|  | F |
SECTION F — MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING

ENGINES AND PUMPS

|  | F02 |
COMBUSTION ENGINES (cyclically operating valves therefor, lubricating, exhausting, or silencing engines Fulltext... Hierarchy... Expanded...F01); HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS

|  | F02C |
GAS-TURBINE PLANTS (construction of turbines Fulltext... Hierarchy... Expanded...F01D; construction of compressors or fans Fulltext... Hierarchy... Expanded...F04; fuel combustion apparatus in general Fulltext... Hierarchy... Expanded...F23; gas-turbine plant working on a refrigerating cycle Fulltext... Hierarchy... Expanded...F25; using gas-turbine plants in vehicles, see the relevant vehicle classes)

|  | F02C |
Note(s) Attention is drawn to the notes preceding class Fulltext... Hierarchy... Expanded...F01. Notes on scope This sub-class comprises: combustion product or hot gas turbine plants (steam turbine plants Fulltext... Hierarchy... Expanded...F01K); internal combustion turbines or turbine plants; turbine plants in which the working fluid is an unheated, pressurised gas (special vapour plants Fulltext... Hierarchy... Expanded...F01K). In this sub-class, the term "gas-turbine plants" covers all the above subject-matter and it additionally embraces features of jet-propulsion plants common to gas-turbine plants.

|  | F02C 1/00 |
Gas-turbine plants characterised by the working fluid (the fluid being combustion products Fulltext... Hierarchy... Expanded...F02C 3/00)

|  | F02C 1/02 |
· | the fluid being unheated

|  | F02C 1/04 |
· | the fluid being heated indirectly

|  | F02C 1/06 |
· · | the heating being effected by reheated exhaust gas

|  | F02C 3/00 |
Gas-turbine plants characterised by the working fluid being generated by combustion (by intermittent combustion Fulltext... Hierarchy... Expanded...F02C 5/00)

|  | F02C 3/02 |
· | using exhaust-gas pressure in a pressure exchanger to compress combustion-air

|  | F02C 3/04 |
· | having a turbine driving a compressor

|  | F02C 3/06 |
· · | the compressor being of the axial-flow type

|  | F02C 3/08 |
· · | the compressor being of the centrifugal or radial flow type

|  | F02C 3/10 |
· · | with another turbine driving output shaft but not driving the compressor

|  | F02C 3/12 |
· · | with means for storing compressed air

|  | F02C 3/14 |
· | the combustion chambers being associated with the turbine or compressor

|  | F02C 3/16 |
· · | the combustion chambers being formed at least partly in the turbine rotor

|  | F02C 3/18 |
· | using heaters between turbine stages

|  | F02C 3/20 |
· | the fluid being generated by combustion of a specific fuel (regulating fuel supply Fulltext... Hierarchy... Expanded...F02C 9/00)

|  | F02C 3/22 |
· · | the fuel being gaseous

|  | F02C 3/24 |
· · | the fuel being liquid

|  | F02C 3/26 |
· · | the fuel being pulverulent or solid

|  | F02C 5/00 |
Gas-turbine plants characterised by the working fluid being generated by intermittent combustion

|  | F02C 5/02 |
· | the combustion chambers being associated with the turbine or compressor

|  | F02C 5/04 |
· · | the chambers being formed at least partly in the turbine rotor

|  | F02C 5/06 |
· | the fluid being generated in combustion apparatus of the positive-displacement type having essentially no mechanical power output (internal-combustion engines of the positive-displacement type with prolonged expansion in exhaust turbines Fulltext... Hierarchy... Expanded...F02B)

|  | F02C 5/08 |
· · | the apparatus being of the free-piston gas-generator

|  | F02C 5/10 |
· | the fluid forming an oscillating gas column, i.e. the combustion chambers having no valves, e.g. using Helmholtz effect

|  | F02C 5/12 |
· | the combustion chambers having inlet or outlet valves, e.g. Holzwarth gas-turbine plants

|  | F02C 7/00 |
Other gas-turbine plants; Component parts, details or accessories, not provided for in, or of interest apart from, groups Fulltext... Hierarchy... Expanded...Fulltext... Hierarchy... Expanded...F02C 1/00-F02C 5/00 (controlling Fulltext... Hierarchy... Expanded...F02C 9/00)

|  | F02C 7/02 |
· | Plants having two or more turbines and not otherwise provided for; Adaptations of plants for special use; Combinations of plants with other devices (aspects predominantly concerning such devices, see the relevant classes for such devices)

|  | F02C 7/04 |
· | Air intakes

|  | F02C 7/06 |
· | Arrangements of bearings; Lubricating

|  | F02C 7/08 |
· | Heating air supply before combustion, e.g. by exhaust gases

|  | F02C 7/10 |
· · | by means of regenerative heat-exchangers

|  | F02C 7/12 |
· | Cooling of plants

|  | F02C 7/14 |
· · | Cooling of fluids in the plants

|  | 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 7/24 |
· | Heat or noise insulation

|  | F02C 7/26 |
· | Starting; Ignition

|  | F02C 7/28 |
· | Arrangement of seals

|  | F02C 7/30 |
· | Preventing corrosion in gas-swept spaces

|  | F02C 7/32 |
· | Arrangement of auxiliaries

|  | F02C 7/34 |
· | Using waste heat externally of the plant (using exhaust products for propulsion Fulltext... Hierarchy... Expanded...F02K)

|  | F02C 9/00 |
Controlling gas-turbine plants; (controlling turbines in general Fulltext... Hierarchy... Expanded...F01D; controlling or regulating in general Fulltext... Hierarchy... Expanded...G05)

|  | F02C 9/02 |
· | Regulating, i.e. controlling automatically

|  | F02C 9/04 |
· · | fuel supply

|  | F02C 9/06 |
· · · | by varying fuel-pump output

|  | F02C 9/08 |
· · · | by throttling

|  | F02C 9/10 |
· · · | by returning fuel from fuel-pump output to fuel-pump inlet

|  | F02C 9/12 |
· · · · | by returning fuel from burners

|  | F02C 9/14 |
· · | air supply (heating air supply before combustion Fulltext... Hierarchy... Expanded...F02C 7/08)