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P

PAN —  PCA —  PDP —  PFO —  PIG —  PKI —  PMC —  PO —  PPC —  PRL —  PT

ACRONYM	DEFINITION	CONTRIBUTOR
p	Proton	CASI
P	Pultrusion	CASI
P&CS	Planning and Control System	Goddard
P&S	Planning and Scheduling	Goddard
P.A.C.M.	Pulse Amplitude Code Modulation	CASI
P/AWS	Paging and Area Warning System	Goddard
P/C CLLS	Physical/Chemical Closed Loop Life Support	CASI
P/K	Printer/Keyboard	CASI
P/L	Payload	CASI
P/OF	Pinhole Occulter Facility	CASI
P/P	Power Propulsion	CASI
P/S	Power Supply	Goddard
P/SA	Pre-Amp/Splitter Assembly	Goddard
PA	Performance Appraisal (OHR)	Langley
PA	Performance Assurance	Goddard
PA	Power Amplifier	Goddard
PA	Privacy Act	Goddard
PA	Product Assurance	Goddard
PA	Picatinny Arsenal, Dover, NJ	CASI
PABSI	Profiling A-Band Spectrometer/Visible Imager	Goddard
PABX	Private Automated Branch Exchange	Goddard
PAC	Predict Application Control	Goddard
PAC	Primex Aerospace Corporation	Goddard
PACE	Particles, Atmosphere and Chemistry Experiment	Langley
PACE	Power Assisted Glove End Effector	CASI
PACE	Pre-College Awards for Excellence in Mathematics, Science, Engineering, and Technology	Goddard
PACE	Physics and Chemistry Experiment in Space	CASI
PACI	Payload/Attitude Control Interface	Goddard
PACOR	Packet Processor	Goddard
PACS	Pan American Climate Studies	Goddard
PAD	Program Approval Document (NASA) (KSC)	Langley
PAD	Project Authorization Document	Goddard
PAD	Pulse Amplitude Discriminator	Goddard
PAD	Polar Auroral Dynamics	CASI
PAD	Propellant Actuated Devices	CASI
PAD	Pulsed Activation Doppler	CASI
PAE	Performance Assurance Engineer	Goddard
PAE	Product Assurance Engineer	Goddard
PAET	Planetary Atmosphere Experiments Test	CASI
PAF	Payload Adaptor Fitting	Goddard
PAF	Payload Attach Fitting	Goddard
PAGEOS	Passive Geodetic Earth Orbiting Satellite	CASI
PAH	Polycyclic Aromatic Hydrocarbon	CASI
PAIP	Performance Assurance Implementation Plan	Goddard
PAL	Parts Accumulation List	Goddard
PAL	Programmable Array Logic	Goddard
PAL	Pallet (Spacelab Pallet Structure)	CASI
PALAPA	(Synchronous satellite communication system for Indonesia)	CASI
PAM	Payload Accommodation Manager	CASI
PAM	Payload Assist Module	CASI
PAM	Peripheral Adapter Module	CASI
PAM	Pulse Amplitude Modulation	CASI
PAMIS	Processing And Manufacturing In Space	CASI
PAMPL	Program Approved Materials and Processes Selection List	Goddard
PAMS	Passive Aerodynamic Magnetic Satellite	Goddard
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PAN	Peroxyacetyl Nitrates	Langley
PAN chemicals	(PeroxyAcetylNitratol)	CASI
PANT	Proboscoid Ablative Nose Tips (Program)	CASI
PAO	Program Analysis Office	Goddard
PAO	Public Affairs Office	Goddard
PAO	Public Affairs Officer	Goddard
PAP	Payload Attach Plate	Goddard
PAP	Performance Assurance Plan	Goddard
PAP	Performance Assurance Procedures	Goddard
PAP	Product Assurance Plan	Langley
PAPCPT	Provide Aerospace Products and Capabilities Process Team	Goddard
PAPL	Program Approved Parts List	Goddard
PAPL	Project Approved Parts List	Goddard
PAR	Performance Assurance Requirements	Goddard
PAR	Personnel Action Request	Goddard
