Tag Archives: World Record for Speed Over a 15km/25km Straight Course

12 April 1963

Lockheed TF-104G Starfighter N104L, World Speed Record holder. (Lockheed)
Lockheed TF-104G Starfighter N104L, World Speed Record holder. (Lockheed Martin)

12 April 1963: At Edwards Air Force Base, California, Jacqueline (“Jackie”) Cochran, Colonel, U.S. Air Force Reserve, established a Fédération Aéronautique Internationale (FAI) World Speed Record when she flew a two-place Lockheed TF-104G Starfighter, FAA registration N104L, over a 15-to-25 kilometer (9.32/15.53 miles) straight course at an average speed of 2,048.88 kilometers per hour (1,273.115 miles per hour).¹

Jackie Cochran wrote about flying the 15/25 kilometer straight course in her autobiography:

     Picture in your mind a rectangular tunnel, 300 feet high, a quarter of a mile wide, and extending 20 miles long through the air at an altitude of 35,000 feet. I had to fly through that tunnel at top speed without touching a side. There were no walls to see but radar and ground instruments let me know my mistakes immediately. Up there at 35,000 feet the temperature would be about 45 degrees below zero. Not pleasant but perfect for what I was doing. Inside the plane you are hot because of the friction of speeding through the air like that. The cockpit was air-conditioned, but when you descend, things happen so fast the plane’s air-cooling system can’t keep up with it. I was always hot and perspiring back on the ground.

Jackie Cochran: An Autobiography, by Jacqueline Cochran and Maryann Bucknum Brinley, Bantam Books, New York 1987, Page 314.

N104L was retained by Lockheed for use as a customer demonstrator to various foreign governments. In 1965 Lockheed sold N104L to the Dutch Air Force, where it served as D-5702 until 1980. It next went to the Turkish Air Force, remaining in service until it was retired in 1989.

Jackie Cochran with the Lockheed TF-104G Starfighter N104L, World Record Holder. (FAI)
Jackie Cochran with the Lockheed TF-104G Starfighter N104L, World Record Holder. (FAI)

¹ FAI Record File Number 13042

© 2018, Bryan R. Swopes

9 April 1951

Jackie Cochran with her North American Aviation P-51C Mustang, N5528N, circa December 1949. (FAI)

9 April 1951: Jackie Cochran set a Fédération Aéronautique Internationale (FAI) world record and National Aeronautic Association U.S. National Record on 9 April 1951, flying her North American Aviation P-51C Mustang, N5528N, to an average speed of 464.374 miles per hour (747.338 kilometers per hour) over a straight 16 kilometer (9.942 miles) high-altitude course at Indio, California.¹

National Aeronautic Association Certificate of Record in the San Diego Air and Space Museum Archive. (Bryan R. Swopes)
National Aeronautic Association Certificate of Record in the San Diego Air and Space Museum Archive. (Bryan R. Swopes)

Thunderbird was Jackie Cochran’s third P-51 Mustang. She had purchased it from Academy Award-winning actor and World War II B-24 wing commander James M. Stewart, 19 December 1949. It was painted cobalt blue with gold lettering and trim.

That same day, Jackie Cochran flew her new airplane to two Fédération Aéronautique Internationale (FAI) World Records for Speed Over a 500 kilometer Closed Circuit Without Payload, and a U.S. National Aeronautic Association record, with an average speed of  703.275 kilometers per hour (436.995 miles per hour).

Thunderbird had won the 1949 Bendix Trophy Race from Rosamond Dry Lake, California, to Cleveland Municipal Airport, Ohio, with pilot Joe De Bona in the cockpit.

According to Civil Aviation Administration records, N5528N had been “assembled from components of other aircraft of the same type.” It has no USAAC serial number or North American Aviation serial number. The CAA designated it as a P-51C and assigned 2925 as its serial number. It was certificated in the Experimental category and registered N5528N.

