ECSS Terms and definitions | European Cooperation for Space Standardization

The Excel sheet with ECSS Definitions from the Active and Superseded ECSS Standards listed in the ECSS DOORS database is her available for download:

–> ECSS-Terms-and-Definitions_sorted_A-Z(exported from DOORS db 0.6-October2017).xlsx

"term ""performance""deleted "
(final) package
(intermediate) package
(original) date code
(primary) package
(quasi) static loads
(relifing) date code:
(risk) communication
(risk) index
(risk) management process
(risk) reduction
(risk) scenario
(risk) trend
(screw) thread
(total) non-ionising dose, (T)NID, or non-ionising energy loss (NIEL) dose
1553 message
24-hour equivalent noise exposure level
[launcher] production facilities
a turn of wire
A-basis design allowable (A-value)
a-weighting
abbreviated functional test (AFT)
aberration of light
ablated thickness
ablation
absolute knowledge error (AKE)
absolute performance error (APE)
absorbance, A
absorbed dose
absorptance
absorption
absorptivity
accelerance
accelerated testing
acceleration factor
acceptable weld
acceptance
acceptance authority media
acceptance level
acceptance margin
acceptance notification
acceptance of (risk)
acceptance temperature range
acceptance test
acceptance verification report
accident
accommodation coefficient
accuracy
accuracy of measurement
achieved availability
acknowledge
action level
active redundancy
activity
actuator
adjustable indenter tool
aerodynamic heating
ageing
agent
aggressive environment
aided tracking
air kerma
airborne particle
airborne particle cleanliness class
albedo
alert
alert level
alignment reference frame (ARF)
all fire
all weld metal tensile test specimen
allowable load
allowable temperatures
alpha sample
aluminium equivalent thickness
ambient dose equivalent, H*(d)
ambient humidity
ambient level
ambient temperature
anaerobic
analysis
analytical life
angle quantisation error
angular increment
angular random walk (ARW)
angular rate
angular rate measurement
angular white noise (AWN)
annular ring
anodizing
anomaly
anoxic
antenna factor
antenna farm
antenna port
antenna RF chain
antenna support structure
anti-aliasing filter
antistatic material
AOCS end-to-end tests
AOCS functional simulator
AOCS mode
Ap, Kp indices
apparent mass
applicable document
application process
application specific integrated circuit (ASIC)
application specific standard products (ASSP)
approval
approval authority
approving authority
arc-jet test
area analysis
area array device (AAD)
arm plug receptacle
armed
array antenna
array-fed reflector antenna
artwork
as-designed
as-manufactured
as-manufactured hole
aseptic
ASIC technology
aspect angle
aspect ratio
assembled article
assembled PCB
assembly
assembly house
associated test coupon
assurance
asynchronous data transmission
atmospheric albedo neutrons
attenuated total reflection
attitude and orbit control system (AOCS)
audit
audit criteria
audit evidence
auditee
auditor
auroral zone
authorization
auto ignition temperature
auto modal assurance criterion AutoMAC
autofrettage
automated optical inspection (AOI)
automatic code generation
automation
autonomous attitude determination
autonomous attitude tracking
autonomous star tracking
availability
avionics test bench
B-basis design allowable (B-value)
back-drilled hole
back-drilled via
background count
background subtraction
backward contamination
baffle
bakeout
ball grid array (BGA)
barbecue mode
bare solar cell
base laminate
base metal
baseline
basic copper
batch
batch (material)
batch lot
beam divergence
beam forming network (BFN)
beta sample
bias
bias instability
bifurcated (split) terminal
binder
bioaerosol
biobarrier(s)
bioburden
bioburden controlled
bioburden reduction
biocontamination
biodiversity
biological contamination
biological indicators
bit
bit error rate
black box
black light illumination
blank
blind via
blind-via-in-pad
blister
blistering
block diagram
bolt
bonding
bondply
boresight reference frame (BRF)
boss
bremsstrahlung
bridging
bubble
bubbles
buckling
buffeting
build-up
buried via
burning time, tb
burst pressure
business agreement
byte
calculated temperature range
calibration
CAN-ID
cap lift
capability
capillary driven loop (CDL)
capillary pumped loop (CPL)
cargo
cartography
cartridge
case temperature
catastrophic
catastrophic hazard
category 1 manufacturer
category 2 manufacturer
category A
category B
cause
cell
cell library
centralised
certification
chain
change control
channel
character
character level
characteristic velocity, C*
characterization
charge
charred thickness
chill-down
chip
circuit
cladding
class 1 change
class 2 change
clean area
clean zone
cleaning
cleaning efficacy
cleanliness
cleanliness (contamination) control
cleanliness (of a solid surface)
cleanliness and contamination control plan
cleanliness controlled area
cleanliness level
cleanliness requirement specification
cleanliness verification
cleanroom
climatic test
