Airbus A350-900 vs. McDonnell Douglas MD-11

Launched in 2013, the Airbus A350-900 is a long-haul, wide-body aircraft designed for high-capacity travel. The modern twin-engine aircraft offers a combination of range, comfort, and fuel efficiency.

The A350-900, with a length of 219.2 feet (66.8 meters) and a wingspan of 212.4 feet (64.8 meters), stands out for its considerable size. Its wing area of 4,757.6 square feet (442.0 square meters) contributes to its aerodynamic efficiency. The aircraft accommodates 319 passengers in a typical three-class configuration. Its design prioritizes passenger comfort, incorporating features such as a quieter cabin and advanced air systems for a more pleasant travel experience. Equipped with Trent XWB turbofan engines that deliver a total thrust of 148,000 lbf (660.0 kN), the A350-900 boasts significant fuel efficiency and reduced environmental impact. With a fuel capacity of 37,248 US gallons (141,000 liters), the aircraft achieves a range of 8,300 nautical miles (15,372 kilometers), enabling airlines to operate on extensive long-haul routes without stopovers.

In the competitive field of wide-body aircraft, the A350-900 challenges models like the Boeing 787-9 Dreamliner and the Boeing 777-200ER. It is recognized for its innovative use of materials, including extensive carbon-fiber-reinforced polymer, which contributes to weight reduction and overall efficiency. Key operators of the Airbus A350-900, such as Qatar Airways, Cathay Pacific, Lufthansa, and Delta Air Lines have utilized the aircraft for its operational flexibility and economic performance. The A350-900 serves a variety of long-range routes from domestic cross-country flights to international long-haul routes.

The Airbus A350-900's introduction into the market was a significant step in Airbus's strategy to offer cutting-edge, efficient aircraft. Its development reflects the manufacturer's response to airlines' demands for sustainable, high-capacity, and long-range travel solutions.

The McDonnell Douglas MD-11 is a wide-body, tri-jet airliner, recognized for its extended range and enhanced capabilities in long-haul commercial aviation. As a successor to the iconic DC-10, the MD-11 incorporated advanced technology and design improvements, making it a significant model in the evolution of wide-body aircraft. The MD-11 took its maiden flight in 1990, and was produced until the turn of the 21st century. There are no MD-11s servicing passenger flights today, but some MD-11 are still being used for freight operations with FedEx, UPS, and Western Global Airlines.

With a length of 61.6 meters (202.1 feet), the MD-11 is notably longer than the DC-10, which provided increased passenger and cargo capacity. This extension in length was complemented by a wingspan of 52.0 meters (170.5 feet), which included winglets for improved aerodynamic efficiency. The MD-11's was equipped with GE CF6-80C2s or PW4000 turbofan engines, which delivered a total maximum thrust of 822.0 kN (123,000 lbf). With a substantial fuel capacity of 146,173 liters (38,615 US gallons), the MD-11 boasts a range of approximately 12,455 kilometers (6,725 nautical miles), enabling it to operate on intercontinental routes with ease.

The MD-11 comfortably accommodated 298 passengers, and could be designed to fit over 340 in a higher density configuration. The most common configurations for the twin aisle jet included 9 seats to a row (3-3-3 or 3-4-2).

In the competitive landscape of long-haul airliners, the McDonnell Douglas MD-11 was positioned as an alternative to models like the Boeing 747 and the Lockheed L-1011 TriStar. By 2004, most carriers that utilized the MD-11 for long-haul passenger routes had replaced it with the Airbus A330, A340, and Boeing 777. When Boeing acquired McDonnell Douglas in 1997, it ultimately created internal competition for the MD-11 with the 767 and 777. A lack of interest from the market also lead to Boeing cutting production for the commercial variant short, while the freight version was continued for slightly longer.

KLM, Swissair, and Delta Air Lines were among the airlines who utilized the aircraft's range and capacity to expand their international route offerings. The MD-11's operational role was characterized by its ability to efficiently serve long-haul routes, offering a blend of passenger comfort and operational economics. Some airlines like China Eastern Airlines and Korean Air had converted their MD-11 aircraft into freighters rather than selling or retiring them.

The MD-11's production and service history reflect its role as a pivotal model in the wide-body aircraft segment. Its design and technological advancements, including the use of winglets and a glass cockpit, marked important steps in the advancement of commercial aircraft design. Although its production was eventually surpassed by more modern aircraft, the MD-11 remains a notable aircraft in the history of aviation, particularly for its contributions to long-haul air travel.