|  | 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

|  | F02K |
JET-PROPULSION PLANTS (arrangement or mounting of jet-propulsion plants in land vehicles or vehicles in general Fulltext... Hierarchy... Expanded...B60K; arrangement or mounting of jet-propulsion plants in waterborne vessels Fulltext... Hierarchy... Expanded...B63H; controlling aircraft attitude, flight direction, or altitude by jet reaction Fulltext... Hierarchy... Expanded...B64C; arrangement or mounting of jet-propulsion plants in aircraft Fulltext... Hierarchy... Expanded...B64D; plants characterised by the power of the working fluid being divided between jet propulsion and another form of propulsion, e.g. propeller, Fulltext... Hierarchy... Expanded...F02B, Fulltext... Hierarchy... Expanded...F02C; features of jet-propulsion plants common to gas-turbine plants, air intakes or fuel supply control of air-breathing jet-propulsion plants Fulltext... Hierarchy... Expanded...F02C)

|  | F02K |
Note(s) Attention is drawn to the notes preceding class Fulltext... Hierarchy... Expanded...F01. In this sub-class, the term "jet-propulsion plants" means plants using combustion to produce a fluid stream from which a propulsive thrust on the plants is obtained on the reaction principle.

|  | F02K 1/00 |
Plants characterised by the form or arrangement of the jet pipe or nozzle; Jet pipes or nozzles peculiar thereto (rocket nozzles Fulltext... Hierarchy... Expanded...F02K 9/97)

|  | F02K 1/02 |
( transferred to Fulltext... Hierarchy... Expanded...F02K 1/28, Fulltext... Hierarchy... Expanded...F02K 1/36, Fulltext... Hierarchy... Expanded...F02K 1/38, Fulltext... Hierarchy... Expanded...F02K 1/40, Fulltext... Hierarchy... Expanded...F02K 1/46 )

|  | F02K 1/04 |
· | Mounting of an exhaust cone in the jet pipe

|  | F02K 1/06 |
· | Varying effective area of jet pipe or nozzle (Fulltext... Hierarchy... Expanded...F02K 1/30 takes precedence)

|  | F02K 1/08 |
· · | by axially moving or transversely deforming an internal member, e.g. the exhaust cone

|  | F02K 1/09 |
· · | by axially moving an external member, e.g. a shroud (Fulltext... Hierarchy... Expanded...F02K 1/12 takes precedence) [3]

|  | F02K 1/10 |
· · | by distorting the jet pipe or nozzle

|  | F02K 1/11 |
· · | by means of pivoted eyelids [3]

|  | F02K 1/12 |
· · | by means of pivoted flaps

|  | F02K 1/14 |
( transferred to Fulltext... Hierarchy... Expanded...F02K 1/28 )

|  | F02K 1/15 |
· · | Control or regulation [3]

|  | F02K 1/16 |
· · · | conjointly with another control

|  | F02K 1/17 |
· · · · | with control of fuel supply [3]

|  | F02K 1/18 |
· · · | Automatic

|  | F02K 1/20 |
( covered by Fulltext... Hierarchy... Expanded...F02K 1/00 )

|  | F02K 1/22 |
( transferred to Fulltext... Hierarchy... Expanded...F02K 1/78 )

|  | F02K 1/24 - F02K 1/26 |
( covered by Fulltext... Hierarchy... Expanded...F02K 1/00 )

|  | F02K 1/28 |
· | using fluid jets to influence the jet flow [3]

|  | F02K 1/30 |
· · | for varying effective area of jet pipe or nozzle [3]

|  | F02K 1/32 |
· · | for reversing thrust [3]

|  | F02K 1/34 |
· · | for attenuating noise [3]

|  | F02K 1/36 |
· | having an ejector [3]

|  | F02K 1/38 |
· | Introducing air inside the jet (Fulltext... Hierarchy... Expanded...F02K 1/28 takes precedence) [3]

|  | F02K 1/40 |
· | Nozzles having means for dividing the jet into a plurality of partial jets or having an elongated cross-section outlet [3]

