Tag Archives: Douglas R4D-1 Skytrain

23 December 1941

This Douglas C-47-DL Skytrain, serial number 41-7723, on display at the Pima Air and Space Museum, Tucson, Arizona, was the second C-47 to be built. (Pima)
This Douglas C-47-DL Skytrain, serial number 41-7723, on display at the Pima Air and Space Museum, Tucson, Arizona, was the second C-47 to be built. (Pima)

23 December 1941: Although hundreds of Douglas DC-3 commercial transports had been impressed into military service directly from the production line and designated C-48, C-49 and C-50, the first airplane of the type specifically built as a military transport, C-47 Skytrain, 41-7722, made its first flight at Daugherty Field, Long Beach, California, on this date. More than 10,000 C-47s would follow. In service with the United States Navy, the Skytrain was designated R4D-1. In British service, it was called the Dakota Mk.I.

The primary differences between the civil and military airframes was the addition of a cargo door on the left side of the fuselage and a strengthened floor in the cabin.

Two Douglas C-47 Skytrains. Nearest the camera is C-47A-90-DL 43-15661. The further airplane is C-47A-65-DL 42-100550. (U.S. Air Force)
Two Douglas C-47 Skytrains. Nearest the camera is C-47A-90-DL 43-15661. The further airplane is C-47A-65-DL 42-100550. (U.S. Air Force)

The Douglas C-47 Skytrain is an all-metal twin-engine, low wing monoplane transport with retractable landing gear. It was operated by a minimum flight crew of two pilots, a navigator and a radio operator. The wing is fully cantilevered and the fuselage is of semi-monocoque construction. Control surfaces are fabric-covered.

The C-47 is 64 feet, 5½ inches (19.647 meters) long with a wingspan of 95 feet (28.956 meters) and height of 17 feet (5.182 meters). Empty weight of the C-47A is 17,257 pounds (7,828 kilograms) and the maximum takeoff weight is 29,300 pounds (13,290 kilograms).

The C-47 is powered by two 1,829.4-cubic-inch-displacement (29.978 liter) air-cooled, supercharged R-1830-92 (Pratt & Whitney Twin Wasp S1C3-G) two-row 14-cylinder radial engines. These had a maximum continuous rating for normal operation was 1,060 horsepower at 2,550 r.pm., up to 7,500 feet (2,286 meters), and 1,200 horsepower at 2,700 r.p.m., at Sea Level, for takeoff. Each engine drives a three-bladed Hamilton Standard Hydromatic constant-speed full-feathering propeller with a diameter of 11 feet, 6 inches (3.505 meters) through a 16:9 gear reduction. The R-1830-92 is 48.19 inches (1.224 meters) long, 61.67 inches (1.566 meters) in diameter, and weighs 1,465 pounds (665 kilograms).

The C-47 has a cruising speed of 185 miles per hour (298 kilometers per hour) at 10,000 feet (3,048 meters) and service ceiling of 24,100 feet (7,346 meters).

The C-47 could carry 6,000 pounds (2,722 kilograms) of cargo, or 28 fully-equipped paratroopers. Alternatively, 14 patients on stretchers could be carried, along with three attendants.

A Douglas employee at Long Beach, California works on a C-47 Pratt and Whitney R-1830-92 Twin Wasp radial engine. Stenciling shows that the propellers were inspected 10 October 1942.
A Douglas employee at Long Beach, California works on a C-47’s Pratt & Whitney Twin Wasp R-1830-92 radial engine. Stenciling shows that the propellers were inspected 10 October 1942. (Albert T. Palmer/Office of War Information)

 

U.S. Paratroopers board a Douglas C-47 Skytrain for Operation Husky, 9 July 1943. (U.S. Army)
U.S. Paratroopers board a Douglas C-47 Skytrain for Operation Husky, 9 July 1943. (U.S. Army)

© 2016, Bryan R. Swopes

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John Herschel Glenn, Jr., Astronaut (18 July 1921–8 December 2016)

