Tag Archives: Turbocharger

28 September 1921

Lieutenant John A. Macready dressed for high altitude flight. (U.S. Air Force)
First Lieutenant John A. Macready dressed for high altitude flight. (U.S. Air Force)
Lieutenant John A. Macready, Air Service, United States Army. (U.S. Air force)
Captain John Arthur Macready, Air Service, United States Army, circa 1918. (U.S. Air Force)

28 September 1921: At McCook Field, Ohio, First Lieutenant John Arthur Macready, Air Service, United States Army, flew a turbo-supercharged Packard Lepère L USA C. II biplane, serial number S.C. 40015, to a world record altitude of 40,800 feet (12,436 meters). However, the official Fédération Aéronautique Internationale (FAI) is 10,518 meters (34,518 feet.)¹ He won his first of three Mackay Trophies for this flight.

John A. Macready graduated from Stanford University in 1913 with a degree in economics. He enlisted in the Aviation Section, Signal Corps, U.S. Army, as a Private 1st Class, 16 July 1917. On 27 December 1917, he was commissioned as a 1st lieutenant in the Aviation Section, Signal Officers Reserve Corps. Lieutenant Macready became a flight instructor at Brooks Field, Texas, where he wrote the standard instructional text. On 11 October 1918, Lieutenant Macready was promoted to the rank of captain. After World War I, he became an engineering test pilot at McCook Field near Dayton, Ohio. He reverted to his permanent rank of first lieutenant, 18 September 1920. In 1923, Macready graduated from the Aeronautical Engineer Course, Air Service Engineering School.

For six years John Macready was responsible for testing turbosuperchargers, which enabled aircraft engines to produce continuous power at increasing altitudes. It was while testing these that he established his altitude record.

Lt. John A. Macready with his Packard Lepère L USA C.II. (San Diego History Center)

During a 35 hour, 18 minute endurance flight at Rockwell Field, San Diego, California, 5–6 October 1922, John Macready and Oakley G. Kelly pioneered the use of inflight refueling from another aircraft. Also, he and Kelly made the first non-stop transcontinental flight when they flew a Fokker T-2 across the United States from Roosevelt Field, Long Island, New York, to Rockwell Field in 26 hours, 50 minutes, 38.6 seconds, 2–3 May 1923. Macready won his second and third Mackay Trophies for these achievements. He is the only man to have won it three times.

The Packard Lepère L USA C.II was a World War I biplane designed by French aeronautical engineer Captain Georges Lepère and built by the Packard Motor Car Company of Detroit, Michigan. It was to have been a two-place fighter, light bomber and observation aircraft armed with four machine guns.

The Packard Lepère was 25 feet, 3-1/8 inches (7.699 meters) long. The upper and lower wings had an equal span of 41 feet, 7¼ inches (12.681 meters), and equal chord of 5 feet, 5¾ inches (1.670 meters). The vertical gap between the wings was 5 feet, 5/8-inch (1.527 meters) and the lower wing was staggered 2 feet, 15/16-inch (0.633 meters) behind the upper wing. The wings’ incidence was +1°. Upper and lower wings were equipped with ailerons, and had no sweep or dihedral. The height of the Packard Lepère, sitting on its landing gear, was 9 feet, 7 inches (2.921 meters). The Packard Lepère had an empty weight of 2,561.5 pounds (1,161.9 kilograms) and its gross weight was 3,746.0 pounds (1,699.2 kilograms).

The fuselage was a wooden structure with a rectangular cross section. It was covered with three layers of veneer, (2 mahogany, 1 white wood) with a total thickness of 3/32-inch (2.38 millimeters). The fuselage had a maximum width of 2 feet, 10 inches (0.864 meters) and maximum depth of 4 feet, 0 inches (1.219 meters).

The wings were also of wooden construction, with two spruce spars and spruce ribs. Three layers of wood veneer covered the upper surfaces. Heavy bracing wires were used. These had an airfoil cross-section and actually provided additional lift. The interplane struts were unusual in that they were fully-framed units.

The Packard Lepère was powered by a water-cooled, normally-aspirated, 1,649.336-cubic-inch-displacement (27.028 liter) Liberty L-12 single overhead cam (SOHC) 45° V-12 engine with a compression ratio of 5.4:1. The Liberty produced 408 horsepower at 1,800 r.p.m. The L-12 as a right-hand tractor, direct-drive engine and it turned turned a two-bladed, fixed-pitch wooden propeller. The Liberty 12 was 5 feet, 7.375 inches (1.711 meters) long, 2 feet, 3.0 inches (0.686 meters) wide, and 3 feet, 5.5 inches (1.054 meters) high. It weighed 844 pounds (383 kilograms).

