Temperature control setpoint offset for ram air minimization

An environmental control systems (ECS) for an aircraft in which bleed air is cooled with ram air, the ECS may include a ram air controller configured to control a rate of ram air flow responsively to a desired temperature of bleed air at a bleed air outlet and a bleed air controller configured to co...

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Bibliographische Detailangaben
Hauptverfasser:	LAU ANDREA CHOR YING, LI XIAOMEI
Format:	Patent
Sprache:	eng
Schlagworte:	AIRCRAFT ARRANGEMENTS OR MOUNTING OF POWER PLANTS OR PROPULSIONTRANSMISSIONS IN AIRCRAFT AVIATION CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TOTRANSPORTATION CONTROLLING COSMONAUTICS EQUIPMENT FOR FITTING IN OR TO AIRCRAFT FLYING SUITS GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS PARACHUTES PERFORMING OPERATIONS PHYSICS REGULATING SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION TECHNICAL SUBJECTS COVERED BY FORMER USPC TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINSTCLIMATE CHANGE TRANSPORTING
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Beschreibung
Zusammenfassung:	An environmental control systems (ECS) for an aircraft in which bleed air is cooled with ram air, the ECS may include a ram air controller configured to control a rate of ram air flow responsively to a desired temperature of bleed air at a bleed air outlet and a bleed air controller configured to control a rate of bleed air flow responsively to a temperature lower than the desired temperature of the bleed air at the bleed air outlet. Collectively the two controllers may provide a minimizing of ram air usage for cooling the bleed air.