1
Alankar Gupta, Michael B McGrady, John B Tedor: Breathing system for high altitude aircraft. The Boeing Company, Bruce A Kaser, March 24, 1987: US04651728 (69 worldwide citation)

A breathing system (10) is provided for supplying physiologically acceptable breathing gas (oxygen partial pressure greater than that required to prevent hypoxia) to a pilot of an aircraft. The system (10) includes a breathing mask (12) connected to a pressure regulator (14). The pressure regulator ...


2
Alankar Gupta, Joe N Runnels: Cabin-air recirculation system powered by cabin-to-ambient pressure differential. The Boeing Company, Christensen O Connor Johnson & Kindness, April 21, 1981: US04262495 (59 worldwide citation)

In an air conditioning system for an aircraft cabin, stale air is withdrawn from the cabin, then filtered, compressed and cooled in a recirculation loop which returns the reconditioned air to an air distribution manifold that supplies the cabin with fresh air. The compression stage moves the air thr ...


3
Alankar Gupta, Kenneth L Waters: Integrated thermal anti-icing and environmental control system. The Boeing Company, Delbert J Barnard, November 13, 1984: US04482114 (40 worldwide citation)

Hot compressed air is bled from the compressor of an engine and a portion of it is directed through a flow through type indirect heat exchanger of ring form located within an annular chamber in the engine cowl which is partially formed by lip surfaces of the inlet. Such air gives up heat to low pres ...


4
Alankar Gupta: Helium gas total flood fire suppression system. The Boeing Company, Robert R Richardson, August 30, 2005: US06935433 (23 worldwide citation)

The invention provides systems and methods adaptable to all gaseous agents including Helium to suppress fire in at least one enclosed space. Suppressants are delivered by a dedicated subsystem connected to cargo compartments or to engine nacelles, or by an integrated system connected to cargo compar ...


5
Anil D Shah, Alankar Gupta: Method and apparatus for detecting conditions conducive to ice formation. The Boeing Company, Perkins Coie, February 13, 2007: US07175136 (22 worldwide citation)

A method for detecting ambient conditions conducive to ice formation. The method includes the steps of measuring at least one parameter selected from a group of parameters consisting of a static pressure, a total pressure, a total temperature, a dew point temperature, and a liquid water content, and ...


6
Alankar Gupta, Robert W Jenny, Frank L Malone: Drain apparatus for aircraft. The Boeing Company, Lynn H Hess, Bernard A Donahue, Nicolaas DeVogel, March 26, 1985: US04506851 (11 worldwide citation)

A drain structure for facilitating the draining of liquid condensate from inside an aircraft whenever air pressures inside and outside the aircraft are substantially equal. A pressure-sensitive apparatus is provided in conjunction with a drain opening through the aircraft's outer skin so that liquid ...


7
Alankar Gupta: System and method to make a fuel tank inert. The Boeing Company, Armstrong Teasdale, April 5, 2011: US07918358 (9 worldwide citation)

A method and system used to make a fuel tank inert that includes a chiller assembly coupled in flow communication with a vehicle fuel tank, and a system controller assembly operatively coupled to the chiller assembly. More specifically, the chiller assembly includes a pump configured to extract a qu ...


8
Anil D Shah, Alankar Gupta: Method and apparatus for detecting conditions conducive to ice formation. The Boeing Company, Perkins Coie, December 8, 2009: US07628359 (7 worldwide citation)

A method for detecting ambient conditions conducive to ice formation. The method includes the steps of measuring at least one parameter selected from a group of parameters consisting of a static pressure, a total pressure, a total temperature, a dew point temperature, and a liquid water content, and ...


9
Alankar Gupta: System and method to make a fuel tank inert. The Boeing Company, Armstrong Teasdale, March 6, 2012: US08128739 (6 worldwide citation)

A fuel tank safety system includes an ullage cooling assembly and a system controller. The ullage cooling assembly includes a compressor configured to extract a quantity of ullage gas from the fuel tank, a heat exchanger coupled in flow communication downstream of the compressor, wherein the heat ex ...


10
Alankar Gupta: Systems and methods for making a fuel tank inert. The Boeing Company, Armstrong Teasedale, June 5, 2012: US08192532 (5 worldwide citation)

A fuel tank safety system includes a heat exchanger in flow communication with a cabin conditioning system, a blower configured to withdraw a quantity of ullage gas from a vehicle fuel tank for routing through the heat exchanger, and conduit interconnecting the fuel tank, the blower, and the heat ex ...