US 12,692,874 B2Granted

Turbomachine and method of assembly

AssigneeGeneral Electric Company

InventorsJixian Yao, Trevor Howard Wood, Kishore Ramakrishnan, William J. Solomon, Giridhar Jothiprasad, Nicholas Joseph Kray

Life of this patent

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Abstract

A turbomachine includes an annular casing and a fan disposed inside the annular casing and mounted for rotation about an axial centerline. The annular casing is formed at least partially of a composite material. The fan includes fan blades that extend radially outwardly toward the annular casing. The fan has an average chord fan width according to a first performance factor. The fan has a quantity of fan blades according to a second performance factor.

Claims20

Dependent claims

A turbomachine for an aircraft comprising:

an annular casing formed at least partially of a composite material;
and
a fan disposed inside the annular casing and mounted for rotation about an axial centerline, the fan including fan blades that extend radially outwardly toward the annular casing;
wherein the fan includes an average fan chord width of the fan blades (“c”), a diameter of the fan (“D”), a fan pressure ratio (“FPR”), and a redline corrected fan tip Mach number
(
“
M
tip
,
c
(
RL
)
”
)
according to a First Performance Factor (“FPF”),
wherein
FPF
=
[
c
0.15
·
D
]
/
[
[
FPR
-
1
0.4
]
/
M
tip
,
c
(
RL
)
]
-
1.23
,
wherein
m
1
·
[
M
tip
,
c
(
RL
)
-
1.1
]
+
9.14
>
FPF
>
m
2
·
[
M
tip
,
c
(
RL
)
-
1.1
]
,
and
wherein m1 is equal to 9.43 when
M
tip
,
c
(
RL
)
is greater than or equal to 1.1 and is equal to tip,c 27.02 when
M
tip
,
c
(
RL
)
is less than 1.1, and
wherein m2 is equal to 0.87 when
M
tip
,
c
(
RL
)
is greater than or equal to 1.1 and is equal to 3.34 when
M
tip
,
c
(
RL
)
is less than 1.1.

112 more elements

A turbomachine for an aircraft comprising:

an annular casing formed at least partially of a composite material;
and
a fan disposed inside the annular casing and mounted for rotation about an axial centerline, the fan including fan blades that extend radially outwardly toward the annular casing;
wherein the fan includes an average fan chord width of the fan blades (“c”), a diameter of the fan (“D”), a fan pressure ratio (“FPR”), and a redline corrected fan tip Mach number
(
“
M
tip
,
c
(
RL
)
”
)
according to a First Performance Factor (“FPF”),
wherein
FPF
=
[
c
0.15
·
D
]
/
[
[
FPR
-
1
0.4
]
/
M
tip
,
c
(
RL
)
]
-
1.23
,
wherein
m
1
·
[
M
tip
,
c
(
RL
)
-
1.1
]
+
9.14
>
FPF
>
m
2
·
[
M
tip
,
c
(
RL
)
-
1.1
]
,
and
wherein m1 is equal to 9.43 when
M
tip
,
c
(
RL
)
is greater than or equal to 1.1 and is equal to 27.02 when
M
tip
,
c
(
RL
)
is less than 1.1, and
wherein m2 is equal to 0.87 when
M
tip
,
c
(
RL
)
is greater than or equal to 1.1 and is equal to 3.34 when
M
tip
,
c
(
RL
)
is less than 1.1;
wherein the fan includes a fan hub-to-tip ratio (“HTR”), a fan blade count (“BC”), the fan pressure ratio (“FPR”), and the redline corrected fan tip Mach number
(
“
M
tip
,
c
(
RL
)
”
)
according to a Second Performance Factor (“SPF”),
wherein
SPF
=
π
4
⁢
(
1
-
HTR
2
)
/
(
BC
20
)
/
(
FPR
-
1
0.4
)
/
M
tip
,
c
(
RL
)
-
0.97
,
wherein
m
3
·
[
M
tip
,
c
(
RL
)
-
1.1
]
+
2.52
>
SPF
>
m
4
·
[
M
tip
,
c
(
RL
)
-
1.1
]
wherein m3 is equal to 3.17, and
wherein m4 is equal to 0.41 when
M
tip
,
c
(
RL
)
is greater than or equal to 1.1 and is equal to 0.55 when
M
tip
,
c
(
RL
)
is less than 1.1.

212 more elements

Dependencies are inferred from the claim text.

Facts

Application: 18/656,067Filed 6 May 2024 · continuation in part
Priority: 14 Nov 2022
Published: US 2024/0288000 A129 Aug 2024
Granted: 28 Jul 2026
Term ends: Not estimatedThe source records don’t support an estimate.

Classification3 codes

F04D 29/384
Blades: characterised by form
F04D 19/002
Axial-flow pumps: axial flow fans
F04D
Non-positive-displacement pumps

Family

Application17/986,544Parent of this continuation-in-part · filed 14 Nov 2022
Application18/138,442Parent of this continuation · filed 24 Apr 2023
US 11,661,851 B1Parent of this continuation-in-part · filed 30 May 2023
Application18/511,128Parent of this continuation-in-part · filed 16 Nov 2023
US 11,852,161 B1Parent of this continuation · filed 26 Dec 2023
Application18/654,444Parent of this continuation-in-part · filed 3 May 2024
US 2024/0288002 A1Pre-grant publication · published 29 Aug 2024
Application18/511,128Parent of this continuation
Application18/138,442Parent of this continuation-in-part
US 12,669,131 B2Related patent
US 2024/0288000 A1Published application
US 2024/0288001 A1Published application
US 12,692,874 B2This patent

From the US filing history. Foreign family members aren’t listed.

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Abstract

Facts

Application

18/656,067Filed 6 May 2024 · continuation in part

Priority

14 Nov 2022

Published

US 2024/0288000 A129 Aug 2024

Granted

28 Jul 2026

Term ends

Not estimatedThe source records don’t support an estimate.

Classification3 codes

F04D 29/384
Blades: characterised by form
F04D 19/002
Axial-flow pumps: axial flow fans
F04D
Non-positive-displacement pumps

Family

Application17/986,544Parent of this continuation-in-part · filed 14 Nov 2022

Application18/138,442Parent of this continuation · filed 24 Apr 2023

US 11,661,851 B1Parent of this continuation-in-part · filed 30 May 2023

Application18/511,128Parent of this continuation-in-part · filed 16 Nov 2023

US 11,852,161 B1Parent of this continuation · filed 26 Dec 2023

Application18/654,444Parent of this continuation-in-part · filed 3 May 2024

US 2024/0288002 A1Pre-grant publication · published 29 Aug 2024

Application18/511,128Parent of this continuation

Application18/138,442Parent of this continuation-in-part

US 12,669,131 B2Related patent

US 2024/0288000 A1Published application

US 2024/0288001 A1Published application

US 12,692,874 B2This patent

From the US filing history. Foreign family members aren’t listed.