Pratt & Whitney is developing and powering next generation propulsion systems and technologies
that provide an immediate path to fuel efficiency, fewer emissions and noise reduction.
For more than 20 years, Pratt & Whitney has made significant investments in technologies like the Geared Turbofan™ and its Technology for Advanced Low Nitrogen Oxide (TALON) family of combustors. We are also leading the design of next generation, sustainable products including the PW100, PW300, PW600 and PW800 engine families, and with engine improvements including upgrades to Advantage70 and V2500Select™ engines.
In 2007, UTC embarked on a four-year program to reduce greenhouse gas emissions by 12 percent, water consumption by 10 percent, air emissions by 20 percent and non-recyclable waste by 30 percent compared with 2006. These metrics are not normalized for business volumes—which are growing—meaning that the per-product emissions will be dropping even more.
We will continue to meet industry environmental performance requirements through aggressively researching and testing alternative fuels, and other measures.
TALON Family of Combustors
In partnership with NASA, Pratt & Whitney developed the TALON family of combustors that reduce nitrogen oxides (NOx), unburned hydrocarbons (UHC) and carbon monoxide (CO). Each gas is among several regulated pollutants that impact local air quality, and in the case of NOx, can also impact climate change.
Pratt & Whitney certified the TALON II combustor for use on the PW4158 and PW4168 engines that power the Airbus A300 and A330 aircraft respectively. The TALON II combustor is also in revenue service on the PW6000-powered Airbus A318 aircraft. When installed on the Airbus aircraft, the PW4000 engines with TALON II combustors have reduced NOx emissions by 19 to 28 percent, UHC emissions by 28 percent and CO emissions by approximately 6 percent as compared to the initial production combustors. These improvements rank the TALON II-equipped engines among the cleanest in the industry.
An emissions upgrade kit comprised of improved fuel nozzles and low NOx combustors employing the TALON concept has also been used for the JT8D-200 kit upgrade. The JT8D-200 with the emissions kit is among the cleanest engine in terms of absolute LTO NOx and Unburned Hydrocarbon (UHC) emissions in service today. The emissions kit reduces NOx by over 25 percent, UHC to virtually zero, and smoke by over 50 percent. The JT8D-200 QuietEagle™ noise reduction system for MD-80 aircraft was certified in 2006. The QuietEagle meets all the requirements of Federal Aviation Regulation (FAR) Part 36 Stage 4 and International Civil Aviation Organization’s (ICAO) Annex 16 Chapter 4 noise standards. It reduces noise by up to six decibels.
Additionally, Pratt & Whitney has developed several engine upgrades that enhance the environmental performance of engines including the PW4170 Advantage70™ for the A330 and the V2500-A5 for the A320 aircraft in collaboration with International Aero Engines (IAE) joint venture partners.
Synthetic & Biofuels
Pratt & Whitney has been committed to exploring the potential of synthetic jet fuels for more than 16 years and is a key partner of the U.S. Department of Defense and Air Force in pursuing clean, energy efficient solutions that support U.S. energy independence. We also participate in several international working groups to bring alternative fuels into field use.
In early 2008, our Geared Turbofan demonstrator engine successfully operated using an alternative fuel blend during Phase I ground testing in West Palm Beach, Fla. In 2009, a Pratt & Whitney engine was on the first Japan Airlines test demonstration flight that used biofuel.
A Pratt & Whitney F100-PW-220 engine powered a biofuel test flight of a U.S. Air Force F-15 Eagle at Eglin Air Force Base, Fla., in 2010. This flight test, powered by alternative jet fuel, followed engine ground testing completed at Arnold Engineering Development Center in Tennessee. These tests directly support the U.S. Air Force’s goal of acquiring half of its domestic jet fuel requirements from alternate sources by 2016.
The F100-PW-220 is Pratt & Whitney’s second military engine to successfully complete ground and flight tests using biofuels. A C-17 Globemaster III, powered exclusively by four Pratt & Whitney F117 engines, completed testing in August 2010. Similar tests are planned for the F119 in the future.
An Air China Boeing 747 aircraft, powered by Pratt & Whitney PW4000 94-inch engines, completed a flight using a sustainable biofuel in October 2011. No modifications to the aircraft or engine were required for the biofuel, which is a “drop-in” replacement for petroleum-based fuel. The flight was completed as part of the Energy Cooperation Program’s Sustainable Biofuel Program, led by Boeing and other industry members, including Honeywell and Pratt & Whitney.
Pratt & Whitney is aggressively researching and testing alternative fuels for the aviation industry and we will conduct additional ground and flight tests across a range of products. Current plans for testing include commercial, military and business jet engines.
EcoPower® Engine Water Wash System
The EcoPower® engine water wash system reduces fuel burn by up to 1.2 percent and increases engine exhaust gas temperature margin up to 15 degrees Celsius. Engines washed twice per year lower a wide body aircraft's average CO2 emissions by as much as 750 metric tons annually.