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Color Curly Brackets (indicating CPC extensions to IPC) References Date Revised

CPC
COOPERATIVE PATENT CLASSIFICATION
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INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
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F05D 2200/00
Mathematical features
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F05D 2200/10
.
Basic functions
F05D 2200/11
. .
Sum
F05D 2200/12
. .
Subtraction
F05D 2200/13
. .
Product
F05D 2200/14
. .
Division
F05D 2200/15
. .
Inverse
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F05D 2200/20
.
Special functions
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F05D 2200/21
. .
Root
F05D 2200/211
. . .
Square root
F05D 2200/212
. . .
Cubic root
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F05D 2200/22
. .
Power
F05D 2200/221
. . .
Square power
F05D 2200/222
. . .
Cubic power
F05D 2200/23
. .
Logarithm
F05D 2200/24
. .
exponential
F05D 2200/25
. .
Hyperbolic trigonometric, e.g. sinh, cosh, tanh
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F05D 2200/26
. .
trigonometric
F05D 2200/261
. . .
Sine
F05D 2200/262
. . .
Cosine
F05D 2200/263
. . .
Tangent
F05D 2200/264
. . .
Cotangent
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F05D 2200/30
.
miscellaneous
F05D 2200/31
. .
odd
F05D 2200/32
. .
even
F05D 2200/33
. .
bigger or smaller
F05D 2200/34
. .
biggest or smallest
F05D 2200/35
. .
first
F05D 2200/36
. .
last
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F05D 2210/00
Working fluids
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F05D 2210/10
.
Kind or type
F05D 2210/11
. .
liquid, i.e. incompressible
F05D 2210/12
. .
gaseous, i.e. compressible
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F05D 2210/13
. .
mixed, e.g. two-phase fluid
F05D 2210/132
. . .
Pumps with means for separating and evacuating the gaseous phase
F05D 2210/14
. .
Refrigerants with particular properties, e.g. HFC
F05D 2210/20
.
Properties
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F05D 2210/30
.
Flow characteristics
F05D 2210/31
. .
with Mach-number kept constant along the flow
F05D 2210/32
. .
Pressure kept constant along the flow
F05D 2210/33
. .
Turbulent flow
F05D 2210/34
. .
Laminar flow
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F05D 2210/40
.
Flow geometry or direction
F05D 2210/41
. .
upwards due to the buoyancy of compressed air
F05D 2210/42
. .
Axial inlet and radial outlet
F05D 2210/43
. .
Radial inlet and axial outlet
F05D 2210/44
. .
bidirectional, i.e. in opposite, alternating directions
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F05D 2220/00
Application
F05D 2220/10
.
in ram-jet engines or ram-jet driven vehicles
F05D 2220/20
.
within closed fluid conduits, e.g. pipes
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F05D 2220/30
.
in turbines
F05D 2220/31
. .
in steam turbines
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F05D 2220/32
. .
in gas turbines
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F05D 2220/321
. . .
for a special turbine stage
F05D 2220/3212
. . . .
the first stage of a turbine
F05D 2220/3213
. . . .
an intermediate stage of the turbine
F05D 2220/3215
. . . .
the last stage of the turbine
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F05D 2220/3216
. . . .
for a special compressor stage
F05D 2220/3217
. . . . .
for the first stage of a compressor or a low pressure compressor
F05D 2220/3218
. . . . .
for an intermediate stage of a compressor
F05D 2220/3219
. . . . .
for the last stage of a compressor or a high pressure compressor
F05D 2220/323
. . .
for aircraft propulsion, e.g. jet engines
F05D 2220/324
. . .
to drive unshrouded, low solidity propeller
F05D 2220/325
. . .
to drive unshrouded, high solidity propeller
F05D 2220/326
. . .
to drive shrouded, low solidity propeller
F05D 2220/327
. . .
to drive shrouded, high solidity propeller
F05D 2220/328
. . .
providing direct vertical lift
F05D 2220/329
. . .
in helicopters
F05D 2220/34
. .
in ram-air turbines ("RATS")
F05D 2220/36
. .
specially adapted for the fan of turbofan engines
F05D 2220/40
.
in turbochargers
F05D 2220/50
.
for auxiliary power units (APU's)
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F05D 2220/60
.
making use of surplus or waste energy
F05D 2220/62
. .
with energy recovery turbines
F05D 2220/64
. .
for domestic central heating or production of electricity
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F05D 2220/70
.
in combination with
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F05D 2220/72
. .
a steam turbine
F05D 2220/722
. . .
as part of an integrated gasification combined cycle
F05D 2220/74
. .
a gas turbine
F05D 2220/75
. .
equipment using fuel having a low calorific value, e.g. low BTU fuel, waste end, syngas, biomass fuel or flare gas
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F05D 2220/76
. .
an electrical generator
F05D 2220/762
. . .
of the direct current (D.C.) type
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F05D 2220/764
. . .
of the alternating current (A.C.) type
F05D 2220/7642
. . . .
of the synchronous type
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F05D 2220/7644
. . . .
of the asynchronous type, i.e. induction type
F05D 2220/7646
. . . . .
