COMBUSTOR RE-LIGHT PROCEDURE
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United States of America Patent
Stats
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N/A
Issued Date -
Jun 27, 2024
app pub date -
Jun 20, 2023
filing date -
Dec 21, 2022
priority date (Note) -
Published
status (Latency Note)
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Importance

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Non-US Coverage
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Abstract
There is provided a method of operating a gas turbine engine. The gas turbine engine comprises a staged combustor having an arrangement of fuel spray nozzles in which fuel flow is biased to a subset of the nozzles adjacent one or more ignitors during a re-light procedure. The method comprises transferring heat from the oil to the fuel before the fuel enters the combustor so as to lower the fuel viscosity to 0.58 mm2/s or lower on entry to the combustor at cruise conditions. Also disclosed is a gas turbine engine.
First Claim
all claims..Other Claims data not available
Family

- 15 United States
- 10 France
- 8 Japan
- 7 China
- 5 Korea
- 2 Other
Patent Owner(s)
Patent Owner | Address | |
---|---|---|
ROLLS-ROYCE PLC | LONDON |
International Classification(s)

- 2023 Application Filing Year
- F23K Class
- 25 Applications Filed
- 7 Patents Issued To-Date
- 28 % Issued To-Date
Inventor(s)
Inventor Name | Address | # of filed Patents | Total Citations |
---|---|---|---|
BEAVEN, David M | Nottingham, GB | 23 | 186 |
# of filed Patents : 23 Total Citations : 186 | |||
BEMMENT, Craig W | Derby, GB | 104 | 229 |
# of filed Patents : 104 Total Citations : 229 | |||
FERRA, Paul W | Derby, GB | 21 | 86 |
# of filed Patents : 21 Total Citations : 86 | |||
GUNASEKARAN, Barani P | Derby, GB | 2 | 0 |
# of filed Patents : 2 Total Citations : 0 | |||
KEELER, Benjamin J | Chesterfield, GB | 54 | 84 |
# of filed Patents : 54 Total Citations : 84 | |||
MADDEN, Christopher P | Derby, GB | 56 | 108 |
# of filed Patents : 56 Total Citations : 108 | |||
SWANN, Peter | Derby, GB | 85 | 375 |
# of filed Patents : 85 Total Citations : 375 | |||
YATES, Martin K | Derby, GB | 41 | 73 |
# of filed Patents : 41 Total Citations : 73 |
Cited Art Landscape
- No Cited Art to Display

Patent Citation Ranking
- 0 Citation Count
- F23K Class
- 0 % this patent is cited more than
- 1 Age
Forward Cite Landscape
- No Forward Cites to Display

Maintenance Fees
Fee | Large entity fee | small entity fee | micro entity fee | due date |
---|---|---|---|---|
3.5 Year Payment | $1600.00 | $800.00 | $400.00 | Dec 27, 2027 |
7.5 Year Payment | $3600.00 | $1800.00 | $900.00 | Dec 27, 2031 |
11.5 Year Payment | $7400.00 | $3700.00 | $1850.00 | Dec 27, 2035 |
Fee | Large entity fee | small entity fee | micro entity fee |
---|---|---|---|
Surcharge - 3.5 year - Late payment within 6 months | $160.00 | $80.00 | $40.00 |
Surcharge - 7.5 year - Late payment within 6 months | $160.00 | $80.00 | $40.00 |
Surcharge - 11.5 year - Late payment within 6 months | $160.00 | $80.00 | $40.00 |
Surcharge after expiration - Late payment is unavoidable | $700.00 | $350.00 | $175.00 |
Surcharge after expiration - Late payment is unintentional | $1,640.00 | $820.00 | $410.00 |
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