Thunderbird, Jackie Cochran’s North American P-51C Mustang, N5528N, circa 1951. (FAI)

The North American Aviation P-51 Mustang is a single-place, single-engine long range fighter. It is a low-wing monoplane with retractable landing gear and is of all-metal construction. The fighter is powered by a liquid-cooled V-12 engine. It was originally produced for the United Kingdom’s Royal Air Force as the Mustang Mk.I. Two examples were provided to the U.S. Army Air Corps, designated XP-51. This resulted in orders for the P-51A and A-36 Apache dive bomber variant. These early Mustangs were powered by the Allison V-1750 engine driving a three-bladed propeller, which also powered the Lockheed P-38 Lightning and Curtiss P-40 Warhawk.

In 1942, soon after the first production Mustang Mk.I arrived in England, Rolls-Royce began experimenting with a borrowed airplane, AM121, in which they installed the Supermarine Spitfire’s Merlin 61 engine. This resulted in an airplane of superior performance.

In the United States, the Packard Motor Car Company of Detroit, Michigan, had begun building Merlin engines under license from Rolls-Royce. These American engines were designated V-1650. North American modified two P-51s from the production line to install the Packard V-1650-3. These were designated XP-51B. Testing revealed that the new variant was so good that the Army Air Corps limited its order for P-51As to 310 airplanes and production was changed to the P-51B.

The P-51B and P-51C are virtually Identical. The P-51Bs were built by North American Aviation, Inc., at Inglewood, California. P-51Cs were built at North American’s Dallas, Texas plant. They were 32 feet, 2.97 inches (9.829 meters) long, with a wingspan of 37 feet, 0.31-inch (11.282 meters) and overall height of 13 feet, 8 inches (4.167 meters) high. The fighter had an empty weight of 6,985 pounds (3,168 kilograms) and a maximum gross weight of 11,800 pounds (5,352 kilograms).

A Packard Motor Car Company V-1650-7 Merlin liquid-cooled, supercharged SOHC 60° V-12 aircraft engine at the Smithsonian Institution National Air and Space Museum. This engine weighs 905 pounds (411 kilograms) and produces 1,490 horsepower at 3,000 r.p.m. (NASM)
Packard Motor Car Company V-1650-7 Merlin, liquid-cooled, supercharged SOHC 60° V-12 aircraft engine at the Smithsonian Institution National Air and Space Museum. This engine weighs 905 pounds (411 kilograms) and produces 1,490 horsepower at 3,000 r.p.m. (NASM)

P-51Bs and Cs were powered by a right-hand tractor, liquid-cooled, supercharged, 1,649-cubic-inch-displacement (27.04-liter) Packard V-1650-3 or -7 Merlin single overhead cam (SOHC) 60° V-12 engine which produced 1,380 horsepower at Sea Level, turning 3,000 r.p.m at 60 inches of manifold pressure (V-1650-3) or 1,490 horsepower at Sea Level, turning 3,000 r.p.m. at 61 inches of manifold pressure (V-1650-7). (Military Power rating, 15 minute limit.) These were license-built versions of the Rolls-Royce Merlin 63 and 66. The engine drove a four-bladed Hamilton Standard Hydromatic constant-speed propeller with a diameter of 11 feet, 2 inches (3.404 meters) through a 0.479:1 gear reduction.

North American Aviation P-51B-1-NA Mustang in flight. (Air Force Historical Research Agency)

The P-51B/C had a cruise speed of 362 miles per hour (583 kilometers per hour) and the maximum speed was 439 miles per hour (707 kilometers per hour) at 25,000 feet (7,620 meters). The service ceiling was 41,900 feet (12,771 meters). With internal fuel, the combat range was 755 miles (1,215 kilometers).

In military service, armament consisted of four air-cooled Browning AN-M2 .50-caliber machine guns, mounted two in each wing, with 350 rounds per gun for the inboard guns and 280 rounds per gun for the outboard.

1,988 P-51B Mustangs were built at North American’s Inglewood, California plant and another 1,750 P-51Cs were produced at Dallas, Texas. This was nearly 23% of the total P-51 production.

