| For the first time in aviation history, Boeing flew a manned airplane powered by hydrogen fuel cells. Although unmanned fuel-cell based aircrafts were flown in the past, this manned flight is an important milestone in aircraft engineering, as fuel-cell vehicles appear to be the future transportation technology. | ||||||
During the flights, the pilot of the experimental airplane climbed to an altitude of 1,000 meters above sea level using a combination of battery power and power generated by hydrogen fuel cells. After reaching the cruise altitude and disconnecting the batteries, the pilot flew straight and level at a cruising speed of 100 kilometers per hour for approximately 20 minutes solely on power generated by the fuel cells. Although the takeoff required the use of a regular engine, it is still considered by many in the industry as a remarkable feat. A fuel cell is an electrochemical device that converts hydrogen directly into electricity and heat with none of the polluting products of combustion such as carbon dioxide. Other than heat, water is its only exhaust. This makes it a good substitute for conventional engines used today. According to Boeing researchers, PEM fuel cell technology could potentially power small manned and unmanned air vehicles. In the future, solid oxide fuel cells could be applied to secondary power-generating systems, such as auxiliary power units for large commercial airplanes. Although Boeing does not envision that fuel cells will ever serve as the primary power for large passenger airplanes, the company will continue to investigate the potential of this technology as well as other sustainable alternative fuel and energy sources, all in the name of environmental protection.
TFOT has also covered the Zephyr, a solar-powered unmanned aerial vehicle which holds the world record for the longest-duration unmanned flight, and theSkyWatcher, a new type of Unmanned Aerial Vehicle tha can also be manned if necessary. Other related stories are the Air Car CityCat, which is equipped with a revolutionary dual-energy compressed air engine, and the Evolution, a unique aircraft that can travel on land, water, and air. Fore more information about the Fuel Cell Demonstrator Airplane project, see Boeing's website. |
It was the best of times, it was the worst of times, it was the age of wisdom, it was the age of foolishness, it was the epoch of belief, it was the epoch of incredulity, it was the season of light, it was the season of darkness, it was the spring of hope, it was the winter of despair, we hadPhiladelphia asked Benjamin Franklin, "Well, Doctor, what have we got, a republic or a monarchy?" With no hesitation whatsoever, Franklin responded, "A republic, if you can keep it." ~ BENJAMIN FRANKLIN 1787