Double fed induction generators (DFIGs)
F05D 2220/766
. . .
via a direct connection, i.e. a gearless transmission
F05D 2220/768
. . .
equipped with permanent magnets
F05D 2220/77
. . .
of the linear type
F05D 2220/80
.
in supersonic vehicles excluding hypersonic vehicles or ram, scram or rocket propulsion
F05D 2220/90
.
in vehicles adapted for vertical or short take off and landing (v/stol vehicles)
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F05D 2230/00
Manufacture
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F05D 2230/10
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by removing material
F05D 2230/11
. .
by electrochemical methods
F05D 2230/12
. .
by spark erosion methods
F05D 2230/13
. .
using lasers
F05D 2230/14
. .
Micromachining
F05D 2230/18
. .
Manufacturing tolerances
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F05D 2230/20
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essentially without removing material
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F05D 2230/21
. .
by casting
F05D 2230/211
. . .
by precision casting, e.g. microfusing or investment casting
F05D 2230/22
. .
by sintering
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F05D 2230/23
. .
by permanently joining parts together
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F05D 2230/232
. . .
by welding
F05D 2230/233
. . . .
Electron beam welding
F05D 2230/234
. . . .
Laser welding
F05D 2230/235
. . . .
TIG or MIG welding
F05D 2230/236
. . . .
Diffusion bonding
F05D 2230/237
. . . .
Brazing
F05D 2230/238
. . . .
Soldering
F05D 2230/239
. . . .
Inertia or friction welding
F05D 2230/24
. .
by extrusion
F05D 2230/25
. .
by forging
F05D 2230/26
. .
by rolling
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F05D 2230/30
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with deposition of material
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F05D 2230/31
. .
Layer deposition
F05D 2230/311
. . .
by torch or flame spraying
F05D 2230/312
. . .
by plasma spraying
F05D 2230/313
. . .
by physical vapour deposition
F05D 2230/314
. . .
by chemical vapour deposition
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F05D 2230/40
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Heat treatment
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F05D 2230/41
. .
Hardening; Annealing
F05D 2230/411
. . .
Precipitation hardening
F05D 2230/42
. .
by hot isostatic pressing
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F05D 2230/50
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Building or constructing in particular ways
F05D 2230/51
. .
in a modular way, e.g. using several identical or complementary parts or features
F05D 2230/52
. .
using existing or "off the shelf" parts, e.g. using standardized turbocharger elements
F05D 2230/53
. .
by integrally manufacturing a component, e.g. by milling from a billet or one piece construction
F05D 2230/54
. .
by sheet metal manufacturing
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F05D 2230/60
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Assembly methods
F05D 2230/61
. .
using limited numbers of standard modules which can be adapted by machining
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F05D 2230/64
. .
using positioning or alignment devices for aligning or centring, e.g. pins
F05D 2230/642
. . .
using maintaining alignment while permitting differential dilatation
F05D 2230/644
. . .
for adjusting the position or the alignment, e.g. wedges or eccenters
F05D 2230/68
. .
using auxiliary equipment for lifting or holding
F05D 2230/70
.
Disassembly methods
F05D 2230/72
.
Maintenance
F05D 2230/80
.
Repairing, retrofitting or upgrading methods
F05D 2230/90
.
Coating; Surface treatment (manufacture with deposition of material F05D 2230/30)
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F05D 2240/00
Components
NOTE
-
Components are the basic elements of construction

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F05D 2240/10
.
Stators
F05D 2240/11
. .
Shroud seal segments
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F05D 2240/12
. .
Fluid guiding means, e.g. vanes
F05D 2240/121
. . .
related to the leading edge of a stator vane
F05D 2240/122
. . .
related to the trailing edge of a stator vane
F05D 2240/123
. . .
related to the pressure side of a stator vane
F05D 2240/124
. . .
related to the suction side of a stator vane
F05D 2240/125
. . .
related to the tip of a stator vane
F05D 2240/126
. . .
Baffles or ribs
F05D 2240/127
. . .
Vortex generators, turbulators, or the like, for mixing (by creating turbulence F05D 2260/2212)
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F05D 2240/128
. . .
Nozzles
F05D 2240/1281
. . . .
Plug nozzles
F05D 2240/129
. . .
Cascades, i.e. assemblies of similar profiles acting in parallel
F05D 2240/14
. .
Casings or housings protecting or supporting assemblies within
F05D 2240/15
. .
Heat shield
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F05D 2240/20
.
Rotors
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F05D 2240/24
. .
for turbines
F05D 2240/241
. . .
of impulse type
F05D 2240/242
. . .
of reaction type
F05D 2240/243
. . .
of the Archimedes screw type
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F05D 2240/30
. .