clinched-lead termination
close visual inspection
closed-loop ECLSS
co-ordinate modal assurance criterion CoMAC
co-planarity
coating
coating lot
code coverage
coding
coherence function
cold flow
cold redundancy
cold redundant bus
cold solder joint
collected volatile condensable material (CVCM)
collective assembled devices
column grid array (CGA)
combined loads
command
command packet
commandability
commandable vital function
commercial component
commissioning
common cause failure
common mode failure
common mode voltage
communication bus system latency
communication device
communication frame (CF)
communication service
compatibility
compatibility life
compatible
competent assessor
complex mode indicator function
complex mode shape
component
component bare solar cell
component density
component lead
component type TIDS
component type TNIDS
composite
composite material
composite over-wrap
composite over-wrapped pressure vessel (COPV)
composite over-wrapped pressurized component (COPC)
composite over-wrapped pressurized structure (COPS)
composite over-wrapped special pressurized equipment (COSPE)
composite pressure vessel (CPV)
composite pressurized structure (CPS)
composite sandwich construction
composite structure
compound parameter
compression
concurrent engineering
condensable hydrocarbon
condition
conducted emission (CE)
conductive coating
conductive layer
conductive material
conductor
confidentiality
configurable code
configuration
configuration baseline
configuration control
configuration control board
configuration definition document
configuration document
configuration identification
configuration item
configuration management
configuration status
configuration status accounting
configuration verification
configured item
confirmation
confirmation body
conformal coating
conformance
conformity
connection
consequence tree
constant conductance heat pipe (CCHP)
constrained DOF
constraint
consumer
contact angle
contact discharge method
contact vacuum evaporation batch
container
containment
contaminant
contaminant environment
contaminant gas
contaminate, to
contamination
contamination budget
contamination potential
contamination sensitive
content addressable memory
context of use
continuation test
continuous slowing down approximation range (CSDA)
contract
contributing loads
control character
control code
control function
control system
controlled ambient conditions
controlled area
controlled environment
controlled ICD
controlled vacuum conditions
coordinate system
correct attitude
correct attitude threshold
corrective action
corrective maintenance
correlation
corridor
corrosion
corrosion resistant alloys
corrosion-resistant aluminium alloys
corrosion-Resistant Steel (CRES)
cost estimating
cost reimbursement contract
COTS
COTS, OTS, MOTS software
coupon
cover layer (flexible circuit)
coverglass
coverglass coating lot
coverlay
crack
crack aspect ratio, a/c
crack growth rate
crack growth retardation
crack tip plastic zone
crack-like defect
cracked solder joint
crazing
creep
crew
crew station
crew systems
crewed space segment element
crimping configuration
crimping tool
critical
critical charge
critical crack size
critical flaw
critical initial defect, CID
critical item
critical material
critical mechanical part
critical net
critical operation
critical path
critical pressure
critical process
critical software
critical speed
critical stress-intensity factor
critical structure
critical surface
critical track
critical zone
criticality
cross support
cross-section
cross-strapping
cryo-pumping
cryogenic control system (CCS)
cryogenic temperature range
cryostat
cumulated angular increments
current
current overshoot decay time
current overshoot recovery time
customer
cycle
cyclic data transmission
cyclic loading
D-value
D-value, D10 value
damage tolerance
damage tolerance threshold strain
damage tolerant
damped natural frequency
damping
data bus system
data character
data exchange
data integrity
data origin authentication
data rate
data report
data sheet
data signalling rate
data-strobe
dataset
datation
de-orbiting
de-serialization
deactivated code
deactivation
deadband
debubbling
decision
decision coverage
decoding
decompression
decontamination
deep space
deep-dielectric charging
defect
deflagration
deformed interconnector
degrading factors of environment
degrees of freedom
delamination
deliverable output force (FL)
deliverable output torque (TL )
delta qualification
delta verification
departure
dependability
dependent DOF
depressurization
depth of discharge (DOD)
derating
design
design allowable
design authority
design burst pressure
design factor
design flow
design for test (DFT) structure
design iteration
design limit load (DLL)
design load (DL)
design parameters
design rules check
design temperature range
design ultimate load (DUL)
design ultimate stress
design yield load (DYL)
design yield stress
designer
destination
destination address
destination identifier