PAR	Photosynthetically Active Radiation	Goddard
PAR	Problem Action Record	Goddard
PAR	Precision Approach Radar	CASI
PARC	Public Access Resource Center	Goddard
PARCA	Program for Arctic Regional Climate Assessment	Goddard
PARCS	Primary Atomic Reference Clock in Space	CASI
PARE	Physiological & Anatomical Rodent Experiment	CASI
PARESEV	Paraglider Research Vehicle 91, IA, II, etc.	CASI
PAS	Planning and Scheduling	Goddard
PAS-C	PDES Application Protocol Suite for Composites	Goddard
PASDE	Photogrametric Appendage Structural Dynamics Experiment	Goddard
PASO	Program and Specific Objectives	CASI
PASP	Publication of the Astronomical Society of the Pacific	Goddard
PASS	POCC Applications Software Support	Goddard
PASS	Primary Avionics Software System (Space Shuttle)	CASI
PASS	Pressurized Air Starter System	CASI
PASSOPS	POCC Applications Software Support Operations	Goddard
PAT	Process Action Team	CASI
PATGEN	Pattern Generation	Langley
PAVDO	Photo and Video Documentation Office	Goddard
PB	Pitney-Bowes, Inc.	Langley
PBAA	Polybutadiene Acrylic Acid (Copolymer)	CASI
PBAN	PBI Polybenzimidazole	CASI
PBAN	Polybutadiene Acrylonitrile (Copolymer)	CASI
PBC	Performance Based Contracting	Goddard
PBE	Pool Boiling Experiment	CASI
PBIO	Processor Backplane I/O	Goddard
PBL	Planetary Boundary Layer	CASI
PBMA	Process Based Mission Assurance	Glenn
PBRE	Pebble Bed Reactor Experiment	CASI
PBS	Power Bus Simulator	Goddard
PBS	Public Broadcasting System	Goddard
PBSC	Performance Based Service Contracting	Langley
PBW	Proportional Bandwidth	CASI
PBX	Polybutadiene Tetranitramine	CASI
PC	Personal Computer	Goddard
PC	Photo Conductive	Goddard
PC	Planetary Camera (part of WF/PC or WFPC2)	Goddard
PC	Power Controller	Goddard
PC	Printed Circuit	Goddard
PC	Pulse Command	Goddard
P-C	Performance-Cost	Goddard
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PCA	Physical Configuration Audit	Goddard
PCA	Printed Circuit Assembly	Goddard
PCA	Program Commitment Agreement	Goddard
PCA	Propellant Control Assembly	Goddard
PCA	Proportional Counter Array	Goddard
PCA	Polar Cap Absorption	CASI
PCA	Portland Cement Association	CASI
PCA	Positive Control Area	CASI
PCA	Power Control Assembly (Space Shuttle)	CASI
PCA	Prime Candidate Alloy	CASI
PCA	Propulsion Controlled Aircraft	CASI
PCAC	Partially Conserved AxialVector Current	CASI
PCAC	Partial Conserved Axial Currents	CASI
PCB	Parts Control Board	Goddard
PCB	Printed Circuit Board	Goddard
PCB	Program Control Board	Goddard
PCC	Program for Cooperative Cataloging	CASI
PCC	Project Cost Commitments	Goddard
PCD	Photon Counting Detector	Goddard
PCD	Program Commitment Document	Goddard
PCD	Project Commitment Document (SOMO)	Goddard
PCDBR	Data Collection Platform, Brazil (Platformas de Coleta de Dados)	CASI
PCDS	Power Converter and Distribution System	Goddard
PCDU	Power Conversion and Distribution Unit	Goddard
PCE	Power Control Electronics	Goddard
PCE	Power Conversion Electronics	Goddard
PCE	Process Communications Engineer	Goddard
PCEA	Pointing Control Electronics Assembly	Goddard
PCENT	Gravitropic Responses of Plant Seedlings	CASI
PCG	Protein Crystal Growth	Goddard