Characteristics of rotor blades, i.e. of any element transforming dynamic fluid energy to or from rotational energy and being attached to a rotor
F05D 2240/301
. . .
Cross-sectional characteristics
F05D 2240/302
. . .
characteristics related to shock waves, transonic or supersonic flow
F05D 2240/303
. . .
related to the leading edge of a rotor blade
F05D 2240/304
. . .
related to the trailing edge of a rotor blade
F05D 2240/305
. . .
related to the pressure side of a rotor blade
F05D 2240/306
. . .
related to the suction side of a rotor blade
F05D 2240/307
. . .
related to the tip of a rotor blade
F05D 2240/31
. . .
with roughened surfaces
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F05D 2240/35
.
Combustors or associated equipment
F05D 2240/36
. .
Fuel vaporizer
F05D 2240/40
.
Use of a multiplicity of similar components
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F05D 2240/50
.
Bearings
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F05D 2240/51
. .
Magnetic
F05D 2240/511
. . .
with permanent magnets
F05D 2240/515
. . .
Electromagnetic
F05D 2240/52
. .
Axial thrust bearings
F05D 2240/53
. .
Hydrodynamic or hydrostatic bearings
F05D 2240/54
. .
Radial bearings
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F05D 2240/55
.
Seals
F05D 2240/56
. .
Brush seals
F05D 2240/57
. .
Leaf seals
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F05D 2240/58
. .
Piston ring seals
F05D 2240/581
. . .
Double or plural piston ring arrangements, i.e. two or more piston rings
F05D 2240/59
. .
Lamellar seals
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F05D 2240/60
.
Shafts
F05D 2240/61
. .
Hollow
F05D 2240/62
. .
Flexible
F05D 2240/63
. .
Glands for admission or removal of fluids from shafts
F05D 2240/70
.
Slinger plates or washers
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F05D 2240/80
.
Platforms for stationary or moving blades
F05D 2240/81
. .
Cooled platforms
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F05D 2240/90
.
Mounting on supporting structures or systems
F05D 2240/91
. .
on a stationary structure
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F05D 2250/00
Geometry
NOTE
-
Geometry indicates the shape or form of a component or the configuration or arrangement of components in a machine or in a plant

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F05D 2250/10
.
Two-dimensional
F05D 2250/11
. .
triangular
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F05D 2250/12
. .
rectangular
F05D 2250/121
. . .
square
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F05D 2250/13
. .
trapezoidal
F05D 2250/131
. . .
polygonal
F05D 2250/132
. . .
hexagonal
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F05D 2250/14
. .
elliptical
F05D 2250/141
. . .
circular
F05D 2250/15
. .
spiral
F05D 2250/16
. .
parabolic
F05D 2250/17
. .
hyperbolic
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F05D 2250/18
. .
patterned
F05D 2250/181
. . .
ridged
F05D 2250/182
. . .
crenellated, notched
F05D 2250/183
. . .
zigzag
F05D 2250/184
. . .
sinusoidal
F05D 2250/185
. . .
serpentine-like
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F05D 2250/19
. .
machined; miscellaneous
F05D 2250/191
. . .
perforated
F05D 2250/192
. . .
bevelled
F05D 2250/193
. . .
milled
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F05D 2250/20
.
Three-dimensional
F05D 2250/21
. .
pyramidal
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F05D 2250/22
. .
parallelepipedal
F05D 2250/221
. . .
cubic
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F05D 2250/23
. .
prismatic
F05D 2250/231
. . .
cylindrical
F05D 2250/232
. . .
conical
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F05D 2250/24
. .
ellipsoidal
F05D 2250/241
. . .
spherical
F05D 2250/25
. .
helical
F05D 2250/26
. .
paraboloid
F05D 2250/27
. .
hyperboloid
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F05D 2250/28
. .
patterned
F05D 2250/281
. . .
threaded
F05D 2250/282
. . .
cubic pattern
F05D 2250/283
. . .
honeycomb
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F05D 2250/29
. .
machined; miscellaneous
F05D 2250/291
. . .
hollowed
F05D 2250/292
. . .
tapered
F05D 2250/293
. . .
lathed, e.g. rotation symmetrical
F05D 2250/294
. . .
grooved
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F05D 2250/30
.
Arrangement of components
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F05D 2250/31
. .
according to the direction of their main axis or their axis of rotation
F05D 2250/311
. . .
the axes being in line
F05D 2250/312
. . .
the axes being parallel to each other
F05D 2250/313
. . .
the axes being perpendicular to each other
F05D 2250/314
. . .
the axes being inclined in relation to each other
F05D 2250/315
. . .
the main axis being substantially vertical
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F05D 2250/32
. .
according to their shape
F05D 2250/321
. . .
asymptotic
F05D 2250/322
. . .
tangential
F05D 2250/323
. . .
convergent
F05D 2250/324
. . .
divergent
F05D 2250/33
. .
symmetrical
F05D 2250/34
. .
translated
F05D 2250/35
. .
rotated
F05D 2250/36
. .
in inner-outer relationship, e.g. shaft-bearing arrangements
F05D 2250/37
. .
circumferential
F05D 2250/38
. .
angled, e.g. sweep angle
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F05D 2250/40
.
