Method for designing an ecs

Patent metadata

Field	Value
Publication number	US-2016355268-A1
Application number	US-201615172570-A
Country	US
Kind code	A1
Filing date	Jun 3, 2016
Priority date	Jun 4, 2015
Publication date	Dec 8, 2016
Grant date	—

Abstract

An airplane is provided. The airplane includes an environmental control system that provides a pressurized medium to a chamber of the airplane. The airplane also includes a bleed system. The bleed system includes a plurality of ports, each of which can provide a bleed medium from an engine of the airplane to the environmental control system. The plurality of ports includes at least a first port, a second port, and a third port. The first port is selected for an idle condition. The second port is selected for a hot day cruise condition. The third port is selected for a standard operating condition. The bleed system can operate in a first mode, a second mode, or a third mode to provide the bleed medium to the environmental control system from the first port, the second port, or the third port respectively.

First claim

1 . An airplane comprising:
an environmental control system configured to provide a pressurized medium to a chamber of the airplane; and a bleed system comprising a plurality of ports, each of the plurality of ports being configured to provide a bleed medium from an engine of the airplane to the environmental control system, wherein the plurality of ports includes at least a first port selected for an idle condition, a second port selected for a hot day cruise condition, and a third port selected for a standard operating condition, and wherein the bleed system operates in a first mode, a second mode, or a third mode to provide the bleed medium to the environmental control system from the first port, the second port, or the third port respectively.

2 . The system of claim 1 , wherein the first port comprises a high pressure port and the first mode is used for the idle condition.

3 . The system of claim 1 , wherein the second port comprises an intermediate pressure and the second mode is used for the hot day cruise condition.

4 . The system of claim 1 , wherein the third port comprises a low pressure port and the third mode is used for the standard operating condition.

5 . The system of claim 1 , wherein the bleed system includes a precooler.

6 . The system of claim 5 , wherein the precooler is bypassed by the bleed medium during the third mode.

7 . The system of claim 1 , wherein the environmental control system comprises:
a compressing device comprising a compressor configured to pressurize the bleed medium.

8 . The system of claim 7 , wherein the compressing device comprises:
a motor to provide power to the compressor.

9 . The system of claim 8 , wherein the motor is an electrically powered motor.

10 . The system of claim 8 , wherein the motor is a hydraulically powered motor.

11 . The system of claim 7 , wherein the compressing device comprises:
a turbine to provide power to the compressor.

12 . The system of claim 11 , wherein the turbine is configured to receive the bleed medium.

13 . The system of claim 11 , wherein the turbine is configured to receive a discharge medium from the chamber.

14 . The system of claim 1 , wherein the bleed system comprises:
a turbine coupled to a gearbox of the engine and configured pressurize the bleed medium.

15 . A method of optimizing a bleed medium provided from a bleed system of an airplane to an environmental control system of the airplane, the method comprising:
analyzing operational data of an engine of the airplane for a plurality of engine stages; choosing one or more bleed ports of the bleed system that optimally meet a required pressurization of a chamber of the airplane for a plurality of flight segments, wherein the one or more bleed ports provides the bleed medium to the environmental control system; and configuring the environmental control system to operate with the bleed medium provided by the one or more bleed ports.

16 . The method of claim 15 , wherein the environmental control system comprises a compressing device comprising a compressor configured to pressurize the bleed medium, and wherein the configuring of the environmental control system comprises:
augmenting the pressurization of the bleed medium by providing power to the compressor via a motor.

17 . The method of claim 16 , wherein the motor is an electrically powered motor.

18 . The method of claim 16 , wherein the motor is a hydraulically powered motor.

19 . The method of claim 15 , wherein the environmental control system comprises a compressing device comprising a compressor configured to pressurize the bleed medium, and wherein the configuring of the environmental control system comprises:
augmenting the pressurization of the bleed medium by providing power to the compressor via a turbine.

20 . The method of claim 19 , wherein the turbine is configured to receive the bleed medium.

21 . The method of claim 19 , wherein the turbine is configured to receive a discharge medium from the chamber.

22 . The method of claim 15 , wherein the bleed system comprises a turbine coupled to a gearbox of the engine and wherein the turbine is configured pressurize the bleed medium.

23 . The method of claim 15 , wherein the engine data comprises pressure and temperature combinations of the bleed air for every stage on the engine with respect to a plurality of flight segments.

24 . The method of claim 15 , wherein the plurality of flight segments comprises a first segment including ground idle, a second segment including taxi, a third segment including climb, a fourth segment including cruise, a fifth segment including descend, and a sixth segment including hold.

25 . The method of claim 15 , wherein each of the one or more bleed ports yields a bleed pressure slightly above or near the required pressurization.

26 . The method of claim 15 , wherein the bleed system operates in a first mode, a second mode, or a third mode to provide the bleed medium to the environmental control system from a first port, a second port, or a third port, respectively, the one or more bleed ports.

Assignees

• Hamilton Sundstrand Corp

Inventors

• Bruno Louis J

Classifications

• B64D2013/0644

  including electric motors or generators · CPC title

• B64D13/02

  the air being pressurised · CPC title

• B64D13/06 Primary

  the air being conditioned (pressurising B64D13/02) · CPC title

• B64D2013/0618

  with arrangements for reducing or managing bleed air, using another air source, e.g. ram air · CPC title

• B64D13/08

  the air being heated or cooled · CPC title