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Dive into the research topics where Stephen E. Tongue is active.

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Featured researches published by Stephen E. Tongue.


international conference on evolvable systems | 2001

A Cooling System for the EAPU Shuttle Upgrade

Stephen E. Tongue; Greg Guyette; Brad Irlbeck

The Shuttle orbiter currently uses hydrazine-powered APUs for powering its hydraulic system pumps. To enhance vehicle safety and reliability, NASA is pursuing an APU upgrade where the hydrazine powered turbine is replaced by an electric motor pump and battery power supply. This EAPU (Electric APU) upgrade presents several thermal control challenges most notably the new requirement for moderate temperature control of high-power electron ics at 132 of (55.6 C). This paper describes how the existing Water Spray Boiler (WSB), which currently cools the hydraulic fluid and APU lubrication oil, is being modified to provide EAPU thermal management.


Archive | 2006

Water-from-air system using desiccant wheel and exhaust

Stephen E. Tongue


Archive | 2002

Temperature swing humidity collector using powerplant waste heat

Stephen E. Tongue; Douglas Snowdon


Archive | 2005

Combined water-from-air and water-from-exhaust system

Stephen E. Tongue


Archive | 2007

Water-from-air using liquid desiccant and vehicle exhaust

Stephen E. Tongue


Archive | 2014

SLIDE BUSHING SUPPORTED AIRCRAFT CARGO LOADING SYSTEMS AND METHODS

Richard A. Himmelmann; Stephen E. Tongue


Archive | 2016

Hybrid electric pulsed-power propulsion system for aircraft

Richard A. Himmelmann; Robert H. Perkinson; Stephen E. Tongue


Archive | 2011

Wind Turbine Tower with Yaw Bearing System

Richard A. Himmelmann; Stephen E. Tongue


Archive | 2013

Variable Speed Friction Wheel Drive Train for Wind Turbines

Richard A. Himmelmann; Stephen E. Tongue


Archive | 2012

Friction Wheel Drive Train for a Wind Turbine

Richard A. Himmelmann; Stephen E. Tongue

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