FS-1999-12-41-LaRC
December 1999

A Boeing 757-200 aircraft obtained by NASA in 1994 is now serving as a "flying laboratory" for aeronautical research. The aircraft is being modified extensively for a broad range of flight research programs in the next 20 years to benefit the U.S. aviation industry and commercial airline customers. Called ARIES, or Airborne Research Integrated Experiments System, the aircraft is being used to conduct research to increase aircraft safety, operating efficiency and compatibility with future air traffic control systems. It is a vital research tool in support of the agency's Aviation Safety and Aviation Systems capacity programs.

The 757 is continuing work begun by the NASA 737-100 in state-of-the-art technologies such as electronic cockpit displays, flight management systems and flight safety devices. The 737, the first off Boeing's production line in 1967, was decommissioned in 1997.

Current and projected research needs greatly exceeded the capabilities of the 737. The 757 is a more modern airplane that utilizes electronic systems to a much greater extent in this growing electronic age. The 757 will better support research and development of the aeronautical sub-systems for the airlines and the airframe and systems manufacturers. Already the airplane has been used for several research programs, including:

• Flight tests using Global Positioning System (GPS) satellite data to perform automated landings of the airplane.
• The study of jet-engine contrails to determine their effects on the atmosphere.
• Testing of a system to improve the safety and efficiency of aircraft during landing, taxiing and takeoff by giving pilots a computerized map showing airport ground operations.

Future research will focus on technologies to improve air safety and efficiency, including:

• Evaluation of a system that would provide pilots with better strategic and tactical weather information while in flight.
• Testing of an airborne system that allows closely-spaced approaches to landings during reduced visibility to increase airport capacity.
• Runway friction research.

The NASA 757 was located after an extensive survey of the jet airliner market. It was the second 757 built and the first one produced that was sold to an airline. The first 757 is owned by Boeing. The airplane now at Langley had been used by Boeing for Federal Aviation Administration certification of the 757 class of jet airliners.

The second-generation, digitally-equipped transport, designated N501EA, was obtained from the Eastern Airline bankruptcy estate. Langley took possession of the $24-million aircraft March 23, 1994, at McCarran International Airport in Las Vegas, Nev.

The 757, maintained and flown by NASA's Langley Research Center in Hampton, Va., is an integral part of the Transport Research Facilities (TRF). The TRF is a set of tools used in a simulation-to-flight concept. This concept incorporates common software, hardware, and processes for both ground-based flight simulators and the 757, providing government and industry with an efficient way to develop and test new technology concepts to enhance the capacity, safety, and operational needs of the ever-changing national airspace system.

Facilities used in the simulation-to-flight concept are:

• The 757, which features the Flight Deck Research Station (FDRS) on the left side of the cockpit for test subjects to evaluate flight systems and operational procedures. The 757 also contains the Transport Research System (TRS), the research computers and data collection systems used to support experiments and tests in the Flight Deck Research Station.
• The Research System Integration Laboratory (RSIL), a special-purpose laboratory that contains a ground-based version of the TRS, is used for the integration and preflight validation of key hardwre and software systems required for simulation and/or flight tests.
• The Cockpit Motion Facility (CMF), a multiple-cab fixed- and motion-based flight simulation laboratory that contains the RSIL, the Integration Flight Deck (IFD) simulator cab and the Research Flight Deck (RFD) simulator cab.
• The IFD cab closely resembles the 757 flight deck and is used in support of flight testing on the ARIES and for aircraft systems integration studies.
• The RFD cab is an advanced subsonic transport flight deck used for full-crew-workload and full-aircraft-systems integration development and tests by the research community.

  757 Facts

  Four research documentation video cameras are on the 757, three may be arranged anywhere within or on the airplane, and one on the tail that provides a "bird's eye view" of the wings and front of the ARIES 757. Eight video recorders support the cameras, flight displays, and other data collection. Over 1,000 different data parameters are recorded throughout a research flight. Additional different parameters may be specified for recording during tests. Twelve test pallets/research work stations are in the baseline layout. Others are added depending on research needs. The 757 is 155'3" long, and 44'6" high at its tallest point, the tail. It measures 124'10" wingtip to wingtip.

For more information, contact the NASA Langley Office of Public Affairs at (757) 864-6124. Visit the web site at < LARC Home Page>.