destination list
destructive physical analysis
destructive physical analysis (DPA)
detail specification
detected defect
detection time
detector
detonation
detonator
detrimental deformation
development
development step
development test prior qualification
deviation
device
device telecommand
dew point
dewar
dewetting
DHS core element
DHS data interchange bus
DHS peripheral element
die lot
dielectric
differential pressure
diffuse reflection
diffusivity
dig
dimensioning
dimensioning case
direct effect
direct flux
direct manpower cost
direct measurement method (DMM)
directional dose equivalent
discharge coefficient, Cd
discipline
discolouration
discrepancy
disinfection
displacement damage
disposal
dissimilar metals
dissipative material
distribution function f(x,v)
disturbed solder joint
domain
dominant and recessive states of CANbus signals
dominant bit level
dose
dose equivalent
dose profile
dose rate
double insulation
downstream
draining
drilled hole
driver
driving point residue
drops
dross
dry humidity
dry mass
dry-out
dust
dwell time
dynamic compliance
dynamic load
dynamic reduction (also referred as dynamic condensation)
dynamic stiffness
dynamic wave soldering machine
Earth Exploration-Satellite service
Earth infrared
economic conditions
effective D-value
effective dose
effective length
effective mass
effective modal mass
effective sample area
effectiveness
efficiency
eigenfrequency
ejected mass
electric thruster
electrical bonding
electrical clearance
electrical connection
electrical field
electrical rule check
electro-explosive device
electromagnetic compatibility (EMC)
electromagnetic compatibility control
electromagnetic environmental effects
electromagnetic interference (EMI)
electromagnetic interference safety margin (EMISM)
electronic processing unit
electrostatic
electrostatic breakdown
electrostatic charge
electrostatic discharge
electrostatic discharge (ESD)
electrostatic discharge sensitive (ESDS)
electrostatic shield
element
elementary function
EM quality level hybrid
embedded space segment element
emergency
emission
emittance (_)
emittance (e)
encapsulated bioburden
end effect
end item
end of flight or final mass
end of packet marker
End of Packet marker (EOP)
end tail
end-user
energetic material
energetic particle
engine inlet pressure
engineering authority
engineering model
engineering qualification model
enhanced low dose rate sensitivity (ELDRS)
entity
envelope
environment
environmental control and life support (ECLS)
environmental control and life support system (ECLSS)
environmental tests
equipment
equivalent dose
equivalent fluence
equivalent LET
erosive burning
Error End of Packet marker (EEP)
error index
error recovery scheme
ESD protected area
ESD protective material
ESD protective packaging
essential function
etchback
eutectic alloy
evaluated process
event
event report
ex-situ measurement
exchange level
exchange structure
exclusion angle (EA)
execution notification
execution verification report
exfoliation
existing software
exosphere
experiment
explosive component
explosive function
explosive subsystem
explosive train
explosively actuated device
exposed surfaces
exposure temperature range
exposure time
extender protocol identifier
exterior surfaces
external charging
external field
external interface
external pressure
extrapolated range
F10.7 flux
fabrication
factor of safety (FOS)
fail operational
fail safe
fail-safe
fail-safe structure
failure
failure cause
failure effect
failure mode
failure mode and effects analysis (FMEA)
failure mode, effects and criticality analysis (FMECA)
failure propagation
failure scenario
failure tolerance
false attitude
false star
fastener
fatigue
fault
fault condition
fault coverage
fault current emission
fault current tolerance
fault tolerance
fault voltage emission
fault voltage tolerance
feature
ferrule
fibre
fibre failure
field cleaning
field programmable gate array (FPGA)
field strength
filler
filler metal
fillet
fine pitch
finite element model FEM
finite life range
firmware
Firsov scattering
fitting
fixed price contract
flammability
flaw
flexibility
flexible
flexible PCB
flight dynamics (FD)
flight model
flight operations
flight segment
flight spare
floorplan
flow control token (FCT)
fluence
fluid hammer
flushing
flushing or purging
flutter
flux
flux activity
foil
foldback current limiter (FCL)
forced vibration
formal system
forward contamination
Fourier transformation
FOV spatial error
FR4
fracture critical item
fracture limited life item
fracture toughness
frame
franchised distributor
free DOF
free molecular flow regime
free vibration
frequency bandwidth
frequency coordinator
frequency response assurance criterion FRAC
frequency response function FRF
frozen ICD
frozen outputs
FTIR spectrometer
full cone field of view
full functional test (FFT)
fully regulated bus
function
function tree
functional analysis
functional description
functional FMEA
functional FMECA
functional transducer