Movement of components
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F05D 2250/41
. .
with one degree of freedom
F05D 2250/411
. . .
in rotation
F05D 2250/42
. .
with two degrees of freedom
F05D 2250/43
. .
with three degrees of freedom
F05D 2250/44
. .
by counter rotation
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F05D 2250/50
.
Inlet or outlet
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F05D 2250/51
. .
Inlet
F05D 2250/511
. . .
augmenting, i.e. with intercepting fluid flow cross sectional area greater than the rest of the machine behind the inlet
F05D 2250/512
. . .
concentrating only, i.e. with intercepting fluid flow cross sectional area not greater than the rest of the machine behind the inlet
F05D 2250/52
. .
Outlet
F05D 2250/53
. .
of regenerative pumps
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F05D 2250/60
.
Structure; Surface texture
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F05D 2250/61
. .
corrugated
F05D 2250/611
. . .
undulated
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F05D 2250/62
. .
smooth or fine
F05D 2250/621
. . .
polished
F05D 2250/63
. .
coarse
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F05D 2250/70
.
Shape
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F05D 2250/71
. .
curved
F05D 2250/711
. . .
convex
F05D 2250/712
. . .
concave
F05D 2250/713
. . .
inflexed
F05D 2250/72
. .
symmetric
F05D 2250/73
. .
asymmetric
F05D 2250/74
. .
given by a set or table of xyz-coordinates
F05D 2250/75
. .
given by its similarity to a letter, e.g. T-shaped
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F05D 2250/80
.
Size or power range of the machines
F05D 2250/82
. .
Micromachines
F05D 2250/84
. .
Nanomachines
F05D 2250/90
.
Variable geometry
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F05D 2260/00
Function
F05D 2260/02
.
Transport and handling during maintenance and repair
F05D 2260/10
.
Particular cycles
F05D 2260/12
.
Testing on a test bench
F05D 2260/14
.
Preswirling
F05D 2260/15
.
Load balancing
F05D 2260/16
.
Fluid modulation at a certain frequency
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F05D 2260/20
.
Heat transfer, e.g. cooling
F05D 2260/201
. .
by impingement of a fluid
F05D 2260/202
. .
by film cooling
F05D 2260/203
. .
by transpiration cooling
F05D 2260/204
. .
by the use of microcircuits
F05D 2260/205
. .
Cooling fluid recirculation, i.e. after cooling one or more components is the cooling fluid recovered and used elsewhere for other purposes
F05D 2260/207
. .
using a phase changing mass, e.g. heat absorbing by melting or boiling
F05D 2260/208
. .
using heat pipes
F05D 2260/209
. .
using vortex tubes
F05D 2260/211
. .
by intercooling, e.g. during a compression cycle
F05D 2260/212
. .
by water injection
F05D 2260/213
. .
by the provision of a heat exchanger within the cooling circuit
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F05D 2260/221
. .
Improvement of heat transfer
F05D 2260/2212
. . .
by creating turbulence (vortex generators, turbulators or the like for mixing F05D 2240/127)
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F05D 2260/2214
. . .
by increasing the heat transfer surface
F05D 2260/22141
. . . .
using fins or ribs
F05D 2260/231
. .
Preventing heat transfer
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F05D 2260/232
. .
characterized by the cooling medium
F05D 2260/2322
. . .
steam
F05D 2260/234
. .
of the generator by compressor inlet air
F05D 2260/24
. .
for draft enhancement in chimneys, using solar or other heat sources
F05D 2260/30
.
Retaining components in desired mutual position
F05D 2260/31
.
Retaining bolts or nuts
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F05D 2260/311
.
of the frangible or shear type
F05D 2260/32
. .
by means of magnetic or electromagnetic forces
F05D 2260/33
. .
with a bayonet coupling
F05D 2260/34
. .
Balancing of radial or axial forces on regenerative rotors
F05D 2260/35
. .
Reducing friction between regenerative impeller discs and casing walls
F05D 2260/36
. .
by a form fit connection, e.g. by interlocking
F05D 2260/37
. .
by a press fit connection
F05D 2260/38
. .
by a spring, i.e. spring loaded or biased towards a certain position
F05D 2260/39
. .
by a V-shaped ring to join the flanges of two cylindrical sections, e.g. casing sections of a turbocharger
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F05D 2260/40
.