|  | F02K 1/42 |
· · | the means being movable into an inoperative position [3]

|  | F02K 1/44 |
· | Nozzles having means, e.g. a shield, reducing sound radiation in a specified direction (Fulltext... Hierarchy... Expanded...F02K 1/40 takes precedence) [3]

|  | F02K 1/46 |
· | Nozzles having means for adding air to the jet or for augmenting the mixing region between the jet and the ambient air, e.g. for silencing (Fulltext... Hierarchy... Expanded...F02K 1/28, Fulltext... Hierarchy... Expanded...F02K 1/36, Fulltext... Hierarchy... Expanded...F02K 1/38 take precedence) [3]

|  | F02K 1/48 |
· · | Corrugated nozzles [3]

|  | F02K 1/50 |
· · | Deflecting outwardly a portion of the jet by retractable scoop-like baffles [3]

|  | F02K 1/52 |
· | Nozzles specially constructed for positioning adjacent to another nozzle or to a fixed member, e.g. fairing [3]

|  | F02K 1/54 |
· | Nozzles having means for reversing jet thrust (Fulltext... Hierarchy... Expanded...F02K 1/32 takes precedence) [3]

|  | F02K 1/56 |
· · | Reversing jet main flow [3]

|  | F02K 1/58 |
· · · | Reversers mounted on the inner cone or the nozzle housing [3]

|  | F02K 1/60 |
· · · | by blocking the rearward discharge by means of pivoted eyelids or clamshells, e.g. target-type reversers [3]

|  | F02K 1/62 |
· · · | by blocking the rearward discharge by means of flaps [3]

|  | F02K 1/64 |
· · | Reversing fan flow [3]

|  | F02K 1/66 |
· · · | using reversing fan blades [3]

|  | F02K 1/68 |
· · · | Reversers mounted on the engine housing downstream of the fan exhaust section [3]

|  | F02K 1/70 |
· · · | using thrust reverser flaps or doors mounted on the fan housing [3]

|  | F02K 1/72 |
· · · · | the aft end of the fan housing being movable to uncover openings in the fan housing for the reversed flow [3]

|  | F02K 1/74 |
· · | Reversing at least one flow in relation to at least one other flow in a plural-flow engine [3]

|  | F02K 1/76 |
· · | Control or regulation of thrust reversers [3]

|  | F02K 1/78 |
· | Other construction of jet pipes [3]

|  | F02K 1/80 |
· · | Couplings or connections [3]

|  | F02K 1/82 |
· · | jet pipe walls, e.g. liners [3]

|  | F02K 3/00 |
Plants including a gas turbine driving a compressor or a ducted fan

|  | F02K 3/02 |
· | in which part of the working fluid by-passes the turbine and combustion chamber

|  | F02K 3/04 |
· · | the plant including ducted fans, i.e. fans with high volume, low-pressure outputs, for augmenting jet thrust, e.g. of double-flow type

|  | F02K 3/06 |
· · · | with front fan

|  | F02K 3/062 |
· · · | with aft fan [3]

|  | F02K 3/065 |
· · · | with front and aft fans [3]

|  | F02K 3/068 |
· · · | being characterised by a short axial length relative to diameter [3]

|  | F02K 3/072 |
· · · | with counter-rotating rotors [3]

|  | F02K 3/075 |
· · · | controlling flow ratio between flows [3]

|  | F02K 3/077 |
· · · | the plant being of the multiple flow type, i.e. having three or more flows [3]

|  | F02K 3/08 |
· | with supplementary heating of the working fluid (after-burners, combustion chambers per se Fulltext... Hierarchy... Expanded...F23R); Control thereof (control of fuel supply therefor Fulltext... Hierarchy... Expanded...F02C 9/26)

|  | F02K 3/10 |
· · | by after-burners (Fulltext... Hierarchy... Expanded...F02K 3/105 takes precedence)

|  | F02K 3/105 |
· · | Heating the by-pass flow [3]

|  | F02K 3/11 |
· · · | by means of burners or combustion chambers [3]