PCGII	Protein Crystal Growth II	CASI
PCGIII	Protein Crystal Growth III	CASI
PCGPROTO	Protein Crystal Growth Prototype	CASI
PCGU	Protein Crystal Growth Unit	CASI
PCI	Peripheral Component Interface	Goddard
PCI	Personal Computer Interface	Goddard
PCI	Programmed Composites Inc.	Goddard
PCIE	President's Council on Integrity and Efficiency in Government	Langley
PCL	Parallel Communications Links	Goddard
PCM	Power Control Module	Goddard
PCM	Procurement Contract Management	Goddard
PCM	Pulse Code Modulation	CASI
PCM	Phase Change Material	CASI
PCMI	President's Council on Management Improvement	Langley
PCMU	Power Control Monitoring Unit	Goddard
PCMU	Propulsion Control and Monitor Unit	Goddard
PCN	Procurement Control Number	Goddard
PCN	Program Control Number	Langley
PCN	Project Control Number	Goddard
PCO	Procedure Change Order	Goddard
PCP	Parts Control Plan	Goddard
PCR	Payload Changeout Room	Goddard
PCS	Planning and Control System	Goddard
PCS	Pointing Control Subsystem	Goddard
PCS	Pressure Control System (Space Shuttle)	CASI
PCS	Pointing Control System	CASI
PCSIU	PCS Interface Unit	Goddard
PCTR	Physical Constants Testing Reactor	CASI
PCU	Power Conditioning Unit	Goddard
PCU	Power Converter Unit	Goddard
PCU	Power Control Unit	CASI
PCUA	Pressure Control Unit, ATLAS	CASI
PD	Position Description	Goddard
PD	Power Distribution	Goddard
PD	Product Data	Goddard
PD	Proportional and Derivative	Goddard
PDA	Percentage of Defectives Allowable	Goddard
PDA	Personal Digital Assistant	CASI
PDA	Photon Detector Assembly	Goddard
PDA	Power Distribution Assembly	Goddard
PDA	Preliminary Design Audit	Goddard
PDB	Project Database	Goddard
PDC	Project Design Center	Goddard
PDD	Payload Definition Document	Goddard
PDD	Product Definition Data	Goddard
PDDI	Product Definition Data Interface	Goddard
PDDU	Power Distribution and Drive Unit	Goddard
PDE	Product Data Exchange	Goddard
PDES	Product Data Exchange using STEP	Goddard
PDF	Payload Data Formatter	Goddard
PDF	Portable Document Format	CASI
PDF	Probability Density Function	CASI
PDF	Processor Defined Function	CASI
PDF	Programmable Data Format	Goddard
PDI	Payload Data Interleaver	Goddard
PDI	Professional Development Initiative	Goddard
PDL	Ponce de Leon	Goddard
PDL	Program Design Language	Goddard
PDLG	PitmanDunn Labs. Group, Frankford Arsenal, Philadelphia, Pa.	CASI
PDM	Primary Deployment Mechanism (Solar Array)	Goddard
PDM	Primary Drive Motor	Goddard
PDM	Product Data Management	Goddard
PDM	Propellant Distribution Module	Goddard
PDM	Pulse Duration Modulation	CASI
PDME	Precision Distance Measuring Equipment	CASI
PDMO	Product Data Management Office	Goddard
PDMP	Program Data Management Plan	Goddard
PDMP	Project Data Management Plan	CASI
PDO	Property Disposal Officer	Langley
PDOP	Position Dilution of Precision	CASI
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PDP	Professional Development Program	Goddard
PDP Computer	(Tradename for a PackardBell digital computer system)	CASI
PDPF	Packet Data Processing Facility	Goddard
PDR	Photo Dissociation Region	Goddard
PDR	Preliminary Design Review	CASI
PDR	Preferential Departure Route	CASI
PDRD	Program Definition and Requirements Document	Langley