The engine coolant radiator was positioned horizontally in the center section of the Lepère’s upper wing. Water flowed through the radiator at a rate of 80 gallons (303 liters) per minute.

Packard Lepère LUSAC 11 P53, left profile. The turbocharger is mounted above the propeller driveshaft.
Packard Lepère L USA C.II S.C. 40015, McCook Field project number P53, left profile. The turbocharger’s turbine housing is mounted above the propeller driveshaft. (U.S. Air Force)

The Packard Lepère had a maximum speed of 130.4 miles per hour (209.9 kilometers per hour) at 5,000 feet (1,524 meters), 127.6 miles per hour (205.4 kilometers per hour) at 10,000 feet (3,048 meters), 122.4 miles per hour (197.0 kilometers per hour) at 15,000 feet (4,572 meters), 110.0 miles per hour (177.0 kilometers per hours) at 18,000 feet (5,486 meters) and 94.0 miles per hour (151.3 kilometers per hour) at 20,000 feet (6,096 meters). Its cruising speed was 112 miles per hour (180 was kilometers per hour). The airplane could climb to 5,000 feet in 4 minutes, 24 seconds, and to 20,000 feet in 36 minutes, 36 seconds. In standard configuration, the Packard Lepère had a service ceiling of 20,200 feet (6,157 meters). Its range was 320 miles (515 kilometers).

The fighter’s armament consisted of two fixed M1918 Marlin .30-caliber aircraft machine guns mounted on the right side of the fuselage, synchronized to fire forward through the propeller arc, with 1,000 rounds of ammunition, and two M1918 Lewis .30-caliber machine guns on a flexible mount with 970 rounds of ammunition.

The Air Service had ordered 3,525 of these airplanes, but when the War ended only 28 had been built. The contract was cancelled.

Six Packard Lepères were used for flight testing at McCook Field, Dayton, Ohio, assigned project numbers P 44, P 53, P 54, P 65, P 70 and P 80. One of these, flown by Major Rudolph W. Schroeder, set two Fédération Aéronautique Internationale (FAI) World Records for Altitude at 9,455 meters (31,020 feet), 18 September 1918.² On 6 September 1919, Schroeder flew a Packard Lepère to 8,616 meters (28,268 feet) while carrying a passenger. This set two more World Altitude Records.³ Flying P 53, A.S. 40015, he set a fifth FAI altitude record of 10,093 meters (33,114 feet), 27 February 1920.⁴ On 28 September 1921, Captain John A. Macready flew P 53 to an altitude of 40,800 feet (12,436 meters). On 13 October 1922, 1st Lieutenant Theodore J. Koenig flew P 53 to win the Liberty Engine Builders’ Trophy Race at Selfridge Field, near Mount Clemens, Michigan. Koenig completed ten laps of the triangular racecourse in 2:00:01.54, at an average speed of 128.8 miles per hour (207.3 kilometers per hour).

The only Packard Lepère in existence, serial number A.S. 42133, is in the collection of the National Museum of the United States Air Force, Wright-Patterson Air Force Base, Ohio.

Lieutenant John A Macready flew this turbosupercharged Packard Lepère L USA C.II, S.C 40015, McCook Field project number P53, to an altitude of 40,800 feet, 28 September 1921. (U.S. Air Force)
Barograph chart showing Lieutenant Macready’s record altitude of 40,800 feet (12,192 meters), 28 September 1921. (Sally Macready Wallace via www.earlyaviators.com)

¹FAI Record File Number 8381

²FAI Record File Number 15463

³ FAI Record File Number 15671

⁴ FAI Record File Number 8229

© 2017, Bryan R. Swopes

17 March–12 May 1964: Joan Merriam Smith

Joan Merriam Smith, with her Piper PA-23-160 Apache E, N3251P, photographed 23 January 1965. (Los Angeles Public Library, Valley Times Collection)

At 1:00 p.m., 17 March 1964, Joan Merriam Smith departed Oakland International Airport, on California’s San Francisco Bay, on what would be the first leg of an around-the world flight. Her first stop would be Tucson, Arizona, approximately 650 nautical miles (1,200 kilometers) to the east-southeast.

