15 June 1969: At Edwards Air Force Base, California, the second Lockheed C-5A Galaxy transport, 66-8304, set several records, including the heaviest takeoff weight, 762,800 pounds (346,000 kilograms), and the heaviest landing weight, 600,000 pounds (272,155 kilograms).
5 June 1989: The Antonov An-225 Mriya took off from Kiev with the space shuttle Buran, enroute to the Paris Air Show. The total weight at takeoff was a 1,234,600 pounds (560,005 kilograms)—the greatest weight ever lifted by an aircraft.
The An-225 was derived from the earlier four-engine An-124. It is powered by six Ivchenko Progress D-18T turbofan engines producing 51,600 pounds of thrust, each. The transport has a maximum speed of 460 knots (852 kilometers per hour) and a range just under 10,000 miles (16,093 kilometers).
The world’s heaviest airplane, Mriya is the only one in existence. It was built specifically to transport Buran. A second An-225 was partially constructed, but never finished.
Buran, the Soviet space shuttle, has made one unmanned flight into orbit, 15 November 1988. It was destroyed 12 May 2002 when its hangar collapsed, killing eight Workers.
5–6 June 1944 (D-Day -1): Beginning in the late evening, 821 Douglas C-47 Skytrain twin-engine transports, and 516 Waco CG-4A and Airspeed AS.51 Horsa gliders of the IXth Troop Carrier Command, airlifted 13,348 paratroopers of the 82nd and 101st Airborne Divisions, United States Army, and another 7,900 men of the British Army 6th Airborne Division and the 1st Canadian Parachute Battalion.
The airplanes flew in a Vee-of Vees formation, nine airplanes abreast, 100 feet (30 meters) from wing tip to wing tip, 1,000 feet (305 meters) in trail, stretching for over 300 miles (483 kilometers). They flew in darkness at an altitude of 500 to 1,000 feet (152–305 meters).
Their mission was to drop the paratroopers behind the invasion beaches of Normandy during the hours before the amphibious assault began on D-Day.
19 May 1949: Martin JRM-3 Mars, Marshall Mars, United States Navy Bureau of Aeronautics serial number (Bu. No.) 76822 flew from the Alameda Naval Air Station on the east shore of San Francisco Bay, to San Diego Bay, a distance of approximately 450 miles (725 kilometers). On board, in addition to the flight crew of 7, were 301 passengers.
The Associated Press wire service reported the story:
NAVY’S BIG FLYING BOAT MARSHALL MARS CARRIES 301 PERSONS
SAN FRANCISCO, May 19—(AP)—The Navy’s big flying boat Marshall Mars carried a record load of 301 passengers—plus seven crewmen—on a flight to San Diego today.
It had never carried more than 269 passengers before.
The 1:52 p.m. takeoff, from the naval air station at Alameda, across the bay, was uneventful.
Today’s passengers are personnel of Air Group 5, Alameda Naval Air Station, who are being transferred to San Diego. Mattresses on the floor were provided for men unable to find seats.
The Martin JRM Mars was a large four-engine flying boat transport built by the Glenn L. Martin Company for the U. S. Navy. Only five were built, four designated JRM-1, with the last one being a JRM-2. Each airplane was given an individual name derived from the names of island chains in the Pacific Ocean: Marianas Mars, Hawaii Mars, Philippine Mars, Marshall Mars and Caroline Mars. These airplanes were used to transport personnel and cargo between the West Coast of the United States and the Hawaiian Islands. All were upgraded to JRM-3.
The Martin JRM-3 Mars had a normal crew of 4, with accommodations for a relief crew. It was designed to carry 133 combat troops or 32,000 pounds (14,515 kilograms) of cargo. It was 117 feet, 3 inches (35.738 meters) long with a wingspan of 200 feet (60.960 meters) and height of 38 feet, 5 inches (11.709 meters). The flying boat had an empty weight of 75,573 pounds (34,279.3 kilograms) and a loaded weight of 90,000 pounds (40,823.3 kilograms). The maximum takeoff weight (MTOW) was 165,000 pounds (74,842.7 kilograms).
A NASA publication states, “A zero-lift drag coefficient of 0.0233 and a maximum lift-drag ratio of 16.4 made the JRM the most aerodynamically efficient of any of of the flying boats. . . .”
The Martin Mars was powered by four air-cooled, supercharged, direct-fuel-injected, 3,347.662-cubic-inch-displacement (54.858 liter) Wright Aeronautical Division R-3350-24WA (Cyclone 18 825C18BD1) (also known as the Duplex-Cyclone), a two-row 18-cylinder radial engines with a compression ratio of 6.70:1 and water/alcohol injection. This engine has a normal power rating of 2,000 horsepower at 2,400 r.p.m at 5,500 feet (1,676 meters) and 1,800 horsepower at 2,400 r.p.m. at 15,000 feet (4,572 meters). The engine’s takeoff power rating is 2,500 horsepower at 2,900 r.p.m. 100/130 octane aviation gasoline was required. The engines drove four-bladed 16 foot, 8 inch (5.080 meter) Curtiss Electric variable-pitch propellers through a 0.4375:1 gear reduction. (After modification to the JRM-3, the propellers on the inboard engines were reversible.) The R-3350-24WA is 6 feet, 8.58 inches (2.047 meters) long, and 4 feet, 6.13 inches (1.375 meters) in diameter. Its dry weight is 2,822 pounds (1,280 kilograms).
The JRM-3 had a cruise speed of 190 miles per hour (305.8 kilometers per hour) and a maximum speed of 221 miles per hour (355.7 kilometers per hour). The service ceiling was 14,600 feet (4,450 meters) and its range was 5,000 miles (8,046.7 kilometers).
On 5 April 1950, Marshall Mars had an engine fire and made an emergency landing off Diamond Head, Hawaii. The crew was rescued but the airplane exploded and sank. The wreck was discovered on the sea floor in August 2004.
The remaining airplanes were later converted to fire fighting airplanes in Canada. Only two remain.
19 May 1934: The first flight of the Tupolev ANT-20 Maxim Gorky. This was the largest airplane of its time. Designed by Andrei Tupolev to carry 72 passengers, the giant airplane was operated by eight crew members. Used primarily as a Soviet propaganda tool, it also carried a powerful broadcast radio station, a printing shop, and loudspeakers.
Constructed of corrugated sheet metal for rigidity and strength, the ANT-20 was 107 feet, 11¼ inches (32.899 meters) long, with a wingspan of 206 feet, 8¼ feet inches (62.998 meters) and height of 34 feet, 9¼ inches (10.598 meters). Its empty weight was 62,700 pounds (28,440.2 kilograms) and the maximum takeoff weight was 116,600 pounds (52,888.9 kilograms)
The ANT-20 was powered by eight liquid-cooled, supercharged, 2,896.1-cubic-inch-displacement (46.928 liter) Mikulin AM-34FRN single overhead cam (SOHC) 60° V-12 engines, rated at 1,200 horsepower at 2,000 r.p.m., each. They drove two-bladed propellers. Two of the engines were mounted above the fuselage, in a push-pull configuration.
Maxim Gorky had a maximum speed of 137 miles per hour (220.5 kilometers per hour), a service ceiling of 4,500 meters (14,764 feet) and a range of 750 miles (1,207 kilometers).
Just 364 days after its first flight, 18 May 1935, Maxim Gorky crashed following a mid-air collision during a formation flight over Moscow. 45 people were killed.