Daily Archives: July 12, 2021

11–12 July 1999

Amundsen Scott South Pole Station

11–12 July 1999: Jerri Lin Nielsen, M.D., a physician at the Amundsen-Scott South Pole Station, self-biopsied a suspicious breast lump. Results were inconclusive, so the National Science Foundation decided to send additional test equipment and medications to the remote station by military transport.

Brigadier General John I. Pray, Jr., United States Air Force.
Brigadier General John I. Pray, Jr., United States Air Force.

Because of the extreme cold, adverse weather conditions and months of darkness, it was considered too dangerous for an aircraft to attempt landing at the South Pole. A United States Air Force Lockheed C-141B Starlifter of the 62nd Airlift Wing, McChord Air Force Base, Washington, was sent to stage out of Christchurch, New Zealand, in order to air drop the supplies at the South Pole. The mission was commanded by Lieutenant Colonel John I. Pray, Jr., U.S. Air Force.

Departing Christchurch at 2154 UTC, 11 July, with six pallets of medical supplies and equipment as well as fresh food and mail for the remote outpost, the C-141 was joined for the flight by a Boeing KC-135 Stratotanker from the 203rd Air Refueling Squadron, Hawaii National Guard, for inflight refueling. A refueling took place over McMurdo Station and then the Starlifter headed on toward the Pole.

A Boeing KC-135R Stratotanker prepares to refuel a Lockheed C-141B Starlifter. (Richard Seaman)

Amundsen-Scott station personnel set fire to 27 smudge pots arranged in a semi-circle to mark the drop zone, and turned off all outside lighting. When the transport arrived overhead, blowing snow obscured the drop zone and it took the aircrew, flying with night vision goggles, 25 minutes to locate the markers.

The first of six pallets of medical supplies airdropped by the U.S. Air force at Amundsen-Scott South Pole Station, 11 July 1999. (National Science Foundation)
The first of six pallets of medical supplies airdropped by the U.S. Air Force at Amundsen-Scott South Pole Station, 11 July 1999. (National Science Foundation)

At 2230 the C-141 flew over at an altitude of 700 feet (213.4 meters) and dropped two cargo pallets on the first pass and the remaining four on a second. It immediately departed to rendezvous with the KC-135 tanker and both returned to New Zealand.

After a 6,375 mile (10,260 kilometer) round trip, the C-141 touched down at Christchurch at 1225 UTC, 12 July.

Dr. Nielsen’s lump was cancerous. Using the medical supplies that had been air-dropped, she treated herself for the next three months. She was evacuated by air when a Lockheed LC-130H Hercules from the 109th Airlift Wing, New York Air National Guard, picked her up 16 October 1999.

Dr. Nielsen’s cancer eventually metastasized to her liver, bones and brain. Jerri Lin FitzGerald, M.D., died 23 June 2009 at her home in Southwick, Massachusetts.

Her husband, Thomas FitzGerald, said, “She fought bravely, she was able to make the best of what life and circumstance gave her, and she had the most resilience I have ever seen in anyone. She fought hard and she fought valiantly.”

Dr. Jerri Lin Nielsen, 1 March 1952–23 June 2009. (National Science Foundation)
Dr. Jerri Lin Nielsen, 1 March 1952–23 June 2009. (National Science Foundation)

© 2018, Bryan R. Swopes

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12 July 1980

The first McDonnell Douglas KC-10A Extender, 79-0433, in flight. The airplane is carrying civil registration N110KC rather than its U.S. Air Force serial number. (Boeing)

12 July 1980: The first McDonnell Douglas KC-10A Extender, serial number 79-0433, made its first flight at Long Beach, California with company test pilots Walt Smith and George Jansen, flight engineer Leo Hazell, and flight test engineer Guy Lowery.

Based on the DC-10-30CF commercial transport, this aerial tanker can carry 356,000 pounds of fuel (161,479 kilograms). Using a “flying boom” to refuel Air Force aircraft in flight, it also is equipped with “hose and drogue” system to refuel U.S. Navy and Marine airplanes. Both systems can be used simultaneously. The KC-10A can also carry cargo pallets, or combination of personnel and cargo.