Transmission of power
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F05D 2260/402
. .
through friction drives
F05D 2260/4021
. . .
through belt drives
F05D 2260/4022
. . .
through endless chains
F05D 2260/4023
. . .
through a friction clutch
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F05D 2260/403
. .
through the shape of the drive components
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F05D 2260/4031
. . .
as in toothed gearing
F05D 2260/40311
. . . .
of the epicyclical, planetary or differential type
Collapse
F05D 2260/404
. .
through magnetic drive coupling
F05D 2260/4041
. . .
the driven magnets encircling the driver magnets
F05D 2260/406
. .
through hydraulic systems
F05D 2260/407
. .
through piezoelectric conversion
F05D 2260/408
. .
through magnetohydrodynamic conversion
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F05D 2260/42
.
Storage of energy
F05D 2260/43
. .
in the form of rotational kinetic energy, e.g. in flywheels
Collapse
F05D 2260/50
.
Kinematic linkage, i.e. transmission of position
F05D 2260/52
. .
involving springs
Collapse
F05D 2260/53
. .
using gears
F05D 2260/532
. . .
of the bevelled or angled type
F05D 2260/54
. .
using flat or V-belts and pulleys
F05D 2260/55
. .
using chains and sprockets; using toothed belts
F05D 2260/56
. .
using cams or eccentrics
F05D 2260/57
. .
using servos, independent actuators, etc.
Collapse
F05D 2260/60
.
Fluid transfer
F05D 2260/601
. .
using an ejector or a jet pump
Collapse
F05D 2260/602
. .
Drainage
F05D 2260/6022
. . .
of leakage having past a seal (seals F05D 2240/57; glands F05D 2240/63)
F05D 2260/604
. .
Vortex non-clogging type pumps
F05D 2260/605
. .
Venting into the ambient atmosphere or the like
F05D 2260/606
. .
Bypassing the fluid
F05D 2260/607
. .
Preventing clogging or obstruction of flow paths by dirt, dust, or foreign particles
F05D 2260/608
. .
Aeration, ventilation, dehumidification or moisture removal of closed spaces
F05D 2260/609
. .
Deoiling or demisting
F05D 2260/61
. .
Removal of CO2 (removal of CO2 from waste gases B01D 53/62)
F05D 2260/611
. .
Sequestration of CO2
Collapse
F05D 2260/70
.
Adjusting of angle of incidence or attack of rotating blades
F05D 2260/71
. .
as a function of flow velocity
F05D 2260/72
. .
by turning around an axis parallel to the rotor centre line
F05D 2260/74
. .
by turning around an axis perpendicular the rotor centre line
F05D 2260/75
. .
the adjusting mechanism not using auxiliary power sources, e.g. by "servos"
F05D 2260/76
. .
the adjusting mechanism using auxiliary power sources
F05D 2260/77
. .
the adjusting mechanism driven or triggered by centrifugal forces
F05D 2260/78
. .
the adjusting mechanism driven or triggered by aerodynamic forces
F05D 2260/79
. .
Bearing, support or actuation arrangements therefor
F05D 2260/80
.
Diagnostics
F05D 2260/81
.
Modelling or simulation
Collapse
F05D 2260/82
.
Forecasts
F05D 2260/821
. .
Parameter estimation or prediction
F05D 2260/83
.
Testing, e.g. methods, components or tools therefor
F05D 2260/84
.
Redundancy
F05D 2260/85
.
Starting
Collapse
F05D 2260/90
.
Braking
F05D 2260/901
. .
using aerodynamic forces, i.e. lift or drag
F05D 2260/902
. .
using frictional mechanical forces
F05D 2260/903
. .
using electrical or magnetic forces
F05D 2260/904
. .
using hydrodynamic forces
Collapse
F05D 2260/94
.
Functionality given by mechanical stress related aspects such as low cycle fatigue (LCF) of high cycle fatigue (HCF)
F05D 2260/941
. .
particularly aimed at mechanical or thermal stress reduction
F05D 2260/95
.
Preventing corrosion (coating or surface treatment F05D 2230/90)
Collapse
F05D 2260/96
.
Preventing, counteracting or reducing vibration or noise
F05D 2260/961
. .
by mistuning rotor blades or stator vanes with irregular interblade spacing, airfoil shape
F05D 2260/962
. .
by means of "anti-noise"
F05D 2260/963
. .
by Helmholtz resonators
F05D 2260/964
. .
counteracting thermoacoustic noise
Collapse
F05D 2260/97
.
Reducing windage losses
F05D 2260/972
. .
in radial flow machines
F05D 2260/98
.
Lubrication
F05D 2260/99
.
Ignition, e.g. ignition by warming up of fuel or oxidizer in a resonant acoustic cavity
Collapse
F05D 2270/00
Control
Collapse
F05D 2270/01
.