North American Aviation P-51B-1-NA Mustang 43-12491 at NACA Langley Field, Virginia, 1945. (NSAS)
North American Aviation P-51B-1-NA Mustang 43-12491 at NACA Langley Field, Virginia, 1945. (NASA)

¹ FAI Record File Number 4477

² FAI Record File Numbers 4476, 12323

© 2019, Bryan R. Swopes

Jacqueline Auriol (5 November 1917–11 February 2000)

Jacqueline Auriol devant le Mystère IV, en juillet 1955. L’avion a servi de modèle au collier vendu aux enchères mardi 13 mai 2014 à Genève. [AP Photo/Str – Keystone]
Jacqueline Marie-Thérèse Suzanne Douet was born 5 November 1917 at Challans, Vendée, France. She was the daughter of Edmund Pierre Victor Douet, a ship builder, and Suzanne Jeanne Chevy. She attended school in Nantes, then studied art at L’École du Louvre, Paris.

On 26 February 1938, Paul Auriol, the son of Vincent Jules Auriol, who was later the first president of France’s Fourth Republic, married Mlle Douet. They would have two sons. The couple divorced, 12 November 1965, but re-married, 24 Jan 1987.

During World War II, Paul and Jacqueline worked with La Résistance française, fighting against the German invaders and the Vichy government of France.

After taking a flight with Commander Raymond Guillaume, Mme Auriol was determined to learn to fly. She earned a private license in 1948.

Jacqueline Auriol, 1947 (Ministère de la Culture – Médiathèque du Patrimoine, Dist. RMN-Grand Palais / Studio Harcourt)

July 1949, Jacqueline Auriol was severely injured in crash of a Société de construction aeronavale (SCAN) 30 seaplane (a license-built Grumman G-44A Widgeon), on the Seine at Les Mureaux. She required 14 operations at the Foch Hospital to repair the damage to her face, followed by 8 more operations performed by Dr. John Marquis Converse at the Manhattan Eye, Ear and Throat Hospital in the United States.

In 1950, Jacqueline Auriol qualified as a French military pilot. She was then accepted as a test pilot for Société des Avions Marcel Dassault.

While in the United States for continued medical treatment, Mme Auriol trained as a helicopter pilot at the Bell Aircraft Company plant at Buffalo, New York. After only 23 flight hours in a Bell Model 47, she was awarded her helicopter pilot certificate, 23 January 1951. Larry Bell, president of the company, said that she was “the most extraordinary woman in the world. She has met fear head-on and conquered it. She has a complete passion for flying.” She became the eighth member of Whirly-Girls, the international association of women helicopter pilots.

Jacqueline Auriol and instructor Dick Buyers in the cockpit of a Bell Model 47D helicopter, N153B, Buffalo, New York, 23 January 1951. (Airport Journals)

On 12 May 1951, Mme Auriol flew a Goblin-powered de Havilland DH.100 Vampire to set a Fédération Aéronautique Internationale (FAI) world record for speed over a given distance of 100 kilometers (62.14 statute miles), averaging  818.18 km/h (505.39 m.p.h.). ¹ She broke the existing record, 703.38 km/h (437.06 m.p.h.) set 29 December 1949 by Jacqueline Cochran of the United States with a North American Aviation P-51C Mustang. ² For her record flight, Mme Auriol was named Chevalier de la légion d’honneur. Harry S. Truman, President of the United States, presented her with the Harmon International Aviatrix Trophy, 18 November 1951.

Jacqueline Auriol in the cockpit of a SNCASE SE 535 Mistral. (Flying Review)

On 21 December 1952, at Istres, France, Mme Auriol flew a license-built variant of the de Havilland DH.100 Vampire FB.53 fighter bomber—the Société nationale des constructions aéronautiques du Sud-Est (SNCASE) SE 535 Mistral—to set an FAI World Record for Speed Over 100 Kilometers Without Payload, at 855,92 km/h (531.84 m.p.h.). ³ The aircraft was equipped with a Hispano-built Rolls-Royce Nene 104 turbojet engine. Mme Auriol won a second Harmon Trophy.

President Trumna presents the Harmon Trophy to Jacqueline Auriol.

