F
SECTION F — MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  
ENGINES OR PUMPS
 F02
COMBUSTION ENGINES (cyclically operating valves therefor, lubricating, exhausting, or silencing engines F01); HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
 F02C
GAS-TURBINE PLANTS; AIR INTAKES FOR JET-PROPULSION PLANTS; CONTROLLING FUEL SUPPLY IN AIR-BREATHING JET-PROPULSION PLANTS (construction of turbines F01D; jet-propulsion plants F02K; construction of compressors or fans F04; gas-turbine combustion chambers F23R; using gas turbines in compression refrigeration plants F25B 11/00; using gas-turbine plants in vehicles, see the relevant vehicle classes)
 F02C

Note(s)

  1. This subclass covers:
    • combustion product or hot gas turbine plants;
    • internal combustion turbines or turbine plants;
    • turbine plants in which the working fluid is an unheated, pressurised gas.
  2. This subclass does not cover:
  3. In this subclass, the following expression is used with the meaning indicated:
    • "gas-turbine plants" covers all the subject matter of Note (1) above and covers also features of jet-propulsion plants common to gas-turbine plants.
  4. Attention is drawn to the Notes preceding class F01.
 F02C 1/00
Gas-turbine plants characterised by the use of hot gases or unheated pressurised gases, as the working fluid (by the use of combustion products F02C 3/00, F02C 5/00)  [3]
 F02C 1/02
·  the working fluid being an unheated pressurised gas  [3]
 F02C 1/04
·  the working fluid being heated indirectly  [3]
 F02C 1/05
·  ·  characterised by the type or source of heat, e.g. using nuclear or solar energy  [3]
 F02C 1/06
·  ·  ·  using reheated exhaust gas (F02C 1/08 takes precedence)  [3]
 F02C 1/08
·  ·  Semi-closed cycles  [3]
 F02C 1/10
·  ·  Closed cycles  [3]
 F02C 3/00
Gas-turbine plants characterised by the use of combustion products as the working fluid (generated by intermittent combustion F02C 5/00)
 F02C 3/02
·  using exhaust-gas pressure in a pressure exchanger to compress combustion-air (pressure exchangers per se F04F 11/02)
 F02C 3/04
·  having a turbine driving a compressor
 F02C 3/045
·  ·  having compressor and turbine passages in a single rotor F02C 3/073 takes precedence)  [3]
 F02C 3/05
·  ·  ·  the compressor and the turbine being of the radial flow type  [3]
 F02C 3/055
·  ·  the compressor being of the positive-displacement type  [3]
 F02C 3/06
·  ·  the compressor comprising only axial stages (F02C 3/10 takes precedence)  [3]
 F02C 3/067
·  ·  ·  having counter-rotating rotors (F02C 3/073 takes precedence)  [3]
 F02C 3/073
·  ·  ·  the compressor and turbine stages being concentric  [3]
 F02C 3/08
·  ·  the compressor comprising at least one radial stage (F02C 3/10 takes precedence)  [3]
 F02C 3/09
·  ·  ·  of the centripetal type  [3]
 F02C 3/10
·  ·  with another turbine driving output shaft but not driving the compressor
 F02C 3/14
·  characterised by the arrangement of the combustion chamber in the plant (combustion chambers per se F23R)  [3]
 F02C 3/16
·  ·  the combustion chambers being formed at least partly in the turbine rotor
 F02C 3/20
·  using a special fuel, oxidant, or dilution fluid to generate the combustion products  [3]
 F02C 3/22
·  ·  the fuel or oxidant being gaseous at standard temperature and pressure (F02C 3/28 takes precedence)  [3]
 F02C 3/24
·  ·  the fuel or oxidant being liquid at standard temperature and pressure  [3]
 F02C 3/26
·  ·  the fuel or oxidant being solid or pulverulent, e.g. in slurry or suspension
 F02C 3/28
·  ·  ·  using a separate gas producer for gasifying the fuel before combustion  [3]
 F02C 3/30
·  ·  Adding water, steam or other fluids to the combustible ingredients or to the working fluid before discharge from the turbine (heating of air intakes to prevent icing F02C 7/047)  [3]
 F02C 3/32
