ASTM E349-06

Standard Terminology Relating to Space Simulation

General Information

• Status: Historical
• Publication Date: 31-Mar-2006
• ICS: 01.040.49 - Aircraft and space vehicle engineering (Vocabularies)
• ICS: 49.140 - Space systems and operations
• Technical Committee: E21 - Space Simulation and Applications of Space Technology

Relations

• Replaces: ASTM E349-00 - Standard Terminology Relating to Space Simulation
• Effective Date: 01-Apr-2006
• Replaced By: ASTM E349-06(2014) - Standard Terminology Relating to Space Simulation
• Effective Date: 01-Apr-2014
• Referred By: ASTM E491-73(2020) - Standard Practice for Solar Simulation for Thermal Balance Testing of Spacecraft
• Effective Date: 01-Apr-2006
• Referred By: ASTM C1483/C1483M-17(2022) - Standard Specification for Exterior Solar Radiation Control Coatings on Buildings
• Effective Date: 01-Apr-2006
• Referred By: ASTM E284-22 - Standard Terminology of Appearance
• Effective Date: 01-Apr-2006
• Referred By: ASTM E512-94(2020) - Standard Practice for Combined, Simulated Space Environment Testing of Thermal Control Materials with Electromagnetic and Particulate Radiation
• Effective Date: 01-Apr-2006
• Referred By: ASTM E423-71(2019) - Standard Test Method for Normal Spectral Emittance at Elevated Temperatures of Nonconducting Specimens
• Effective Date: 01-Apr-2006
• Referred By: ASTM E307-72(2019) - Standard Test Method for Normal Spectral Emittance at Elevated Temperatures
• Effective Date: 01-Apr-2006
• Referred By: ASTM E772-15(2021) - Standard Terminology of Solar Energy Conversion
• Effective Date: 01-Apr-2006
• Referred By: ASTM E434-10(2020) - Standard Test Method for Calorimetric Determination of Hemispherical Emittance and the Ratio of Solar Absorptance to Hemispherical Emittance Using Solar Simulation
• Effective Date: 01-Apr-2006

Standards Content (Sample)

NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
Contact ASTM International (www.astm.org) for the latest information
Designation: E349 − 06
StandardTerminology Relating to
1
Space Simulation
This standard is issued under the fixed designation E349; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision.Anumber in parentheses indicates the year of last reapproval.A
superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
INTRODUCTION
These definitions pertain to technologies related to space environment simulation. Where possible,
existing international and national standard definitions have been used.
ELECTROMAGNETIC RADIATION TERMS
NOTE 2—In general, nuclear radiations and radio waves are not
FUNDAMENTAL CONCEPTS
considered in this vocabulary, only optical radiations, that is, electromag-
absorption, n—transformation of radiant energy to a different
netic radiations (photons) of wavelengths lying between the region of
transition to X-rays (1 nm) and the region of transition to radio waves (1
form of energy by interaction with matter.
mm).
complex radiation, n—radiation composed of a number of
reflection, n—return of radiation by a surface without change
monochromatic radiations.
offrequencyofthemonochromaticcomponentsofwhichthe
diffusion, n—change of the spatial distribution of a beam of
radiation is composed.
radiation when it is deviated in many directions by a surface
refraction, n—change in the direction of propagation of
or a medium.
radiation determined by change in the velocity of propaga-
emission, n— release of radiant energy.
tion in passing from one medium to another.
infrared radiation, n—radiation for which the wavelengths of
spectrum of radiation, n—(1) spatial display of a complex
the monochromatic components are greater than those for
radiation produced by separation of its monochromatic
vissible radiation, and less than about 1 mm.
components.
NOTE 1—The limits of the spectral range of infrared radiation are not (2) composition of a complex radiation.
welldefinedandmayvaryaccordingtotheuser.CommitteeE-2.1.2ofthe
CIE distinguishes in the spectral range between 780 nm and 1 mm: transmission, n—passage of radiation through a medium
without change of frequency of the monochromatic compo-
IR-A 780 to 1400 nm
IR-B 1.4to3µm
nents of which the radiation is composed.
IR-C 3µmto1mm
ultraviolet radiation, n—radiation for which the wavelengths
irradiation, n—application of radiation to an object.
ofthemonochromaticcomponentsaresmallerthanthosefor
monochromatic radiation, n—radiation characterized by a
visible radiation and more than about 1 nm.
single frequency. By extension, radiation of a very small
NOTE3—Thelimitsofthespectralrangeofultravioletradiationarenot
range of frequency or wavelength that can be described by
welldefinedandmayvaryaccordingtotheuser.CommitteeE-2.1.2ofthe
stating a single frequency or wavelength.
CIE distinguishes in the spectral range between 100 and 400 nm:
UV-A 315 to 400 nm
radiation, n—(1) emission or transfer of energy in the form of
UV-B 280 to 315 nm
electromagnetic waves or particles.
UV-C 100 to 280 nm
(2) the electromagnetic waves or particles.
visible radiation, n—any radiation capable of causing a visual
1
sensation.
These definitions are under the jurisdiction ofASTM Committee E21 on Space
Simulation and Applications of Space Technology and are the direct responsibility
NOTE 4—The limits of the spectral range of visible radiation are not
of Subcommittee E21.02 on Terminology, Units and Editorial.
well defined and may vary according to the user. The lower limit is
Current edition approved April 1, 2006. Published April 2006. Originally
generallytakenbetween380and400nmandtheupperlimitbetween760
approved in 1968. Last previous edition approved in 2000 as E349–00. DOI:
−9
10.1520/E0349-06. and 790 nm (1 nanometer, nm=10 m).
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
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E349 − 06
NOTE 9—For a given plate, the internal absorptance is a function of the
QUANTITIES
path length of the radiation in the plate and thus of the angle of incidence.
absorptance, n—ratiooftheabsorbedradiantorluminousflux The fundamental concept is spectral internal absorptance. a(λ).
i
to the incident flux. Symbol: α , α , α.
e v
internal transmission density, n—logarithm to the base 10 of
NOTE 5—In general, the value of the absorptance depends upon the the reciprocal of the internal transmittance. Symbol: D,
i
modeofirradiation,thespectralcomposition,andthestateofpolarization
D =−log τ.
i 10 i
of the incident radiation.
NOTE 10—See Note 12 of internal transmittance.
absorptivity of an absorbing material, n—internal absorp-
NOTE 11—In German, the symbol E is still in use and the natural
logarithm is also used so
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