The Airliner Cabin Environment and the Health of Passengers and Crew
The Airliner Cabin Environment and the Health of Passengers and Crew

Author: National Research Council

Publisher: National Academies Press

Published: 2002-02-03

Total Pages: 345

ISBN-13: 0309082897

DOWNLOAD EBOOK

Although poor air quality is probably not the hazard that is foremost in peoples' minds as they board planes, it has been a concern for years. Passengers have complained about dry eyes, sore throat, dizziness, headaches, and other symptoms. Flight attendants have repeatedly raised questions about the safety of the air that they breathe. The Airliner Cabin Environment and the Health of Passengers and Crew examines in detail the aircraft environmental control systems, the sources of chemical and biological contaminants in aircraft cabins, and the toxicity and health effects associated with these contaminants. The book provides some recommendations for potential approaches for improving cabin air quality and a surveillance and research program.

Validation of the Gas Generator Method of Calculating Jet-engine Thrust and Evaluation of XB-70-1 Airplane Engine Performance at Ground Static Conditons
Validation of the Gas Generator Method of Calculating Jet-engine Thrust and Evaluation of XB-70-1 Airplane Engine Performance at Ground Static Conditons

Author: Henry H. Arnaiz

Publisher:

Published: 1970

Total Pages: 52

ISBN-13:

DOWNLOAD EBOOK

Deficiencies in established techniques of measuring aircraft thrust in flight led to the application of the gas generator method of calculating engine thrust to the XB-70-1 airplane. A series of tests on a ground static-thrust stand [were]performed on the airplane to establish at ground static conditions the accuracy of this method, to measure the installed thrust of the YJ93-GE-3 engine, and to determine the effect of instrumentation errors and nonuniform flows at the engine compressor face on the thrust calculation. Tests with an aerodynamically choked inlet, an opened inlet-bypass system, and varying combinations of operating engines were also conducted. Results showed that the accuracy of the gas generator method was ±2 percent for the normal operation of the XB-70-1 airplane at ground static conditions and for the upper 70 percent of the engine's throttle range. They also showed that the effect of individual instrument errors on the thrust calculation was reduced because of the large number of measurements and that abnormally high inlet flow distortion affects the thrust calculation. When corrected for inlet losses, the installed thrust of the YJ93-GE-3 engine agreed favorably with the engine manufacturer's uninstalled estimated thrust for all power settings except those at the low end.--P. [i].