# US 2016/0355271 A1 · Hybrid electric

> Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt

- Number: US 2016/0355271 A1
- Document ID: US20160355271A1
- Status: Published application
- Kind: A1
- Application number: 15/176,651
- Filed: 2016-06-08
- Published: 2016-12-08
- Earliest claimed: 2015-06-08
- Assignees: Hamilton Sundstrand Corporation
- Applicants: Hamilton Sundstrand Corporation
- Inventors: Louis J. Bruno; Thomas M. Zywiak; David W. Anderson; Todd A. Spierling
- Web page: https://patentgrep.com/patent/US20160355271A1

## CPC

- B64D 13/08: the air being heated or cooled
- B64D 2013/0618: {with arrangements for reducing or managing bleed air, using another air source, e.g. ram air}
- B64D 2013/0644: {including electric motors or generators}
- B64D 2013/0696: {with provisions for starting power plants}
- Y02T 50/40: Weight reduction
- Y02T 50/50: On board measures aiming to increase energy efficiency
- B64D: EQUIPMENT FOR FITTING IN OR TO AIRCRAFT; FLIGHT SUITS; PARACHUTES; ARRANGEMENT OR MOUNTING OF POWER PLANTS OR PROPULSION TRANSMISSIONS IN AIRCRAFT
- Y02T: CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION

## Abstract

An airplane is provided. The airplane includes a vapor cycle air conditioning system that receives outside air, a bleed system with at least one port, and an electric fan. A source of outside air when the airplane is on ground is forced air from the electric fan. The source of the outside air when the airplane is at cruise is bleed air from the at least one port.

## Claims

### Claim 1

An airplane comprising:
a vapor cycle air conditioning system configured to receive outside air;
a bleed system with at least one port; and
an electric fan,
wherein a source of outside air when the airplane is on ground comprises forced air from the electric fan, and
wherein the source of the outside air during when the airplane is at cruise comprises bleed air from the at least one port.

### Claim 2 (depends on 1)

The airplane of claim 1, comprising a motor drive configured to provide electric power to the vapor cycle air conditioning system.

### Claim 3 (depends on 2)

The airplane of claim 2, wherein the motor drive is air cooled.

### Claim 4 (depends on 2)

The airplane of claim 2, wherein the motor drive is configured to start an engine of the airplane.

### Claim 5 (depends on 4)

The airplane of claim 4, comprising a starter drive generator mounted on the engine of the airplane.

### Claim 6 (depends on 5)

The airplane of claim 5, wherein the motor drive supplies power to the starter drive generator.

### Claim 7 (depends on 4)

The airplane of claim 4, comprising a variable frequency starter drive generator mounted on the engine.

### Claim 8 (depends on 7)

The airplane of claim 7, wherein the motor drive supplies power to the variable frequency starter generator.

### Claim 9 (depends on 1)

The airplane of claim 1, wherein the electric fan is configured to boost a pressure of the bleed air.

### Claim 10 (depends on 1)

The airplane of claim 1, wherein the at least one port of the bleed system is configured at a location of an engine of the airplane to enable at least one of a reduction of size of a precooler, a bypassing of the precooler, and a deletion of the precooler.

### Claim 11 (depends on 1)

The airplane of claim 1, wherein a first port of the at least one port is configured to cause the bleed air to bypass a precooler.

### Claim 12 (depends on 1)

The airplane of claim 1, comprising at least one wing anti-icing subsystem configured to be electrically powered.