John Herschel Glenn, Jr., NASA Project Mercury Astronaut. (Ralph Morse/LIFE Magazine)

John Glenn, one of the original seven astronauts selected by NASA for Project Mercury, was a personal hero of mine. As a young boy growing up in Southern California, less than three miles from Rocketdyne’s engine test stands in Santa Susana, I followed the progress of all the astronauts. I recall having a map pinned to my wall, showing the orbital path of Friendship 7 as Glenn made his historic three orbits of the Earth. All of the astronauts, and the X-15 test pilots at Edwards, were heroes to me, but for some reason, John Glenn was special.

John H. Glenn, Jr., Pilot. (John Glenn Archives, Ohio State University)

John Herschel Glenn, Jr., was born at Cambridge, Ohio, 18 July 1921, the first of four children of John Herschel Glenn, a plumber, and Clara Teresa Sproat Glenn. The Glenn family resided in New Concorde, Ohio. Glenn attended New Concord High School, graduating in 1939, and then enrolled at Muskingum College, also in New Concord, where he majored in engineering. While in college, he learned to fly.

Soon after the United States entered World War II, John Glenn enlisted in the United States Navy as a Naval Aviation Cadet, 28 March 1942. He transferred to the Marine Corps while still in flight training, and after qualifying as a Naval Aviator, was commissioned as a Second Lieutenant, U.S. Marine Corps Reserve, 16 March 1943.

On 6 April 1943, Lieutenant Glenn married Miss Anna Margaret Castor, also from New Concorde. They would have two children, Carolyn Ann Glenn and John David Glenn.

In October 1943, Glenn was promoted to First Lieutenant. Initially assigned as a transport pilot flying the Douglas R4D-1 Skytrain with Marine Utility Squadron 315 (VMJ-315) in the Pacific, he was transferred to Marine Fighter Squadron 155 (VMF-155). He flew 59 combat missions with the Chance Vought F4U Corsair in the Marshall Islands.

Lieutenant John H. Glenn, Jr., USMCR, flying a Chance Vought F4U-1 Corsair with VMF-155, 1943. (Smithsonian National Air and Space Museum/John Glenn Archives, The Ohio State University)

In 1945, Glenn was assigned to Marine Fighter Squadron 218 (VMF-218), again flying an F4U-4 Corsair, patrolling China with the 1st Marine Division. Lieutenant Glenn was promoted to the rank of Captain in July 1945.

In 1946, Captain Glenn, was transferred from the USMCR to the regular Marine Corps, retaining his temporary rank. On 7 August 1947, the rank of Captain was made permanent.

Captain Glenn served as an advanced flight instructor at NAS Corpus Christi, Texas, from June 1948 to December 1950. With the Korean War, Glenn was assigned to Marine Fighter Squadron 311 (VMF-311), which flew the Grumman F9F-2 Panther.

Captain John H. Glenn, Jr., USMCR, a fighter pilot of VMF-311, examines some of the 714 holes in his Grumman F9F-2 Panther. (U.S. Air Force)

Captain Glenn few 63 combat missions with VMF-311. He was promoted to the rank of Major, 28 June 1952. He served as an exchange officer with the U.S. Air Force, flying a North American Aviation F-86F Sabre with the 25th Fighter Interceptor Squadron, 51st Fighter Interceptor Wing at K-13, an air base at Suwon, Republic of Korea. In July 1953, Glenn shot down three enemy Mikoyan-Gurevich MiG 15 jet fighters.

Major John H. Glenn, Jr., United States Marine Corps, standing with his North American Aviation F-86-30-NA Sabre, 52-4584, “MiG Mad Marine,” at Suwon, Korea, July 1953. (John Glenn Archives, The Ohio State University)

Major Glenn trained at the U.S. Navy Test Pilot School at NATC Patuxent River, Maryland, in 1954, and from 1956 to 1959, was assigned to the Bureau of Aeronautics, Fighter Design Branch.