McDonnell Douglas KC-10A Extender 79-0433 (N110KC) seen from above. (McDonnell Douglas)
McDonnell Douglas KC-10A Extender 79-0433 (N110KC) seen from above. (McDonnell Douglas)

The McDonnell Douglas KC-10A Extender is operated by a flight crew of four. It is 181 feet, 7 inches (54.347 meters) long with a wingspan of 165 feet, 4 inches (50.394 meters) and height of 58 feet, 7 inches (17.856 meters). The tanker has an empty weight of 241,027 pounds (109,328 kilograms) and maximum takeoff weight (MTOW) of 590,000 pounds (267,620 kilograms).

The KC-10A is powered by three commercial General Electric CF6-50C2 turbofan engines, flat-rated at 52,500 pounds of thrust (233.532 kilonewtons), each. The CF6-50C2 is a two-spool, high-bypass-ratio axial-flow turbofan engine. It has a single-stage fan, 17-stage compressor section (3 low- and 14 high-pressure stages), and a  6-stage turbine (2 high- and 4 low-pressure stages). The fan has a diameter of 86.0 inches (2.184 meters) and produces 73% of the engine’s total power at full rated thrust. The CF6-50C2 has a diameter of 105.0 inches (2.667 meters), a length of 183.0 inches (4.648 meters), and weighs 8,731 pounds (3,960.3 kilograms).

The KC-10A has a maximum speed of 0.89 Mach (619 miles per hour, 996 kilometers per hour). Its service ceiling is 42,000 feet (12,802 meters). Range is 4,400 miles (7,081 kilometers).

McDonnell Douglas KC-10A Extender 79-04333. (Mike Freer via Wikipedia)

Though over 400 of the original 732 Boeing KC-135 Stratotankers remain in service (the last one was accepted by the Air Force in 1964), the fleet of KC-10s provide greater fuel capacity and much longer range. Boeing had submitted a tanker version of its 747 commercial transport, however the KC-10 was selected primarily because it could operate from shorter runways. McDonnell Douglas built 60 KC-10s for the U.S. Air Force and 2 similar KDC-10s for The Netherlands.

Forty years later, McDonnell Douglas KC-10A 79-0433 is still in service.

McDonnell Douglas KC-10A Extender 79-0433. (Unattributed)
McDonnell Douglas KC-10A Extender 79-0433. (31st Aviano Tail Spotters Group)

© 2020, Bryan R. Swopes

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12 July 1957

President Eisenhower fastens his seat belt aboard H-13J-BF Sioux 57-2729, on the White House lawn, 12 July 1957. (U.S. Air Force)
Dwight David Eisenhower, President of the United States
Dwight David Eisenhower, 34th President of the United States

12 July 1957: President Dwight D. Eisenhower was the first United States president to fly in a helicopter when a U.S. Air Force H-13J-BF Sioux, serial number 57-2729 (c/n 1576), flown by Major Joseph E. Barrett, USAF, departed the White House lawn for Camp David, the presidential retreat in the Catoctin Mountains of Maryland. Also on board was a U.S. Secret Service special agent. A second H-13J, 57-2728 (c/n 1575), followed, carrying President Eisenhower’s personal physician and a second Secret Service agent.

The helicopter was intended to rapidly move the president from the White House to Andrews Air Force Base where his Lockheed VC-121E Constellation, Columbine III, would be standing by, or to other secure facilities in case of an emergency.

Major Barrett had been selected because of his extensive experience as a combat pilot. During World War II, he had flown the B-17 Flying Fortress four-engine heavy bomber. During the Korean War, Barrett had carried out a helicopter rescue 70 miles (113 kilometers) behind enemy lines, for which he was awarded the Silver Star.

Bell H-13J 57-2729, flown by Major Barret, with President eisenhower and a Secret Service agent, departs the White House for teh first time, 2:08 p.m., 12 July 1957. (The White House)
Bell H-13J 57-2729, flown by Major Joseph E. Barrett, with President Eisenhower and a Secret Service agent, departs the White House, 2:08 p.m., 12 July 1957. (The White House)

The two helicopters were manufactured by the Bell Helicopter Company at Fort Worth, Texas, and delivered to the Air Force at Wright-Patterson Air Force Base on 29 March 1957. The presidential H-13Js were nearly identical to the commercial Bell Model 47J Ranger. The H-13J differed from the civil Model 47J by the substitution of main rotor blades of all-metal construction in place of the standard laminated wood blades.