On 31 May, 1955, Mme Auriol set a World Record for Speed Over a 15km/25km (9.3–15.5 statute miles) Straight Course, flying the prototype Dassault Mystère IV N interceptor. Her speed averaged 1 151 km/h (715 m.p.h.). ⁴ Again she broke a speed record set by Jackie Cochran with a prototype Canadair Sabre Mk.3. ⁵ For this flight, she was promoted to Officier de la Légion d’honneur, 31 October 1956. She was awarded a third Harmon Trophy, which was presented by President Dwight Eisenhower, 23 October 1956. Her record-setting Mystère IV N is on display at the Conservatoire l’Air et l’Espace d’Acquitane, Bordeaux Merignac Airport, France.

Dassault Mystère IV N 01 F-ZXRM, right side profile. (© Collection Pyperpote)

Flying a delta-wing Dassault Mirage III C, at Istres, 22 June 1962, Jacqueline Auriol averaged 1 850,2 km/h (1,149.7 m.p.h.) to set an FAI  World Record for Speed Over 100 Kilometers Without Payload. ⁵

Jacqueline Auriol climbs out of the cockpit of a Dassault Mirage IIIC. (Joyeux Magazine)

The following year, 14 June 1963, Mme Auriol flew the reconnaissance version, the Dassault Mirage III R, over a 100 kilometer course at an average speed of 2 038,70 km/h (1,266.79 m.p.h.). This set her fifth FAI speed record. ⁷ She was the first woman to exceed Mach 2.

Jacqueline Auriol flew this Dassault Mirage III R, 307, to an FAI world speed record, 14 June 1963. (Archives Musee BA 102 – Collection Particuliere)
Jacqueline Auriol (1917-2000), aviatrice française. Remise du Record international féminin (14 juin 1963) par Jacques Allez, directeur de l’Aéroclub de France. Paris, janvier 1964.

In 1965, Mme Auriol set two world speed records while flying the prototype Dassault Aviation Mystère-Falcon 20 business jet, F-WLKB. On 15 May, she averaged 819,13 km/h (508.98 m.p.h.) over a 2000-kilometer (1,242.7 statute miles) closed circuit, ⁸  and on 10 June, over a 1000-kilometer circuit (621.4 miles), 859,51 km/h (534.08 m.p.h.). ⁹

Jacqueline Auriol steps off the Dassault Aviation Mystère-Falcon 20.

On 28 December 1979, Jacqueline Auriol was promoted to Commandeur de la Légion d’honneur, and 13 July 1992, to Grand officier de la Légion d’honneur.

She was awarded the Grand-croix Ordre National du Merite, 14 May 1957.

Mme Jacqueline Marie-Thérèse Suzanne Douet Auriol died at Hotel-de-Ville, Paris, 11 February 2000. Her remains were interred at the cemetery in Ville de Muret, France

Jacqueline Auriol, 1956. (Association Amicale des Essais en Vol/CEV Brétigny)

“Now I know that only life and death are important. When I am in the air, close to both, things finally take on their proper perspective. Nonsense becomes nonsense. The big things stand out, become alive.”

—Jacqueline Auriol

¹ FAI Record File Number 10834

² FAI Record File Numbers 4476 and 12323

³ FAI Record File Number 12462

⁴ FAI Record File Number 9074

⁵ FAI Record File Number 8870

⁶ FAI Record File Number 12391

⁷ FAI Record File Number 12392

⁸ FAI Record File Number  9073

⁹ FAI Record File Number  1351

© 2022, Bryan R. Swopes

21 January–8 February 1971

A Lockheed P-3C Orion (Mass Communications Specialist 2nd Class John Herman, U.S. Navy)
Lockheed P-3C-225-LO Orion, Bu. No. 162775, of Patrol Squadron Four (VP-4), similar to the record-setting airplane flown by CDR Lilienthal and his crew, 22 January–8 February 1971. (Mass Communications Specialist 2nd Class John Herman, U.S. Navy)

21 January–8 February 1971: A Lockheed P-3C Orion antisubmarine warfare patrol bomber, Bu. No. 156512, under the command of Commander Donald H. Lilienthal, United States Navy, took off from Naval Air Station Atsugi, Japan, at 23:30 UTC, Thursday, 21 January (8:30 a.m., 22 January, Japan Time), and flew 11,036.47 kilometers (6,857.75 statute miles), non-stop, to NATC Patuxent River, Maryland. The airplane landed at 8:51 a.m., Eastern Standard Time (13:51 UTC), Friday, 22 January. The duration of the flight was 15 hours, 21 minutes.