Mrs. Smith intended to follow the easterly route of Amelia Earhart, who had departed from Oakland on both of her attempts at the around-the-world flight. The first try, 17 March 1937, was a westerly route, with a first stop at Hawaii. The second try, 2 June 1937, was an eastbound route.

The two routes were planned to take advantage of seasonal weather patterns.

Mrs. Smith wanted to follow Earhart’s eastbound route, but by leaving in mid-March, she put herself at a disadvantage with respect to the weather she would encounter as she traveled around the Earth.

Unlike Earhart, who had two of the world’s foremost navigators in her flight crew, Mrs. Smith would fly alone, her only companion a small teddy bear. She would navigate by pilotage and ded reckoning, and by using radio aids such as non-directional beacons (NDBs) and VHF omnidirectional ranges (VORs).

Joan Ann Merriam Smith loading a teddy bear into her 1958 Piper PA-23-160 Apache E, N3251P. Note the auxiliary fuel tank in the cabin. (Calisphere)

Forecast adverse weather caused her to leave Tucson for her next stop, New Orleans, Louisiana, at 2:00 a.m., 18 March. Dodging the weather, she was forced to make an intermediate fuel stop at Lubbock, Texas. She finally arrived in New Orleans at 4:00 p.m. that afternoon. After another early morning start, she flew on to Miami, Florida, on 19 March.

A detailed story of Joan Merriam Smith’s flight is told in Fate on a Folded Wing, written by Tiffany Ann Brown.¹ Her route followed Earhart’s eastward across the United States; south over the Caribbean Sea to South America; then across the South Atlantic Ocean; Africa, Asia, and finally, to the Pacific Ocean, where Mrs. Smith’s route diverged from Earhart’s.

Smith’s itinerary:  Across the United States from Oakland, California, to Tucson, Arizona; Lubbock, Texas; New Orleans, Louisiana; Miami, Florida. Then over the Caribbean Sea to San Juan, Paramaribo, Natal; east across the South Atlantic to Dakar, Gao, Fort-Lamy, Al-Fashir, Khartoum, Aden. From Africa, Smith headed into South Asia: Karachi, Calcutta, Akyab, Rangoon; and then Southeast Asia: Bangkok, Singapore, Jakarta, Surabaya, Kupang; Darwin, Northern Territory, Australia; and Lae, New Guinea. From here, Smith deviated from Earhart’s route across the Pacific Ocean by flying to Guam instead of Howland Island; then Wake Island; Midway Island; Honolulu, Hawaii; and, finally Oakland.

Mrs. Smith’s flight was troubled by adverse weather, leaking fuel tanks, out-of-calibration radio equipment, a recalcitrant autopilot, problems with the hydraulic and electrical systems, and a heater that would not work. And weather. . .

She arrived back at Oakland International at 9:12 a.m., on 12 May 1964, having flown approximately 27,750 miles (44,659 kilometers). The total duration of her journey was 55 days, 20 hours, 12 minutes. She had flown 35 legs on 23 days. Mrs. Smith wrote that the circumnavigation had taken a total of 170 flight hours, with 47 hours on instruments and 26 hours of night time.

Joan Merriam Smith is credited with having made the first solo circumnavigation of the Earth by the Equatorial route, and the longest solo flight.

Joan Merriam Smith with her Piper PA-23-160 Apache E, N3251P, “City of Long Beach.” (UCLA Library Special Collections, Charles E. Young Research Library)

The airplane flown by Joan Merriam Smith was a Piper PA-23-160 Apache E, serial number 23-1196, U.S. registration N3251P, which she had named City of Long Beach. The red and white airplane was manufactured by the Piper Aircraft Corporation at Lock Haven, Pennsylvania, in 1958. It had been purchased by the State of Illinois Department of Aeronautics to use checking state-owned aeronautical facilities. When the the state acquired a faster aircraft, the Apache was sold in November 1963. The Federal Aviation Administration issued a registration certificate to Mrs. Smith on 30 December 1963.

The Piper PA-23-160 Apache E was a 4-place, twin-engine, light airplane with retractable tricycle landing gear. It was 27 feet, 2 inches (8.280 meters) long with a wingspan of 37 feet, 0 inches (11.278 meters) and overall height of 10 feet, 1 inch (3.073 meters). The airplane had an empty weight of 2,230 pounds (1,011.5 kilograms) and maximum gross weight of 3,800 pounds (1,723.7 kilograms).

