Prof. Hamsa Balakrishnan - Articles and news items
Issue 5 2010 • 1 October 2010 • Hamsa Balakrishnan, John-Paul Clarke, Eric Feron, and Marc Pélegrin
Airport infrastructure capacity is rapidly being approached in many cities around the world. Environmental factors, such as acoustic and chemical emissions, are increasingly less tolerated by neighbouring communities. The net result is that new means must be found that deliver more aircraft to the airspace with less environmental impact on the community, while maintaining the current level of safety enjoyed by air transportation. In this article, we investigate a few promising options to decrease the environmental footprint of airports.
Issue 3 2010 • 9 June 2010 • Regina Clewlow, Hamsa Balakrishnan and Tom Reynolds, Massachusetts Institute of Technology
Aircraft taxi operations are a significant source of energy consumption and emissions at airports. In 2007, an estimated 4,000 tons of hydrocarbons, 8,000 tons of nitrogen oxides and 45,000 tons of carbon monoxide were emitted through taxi-out operations at U.S. airports1. These pollutants contribute to low-altitude emissions, directly impact local nonattainment of air pollution standards, and represent an endangerment to human health and welfare.Given increasing fuel prices and concern about aviation-related environmental impacts, airlines have implemented a number of practices to reduce fuel burn during ground operations.
Flights in the United States spent more than 20 million minutes taxiing in to their gates and over 49 million minutes taxiing out for departure in the year 2006. Aircraft taxiing on the surface contribute significantly to the fuel burn and emissions at airports.