This was a new Fédération Aéronautique Internationale (FAI) world distance record for turboprop airplanes.¹ The Orion’s course deviated around foreign airspace so the actual distance flown was 7,010 miles (11,218.5 kilometers).

Photograph of CDR Lilienthal and LCDR Stoodley with their P-3C, 156521. (JAX AIR NEWS-LATWINGER, 19 February 1971, Page 15.)
Photograph of CDR Lilienthal and LCDR Stoodley with their P-3C, 156512. (JAX AIR NEWS-LATWINGER, 19 February 1971, Page 15.)

For the long distance flight the Orion carried a flight crew of seven: Commander Donald H. Lilienthal, Aircraft Commander; Captain R.H. Ross, Pilot; Lieutenant Commander F. Howard Stoodley, Pilot; Lieutenant R.T. Myers, Navigator; Commander J.E. Koehr, Meteorologist; Chief Aviation Machinist’s Mate K.D. Frantz, Flight Engineer; and Chief Aviation Electrician’s Mate H.A. Statti, Flight Engineer.

A Lockheed P-3C Orion patrol bomber. (U.S. Navy)
A Lockheed P-3C Orion patrol bomber. (Lockheed Martin via Code One Magazine)

On Wednesday, 27 January 1971, the same airplane set both FAI and National Aeronautic Association records for Speed Over a Straight Course of 15/25 Kilometers of 806.10 kilometers per hour (500.89 miles per hour) at NAS Patuxent River.²

The U.S. National Record still stands:

Screen Shot 2015-01-27 at 19.47.13

On February 4, at Edwards Air Force Base in the high desert of Southern California, Commander Lilienthal flew 156512 to a World Record for Altitude in Horizontal Flight of 13,721.5 meters (45,018.1 feet).³

On 8 February 1971, while till at Edwards AFB, Commander Lilienthal and 156512 set five more world records for heavy turboprop airplanes. The P-3C climbed to a height of 3,000 meters (9,843 feet) in 2 minutes, 52 seconds ⁴ ; to 6,000 meters (19,685 feet) in 5 minutes, 46 seconds ⁵ ; to 9,000 meters (29, 528 feet) in 10 minutes, 26 seconds ⁶ ; and 12,000 meters (39,370 feet) in 19 minutes, 42 seconds.⁷ The Orion continued climbing until it reached a world record altitude of 14,086.1 meters (46,214.2 feet). ⁸

For his record-setting flights, Commander Lilienthal was awarded the Distinguished Flying Cross.

Lockheed Model 188 Electra prototype, N1881, at Lockheed Air Terminal, Burbank, California, 1957 (Robert Reedy Collection/San Diego Air & Space Museum Archives)

The record-setting airplane was a Lockheed Model 285A P-3C-110-LO Orion, Bu. No. 156512, LAC serial number 5506, built by the Lockheed-California Company at Burbank, California. The Orion was completed 14 August 1969. It was assigned to the Naval Air Test Center at NAS Patuxent River, Maryland. The Orion was a standard production P-3C with no engine or fuel system modifications.

The Lockheed P-3 Orion was developed from the Model 188 Electra—a four-engine turboprop airliner which first flew in 1957—primarily as a long-range anti-submarine warfare and maritime surveillance aircraft. The P-3 has been adapted to many other missions. The P-3C variant in U.S. Navy service is usually operated by a crew of 11.

The bomber is 116 feet, 10 inches (35.611 meters) long with a wingspan of 99 feet, 8 inches (30.378 meters) and overall height of 34 feet, 3 inches (10.439 meters). It has a zero-fuel weight of 77,200 pounds (35,017 kilograms) and a normal maximum takeoff weight of 135,000 pounds (61,235 kilograms) (Overload Takeoff: 139,780 pounds/63,403 kilograms).