Capable of carrying a pilot and up to three passengers, the Ranger was constructed with an enclosed cabin built on a tubular steel framework with all-metal semi-monocoque tail boom. The main rotor diameter was 37 feet, 2.00 inches (11.328 meters) and tail rotor diameter was 5 feet, 10.13 inches (1.781 meters), which gave the helicopter an overall length of 43 feet, 3¾ inches (13.185 meters) with rotors turning. The height (to the top of the centrifugal flapping restraints) was 9 feet, 8 inches (2.946 meters). The helicopter had a maximum gross weight of 2,800 pounds (1,270 kilograms).

The main rotor, in common to all American-designed helicopters, rotates counter-clockwise as seen from above. (The advancing blade is on the helicopter’s right.) The anti-torque (tail) rotor is mounted to the right side of an angled tail boom extension, in a tractor configuration, and rotates counter-clockwise as seen from the helicopter’s left. (The advancing blade is above the axis of rotation.)

The main rotor is a two-bladed, under-slung, semi-rigid assembly that would be a characteristic of helicopters built by Bell for decades. The main rotor system incorporates a stabilizer bar, positioned below and at right angles to the main rotor blades. Teardrop-shaped weights are placed at each end of the bar, on 100-inch (2.540 meters) centers. The outside diameter of the stabilizer bar is 8 feet, 6.781 inches (2.611 meters). (A similar system is used on the larger Bell 204/205/212 helicopters.)

The H-13J was powered by an air-cooled, normally-aspirated 433.972-cubic-inch-displacement (7.112 liter) AVCO Lycoming VO-435-A1B (O-435-21) vertically-opposed 6-cylinder direct-drive engine. The VO-435 had a compression ration of 7.3:1. It was rated at 220 horsepower at 3,200 r.p.m., maximum continuous power, and 260 horsepower at 3,200 r.p.m. for takeoff. The VO-435-A1B weighed 393.00 pounds (178.262 kilograms).

Engine torque is sent through a centrifugal clutch to a 9:1 gear-reduction transmission, which drives the main rotor through a two-stage planetary gear system. The transmission also drives the tail rotor drive shaft, and through a vee-belt/pulley system, a large fan to provide cooling air for the engine.

Bell H-13J hovering over the White House lawn. (U.S. Air Force)
One of the two presidential Bell H-13J Sioux helicopters hovers over the White House lawn. (U.S. Air Force)

Fuel was carried in two gravity-feed tanks, mounted above and on each side of the engine. The total fuel capacity was 34.0 gallons (128.7 liters)

Cruise speed for the H-13J was 87–98 miles per hour (140–158 kilometers per hour), depending on gross weight, and its maximum speed was 105 miles per hour (169 kilometers per hour). The helicopter had a hover ceiling in ground effect (HIGE) of 8,100 feet (2,469 meters). The service ceiling was 15,000 feet (4,572 meters).

Both H-13J Sioux served as presidential aircraft until 1962. They were redesignated UH-13J and continued in use for VIP transportation until 1967.

Bell UH-13J-BF Sioux 57-2729 is in the collection of the Smithsonian Institution National Museum National Air and Space Museum, Steven V. Udvar-Hazy Center, while its sister ship, 57-2728, is at the National Museum of the United States Air Force, Wright-Patterson Air Force Base, Ohio, along with Columbine III.

The first presidential helicopter, USAF H-13J-BF Sioux 57-2729, on display at the Steven V. Udvar-Hazy Center, Smithsonian Institution National Air and Space Museum. (NASM)

© 2018, Bryan R. Swopes

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12 July 1936

Louise Thaden with the Porterfield Model 35-W. (FAI)

12 July 1936: Louise Thaden set a Fédération Aéronautique Internationale (FAI) World Record for Speed Over 100 Kilometers with an average speed of 176.35 kilometers per hour (109.58 miles per hour.)¹ She flew a Porterfield Model 35-W Flyabout over a course at Endless Caverns, near New Market, Virginia.