Joan Merriam Smith’s 1958 Piper PA-23-160 Apache E, N3251P, “City of Long Beach.” (Les Clark/Photovault.com)

The Apache E was powered by two air-cooled, normally-aspirated, 319.749-cubic-inch-displacement (5.240 liter) Lycoming O-320-B horizontally-opposed 4-cylinder overhead valve (OHV) engines with a compression ratio of 8.5:1. The O-320-B is a direct-drive, right-hand tractor engine, rated at 160 horsepower at 2,700 r.p.m. The O-320-B is 2 feet, 5.56 inches (0.751 meters) long, 2 feet, 8.24 inches (0.819 meters) wide and 1 foot, 10.99 inches (0.584 meters) high. It weighs 278 pounds (126.1 kilograms). The engines turned two-bladed Hartzell constant-speed propellers.

N3251P’s engines were modified with Rajay Co., Inc., Turbo 200 turbochargers.

Piper PA-23-160 Apache E, N3251P. (Detail from image at Fate on a Folded Wing)

The PA-23-160 had a cruise speed of 150 knots (173 miles per hour/278 kilometers per hour) and maximum speed was 159 knots (183 miles per hour/295 kilometers per hour). The service ceiling was 17,000 feet (5,182 meters).

During a flight from Las Vegas, Nevada, to Long Beach, 9 January 1965, the cabin heater in the nose of the Apache caught fire. With the cabin filled with smoke and gasoline fumes, and unable to reach any airport, Mrs. Smith crash-landed the airplane in rocky terrain in the Ord Mountains, southeast of Barstow in the high desert of southern California. After it has slid to a stop, N3251P continued to burn and was largely destroyed. Mrs. Smith and her passenger, Willam Harry Eytchison, were slightly injured.

At the time of the accident, N3251P had just under 3,000 hours total time on the airframe (TTAF), and less than 400 hours on new engines (TSN).

The burned out wreck of Joan Merriam Smith’s Piper PA-23-160 Apache E, N3251P. (Image from Fate on a Folded Wing)

Joan Ann Merriam was born 3 August 1936 at Oceanside, Long Island, New York, U.S.A. She was the daughter of Arthur Ray Merriam, Jr., a railroad office stenographer, and Ann Marie Lofgren Merriam. The family relocated to Wayne, Michigan, where Joan attended Jefferson Junior High School and Wayne High School.

Joan Ann Merriam, Wayne High School, 1952. (Spectator)

Joan’s father died at the age of 43, New Year’s Day, 1952. She and her mother then moved to Miami, Florida. Flying from Detroit to Miami aboard a Lockheed Constellation, Joan was allowed to visit the flight deck and speak to the crew.

The airline flight sparked an interest in aviation. She began taking lessons at the age of 15. Joan learned to fly at the Embry-Riddle Aeronautical Institute, then located at at Tamiami Airport. She first soloed an airplane at the age of 16 years. On 7 November 1953, shortly after her 17th birthday, she was issued private pilot certificate. Special permission was obtained from the FAA for her to take the written exams for commercial pilot before she turned 18.

Joan graduated from Miami Senior High School in 1954.

The prototype Cessna 140, NC77260, circa 1946. (Cessna Aircraft Company)
“JOAN MERRIAM Pretty Pilot” (23 December 1953)

Mrs. Merriam gave Joan a Cessna 140, a single-engine light airplane, making her one of the youngest people in the United States to own an airplane. Joan said that her mother was “the bravest passenger,” as she practiced all of the maneuvers required for a commercial pilot’s license. By the time she was 18, she earned a commercial pilot certificate with an instrument rating, and a flight instructor certificate. She began instructing at Tamiami. She flew charters from Florida to Texas, living in that state before moving to Panama City, Florida. On her twenty-third birthday, the earliest that she was eligible, Miss Merriam was issued an airline transport pilot certificate (ATP) by the FAA. She had flown nearly 5,000 hours.

Miss Merriam would later own a Piper Cub modified for aerobatics, a second Cessna 140, and a Cessna 172.

In the fall of 1955, Miss Merriam married Harold MacDonald, a student in aeronautical engineering. She worked as a flight instructor for Avex, Inc., at Tamiami Airport. Mr. and Mrs. MacDonald soon divorced.

Joan Ann Merriam, circa 1958.