The P-3C is powered by four Allison T56-A-14 turboprop engines which produce 4,591 shaft horsepower at 13,820 r.p.m., each. They drive four-bladed Hamilton-Standard 54H60-77 constant-speed propellers with a diameter of 13 feet, 5¾ inches (4.109 meters) at 1,020 r.p.m. The T56-A-14 is a single-shaft axial-flow turboprop engine, with a 14-stage compressor section, six combustors, and a 4-stage turbine. The engine is 12 feet, 2.3 inches (3.716 meters) long, 4 feet, 1.0 inches (1.245 meters) in diameter and weighs 1,885 pounds (855 kilograms).

The P-3C can remain airborne for 16 hours.

There is a wide variety of sensors board the P-3. Sonobuoys can be dropped from the belly. A Magnetic Anomaly Detector, the “MAD boom” is mounted at the tail of the aircraft.

The Orion caries no defensive weapons. It can carry bombs, depth charges, torpedoes, mines, air-to-surface and anti-ship missiles, and nuclear weapons.

Hunter and prey. A U.S. Navy Lockheed P-3C Orion escorts a nuclear-powered Soviet Victor-III attack submarine. (U.S. Navy)
Hunter and prey. A U.S. Navy Lockheed P-3C-205-LO Orion, Bu. No. 161339, escorts a Soviet Victor I (Project 671) nuclear-powered attack submarine. (U.S. Navy)

More than 750 P-3 Orions and its variants were built by Lockheed and licensee Kawasaki Heavy Industries between 1961 and 1996. In addition to the U.S. Navy and various Federal government agencies, the Lockheed P-3 Orion remains in service worldwide with more than twenty countries.

Lockheed P-3C-110-LO Orion Bu. No. 156512 served as a test aircraft at Patuxent River until 15 July 1974. It was then assigned to VP-31 where it remained for over nine years, carrying the squadron identification marking RP and the numeral 9. It later served with VP-9, VP-46, VP-65, VP-16 and finally, VP-45. 156512 was placed in long-term storage at Davis-Monthan Air Force Base, Tucson, Arizona, in 1995, and was scrapped in 2004.

A Lockheed P-3C Orion of Patrol Squadron Sixty-Five (VP-65) (PG 06)  at NAS Point Mugu (NTD), on the southern coastline of California, 28 March 1993. Photographed by Vance Vasquez. (San Diego Air & Space Museum)
Midshipman D. H. Lilienthal (The 1955 Lucky Bag)

Donald Herman Lilienthal was born 6 February 1931 at Pope, Minnesota. He was the fourth child of Frederick R. Lilienthal, a steam railway worker, and Bertha Camille Metlie Lilienthal. He attended Glenwood High School, Glenwood, Minnesota, graduating in 1949. He then studied mathematics at the University of Minnesota, before accepting an appointment as a midshipman at the United States Naval Academy at Annapolis, Maryland, in 1951.

Midshipman Lilienthal graduated from Annapolis and was commissioned an ensign, United States Navy, 3 June 1955. He was then trained as a pilot. Later, he graduated from the United States Naval Test Pilot School at NAS Patuxent River, Maryland.

In June 1958, Lieutenant (j.g.) Lilienthal married Miss Jeanne L. Murphy, in Duval County, Florida. They had three children, Karen, John and Donald, Jr. They divorced in March 1975.

Lieutenant (j.g.) Lilienthal was promoted to the rank of lieutenant 1 July 1959, and to lieutenant commander, 1 July 1964. He advanced to commander on 1 July 1969.

Commander Donald H. Lilienthal, United States Navy

Commander Lilenthal retired from the United States Navy in December 1975 after 20 years of service as an antisubmarine warfare pilot and test pilot. He later worked as a consultant to the aviation industry.

Commander Lilienthal married Mrs. Jimena Rosa Goich Recavrren, a widow, in Arlington, Virginia, 17 September 1982. They divorced 3 December 1993 in Fairfax, Virginia.

Commander Donald Herman Lilienthal, United States Navy (Retired) passed away at Loudon, Virginia, 21 August 2014 at the age of 83 years. He is buried at Arlington National Cemetery, Arlington, Virginia.

