Payload (Missile)(1) The warhead, its container, and activating devices in a military missile. (2) The satellite or research vehicle of a space probe or research missile.
Payload Build-up (Missile and Space)The process by which the scientific instrumentation (sensors, detectors, etc.) and necessary mechanical and electronic subassemblies are assembled into a…
PCMCIAPersonal Computer Memory Card International Association. Plug-in cards for computers (usually portables), which extend the storage and/or functionality.
Penaid (Penetration Aid)(Formerly an acronym for Penetration Aid.) Techniques or devices employed by offensive aerospace weapon systems to increase the probability of penetrating…
Penetration TestingThe portion of security testing in which the penetrators attempt to circumvent the security features of the system.
PEPPProducibility Engineering and Production Planning.
PeregrineAn Air Force boost-phase interceptor concept under development at USAF/SMC.
PerformanceThose operational and support characteristics of the system that allow it to effectively and efficiently perform its assigned mission over time.
Performance RequirementA requirement that specifies a performance characteristic that a system or system or system component must possess; for example, speed, accuracy…
Performance Specification(1) A specification that sets forth the performance requirements for a system or system component. (2) Synonymous with requirements specification.
PERT ChartA graphic portrayal of milestones, activities, and their dependency upon other activities for completion, and depiction of the critical path.
PESHEProgrammatic Environmental Safety and Health Evaluation.
PETA NPC controlled by a player such as a Wolf, Infernal, and so on.
PH&SPackaging, Handling and Storage (see PHST) (ILS term).
Phase One Engineering Team (POET)OBSOLETE. An FFRDC providing technical support to the Phase I Program Office. Now referred to as POET.
Phased ArrayThe arranging of radiating or receiving elements that, although physically stationary, is electronically steer-able and can switch rapidly from one target…
Phased DeploymentThe sequential steps of element deployments leading to a designated system capability that is realizable with fiscal and technological constraints.
PhenomenologyThe topological classification of a class of phenomena. Phenomenology efforts collect and analyze optical and radar signature data, and model phenomena…
PhotochemicalA chemical reaction resulting from exposure to radiant energy or light. 224
Photoelectric EffectThe process whereby a gamma ray (or x-ray photon) with energy somewhat greater than that of the binding energy of an electron in an atom, transfers all…
PhotonA photon is both a wave and a particle. A beam of light is composed of these particles.
PHS&TPackaging, Handling, Storage, and Transportation.
Physical AgentsDescriptive term that includes non-ionizing EMR, static electric and magnetic fields, ionization radiation, energy beams, noise, explosions, de-orbiting…