fundamental resonance
fused multiple optical head configuration
galling
galvanic corrosion
gas generators
gas-tight area
generalized mass
generally clean
geocentric solar magnetospheric coordinates (GSM)
geometrical mathematical model (GMM)
glass compression
glass meniscus
graveyard orbit
ground displacement voltage
ground plane
ground segment
ground segment customer
ground segment element
ground segment equipment
ground segment operations
ground segment subsystem
ground segment supplier
ground segment system
ground support equipment
ground support equipment GSE
ground system
grounding
guidance navigation and control functions (GNC)
half-rectangular field of view
half-stack
haloing
handbook
handled or handling
handling
hard coded (or Hardcoded) data
hardware FMEA
hardware FMECA
hardware-software interaction analysis
hazard
hazard acceptance
hazard analysis
hazard control
hazard elimination
hazard manifestation
hazard minimization
hazard reduction
hazard scenario
hazard tree
hazardous
hazardous command
hazardous event
hazardous fluid container
HDL model
health status
heat affected zone (HAZ)
heat dissipation
heat flux
heat leak
heat lift
heat pipe (HP)
heat pipe diode (HPD)
heat sink
heat storage
heat transport capability
heater latching current limiter (HLCL)
hemispherical emittance (eh)
HEPA particle filter
heterosphere
high density interconnect (HDI)
high frequency PCB
high priority command
high Priority telecommand (HPC)
high priority telemetry
high speed signal
high temperature range
high voltage
high-efficiency particulate air filter
hole wall pull away
homosphere
hook terminal
host receive buffer
host system
host transmit buffer
hot redundancy
hot redundant bus
hot spot temperature
hot structure
housekeeping telemetry
HTE
human centred design
human factors
human-machine system
hump effect
hybrid
hybrid circuit
hybrid microcircuit
hybrid welding
hydrogen embrittlement
hypergolic propellants
hypoxic
icicles
ICRU Soft Tissue
ICRU sphere
identification
idle data
ignition time, tign
image download
image output time
impact
impact damage
impedance
implementation document
improper response
impulse bit
in process correction
in-process testing
in-situ measurement
inadvertent response
incident
inclusion
inclusions
independent multiple optical head configuration
indication
indirect effect
indirect flux
indirect measurement method (IMM)
individual (risk)
individual error source
induced contaminant environment
induced environment
induced space environment
inertial frame
inertial reference frame (IRF)
inertial resistance force (FD)
inertial resistance torque(TD)
information system
information/documentation management
informative
infrared reflector
infrared spectroscopy
infrared test
inhibit
initial crack size
initial mass
initiation
initiator
initiator user application
input axis misalignment
input filter charge time
input overshoot charge
input port
input range
inspectability
inspection
instantaneous availability
instruction
insulation thickness (ej)
insulator
integrated single optical head configuration
integration
integration testing
integration time
intellectual property (IP) core
inter-fibre failure
interchangeability
interconnect defect (ICD)
interconnect stress test (IST)
interconnected cell
interface
interface actor
interface control document (ICD)
interface definition document (IDD)
interface end
interface identification document
interface plane
interface requirement document (IRD)
interface responsible
interfacial connection
interlayer
internal charging
internal dielectric charging
internal field
internal interface
internal pressure
interplanetary magnetic field
intralayer
intrinsic wire strength
ion engine
ionisable contaminant
ionising dose
ionising radiation
ionizing radiation
irradiance
isochronous data transmission
isochronous service
isolating material
isotropic
IST coupon
J2000.0
jitter
job card
joint
JTC
junction temperature
key personnel
knowledge error
L or L shell
L or L-shell
L shell
laminate
lap joint
latching current limiter (LCL)
latching or locking
launch base
launch campaign
launch complex
launch operations
launch range
launch segment
launch segment element
launch segment equipment
launch segment subsystem
launch segment system
launch service
launch system
launch vehicle
launcher
launcher element
launcher stage
launcher system
lay-length
lay-out
LCL class
LCL switch dissipative failure
lead time (supplier delay)
leak-before-burst (LBB)
lens antenna
LET Threshold
life cycle
life profile
lifetime
lightning indirect effects
limit aero-thermal heat flux
limit load (LL)
limit temperatures
limit testing
limited service life items
limited-life product
line
line impedance stabilization network (LISN)
linear energy transfer (LET)
linear system
liner
link
link destination
link interface
link receiver
link source
link transmitter
link-character
lint-free
liquid rocket engine
load enhancement factor, LEF
load ratio
load spectrum
loaded mass