Purpose of the control system
Collapse
F05D 2270/02
. .
to control rotational speed (n)
F05D 2270/021
. . .
to prevent overspeed
F05D 2270/022
. . .
to prevent underspeed
F05D 2270/023
. . .
of different spools or shafts
F05D 2270/024
. . .
to keep rotational speed constant
F05D 2270/03
. .
in variable speed operation
Collapse
F05D 2270/04
. .
to control acceleration (u)
F05D 2270/042
. . .
by keeping it below damagingly high values
F05D 2270/044
. . .
by making it as high as possible
Collapse
F05D 2270/05
. .
to affect the output of the engine
F05D 2270/051
. . .
Thrust
F05D 2270/052
. . .
Torque
F05D 2270/053
. . .
Explicitly mentioned power
Collapse
F05D 2270/06
. .
to match engine to driven device
F05D 2270/061
. . .
in particular the electrical frequency of driven generator
Collapse
F05D 2270/07
. .
to improve fuel economy
F05D 2270/071
. . .
in particular at idling speed
Collapse
F05D 2270/08
. .
to produce clean exhaust gases
F05D 2270/081
. . .
with as little smoke as possible
F05D 2270/082
. . .
with as little NOx as possible
Collapse
F05D 2270/083
. . .
by monitoring combustion conditions
F05D 2270/0831
. . . .
indirectly, at the exhaust
Collapse
F05D 2270/09
. .
to cope with emergencies
F05D 2270/091
. . .
in particular sudden load loss
F05D 2270/092
. . .
in particular blow-out and relight
F05D 2270/093
. . .
of one engine in a multi-engine system
F05D 2270/094
. . .
by using back-up controls
F05D 2270/095
. . .
by temporary overriding set control limits
F05D 2270/096
. . .
caused by water or hail ingestion
Collapse
F05D 2270/10
. .
to cope with, or avoid, compressor flow instabilities
Collapse
F05D 2270/101
. . .
Compressor surge or stall
Collapse
F05D 2270/102
. . . .
caused by working fluid flow velocity profile distortion
F05D 2270/1022
. . . . .
due to high angle of attack of aircraft
F05D 2270/1024
. . . . .
due to compressor degradation
Collapse
F05D 2270/11
. .
to prolong engine life
F05D 2270/112
. . .
by limiting temperatures
F05D 2270/114
. . .
by limiting mechanical stresses
F05D 2270/116
. . .
by preventing reverse rotation
Collapse
F05D 2270/12
. .
to maintain desired vehicle trajectory parameters
F05D 2270/121
. . .
Altitude
F05D 2270/122
. . .
Speed or Mach number
F05D 2270/13
. .
to control two or more engines simultaneously
F05D 2270/14
. .
to control thermoacoustic behaviour in the combustion chambers (counteracting noise or vibration F05D 2260/96)
F05D 2270/16
. .
to control water or steam injection
Collapse
F05D 2270/17
. .
to control boundary layer
F05D 2270/172
. . .
by a plasma generator, e.g. control of ignition
F05D 2270/173
. . .
by the Coanda effect
F05D 2270/18
. .
using fluidic amplifiers or actuators
F05D 2270/20
. .
to optimize the performance of a machine
Collapse
F05D 2270/30
.
Control parameters, e.g. input parameters
Collapse
F05D 2270/301
. .
Pressure
F05D 2270/3011
. . .
Inlet pressure
F05D 2270/3013
. . .
Outlet pressure
F05D 2270/3015
. . .
differential pressure
Collapse
F05D 2270/303
. .
Temperature
F05D 2270/3032
. . .
excessive temperatures, e.g. caused by overheating
F05D 2270/304
. .
Spool rotational speed
F05D 2270/305
. .
Tolerances
Collapse
F05D 2270/306
. .
Mass flow
F05D 2270/3061
. . .
of the working fluid
F05D 2270/3062
. . .
of the auxiliary fluid for heating or cooling purposes
F05D 2270/309
. .
Rate of change of parameters
F05D 2270/31
. .
Fuel schedule for stage combustors
F05D 2270/311
. .
Air humidity
F05D 2270/312
. .
Air pressure
F05D 2270/313
. .
Air temperature
F05D 2270/331
. .
Mechanical loads
F05D 2270/332
. .
Maximum loads or fatigue criteria
F05D 2270/333
. .
Noise or sound levels
F05D 2270/334
. .
Vibration measurements
F05D 2270/335
. .
Output power or torque
F05D 2270/336
. .
Blade lift measurements
Collapse
F05D 2270/40
.
Type of control system
F05D 2270/42
. .
passive or reactive, e.g. using large wind vanes
F05D 2270/44
. .
active, predictive, or anticipative
F05D 2270/46
. .
redundant, i.e. failsafe operation
Collapse
F05D 2270/50
.