|  | F02K 3/115 |
· · · | by means of indirect heat exchange [3]

|  | F02K 3/12 |
· | characterised by having more than one gas turbine

|  | F02K 5/00 |
Plants including an engine, other than a gas turbine, driving a compressor or a ducted fan

|  | F02K 5/02 |
· | the engine being of the reciprocating-piston type

|  | F02K 7/00 |
Plants in which the working-fluid is used in a jet only, i.e. the plants not having a turbine or other engine driving a compressor or a ducted fan; Control thereof (rocket-engine plants Fulltext... Hierarchy... Expanded...F02K 9/00)

|  | F02K 7/02 |
· | the jet being intermittent, i.e. pulse jet

|  | F02K 7/04 |
· · | with resonant combustion chambers

|  | F02K 7/06 |
· · | with combustion chambers having valves

|  | F02K 7/067 |
· · · | having aerodynamic valves [3]

|  | F02K 7/075 |
· · | with multiple pulse-jet engines [3]

|  | F02K 7/08 |
· | the jet being continuous

|  | F02K 7/10 |
· | characterised by having ram-action compression, i.e. aero-thermo-dynamic-ducts or ram-jet engines

|  | F02K 7/12 |
· · | Injection-induction jet engines [3]

|  | F02K 7/14 |
· · | with external combustion, e.g. scram-jet engines [3]

|  | F02K 7/16 |
· · | Composite ram-jet/turbo-jet engines [3]

|  | F02K 7/18 |
· · | Composite ram-jet/rocket engines [3]

|  | F02K 7/20 |
· · | Composite ram-jet/pulse-jet engines [3]

|  | F02K 9/00 |
Rocket-engine plants, i.e. plants carrying both fuel and oxidant therefor; Control thereof (chemical composition of propellants Fulltext... Hierarchy... Expanded...C06B, Fulltext... Hierarchy... Expanded...C06D)

|  | F02K 9/02 - F02K 9/06 |
( transferred to Fulltext... Hierarchy... Expanded...Fulltext... Hierarchy... Expanded...F02K 9/08-F02K 9/97, covered by Fulltext... Hierarchy... Expanded...F02K 9/00 )

|  | F02K 9/08 |
· | using solid propellants (Fulltext... Hierarchy... Expanded...F02K 9/72 takes precedence; using semi-solid or pulverulent propellants Fulltext... Hierarchy... Expanded...F02K 9/70) [3]

|  | F02K 9/10 |
· · | Shape or structure of solid propellant charges [3]

|  | F02K 9/12 |
· · · | made of two or more portions burning at different rates [3]

|  | F02K 9/14 |
· · · | made from sheet-like materials, e.g. of carpet-roll type, of layered structure [3]

|  | F02K 9/16 |
· · · | of honeycomb structure [3]

|  | F02K 9/18 |
· · · | of the internal-burning type having a star or like shaped internal cavity [3]

|  | F02K 9/20 |
· · · | of the external-burning type [3]

|  | F02K 9/22 |
· · · | of the front-burning type [3]

|  | F02K 9/24 |
· · | Charging rocket engines with solid propellants; Methods or apparatus specially adapted for working solid propellant charges [3]

|  | F02K 9/26 |
· · | Burning control [3]

|  | F02K 9/28 |
· · | having two or more propellant charges with the propulsion gases exhausting through a common nozzle [3]

|  | F02K 9/30 |
· · | with the propulsion gases exhausting through a plurality of nozzles [3]

|  | F02K 9/32 |
· · | Constructional parts; Details (shape or structure of solid propellant charges Fulltext... Hierarchy... Expanded...F02K 9/10; starting or ignition means or arrangements Fulltext... Hierarchy... Expanded...F02K 9/95; rocket nozzles Fulltext... Hierarchy... Expanded...F02K 9/97) [3]

|  | F02K 9/34 |
· · · | Casings; Combustion chambers; Liners thereof [3]

|  | F02K 9/36 |
· · · | Propellant charge supports [3]