loading event
local design factor (KLD)
local SCET
locally-critical function
logical address
logical model
logistic delay
long duration effect
loop heat pipe (LHP)
loss of mission
lot
lot acceptance
low voltage differential signalling
lubrication
lug
machine oil
machine welding
macrocell
magnetic local time (MLT)
main body
maintainability
maintenance
maintenance book
maintenance level of attitude tracking
major nonconformances
major reconfiguration function
manual welding
manufacturer
margin
margin philosophy
margin policy factor (KMP)
mark
mass flow rate
mated bioburden
material
material design allowable
maximum cryogenic heat load
maximum cryogenic temperature
maximum design pressure (MDP)
maximum expected acceleration
maximum expected acoustic spectrum
maximum expected operating pressure (MEOP)
maximum expected random vibration spectrum
maximum expected shock
maximum expected sinusoidal vibration environment
Maxwellian distribution
Mb/s
mean availability
mean down time
mean free path
mean knowledge error (MKE)
mean organ absorbed dose
mean performance error (MPE)
mean range
mean time between failures
mean time between outages
mean time to failure
mean time to outage
mean time to repair
mean up time
measling
measling/measles
measurement date
mechanical damage
mechanical part
mechanical properties
mechanical pump driven loop (MPDL)
mechanical reference frame (MRF)
mechanical testing
mechanism
membrane filter
memory
message
metadata
metal core
metal core PCB
metallic pressure vessel (MPV)
metallic pressurized component (MPC)
metallic pressurized structure (MPS)
metallic special pressurized equipment (MSPE)
meteoroid stream
meteoroids
Meteorological-Satellite service
metric
micro-organism
micro-yield
microvia
microvia layers
migration
mil
milling
minimum bend radius
minimum impulse bit
minimum switch-on temperature
minor nonconformances
mission
mission critical
mission exploitation
mission information
mission life
mission operations
mission operations data
mission phase
mission products
mission-critical function
mixture ratio
mobility
modal analysis
modal assurance criterion MAC
modal confidence factor MCF
modal DOFs (also referred as modal coordinates)
modal identification
modal parameters
modal participation factor
modal scale factor MSF
modal survey test MST
mode
mode indicator function MIF
mode shape
mode transition
model
model factor (KM)
model philosophy
modification
modified condition and decision coverage
molar absorptivity, _
molecular column density (MCD)
molecular contaminant
molecular contamination
monitoring
multi-layer anti-reflection coating
multi-layer circuit board
multi-variate mode indicator function MMIF
multilayer
multilayer PCB
multimaster-capable, event-oriented message transmission
multipaction
multiple bit upset (MBU)
multiple cell upset (MCU)
multiple star tracking maintenance level
multiple-axis configuration
nano-Tesla
natural environment
natural frequency
natural space environment
near ultraviolet (NUV) radiation
necessary bandwidth
need
net positive suction pressure NPSP
netlist
network
network level
nick
NIEL or NIEL rate or NIEL coefficient
night sky test
NMT master
NMT slave
no fire
no-flow prepreg
node
noise
nominal aero-thermal heat fluxes
nominal condition
nominal cryogenic heat load
nominal cryogenic temperature
nominal nameplate capacity
nominal temperatures
non affected thickness(es)
non essential loads
non-corrosion-resistant aluminium alloys
non-corrosion-resistant steel
non-critical structure
non-functional pad
non-hazardous LBB failure mode
non-plated hole
non-shedding
non-volatile residue
non-volatile residue (NVR)
nonconformance
nonconformity
normal mode shape
normal pitch
normal-character
normative
not operating
notching
notification
nozzle
NULL
number of layers
nut
OBCP code
OBCP engine
OBCP language
OBCP step
OBCP system
object path
obscuration factor
obscuration factor (OF)
observability
observable symptoms
occupancy states
occupied bandwidth
octet
off-loading
off-the-shelf
offgassing
offgassing product
omnidirectional flux
on-board autonomy
on-board control procedure
on-board file system
on-board memory
on-board monitoring
on-board operations procedure
on-board operations schedule
on-board parameter
on-board software
one sided tolerance limit
open-loop ECLSS
operability
operating conditions
operation
operational
operational modes
operational validation
operations
operations customer
operations nomenclature
operations supplier
operator error
optical head
optical system
orbital debris
organ equivalent dose
orthogonality check
out-of-band emission
outage
outgassed quantity
outgassing
outgassing rate
output bandwidth
output port
output transformation matrix
overall (risk)
overkill
overshield
Overview
oxygen concentration limit during the combustion of polymeric materials
package
packaged charge
packaging
packet
packet cargo
packet level
packing
pad
panel
parameter
parameter validity
parametric release
