Boeing 757F vs. Lockheed C-5 Galaxy

The Boeing 757-200 Package Freighter (PF) is a cargo variant of the Boeing 757-200 passenger aircraft, designed for transporting cargo over medium and long distances. With its long narrow-body design, it serves as a versatile option in the air cargo sector.

Production History: The Boeing 757PF, introduced in 1987 and produced until 2004, is a direct adaptation of the passenger version of the 757-200. A total of 80 cargo versions of this model were built, reflecting its popularity and utility in the freight transportation industry. The aircraft has seen various modifications and variants over the years. Many passenger models have also been converted into freighters​​​​ once they exceed their passenger lifespan.

Design Features: The 757 freighter features a large main deck cargo door on the forward port-side fuselage. Next to this is an normal exit door used by the pilots, with all other emergency exits omitted. Similarly, all cabin windows and passenger amenities were left uninstalled. The Boeing 757-200PF has a length of 47.3 meters, a wingspan of 38 meters, and a height of 13.6 meters. It is equipped with either Rolls-Royce RB211-535E4 or Pratt & Whitney PW2000 engines. The aircraft's maximum takeoff weight is 127 tons, and it can carry up to 43 tons of cargo. The cargo hold dimensions are 33.2 m x 3.5 m x 2.4 m, accommodating 15 pallets or 39,100 kg of cargo​​.

Operational History: The Boeing 757-200 Freighter has been a mainstay in the fleets of various cargo operators. Its ability to handle diverse cargo types, from mail and goods to airline supplies, has made it a reliable choice for different logistical needs. Its performance and capacity have been especially beneficial for medium-range cargo routes​​​​. Freight operators of the 757 include UPS, FedEx, DHL, and Cargojet.

Similar Freighter Models: Comparable aircraft to the Boeing 757-200PF include the Airbus A321F, Boeing 737 Freighter, and Tupolev Tu-204. However, the 757 plays a very unique role in the air transport industry due to its size and performance capabilities. With 757s aging and on their way out of service, they will most likely be replaced by more fuel efficient narrowbodies like the 737 and A320, or newer widebodies like the 767s and A330.

The Lockheed C-5 Galaxy is a large military transport aircraft developed by the Lockheed Corporation, now Lockheed Martin. The C-5 distinguishes itself by its sheer size and payload capacity, designed to transport a wide range of military equipment, including oversized vehicles and machinery.

Production History: Development of the Lockheed C-5 Galaxy began in the 1960s to replace the Douglas C-133 Cargomaster and to complement the Lockheed C-141 Starlifters. The United States Army desired a transport aircraft that could carry a wide array of outsized equipment. After a rigorous selection process, Lockheed's design, characterized by a T-tail and a unique cockpit position above the cargo area, was chosen in 1965. The first C-5A Galaxy was rolled out in 1968. The program, however, faced several challenges, including technical problems, weight issues, and cost overruns, leading to congressional investigations. Despite these hurdles, the C-5 Galaxy emerged as a key asset in strategic airlift capabilities​​​​.

Design Features: The C-5 Galaxy stands out with its four General Electric TF39-GE-1C turbofan engines, providing a significant thrust and efficiency. Its design includes a high-set wing with a 25-degree sweep and a distinctive T-tail. The aircraft is equipped with forward and rear cargo loading assemblies and a visor-type upward-hinged nose. The upper deck can accommodate a crew of six, a relief crew, and passengers, with provisions like bunk rooms, galleys, and lavatories. The cargo compartment is vast, capable of carrying a range of military hardware, including tanks, helicopters, and large numbers of troops. The landing gear system is unique, featuring a "kneeling" capability to facilitate cargo loading. The C-5 also has inflight refueling capabilities, extending its operational range significantly​​.

Operational History: Since its introduction, the C-5 Galaxy has been a critical component of U.S. military logistics, capable of transporting heavy and outsized military equipment globally. It played a vital role in operations such as Desert Shield and Desert Storm, where despite being only 12% of the airlift fleet, it carried 44% of the cargo. The Galaxy's capacity for strategic airlift has proven invaluable in numerous military and humanitarian operations, making it a cornerstone of the U.S. Air Force's airlift capability.

Similar Freighter Models: The Lockheed C-5 Galaxy is often mentioned alongside the Russian Antonov An-124. The C-5 was the largest aircraft in the world until the introduction of the An-124 in 1982. Compared to other US military aircraft, the C-5 Galaxy is significantly bigger than the C-17 Globemaster III, C-130 Hercules, and C-141 Starlifter.