Less than two months later, 4 September 1936, Mrs. Thaden became he first woman to win the Bendix Trophy Race when she and her co-pilot, Blanche Noyes, flew a Beechcraft C17R “Staggerwing,” NR15835, from Floyd Bennett Field, Brooklyn, New York, to Mines Field, Los Angeles, California.

Harmon Aviatrix Trophy (NASM)

Iris Louise McPhetridge was born 12 November 1905 at Bentonville, Arkansas. She was the first of three daughters of Roy Fry McPhetridge, owner of a foundry, and Edna Hobbs McPhetridge. She was educated at the University of Arkansas at Fayetteville, as a member of the Class of 1927. Miss McPhetridge was president of the Delta Delta Delta (ΔΔΔ) Sorority, Delta Iota (ΔΙ) Chapter; head sports for basketball; and president of The Panhellenic.

Louise McPhetridge had been employed by Walter Beech as a sales representative at Wichita, Kansas, and he included flying lessons with her employment. She received her pilot’s license from the National Aeronautic Association, signed by Wilbur Wright, 16 May 1928. In 1929, she was issued Transport Pilot License number 1943 by the Department of Commerce. McPhetridge was the fourth woman to receive an Airline Transport Pilot rating.

Miss McPhetridge married Mr. Herbert von Thaden at San Francisco, California, 21 July 1928. Thaden was a former military pilot and an engineer. They would have two children, William and Patricia.

Louise Thaden served as secretary of the National Aeronautic Association, and was a co-founder of The Ninety-Nines. She served as that organization’s vice president and treasurer. She set several world and national records and was awarded the national Harmon Trophy as Champion Aviatrix of the United States in 1936.

Louise Thaden stopped flying in 1938. She died at High Point, North Carolina, 9 November 1979.

Louise Thaden flew this Porterfield Model 35-W to set a World Record for Speed, 12 July 1936. (FAI)

The Porterfield Model 35-W was based on the prototype Wyandotte Pup, which had been designed by Noel Ross Hockaday. The airplane was built by students of the aviation club of Wyandotte High School, Kansas City, Kansas.

Noel Hackaday’s Wyandotte Pup, NX12546, circa 1932. The children are identified as Leland and Milton House. (Guy F. House, via Keith House)

Hockaday had previously been a designer for the American Eagle Aircraft Corporation and had designed that company’s Eaglet high-wing monoplane. Edward Everette Porterfield, Jr., the founder of American Eagle, was present when the Wyandotte Pup made its first flight. He bought the airplane and its production rights. American Eagle had gone out of business during the early years of The Depression, and a new company, Porterfield Aircraft Corporation, was formed to manufacture the airplane as the Porterfield Model 35.

The Porterfield Model 35 Flyabout was produced in several variants, and was available with LeBlond, Velle, Warner or Continental engines. It was was a single-engine, high-wing monoplane, which carried a pilot and one passenger in tandem in an enclosed cabin. The airplane had fixed landing gear with a tail skid. The fuselage was a welded tube structure, while the wing was built around two spruce spars, with spruce and plywood ribs. The airplane was covered with doped fabric. A distinctive feature of the Porterfield series are the parallel wing struts. (Most similar aircraft have their struts arranged in a “V”.)

Porterfield Model 35-70 Flyabout, NC 20700, powered by a LeBlond radial engine. (San Diego Air & Space Museum)

The Porterfield Model 35-W was 22 feet, 1 inch (6.731 meters) long, with a wingspan of 32 feet, 0 inches (9.754 meters), and height of 6 feet, 7 inches (2.007 meters). The main wheel tread was 5 feet, 6 inches (1.676 meters). Maximum payload was 501 pounds (227.25 kilograms).

