Synthesized low-pressure bleed air scheme for aircraft bleed air network

US11180259B2 · kind B2 · utility

Assignee

• Hamilton Sundstrand Corporation (HSC) · US

Inventors

• Jeffry K. Kamenetz · Windsor, US
• Erin G. Kline · Vernon, US
• Jeffrey Ernst · Wethersfield, US
• Bruce R. Schroder · Agawam, US
• Kevin R. DeRoy · Vernon, US
• Vince Vessella · Delta, CA
• Darragh McGrath · Montréal, CA
• Adam Fagnani · Montréal, CA
• Michel Labrecque · Vars, CA

Key dates

• Filing date: Mar 21, 2018
• Grant date: Nov 23, 2021
• Expiry date: Mar 26, 2039

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y02T50/50
• WIPO field: Transport
• WIPO sector: Mechanical engineering

Abstract

An aircraft includes one or more engines configured to generate high-pressure bleed air and low-pressure bleed air. An aircraft environmental control system (ECS) is in fluid communication with one or more of the engines to receive the high-pressure bleed air and the low-pressure bleed air. The ECS calculates a synthesized low-pressure value associated with the low-pressure bleed air while still providing bleed air using the high pressure bleed air. The ECS further switches from the high pressure bleed air to the low-bleed pressure air through the ECS while blocking flow of the high-pressure bleed air through the ECS based on the synthesized low-pressure value.