Support Room
NET N: NET Network (N/W preferred)
NETCOM N: NETCOM Network Communications
NF N: NF Natural Flood
NFCS N: NFCS Nuclear Forces Communications Satellite
NFPA N: NFPA National Fire Protection Association
NFS N: NFS Nozzle Flow Sensor
NFSP N: NFSP Nonflight Switch Panel
NFW N: NFW Nonfuel Wasting
NG N: NG Narrow Gage
NGM N: NGM Nitrogen Generation Module
NGT: NASA Ground Terminal
NH N: NH Nominal Heig4t (Adjust Maneuver)
NH3: Ammonia
NH3 A: NH3 Ammonia
NH4 H: NH4 Hydrazine
NHA N: NHA Next Higher Assembly
NHB N: NHB NASA Handbook
NHC N: NHC National Hurricane Center
NI-SIL N: NI-SIL Nickel-Silver
NIA N: NIA NOVA Interface Adapter
NIB N: NIB Noninterference Basis
NIC N: NIC Not in Contract
NICD N: NICD Nickel Cadmium
NIDS N: NIDS Network Interface Data System
NIL N: NIL No Limit (NL preferred)
NIM N: NIM Nuclear Instrumentation Module
NIP N: NIP Network Input Processor
NJP N: NJP Network Job Processing
NL N: NL No Limit
NLA N: NLA Npxt Lower Assembly
NLG: Nose Landing Gear
NLG: Nose landing gear
NLT: Not Later Than
NLT: Not Less Than
NM: Nautical Miles
NM: Network Manager (GSFC)
NM: Nonmetallic
NMAB: National Materials Advisory Board
NMC: National Meteorological Center
NMI: NASA Management Instruction
NMI: Nautical Miles
NMO: Normal Manual Operation
NMR: Nuclear Magnetic Resonance
NMT: Notification of Master Tool
NMT: Not More Than
NMV: Nitrogen Manual Valve
NNI-I: NASA Standard Initiator-Type I (was SMSI)
NO: Nitric Oxide
NO: Normally Open
NO: Not for Off -KSC Distribution
NO: Normally open
NO.: Number
NOAA: National Oceanic and Atmospheric Administration
NOC: Notation of Content
NOC: Network Operation Control
NOC: Not Otherwise Coded
NOCC: Network Operations Control Center
NOCC: Network Operations Control Center (GSFC)
NOES: National Operational Environmental Satellite Serv.
NOM: Nominal
NOM: Network OutPut Multiplexer
NOR: Normal
NOR: "Northrup Flight Strip, NM (Deorb OPT site)"
NORAD: North American Air Defense Command
NORDSAT: Scandinavian Countries Broadcast Satellite
NORM: Normal
NOSL: Night/Day Optical Survey of Thunderstorm Lightning
NOSP: Network Operations Support Plan
NOSS: National Oceanic Survey Satellite
NOZ: Nozzle
NP: Neptunium
NPC: NASA Publication Control
NPD: NASA Policy Directive
NPDS: Nuclear Particle Detection Subsystem
NPL: Normal Power Level (see RPL)
NPN: NASA Part Number
NPRV: Nitrogen Pressure Relief Valve
NPS: NASA Planning Studies
NPSH: Net Positive Suction Head
NPSP: Net Positive Static Pressure
NPU: Nitrogen Purge Unit
NPV: Nitrogen Pressure Valve
NR: Noise Rating
NR/T: Near Real-Time
NRC: Nonrecurring Costs
NRCC: National Research Council of Canada
NRI: NonreCurring Investment
NRL: Naval Research Laboratory
NRM: Nonrecurring Maintenance
NRP: Normal Rated Power
NRS: Nonconformance Reporting System
NRT: Near Real-Time
NRTS: Not Repairable at This Station
NRZ: Non-Return-to-Zero
NRZ-L: Non-Return-to-Zero Level
NS: Nickel Steel
NSA: National Standards Association
NSD: NASA standard detonator
NSGT: NASA Ground Terminal
NSI-I: NASA Standard Initiator-Type I (was SMSI)
NSN: National Stock Number
NSO: NASA Support Operation
NSP: NASA Support Plan
NSP: Network Signal Processor
NSP: Network signal processor
NSR: Nominal Slow Rate
NSR: Normal Slow Rate (Maneuver)
NSR: National Slow Rate
NSR1: First Coell;ptic Maneuver
NSR2: Second Coelliptic Maneuver
NSS: Nitrogen Supply Subsystem
NSSDC: National Space Science Data Center
NSTL: National Space Technology Laboratory (was MTF)
NSTL: National Space Technology Laboratories
NSW: NSP Status Word
NTIS: National Technical Information Service
NTO: Nitrogen Tetroxide
NTP: Network Test Panel
NTP: Normal Temperature and Pressure
NTP: Notice To Proceed
NTS: Not to Scale
NTS: Near Term Schedule
NTSO: NASA Test Support Office
NTTF: Network Test and Training Facility
NUL: Non-GSE Utilization List
NVAFB: North Vandenberg Air Force Base
NVB: Navigational Base
NVPOWG: NASA/VAFB Payload Operations Working Group
NVR: No Voltage Release
NVR: Nonvolatile Residue
NVR: Non-Verification Required
NW: Nose Wheel
NW: NASA Waiver
NWS: Nose-Wheel Steering
NWS: National Weather Service
NWS: Nose wheel steering
NWSA: Nose Wheel Steering Amplifier
NWSI: New World Services Inc.
NWT: Nonwatertight
NWW: Nose Wheel Well
NX: NOrmal to X-Axis
NY: Normal to Y-Axis
NZ: Normal Acceleration
NZB: Non Zero Binary
Nascom: NASA communications network
Nb: Niobium
Nd: Neodymium
Net Positiv: Net Positive Suction Pressure
Network Int: Network Interface Processor
Network Pro: Network Program
Ni N: Ni Nickel
Nitrogen G: Nitrogen Gage
Nitrogen P: Nitrogen Purge Control
Noise Figur: Noise Figure
Nominal Per: Nominal Percent Defective
Normal Load: Normal Load Factor (g)
Normal to Z: Normal to Z-Axis
Nose to X-A: Nose to X-Axis
Nose to Y-A: Nose to Y-Axis
Nose to Z-A: Nose to Z-Axis
Not Provide: Not Provided
Not Require: Not Required
Not Switcha: Not Switchable
Nuclear Shu: Nuclear Shuttle

For more NASA acronyms, select a letter below or at the top of the page to continue with the About Astronomy and Space Guide to NASA Acronyms.