|  | F02K 9/38 |
· · · | Safety devices, e.g. to prevent accidental ignition [3]

|  | F02K 9/40 |
· · · | Cooling arrangements [3]

|  | F02K 9/42 |
· | using liquid or gaseous propellants (Fulltext... Hierarchy... Expanded...F02K 9/72 takes precedence) [3]

|  | F02K 9/44 |
· · | Feeding propellants [3]

|  | F02K 9/46 |
· · · | using pumps (pumps per se Fulltext... Hierarchy... Expanded...F04) [3]

|  | F02K 9/48 |
· · · · | driven by a gas turbine fed by propellant combustion gases [3]

|  | F02K 9/50 |
· · · | using pressurised fluid to pressurize the propellants [3]

|  | F02K 9/52 |
· · · | Injectors (in general Fulltext... Hierarchy... Expanded...B05B) [3]

|  | F02K 9/54 |
· · · | Leakage detectors; Purging systems; Filtration systems (filters per se Fulltext... Hierarchy... Expanded...B01D) [3]

|  | F02K 9/56 |
· · · | Control [3]

|  | F02K 9/58 |
· · · · | Propellant feed valves (valves in general Fulltext... Hierarchy... Expanded...F16K) [3]

|  | F02K 9/60 |
· · | Constructional parts; Details (starting or ignition means or arrangements Fulltext... Hierarchy... Expanded...F02K 9/95; rocket nozzles Fulltext... Hierarchy... Expanded...F02K 9/97) [3]

|  | F02K 9/62 |
· · · | Combustion or thrust chambers [3]

|  | F02K 9/64 |
· · · · | having cooling arrangements [3]

|  | F02K 9/66 |
· · · · | of the rotary type [3]

|  | F02K 9/68 |
· · · | Decomposition chambers [3]

|  | F02K 9/70 |
· | using semi-solid or pulverulent propellants [3]

|  | F02K 9/72 |
· | using liquid and solid propellants, i.e. hybrid rocket-engine plants [3]

|  | F02K 9/74 |
· | combined with another jet-propulsion plant [3]

|  | F02K 9/76 |
· · | with another rocket-engine plant; Multistage rocket-engine plants [3]

|  | F02K 9/78 |
· · | with an air-breathing jet-propulsion plant (with a ram-jet engine Fulltext... Hierarchy... Expanded...F02K 7/18) [3]

|  | F02K 9/80 |
· | characterised by thrust or thrust vector control (Fulltext... Hierarchy... Expanded...F02K 9/26, Fulltext... Hierarchy... Expanded...F02K 9/56, Fulltext... Hierarchy... Expanded...F02K 9/94 take precedence) [3]

|  | F02K 9/82 |
· · | by injection of a secondary fluid into the rocket exhaust gases [3]

|  | F02K 9/84 |
· · | using movable nozzles [3]

|  | F02K 9/86 |
· · | using nozzle throats of adjustable cross-section [3]

|  | F02K 9/88 |
· · | using auxiliary rocket nozzles [3]

|  | F02K 9/90 |
· · | using deflectors (Fulltext... Hierarchy... Expanded...F02K 9/82 takes precedence) [3]

|  | F02K 9/92 |
· · | incorporating means for reversing or terminating thrust [3]

|  | F02K 9/94 |
· | Re-ignitable or restartable rocket-engine plants; Intermittently operated rocket-engine plants [3]

|  | F02K 9/95 |
· | characterised by starting or ignition means or arrangements (safety devices Fulltext... Hierarchy... Expanded...F02K 9/38) [3]

|  | F02K 9/96 |
· | characterised by specially adapted arrangements for testing or measuring [3]

|  | F02K 9/97 |
· | Rocket nozzles (thrust or thrust vector control Fulltext... Hierarchy... Expanded...F02K 9/80) [3]

|  | F02K 11/00 |
Plants not provided for in the preceding groups

|  | F02K 11/02 - F02K 11/04 |
( covered by Fulltext... Hierarchy... Expanded...F02K 11/00 )