On 16 July 1957, Major Glenn flew a Chance Vought F8U-1P Crusader from NAS Los Alamitos, on the coast of southern California, to Floyd Bennet Field, Brooklyn, New York, in 3 hours, 23 minutes, 8.4 seconds, averaging 725.25 miles per hour (1,167.18 kilometers per hour). Thomas S. Gates, Jr., Secretary of the Navy, presented Major Glenn the Distinguished Flying Cross.

Major John H. Glenn, Jr., United States Marine Corps, with his Vought F8U-1P Crusader, Bu. No. 144608, after his record-setting flight, 16 July 1957. (U. S. Navy)

Major Glenn was promoted to the rank of Lieutenant Colonel, 1 April 1959. He was selected as an Astronaut with the National Aeronautics and Space Administration’s Project Mercury and joined the NASA Space Task group at the Langley Research Center. Lieutenant Colonel Glenn was the senior officer and the oldest member of “The Mercury 7.”

The Mercury 7. Front row, left to right, Walter H. Schirra, Donald K. Slayton, John H. Glen, Jr., and Scott Carpenter. Back row: Alan B. Shepard, Jr., Virgil I. Grissom, and L. Gordon Cooper. (NASA)

At 9:47:39 a.m., Eastern Standard Time (14:47:39 UTC), 20 February 1961, Mercury Atlas 6 lifted off from Launch Complex 14, Cape Canaveral Air Force Station, Cape Canaveral, Florida. This was the third launch of a manned Mercury spacecraft, and the first time that an Atlas rocket had been used.

Aboard the Mercury was John Glenn, making his first space flight. He had named the capsule Friendship 7. Alan Shepard and Gus Grissom had each made a suborbital flight, but Glenn was going into Earth orbit.

Each orbit took 88 minutes, 19 seconds. The spacecraft’s altitude ranged from 100 miles (161 kilometers) to 162.2 miles (261 kilometers).

During the 4 hour, 55 minute, 23 second flight, Friendship 7 orbited the Earth three times, and traveled 75,679 miles (121,794 kilometers). John Glenn was the first American astronaut to orbit the Earth. (Cosmonaut Yuri Gagarin had orbited the Earth 12 April 1961.)

After re-entry, the capsule parachuted into the Atlantic Ocean, splashing down only six miles from the recovery ship, USS Noa (DD-841).

Launch of Mercury-Atlas 6 from Launch Complex 14, Cape Canaveral Air Force Station, 14:47:39 UTC, 20 February 1962. (NASA)

When the Space Task Group was moved to the Manned Spacecraft Center at Houston, Texas, in 1962, John Glenn was involved in the layout and design of spacecraft cockpits and function of controls. On 16 January 1964, John Glenn resigned from NASA. He was promoted to the rank of Colonel in October 1964, then he retired from the Marine Corps 1 January 1965, after 23 years of military service.

Glenn worked in private industry for several years before beginning a career in politics. In 1974, he was elected to the United States Senate, representing his home State of Ohio. He served in the United States Congress from 24 December 1974 to 3 January 1999.

John Glenn wasn’t finished with spaceflight, though. From 29 October to 7 November 1998, Senator Glenn served as a NASA Payload Specialist aboard Space Shuttle Discovery (OV-103) during Mission STS-95. At the age of 77 years, John Glenn was the oldest person to fly in space.

During his two space flights, John Glenn orbited the Earth 137 times. His total time in space is 10 days, 49 minutes, 25 seconds (240:49:25).

In late November 2016, Glenn was admitted to Ohio State University Wexner Medical Center at Columbus, Ohio. He died there, 8 December 2016, at the age of 95 years.

John Herschel Glenn, Jr., Naval Aviator, Fighter Pilot, Test Pilot, Record-setter, Astronaut. Colonel, United States Marine Corps. United States Senator. American Hero.

Godspeed, John Glenn.

Senator John H. Glenn, Jr., NASA Payload Specialist, 1998. (NASA)

© 2016 Bryan R. Swopes

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