part
partial image download
partial pressure
particle
particle fallout
particle size
particulate
particulate contaminant
particulate contamination
particulate contamination (PAC)
parts engineer
parts procurer
passivation
passive intermodulation product
passive intermodulation products (PIM)
passive redundancy
path address
payload
PCB manufacturer
PCB technology
peelable
peeling
peer-entity authentication
performance
performance drift error (PDE)
performance error
performance reproducibility error (PRE)
performance test
permanent degradation of space segment function
permanent mission degradation
permanent molecular deposition (PMD)
personal dose equivalent (individual dose equivalent)
phase margin
photovoltaic assembly
photovoltaic assembly (PVA)
physical channel
physical layer operation procedure
physical level
pick-up
pickling
piece part
pits
pixel field of view
pixel spatial error
planetary protection
plasma
plasma wind-tunnel
plate
plated hole
plated through-holes (PTH )
plated-through hole
plugged via
plume
POGO
polarity test
polymer
population
port
portability (a quality characteristic)
positive control
positive indication of status
positively locked
post weld sample
potential fracture critical item, PFCI
potting compound
power quality requirements
pre-cleaning
pre-heating time
pre-test analysis
precision cleaning
preconditions body
predicted temperature range
preliminary ICD
prepreg
preservation
pressurant
pressure component (PC)
pressure drop coefficient
pressure vessel (PV)
pressurization
pressurized hardware (PH)
pressurized structure (PS)
pressurized system
preventive action
preventive maintenance
primary cell or battery
primary discharge
primary function
primary structure
priming
printed circuit board (PCB)
probability of correct attitude determination
probability of false attitude determination
probability of invalid attitude solution
procedure
process
process control monitor
process FMECA
process identification document
process parameter
process performance index
procurement authority
procurement lot
producibility
product
product assurance
product item
product life cycle
product tree
production lot
production run
project
project factor (KP)
project requirements document
projected peak-to-peak insulation distance
projected range
proof factor (jproof)
proof load
proof pressure
proof test
propagation time
propellant
propellant gauging
propellant mass
propulsion system
protected structure
protection device
proto flight test
protocol
protocol identifier
protoflight model
protoflight test
prototype device
prototype test
provision
proximate orbits
pseudo-ECL (PECL)
purging
pyrogen igniter
pyromechanism
pyrotechnic device
pyrotechnic igniter
qualification
qualification authority
qualification by similarity
qualification coupon
qualification level
qualification margin
qualification model
qualification temperature range
qualification test (system level)
qualified parts
qualified process
quality
quality assurance
quality characteristics (software)
quality control
quality factor
quality model (software)
quality representative
quantifiable structure variable
quartz crystal microbalance (QCM)
R-ratio
rack
radiant power, P
radiated emission (RE)
radiation
radiation belt
radiation design margin (RDM)
radiation lot acceptance test (RADLAT)
radiation verification test (RVT)
radiation weighting factor
radiative sink temperature
radio frequency (RF)
radiofrequency (RF)
RadPack
ram
ram direction
random load
rate random walk (RRW)
rating
raw material
re-acceptance
re-compression
re-orbiting
re-pressurization
re-weld
reaction time
reader
real mode shape
real-time
receiver
recessive bit level
recharge ratio (k)
reciprocity
reciprocity law
recovered mass loss (RML)
recurring product
red-plague
redesign
reduced functional test (RFT)
redundancy
redundancy master
redundant bus
redundant node
reference corner
reflectance, R
reflector antenna
reflux mode
regression testing (software)
relative biological effectiveness (RBE)
relative knowledge error (RKE)
relative performance error (RPE)
reliability
relieving loads
relifing
relifing procedures
remaining Factor
repair
repair welding
repeatability
repetitive overload
reply
reply packet
report
reporting data
repository path
representative production lot
representative sample
reprocessing
request
request for approval (RFA)
required factor, Kr
requirement
requirement traceability
residual hazard
residual life
residual mass
residual risk
residual strength
residual stress
resin
resin starvation
resistance soldering
resolution
resolved (risk)
resolved hazard
resonance
resonance frequency
resonance search
resource
response
response vector assurance criterion RVAC
reticule
retrigger interval
retriggerability
retriggerable latching current limiter (RLCL)
return flux
reusability
reverberation time (T60)
reversion
review
review authority
review item
review item discrepancy (RID)
review prerequisite
review team