A 1936 Porterfield Model 35-W, NC16401, serial number 301. (San Diego Air & Space Museum)

The Model 35-W was powered by an air-cooled, normally-aspirated, 301.458-cubic-inch-displacement (4.940 liter) Warner Aircraft Corporation Scarab Junior. This was a 5-cylinder radial engine with two valves per cylinder and a compression ratio of 5.2:1. The Scarab Junior was rated at 90 horsepower at 2,050 r.p.m. at Sea Level for takeoff (five-minute limit). The engine was 1 foot, 2 inches (0.356 meters) long, 3 feet, 0.5 inches (0.927 meters) in diameter, and weighed 237 pounds (107.5 kilograms). The engine was covered by a Townend Ring.

The 35-W had a cruise speed of 110 miles per hour (177 kilometers per hour) and maximum speed of 120 miles per hour (193 kilometers per hour). Its range was 340 miles (547 kilometers).

Porterfield Aircraft Corporation built approximately 240 Model 35s. Twenty-five of these were the Model 35-W.

Noel Ross Hockaday was born 24 May 1905 in Kinmundy, Illinois. He was the first of two children of Jake Fred Hockaday, a farmer, and Mary Kathryn Sills Hockaday. He married to Ruby I. Kelley at Los Angeles, 31 March 1937.

In addition to the Eaglet and Pup, Hockaday designed the Rearwin Airplanes Inc., Speedster, Sportster and Cloudster. (Rearwin, like Porterfield, was based at Fairfax Airport, Kansas City, Kansas.)

In 1940, Hockaday worked for the Lockheed Aircraft Corporation. He later formed Hockaday Aircraft Corporation at Burbank, California, to produce the Hockaday Comet.

Noel Ross Hockaday died at Los Angeles, California, 26 May 1959, at the age of 54 years.

Edward Everett Porterfield, Jr., circa 1925. (Airplanes and Rockets)

Edward Everett Porterfield, Jr., was born at Kansas City, Missouri, 7 November 1890. He was the son of Edward Everett Porterfield, Sr.,² a state circuit court judge, and Julia L. Chick Porterfield.

E. E. Porterfield, Jr., was a manager for the New England Equitable Life Insurance Company in Kansas City. On 17 January 1911, he married Miss Margaret Hughes in Nebraska. They would have two sons, both of whom died in infancy. Mrs. Porterfield sued for divorce, charging that she had been abandoned. The divorce was granted and she was awarded $30.00 per month in financial support.

Porterfield enlisted in the United States Army, 4 March 1918, and served as a sergeant with the 314th Trench Mortar Battery, 164th Field Artillery Brigade, 89th Division, American Expeditionary Forces. The division fought at the Battle of St. Mihiel and in the Meuse-Argonne Offensive. The 89th was inactivated following the war. Sergeant Porterfield was honorably discharged, 20 February 1919.

Porterfield’s second wife was Margaret Jellison Porterfield. They also divorced.

In 1925, Porterfield founded the Porterfield Flying School at Richards Field, the first airport for Kansas City, Missouri. In 1928, he founded the American Eagle Aircraft Corporation at Fairfax Airport, Kansas City, Kansas.³

E. E. Porterfield married his third wife, Mildred Shiveley, at Odessa, Missouri, 25 December 1930.

Porterfield later founded the Porterfield Aircraft Corporation in 1932. During World War II, light aircraft production ceased and the company eventually went out of business.

Edward Everett Porterfield, Jr., died at Kansas City, Missouri, 29 August 1948, at the age of 58 years. He was buried at the Mount Washington Cemetery, Independence, Missouri.

Porterfield Model 35-70 Flyabout. (San Diego Air & Space Museum)

¹ FAI Record File Number 12022

² Full Disclosure: Judge Edward Everett Porterfield, Sr., a Kansas state circuit court judge, had an involvement in the infamous Dr. Hyde murders which took place at the Colonel Thomas H. Swope mansion near Independence, Missouri (State of Missouri v. Bennett Clarke Hyde, 1910). Colonel Swope was a distant relative of TDiA.

³ The Kansas City Metropolitan Area is divided by the Missouri River, which is the boundary between the State of Missouri and the State of Kansas. Therefore, there is a Kansas City, Missouri, and a Kansas City, Kansas.

© 2019, Bryan R. Swopes

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