·  Inducing air flow by fluid jet, e.g. ejector action  [3]
 F02C 3/34
·  with recycling of part of the working fluid, i.e. semi-closed cycles with combustion products in the closed part of the cycle  [3]
 F02C 3/36
·  Open cycles  [3]
 F02C 5/00
Gas-turbine plants characterised by the working fluid being generated by intermittent combustion
 F02C 5/02
·  characterised by the arrangement of the combustion chamber in the plant (combustion chambers per se F23R)  [3]
 F02C 5/04
·  ·  the combustion chambers being formed at least partly in the turbine rotor
 F02C 5/06
·  the working fluid being generated in an internal-combustion gas generator of the positive-displacement type having essentially no mechanical power output (internal-combustion engines with prolonged expansion using exhaust gas turbines F02B)
 F02C 5/08
·  ·  the gas generator being of the free-piston type
 F02C 5/10
·  the working fluid forming a resonating or oscillating gas column, i.e. the combustion chambers having no positively actuated valves, e.g. using Helmholtz effect  [3]
 F02C 5/11
·  ·  using valveless combustion chambers  [3]
 F02C 5/12
·  the combustion chambers having inlet or outlet valves, e.g. Holzwarth gas-turbine plants
 F02C 6/00
Plural gas-turbine plants; Combinations of gas-turbine plants with other apparatus (aspects predominantly concerning such apparatus, see the relevant classes for the apparatus); Adaptations of gas-turbine plants for special use  [3]
 F02C 6/02
·  Plural gas-turbine plants having a common power output  [3]
 F02C 6/04
·  Gas-turbine plants providing heated or pressurised working fluid for other apparatus, e.g. without mechanical power output (F02C 6/18 takes precedence)  [3]
 F02C 6/06
·  ·  providing compressed gas (F02C 6/10 takes precedence)  [3]
 F02C 6/08
·  ·  ·  the gas being bled from the gas-turbine compressor  [3]
 F02C 6/10
·  ·  supplying working fluid to a user, e.g. a chemical process, which returns working fluid to a turbine of the plant  [3]
 F02C 6/12
·  ·  ·  Turbochargers, i.e. plants for augmenting mechanical power output of internal-combustion piston engines by increase of charge pressure  [3]
 F02C 6/14
·  Gas-turbine plants having means for storing energy, e.g. for meeting peak loads  [3]
 F02C 6/16
·  ·  for storing compressed air  [3]
 F02C 6/18
·  using the waste heat of gas-turbine plants outside the plants themselves, e.g. gas-turbine power heat plants (using waste heat as source of energy for refrigeration plants F25B 27/02)  [3]
 F02C 6/20
·  Adaptations of gas-turbine plants for driving vehicles  [3]
 F02C 7/00
Features, component parts, details or accessories, not provided for in, or of interest apart from, groups F02C 1/00-F02C 6/00; Air intakes for jet-propulsion plants (controlling F02C 9/00)  [3]
 F02C 7/04
·  Air intakes for gas-turbine plants or jet-propulsion plants  [3]
 F02C 7/042
·  ·  having variable geometry  [3]
 F02C 7/045
·  ·  having provisions for noise suppression  [3]
 F02C 7/047
·  ·  Heating to prevent icing  [3]
 F02C 7/05
·  ·  having provisions for obviating the penetration of damaging objects or particles  [3]
 F02C 7/052
·  ·  ·  with dust-separation devices  [3]
 F02C 7/055
·  ·  ·  with intake grids, screens or guards  [3]
 F02C 7/057
·  ·  Control or regulation (conjointly with fuel supply control F02C 9/50, with nozzle area control F02K 1/16)  [3]
 F02C 7/06
·  Arrangement of bearings (bearings F16C); Lubricating (of engines in general F01M)  [3]
 F02C 7/08
·  Heating air supply before combustion, e.g. by exhaust gases
 F02C 7/10
·  ·  by means of regenerative heat-exchangers
 F02C 7/105
·  ·  ·  of the rotary type (rotary heat exchangers per se F28)  [3]
 F02C 7/12
·  Cooling of plants (of component parts per se, see the relevant subclasses, e.g. F01D; cooling of engines in general F01P)
 F02C 7/14