review team leader
review_-of-_design
rework
RF chain
RF elements
RF lens
RF reflector
rigid
rigid body motion matrix
rigid double-sided PCB
rigid multilayer PCB
rigid PCB
rigid single-sided PCB
rigid-flex double-sided PCB
rigid-flex multilayer PCB
rigid-flex PCB
rigid/flex
ripple
risk
RLCL class
robustness
rosin
rosin-soldered joint
rotating machinery
router
routing
routing notification
routing switch
routing verification report
run on and run off tabs
safe
safe haven
safe life
safe life structure
safe state
safe-life
safety
safety approval authority
safety audit
safety critical function
safety critical mechanism
safety management system
safety policy
safety representative
safety risk
safety status parameter
safing
sample de-treat or re-treat
sample repair
sampling plan
scale factor error
scale factor non linearity
scale factor non linearity error
scatter factor
scavenging (leaching)
scenario propagation time
scheduling
scrap
scratch
screening
sculptured flex
sealed container
secondary arc
secondary cell or battery
secondary characteristic
secondary structure
security
segment
selective plating
self-signed certificate
sensing reference frame (SRF)
sensitive devices
sensitive item
sensitive surface
sensitive volume (SV)
sensitivity
sensitivity analysis
sensor settling time
separated single optical head configuration
sequential
sequential firing
sequential via
sequentially laminated multilayer PCB
serialization
service
service data unit
service life
service-provider
service-user
severity
severity of safety consequence
shank
sheet
shelf-life
shield
shipment lot
shock load
shock response spectrum (SRS)
shop traveller
side load
sign test
signal
signal analysis
signal conditioner
signal level
signal-to-noise ratio
silting
simplex
simulant
single event burnout (SEB)
single event dielectric rupture (SEDR)
single event disturb (SED)
single event effect (SEE)
single event functional interrupt (SEFI)
single event gate rupture (SEGR)
single event hard error (SEHE)
single event latch-up (SEL)
single event snapback (SESB)
single event transient (SET)
single event upset (SEU)
single layer anti-reflection coating
single point failure
single star tracking maintenance probability
single word multiple bit upset (SMU)
single-axis configuration
single-event upset (SEU), single-event effect (SEE), single-event latch-up (SEL)
singular input
sink
size of FE model
sizing
sizing pressure
skew
skip plating
slicing
sliver
SMAC (Spacecraft Maximum Allowable Concentration)
smear
soft magnetic material
software
software component
software intensive system
software item
software observability
software problem
software product assurance
software unit
solar absorbance (as)
solar absorptance (a)
solar absorptance (as)
solar array
solar cell
solar cell anti-reflection coating
solar cell assembly
solar cell assembly (SCA)
solar constant
solar energetic particle event (SEPE)
solar flare
solar panel
solar simulation test
solder
solder balling (solder balls)
solder coating
solder icicle
solder pad
solder stand-off
solder-cup terminal
solderability
soldering
soldering pad
soldering time
solid rocket motor
source
source format
space debris
space mission
Space Operation service (SO)
space programme
space qualified parts
Space Research service (SR)
space segment
space segment element
space segment equipment
space segment operations
space segment status
space segment subsystem
space segment system
space system
space system model
space test centre
spacecraft
spacecraft elapsed time (SCET)
spacing
spatter
special NDI
special pressurized equipment
special process
specific area
specific impulse, ISP
specification
specimen
spectral grade
spectrum control
splice
sporadic flux
sporicide
spurious emission
stability
stability margin
stack
stacking
stain
stakeholder
stand-alone space segment element
standard
standard evaluation circuit
standard NDI
star image
star magnitude
star tracking
start-up
start-up phase
statement
statement coverage
statement of work
static
static reduction (also referred as static condensation)
statistical ensemble
statistical process control
steady-state availability (asymptotic availability)
steady-state vibration
stellar reference frame (SRF)
step
sterile
sterility
sterility assurance level
sterilization
sterilization process
sticking coefficient
stiffness
stimulation
stimuli
stopping power
storage
storage area
storage long duration
storage site
storage zone
stress intensity factor, K
stress lines
stress relief
stress test
stress-corrosion
stress-corrosion cracking, SCC
structural design
structural model
structural-thermal model
structure
stud
stud termination
sub-cooling
sub-feature
subservice
subservice entity
subservice provider
subservice user
substrate
subsystem
success
success criteria
sun survivability
supplier
support segment
support system
surface accommodation
surface charging
surface cleanliness of chemicals (SCC)
surface cleanliness of particles (SCP)