PDRS/PFTA	Payload Deployment and Retrieval System/Payload Flight Test Article	CASI
PDS	Planetary Data System	CASI
PDSU	Power Distribution and Switching Unit	Goddard
PDSU	Power Distribution Servicing Unit	Goddard
PDT	Performance Demonstration Test	Goddard
PDT	Procurement Development Team	Goddard
PDT	Product Design Team	Goddard
PDT	Product Development Team	Goddard
PDT	Pacific Daylight Time	CASI
PDU	Power Distribution Unit	Goddard
PDU	Power Drive Unit (Space Shuttle)	CASI
PE	Program Engineer	Goddard
PE	Propulsion Equipment	Goddard
PEB	Performance Evaluation Board	Goddard
PEC	Passive Experiment Carrier (one of four exp. comprising MEEP)	Langley
PECL	Position Emitter Coupled Logic	Goddard
PED	Payload Element Developers	CASI
PED	Period End Date	CASI
PED	Phase Element Decomposition	CASI
PED	Platform Equipment Deck	Goddard
PED	Potential Energy Distribution	CASI
PED	Pyro-Electric Detector	CASI
PEGASUS	Pegasus Air-Breathing Launch Vehicle	CASI
PEGASUS	Power Generating System for Use in Space	CASI
PEM	Partial Environment Monitor	Goddard
PEM	Particle Environment Monitor	Langley
PEM	Production Efficiency Model	Goddard
PEM	Pacific Exploratory Mission	CASI
PEM	Proton Exchange Membrane	CASI
PEM-W	Pacific Exploratory Mission - West (GTE)	Langley
PEO	Polar Earth Orbit	CASI
PEP	Performance Evaluation Plan	Goddard
PEP	Proposal Entry Processor	Goddard
PEP	Power Extension Package	CASI
PER	Pre-Environmental Review	Goddard
PER	Preliminary Engineering Report (KSC)	Langley
PERR	Pre-Environmental Readiness Review	Goddard
PERT	Program Evaluation and Review Technique	CASI
PESS	Programmable Escape System Sequencer	CASI
PET	Piston Engine Technology	CASI
PET	Poly-Ethylene Terephthalate	CASI
PET	Positron Emission Tomography	CASI
PET	Production Environmental Test	CASI
PET	Proton Electron Telescope	CASI
PETN	Pentaerythritol Tetranitrate	CASI
PETS	Proximity Effect Tunneling Spectroscopy	CASI
PEU	Peripheral Electronics Unit	Goddard
PEU	Processing Electronics Unit	Goddard
PF	Proto Flight	Goddard
PFD	Primary Flight Display	CASI
PFES	Portable Field Emission Spectrometer	CASI
PFET	Positive Channel Field Effect Transistor	CASI
PFG	Perfluoroguanidine	CASI
PFM	Project Formulation Manager	Goddard
PFM	Proto-Flight Model	Goddard
PFM	Pulse Frequency Modulation	CASI
PFMS	Planar Flow Melt Spinning	CASI
		back to top
PFO	Project Formulation Office	Goddard
PFR	Prime Focal Ratio	Goddard
PFR	Portable Foot Restraint (Space Shuttle)	CASI
PFRR	Poker Flat Research Range	Goddard
PFS	Parallel File System	Langley
PFU	Proto-Flight Unit	Goddard
PG&S	Purchased Goods and Services	Goddard
PGHM	Payload Ground Handling Mechanism	CASI
PGS	Primary Guidance Subsystem	CASI
PGS	Product Generation System	CASI
PGSOW	Precision Guided Stand Off Weapons	CASI
PGT	Pistol Grip Tool	Goddard
PHA	Pulse Height Analysis	Goddard
PHA	Pulse Height Analyzer	Goddard
PHBW	Personal Hygiene Body Wipe	CASI
PHCF	Pituitary Growth Hormone Cell Function	CASI
PHE	Propellant Handling Unit	Goddard
PHS	Personal Hygiene Station (Space Shuttle)	CASI
PHSF	Payload Hazardous Servicing Facility	Goddard
PHY	Physical Layer Protocol