In 1960, Miss Merriam was living in Panama City, Florida, where she was employed as a pilot for West Florida Natural Gas Company, one of very few women who flew as corporate pilots at the time. (Contemporary newspapers reported that she was “one of three women corporation pilots in the country.”) Reflecting the sexist attitudes of the time, news features often described her as a “blue-eyed platinum blonde,” and made mention of “her personal aerodynamic attributes.” In an interview, Miss Merriam said that a major reason preventing more women from executive flying were, “executive’s wives, and executive’s secretaries.”

She had met Lieutenant (j.g.) Marvin G. (“Jack”) Smith, Jr., U.S. Navy, in 1958. Lieutenant Smith was executive officer of USS Vital (MSO-474), an Agile-class minesweeper homeported at Panama City. She moved to San Leandro, California, and worked as a contract instrument flight instructor at Oakland International Airport for the Sixth United States Army, which was then based at the Presidio of San Francisco.

Miss Merriam and Lieutenant Smith were married at Monterey, California, 23 September 1960. The couple later moved to Long Beach, where Lieutenant Commander Smith’s next ship, USS Endurance (AM-435), was homeported.

Prototype 1960 Cessna 182D Skylane, c/n 51623, N2323G. This airplane is very similar to that flown by Joan Merriam Smith on 17 February 1965. (Cessna Aircraft Company)

In February 1965, Joan Merriam Smith was flying for Rajay Industries out of Long Beach, California. (Rajay was a turbocharger manufacturer which had supplied the turbos for Mrs. Smith’s Apache.) She had been conducting functional and reliability tests on a modified Cessna 182C Skylane, N8784T. The airplane was owned by the V. E. Kuster Co., of Long Beach, a supplier of oil field equipment.

The flight test plan for 17 February 1965 called for the Cessna to be flown at altitudes between 5,000 and 23,000 feet (1,524–7,010 meters). Mrs. Smith was flying. Also on board was her biographer, Beatrice Ann (“Trixie”) Schubert.

Smith was flying across the San Gabriel Mountains, which divide southern California’s coastal plain from the high desert. The highest peak in the range, Mount San Antonio, which was not far east of her course, rises to 10,046 feet (3,062 meters).

The San Gabriel Mountains of southern California, viewed from the south in winter. (Photo by Mark Rightmire, Orange County Register/SCNG)

Witnesses said that the airplane had been flying normally, estimated at between 1,000 and 2,000 feet (305–610 meters) above the mountainous terrain, when the right wing folded back along the fuselage. The airplane, with the engine revving, went into a dive and crashed into the north slope of Blue Ridge, a few miles west of Wrightwood, California, 10–12 seconds later. There was an explosion and fire.

Joan Merriam Smith and Trixie Ann Schubert were killed.

Investigators found that both wings had failed outboard of the struts. The outer wing panels, both ailerons and the left elevator were located approximately 1½ miles (2½ kilometers) from the point of impact. Examination showed that the aircraft had suffered severe loads. “There was no evidence of fatigue or failure of the aircraft before the inflight structural failure.”

The Civil Aeronautics Board reported the Probable Cause: “The pilot entered an area of light to moderate turbulence at high speed, during which aerodynamic forces exceeding the structural strength of the aircraft caused in-flight structural failure.” According to the CAB, the Cessna 182 had an airspeed in excess of 190 miles per hour (306 kilometers per hour) when it entered the area of turbulence.

Her remains were interred at Forest Lawn Memorial Park, Cypress, California.

(Scott Wilson/Find a Grave)
Harmon Aviatrix Trophy (NASM)

For her accomplishment, Joan Merriam Smith was posthumously awarded the Harmon Aviatrix Trophy for 1965. At a ceremony held in the Indian Treaty Room of the Executive Office Building, 15 December 1965, the trophy was presented to her husband, Lieutenant Commander Marvin G. Smith, Jr., by Vice President Hubert Humphrey.

Mrs. Smith had intended to attempt an altitude record with the turbocharged Skylane. On 20 July 1965, her husband, Marvin G. Smith, set the record at 10,689.6 meters (35,070.9 feet), flying a Cessna 210A Centurion with an IO-470 engine.²

TDiA would like to thank Ms. Tiffany Ann Brown for suggesting this subject, and for her invaluable contribution.

¹ Fate on a Folded Wing: The True Story of Pioneering Solo Pilot Joan Merriam Smith, by Tiffany Ann Brown. Lucky Bat Books, 2019.

² FAI Record File Number 9977 (Class C, Sub-Class C1c: powered airplanes, takeoff weight 1000 to 1750 kg).

© 2020, Bryan R. Swopes