·  ·  of fluids in the plant
 F02C 7/141
·  ·  ·  of working fluid (F02C 3/30 takes precedence)  [3]
 F02C 7/143
·  ·  ·  ·  before or between the compressor stages  [3]
 F02C 7/16
·  ·  characterised by cooling medium
 F02C 7/18
·  ·  ·  the medium being gaseous, e.g. air
 F02C 7/20
·  Mounting or supporting of plant; Accommodating heat expansion or creep
 F02C 7/22
·  Fuel supply systems
 F02C 7/224
·  ·  Heating fuel before feeding to the burner  [3]
 F02C 7/228
·  ·  Dividing fuel between various burners  [3]
 F02C 7/232
·  ·  Fuel valves; Draining valves or systems (valves in general F16K)  [3]
 F02C 7/236
·  ·  Fuel delivery systems comprising two or more pumps  [3]
 F02C 7/24
·  Heat or noise insulation (air intakes having provisions for noise suppression F02C 7/045; turbine exhaust heads, chambers, or the like F01D 25/30; silencing nozzles of jet-propulsion plants F02K 1/00)  [3]
 F02C 7/25
·  ·  Fire protection or prevention (in general A62)  [3]
 F02C 7/26
·  Starting; Ignition
 F02C 7/262
·  ·  Restarting after flame-out  [3]
 F02C 7/264
·  ·  Ignition  [3]
 F02C 7/266
·  ·  ·  Electric (sparking plugs H01T)  [3]
 F02C 7/268
·  ·  Starting drives for the rotor  [3]
 F02C 7/27
·  ·  ·  Fluid drives (turbine starters F02C 7/277)  [3]
 F02C 7/272
·  ·  ·  ·  generated by cartridges  [3]
 F02C 7/275
·  ·  ·  Mechanical drives  [3]
 F02C 7/277
·  ·  ·  ·  the starter being a turbine  [3]
 F02C 7/28
·  Arrangement of seals
 F02C 7/30
·  Preventing corrosion in gas-swept spaces
 F02C 7/32
·  Arrangement, mounting, or driving, of auxiliaries
 F02C 7/36
·  Power transmission between the different shafts of the gas-turbine plant, or between the gas-turbine plant and the power user (F02C 7/32 takes precedence; couplings in general F16D; gearing in general F16H)  [3]
 F02C 9/00
Controlling gas-turbine plants; Controlling fuel supply in air-breathing jet-propulsion plants (controlling air intakes F02C 7/057; controlling turbines F01D; controlling compressors F04D 27/00; controlling in general G05)  [3]
 F02C 9/16
·  Control of working fluid flow (F02C 9/48 takes precedence; control of air-intake flow F02C 7/057)  [3]
 F02C 9/18
·  ·  by bleeding or by-passing  [3]
 F02C 9/20
·  ·  by throttling; by adjusting vanes  [3]
 F02C 9/22
·  ·  ·  by adjusting turbine vanes  [3]
 F02C 9/24
·  ·  Control of the pressure level in closed cycles  [3]
 F02C 9/26
·  Control of fuel supply (F02C 9/48 takes precedence; fuel valves F02C 7/232)  [3]
 F02C 9/28
·  ·  Regulating systems responsive to plant or ambient parameters, e.g. temperature, pressure, rotor speed (F02C 9/30-F02C 9/38, F02C 9/44 take precedence)  [3]
 F02C 9/30
·  ·  characterised by variable fuel pump output  [3]
 F02C 9/32
·  ·  characterised by throttling of fuel (F02C 9/38 takes precedence)  [3]
 F02C 9/34
·  ·  ·  Joint control of separate flows to main and auxiliary burners  [3]
 F02C 9/36
·  ·  characterised by returning of fuel to sump (F02C 9/38 takes precedence)  [3]
 F02C 9/38
·  ·  characterised by throttling and returning of fuel to sump  [3]
 F02C 9/40
·  ·  specially adapted to the use of a special fuel or a plurality of fuels  [3]
 F02C 9/42
·  ·  specially adapted for the control of two or more plants simultaneously  [3]
 F02C 9/44
·  ·  responsive to the speed of aircraft, e.g. Mach number control, optimisation of fuel consumption  [3]
 F02C 9/46
·  ·  Emergency fuel control  [3]
 F02C 9/48
·  Control of fuel supply conjointly with another control of the plant (with nozzle section control F02K 1/17)  [3]
 F02C 9/50
·  ·  with control of working fluid flow  [3]
 F02C 9/52
·  ·  ·  by bleeding or by-passing the working fluid  [3]
 F02C 9/54
·  ·  ·  by throttling the working fluid, by adjusting vanes  [3]
 F02C 9/56
·  ·  with power transmission control  [3]
 F02C 9/58
·  ·  ·  with control of a variable-pitch propeller  [3]