Control logic embodiments
F05D 2270/52
. .
by electrical means, e.g. relays or switches
F05D 2270/54
. .
by electronic means, e.g. electronic tubes, transistors or IC`s within an electronic circuit
F05D 2270/56
. .
by hydraulic means, e.g. hydraulic valves within a hydraulic circuit
F05D 2270/58
. .
by mechanical means, e.g. levers, gears or cams
Collapse
F05D 2270/60
.
Control system actuates means
F05D 2270/62
. .
Electrical actuators
F05D 2270/64
. .
Hydraulic actuators
F05D 2270/65
. .
Pneumatic actuators
F05D 2270/66
. .
Mechanical actuators (F05D 2270/62 takes precedence)
Collapse
F05D 2270/70
.
Type of control algorithm
F05D 2270/701
. .
proportional
F05D 2270/702
. .
differential
F05D 2270/703
. .
integral
F05D 2270/704
. .
proportional-differential
F05D 2270/705
. .
proportional-integral
F05D 2270/706
. .
proportional-integral-differential
F05D 2270/707
. .
fuzzy logic
F05D 2270/708
. .
with comparison tables
F05D 2270/709
. .
with neural networks
F05D 2270/71
. .
synthesized, i.e. parameter computed by a mathematical model
Collapse
F05D 2270/80
.
Devices generating input signals, e.g. transducers, sensors, cameras or strain gauges
F05D 2270/802
. .
Calibration thereof
F05D 2270/803
. .
Sampling thereof
Collapse
F05D 2270/804
. .
Optical devices
F05D 2270/8041
. . .
Cameras
F05D 2270/805
. .
Radars
F05D 2270/806
. .
Sonars
F05D 2270/807
. .
Accelerometers
F05D 2270/808
. .
Strain gauges; Load cells
F05D 2270/809
. .
Encoders
F05D 2270/81
. .
Microphones
F05D 2270/821
. .
Displacement measuring means, e.g. inductive
F05D 2280/00
F05D 2290/00
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F05D 2300/00
Materials; Properties thereof
Collapse
F05D 2300/10
.
Metals, alloys or intermetallic compounds
Collapse
F05D 2300/11
. .
Iron
F05D 2300/111
. . .
Cast iron
Collapse
F05D 2300/12
. .
Light metals
F05D 2300/121
. . .
Aluminium
F05D 2300/122
. . .
Beryllium
F05D 2300/123
. . .
Boron
F05D 2300/124
. . .
Lithium
F05D 2300/125
. . .
Magnesium
Collapse
F05D 2300/13
. .
Refractory metals, i.e. Ti, V, Cr, Zr, Nb, Mo, Hf, Ta, W
F05D 2300/131
. . .
Molybdenum
F05D 2300/132
. . .
Chromium
F05D 2300/133
. . .
Titanium
F05D 2300/134
. . .
Zirconium
F05D 2300/135
. . .
Hafnium
Collapse
F05D 2300/14
. .
Noble metals, i.e. Ag, Au, platinum group metals
F05D 2300/141
. . .
Silver
F05D 2300/142
. . .
Gold
Collapse
F05D 2300/143
. . .
Platinum group metals, i.e. Os, Ir, Pt, Ru, Rh, Pd
F05D 2300/1431
. . . .
Palladium
F05D 2300/1432
. . . .
Ruthenium
F05D 2300/1433
. . . .
Osmium
F05D 2300/1434
. . . .
Iridium
F05D 2300/1435
. . . .
Rhodium
F05D 2300/15
. .
Rare earth metals, i.e. Sc, Y, lanthanides
Collapse
F05D 2300/16
. .
Other metals not provided for in groups F05D 2300/11 to F05D 2300/15
F05D 2300/1602
. . .
Arsenic
F05D 2300/1604
. . .
Antimony
F05D 2300/1606
. . .
Bismuth
F05D 2300/1608
. . .
Barium
F05D 2300/161
. . .
Manganese
F05D 2300/1612
. . .
Lead
F05D 2300/1614
. . .
Tin
F05D 2300/1616
. . .
Zinc
F05D 2300/1618
. . .
Mercury
Collapse
F05D 2300/17
. .
Alloys
F05D 2300/171
. . .
Steel alloys
Collapse
F05D 2300/172
. . .
Copper alloys
F05D 2300/1721
. . . .
Bronze
F05D 2300/1722
. . . .
Phosphor-bronze alloy
F05D 2300/1723
. . . .
Nickel-Copper alloy, e.g. Monel
F05D 2300/173
. . .
Aluminium alloys, e.g. AlCuMgPb
F05D 2300/174
. . .
Titanium alloys, e.g. TiAl
F05D 2300/175
. . .
Superalloys
F05D 2300/176
. . .
Heat-stable alloys
F05D 2300/177
. . .
Ni - Si alloys
Collapse
F05D 2300/18
. .
Intermetallic compounds
F05D 2300/182
. . .
Metal-aluminide intermetallic compounds
Collapse
F05D 2300/20
.
Oxide or non-oxide ceramics
Collapse
F05D 2300/21
. .