surface cleanliness particles (SCP) classification
surface particle concentration
surge
survival mode
susceptibility
susceptibility threshold
switch-on capability
switch-on response time
symbol rate
sympathetic firing
synchronous data transmission
synchrotron radiation
synergism
synoptic display
synthetic parameter
system
system authority
system element
system engineering
system interface temperature point
tailoring
tape-lift
tape-lift sample
target
target format
target user application
task
tearing interconnector
technical data package
technical description
technical memorandum
technical requirements specification
technology review board
technology samples
telecommand
telecommand function
telemetry
telemetry link
temperature cycle
temperature difference
temperature gradient
temperature mean deviation (DTmean)
temperature reference point (TRP)
temperature stability
temperature standard deviation (_)
temperature uniformity
temperature variation
temporal noise
temporary degradation of space segment function
temporary mission degradation
terminal
terminal post
termination point
termination/terminal area
test
test analysis model TAM
test antenna
test block
test campaign
test case
test design
test equipment
test facility
test factors (KA and KQ)
test fluid
test pad
test pattern
test personnel
test piece
test procedure
test process
test script
test set-up
test specimen
test vehicle
testability
tether
thermal ambient test
thermal balance test
thermal component
thermal design case
thermal mathematical model (TMM)
thermal model
thermal node
thermal performance temperature range
thermal protection subsystem (TPS)
thermal shunt
thermal vacuum test
thermo elastic error
thermomechanically affected zone (THAZ)
thermosphere
thick coatings
thin film contamination
third party
threaded fastener
threshold limit value
threshold stress intensity range, DKth
throttling
through-bulkhead initiator (TBI)
through-going via
thrust
thrust centroid time
thrust chamber assembly (TCA)
thrust coefficient, CF
thrust misalignment
thrust out-centring
thrust vector control
thruster
tile
tilt for HP
tilt for LHP
time reference point
time synchronization cycle (TSC)
time to current overshoot
Time-Code
timing parameters
tinning
tip
tissue weighting factor
tolerance
tombstoning
total impulse
total ionising dose
total ionizing dose level (TIDL)
total mass loss (TML)
total non-ionizing dose level (TNIDL)
toxic
toxic hazard index (T)
traceability
traceability information (trace code)
track
trackable objects
trained inspector
tranquilization phase
transaction
transducer
transducer sensitivity
transfer line
transient
transient load
transition range
transmissibility
transmission medium
transmittance, T
transmitter
transport
traveller
treatment side of foil
triboelectric effect
tribology
trimming
trip-off
trip-off time
triple point
turbo pump
turret terminal
two-phase heat transport equipment (TPHTE)
two-phase loop (TPL)
ullage volume
ULPA particle filter
ultimate aero-thermal heat fluxes
ultimate cryogenic heat load
ultimate cryogenic temperature
ultimate design factor of safety (FOSU)
ultimate strength
ultimate temperature
ultrasonic bath
ultraviolet reflector
uncertainties
uncertainty
uncoated area
uncontrolled humidity
underfill
undervoltage protection (UVP)
unit
unit acceptance test temperature range
unit internal design temperature range
unit qualification test temperature range
unit test
unreachable code
unresolved (risk)
unstabilized stainless steel
unwanted emissions
upper part [A5]
upper stage [A5]
upstream
usability (a quality characteristic)
user
user application
UVP switch-off response time
vacuum
vacuum ultraviolet (VUV) radiation
valid population
validated design
validated process
validation
validity
validity flag
valve manoeuvring time
valve response time
variable amplitude spectrum
variable conductance heat pipe (VCHP)
VCM-test
venting
verification
Verification Control Board (VCB)
verification level
verification matrix
verification report
via
viable particle
viscosity
visibly clean
visibly clean highly sensitive
visibly clean plus ultraviolet
visibly clean sensitive
visibly clean standard
visual damage threshold (VDT)
visual inspection
vital function
vital telecommand
void
voids
volatile hydrocarbon
wafer lot
waiver
waiver request
wake
wake direction
walk-through
warm-up duration
watchdog body
watchdog step
water hammer
water vapour regained (WVR)
wave number, v
wave soldering
wave-soldering equipment
weave exposure
weave texture
weld heat affected zone (HAZ)
weld test record
welder
welding
welding inspector
welding operator
welding procedure specification (WPS)
welding supervisor
welding verification test plan
weldment
wetting
wicking
wire
wire-wrapped connection
witness sample
word
work breakdown structure
work instruction
work package
workpiece
world magnetic model
worm shaped bulge
worst case analysis
writer
X,Y direction
yield design factor of safety (FOSY)
yield strength
Z direction