Oxide ceramics
F05D 2300/2102
. . .
Glass
F05D 2300/2104
. . .
MIBA
F05D 2300/2106
. . .
Quartz
F05D 2300/2108
. . .
Phosphor
F05D 2300/211
. . .
Silica
F05D 2300/2112
. . .
Aluminium oxides
F05D 2300/2114
. . .
Sapphire
F05D 2300/2116
. . .
Zinc oxide
F05D 2300/2118
. . .
Zirconium oxides
F05D 2300/212
. . .
Aluminium titanate
Collapse
F05D 2300/22
. .
Non-oxide ceramics
F05D 2300/222
. . .
Silicon
F05D 2300/224
. . .
Carbon, e.g. graphite
Collapse
F05D 2300/226
. . .
Carbides
F05D 2300/2261
. . . .
of silicon
F05D 2300/2262
. . . .
of titanium, e.g. TiC
F05D 2300/2263
. . . .
of tungsten, e.g. WC
Collapse
F05D 2300/228
. . .
Nitrides
F05D 2300/2281
. . . .
of aluminium
F05D 2300/2282
. . . .
of boron
F05D 2300/2283
. . . .
of silicon
F05D 2300/2284
. . . .
of titanium
F05D 2300/2285
. . . .
of zirconium
Collapse
F05D 2300/229
. . .
Sulfides
F05D 2300/2291
. . . .
of molybdenum
F05D 2300/30
.
Inorganic materials other than provided for in groups F05D 2300/10 to F05D 2300/2291
Collapse
F05D 2300/40
.
Organic materials
F05D 2300/41
. .
Leather
F05D 2300/42
. .
Cellulosic materials, e.g. wood
Collapse
F05D 2300/43
. .
Synthetic polymers, e.g. plastics; Rubber
F05D 2300/431
. . .
Rubber
F05D 2300/432
. . .
PTFE (PolyTetraFluorEthylene)
F05D 2300/433
. . .
Polyamides, e.g. NYLON
F05D 2300/434
. . .
Polyimides, e.g. AURUM
F05D 2300/436
. . .
Polyetherketones, e.g. PEEK
F05D 2300/437
. . .
Silicon polymers
F05D 2300/44
. .
Resins
F05D 2300/48
. .
other organic materials
Collapse
F05D 2300/50
.
Intrinsic material properties or characteristics
F05D 2300/501
. .
Elasticity
Collapse
F05D 2300/502
. .
Thermal properties
Collapse
F05D 2300/5021
. . .
Expansivity
F05D 2300/50211
. . . .
similar
F05D 2300/50212
. . . .
dissimilar
F05D 2300/5023
. . .
Thermal capacity
F05D 2300/5024
. . .
Heat conductivity
F05D 2300/504
. .
Reflective properties
F05D 2300/505
. .
Shape memory behaviour
F05D 2300/506
. .
Hardness
F05D 2300/507
. .
Magnetic properties
F05D 2300/509
. .
Self lubricating materials; Solid lubricants
F05D 2300/51
. .
Hydrophilic, i.e. being or having wettable properties
F05D 2300/512
. .
Hydrophobic, i.e. being or having non-wettable properties
F05D 2300/514
. .
Porosity
F05D 2300/516
. .
Surface roughness
F05D 2300/518
. .
Ductility
F05D 2300/52
. .
Translucence
F05D 2300/522
. .
Density
Collapse
F05D 2300/60
.
Properties or characteristics given to material by treatment or manufacturing
Collapse
F05D 2300/601
. .
Fabrics
F05D 2300/6012
. . .
Woven fabrics
Collapse
F05D 2300/603
. .
Composites; e.g. fibre-reinforced
F05D 2300/6031
. . .
Functionally graded composites
F05D 2300/6032
. . .
Metal matrix composites (MMC)
F05D 2300/6033
. . .
Ceramic matrix composites (CMC)
F05D 2300/6034
. . .
Orientation of fibres, weaving, ply angle
F05D 2300/604
. .
Amorphous
F05D 2300/605
. .
Crystalline
F05D 2300/606
. .
Directionally-solidified crystalline structures
F05D 2300/607
. .
Monocrystallinity
F05D 2300/608
. .
Microstructure
F05D 2300/609
. .
Grain size
F05D 2300/61
. .
Syntactic materials, i.e. hollow spheres embedded in a matrix
F05D 2300/611
. .
Coating
F05D 2300/6111
. .
functionally graded coating
F05D 2300/612
. .
Foam
F05D 2300/613
. .
Felt
F05D 2300/614
. .
Fibres or filaments
F05D 2300/615
. .
Filler
Collapse
F05D 2300/70
.
Treatment or modification of materials
F05D 2300/701
. .
Heat treatment
F05D 2300/702
. .
Reinforcement
This page is owned by Office of Patent Classification.
Last Modified: 10/10/2013