A Lockheed P-3B Orion, Bu. No. 153451, Patrol Squadron 17, off Ohau, 1976. (PH2 (AC) Westhusing, U. S. Navy)
A Lockheed P-3B-90-LO Orion, Bu. No. 153451, of Patrol Squadron 17, off Oahu, Hawaiian Islands, 1976. (PH2 (AC) Westhusing, U. S. Navy)

¹ FAI Record File Number 8070

² FAI Record File Number 8582

³ FAI Record File Number 8476

⁴ FAI Record File Number 3400

⁵ FAI Record File Number 3401

⁶ FAI Record File Number 3402

⁷ FAI Record File Number 3403

⁸ FAI Record File Number 8055

© 2019, Bryan R. Swopes

5 February 1962

Lieutenant Robert W. Crafton, U.S. Navy, and Captain Louis K. Keck, U.S. Marine Corps, with the record-setting Sikorsky HSS-2 Sea King. (FAI)
Lieutenant Robert W. Crafton, U.S. Navy, and Captain Louis K. Keck, U.S. Marine Corps, with the record-setting Sikorsky HSS-2 Sea King. (FAI)

5 February 1962: A Sikorsky HSS-2 Sea King (later redesignated SH-3A) became the world’s fastest helicopter by establishing a Fédération Aéronautique Internationale (FAI) world speed record for helicopters of 339 kilometers per hour (210.645 miles per hour) over a 19 kilometer (11.8 mile) course between Milford and New Haven, Connecticut.¹ The pilots were Lieutenant Robert Wiley Crafton, United States Navy and Captain Louis K. Keck, United States Marine Corps. Both pilots were awarded the Distinguished Flying Cross and the American Helicopter Society’s Frederick L. Feinberg Award.

Having served the United States Navy for 45 years, the Sea King is still in service world-wide, most notably as the VH-3D “Marine One” presidential helicopter.

Sikorsky HSS-2 Sea King, Bu. No. 147xxx, modified for the speed record attempt. (FAI)
Sikorsky HSS-2 Sea King, Bu. No. 147xxx, modified for the speed record attempt. (FAI)

The Sikorsky HSS-2 Sea King was the first of the S-61 series of military and civil helicopters. It is a large twin-engine helicopter with a single main rotor/tail rotor configuration. The fuselage is designed to allow landing on water. The XHSS-2 made its first flight 11 March 1959. The helicopter was originally used as an anti-submarine helicopter.

The HSS-2 is 72 feet, 6 inches (22.098 meters) long and 16 feet, 10 inches (5.131 meters) high with all rotors turning. The helicopter’s width, across the sponsons, is 16 feet. The main rotors and tail can be folded for more compact storage aboard aircraft carriers, shortening the aircraft to 46 feet, 6 inches (14.173 meters). The empty weight of the HSS-2 is 10,814 pounds (4,905 kilograms). The overload gross weight is 19,000 pounds (8,618 kilograms).

The main rotor has five blades and a diameter of 62 feet, 0 inches (18.898 meters). Each blade has a chord of 1 foot, 6¼ inches (0.464 meters). The rotor blade airfoil was the NACA 0012, which was common for helicopters of that time. The total blade area is 222.5 square feet (20.671 square meters), and the disc area is 3,019 square feet (280.474 square meters). The tail rotor also has five blades and a diameter of 10 feet, 4 inches (3.150 meters). They each have a chord of 7–11/32 inches (0.187 meters). At 100% NR, the main rotor turns 203 r.p.m. and the tail rotor, 1,244 r.p.m.

The HSS-2 was powered by two General Electric T58-GE-6 turboshaft engines, which had a Normal Power rating of 900 horsepower, and Military Power rating of 1,050 horsepower; both ratings at 19,555 r.p.m. at Sea Level. The main transmission was rated for 2,000 horsepower, maximum. (Later models were built with more powerful T58-GE-8 engines. Early aircraft were retrofitted.)

The HSS-2 has a cruise speed of 125 knots (144 miles per hour/232 kilometers per hour) at Sea Level, and a maximum speed of 133 knots (153 miles per hour/246 kilometers per hour) at Sea Level. The service ceiling is 12,100 feet (3,688 meters). The hover ceiling at normal gross weight is 5,200 feet (1,585 meters), out of ground effect (HOGE), and 7,250 feet (2,210 meters), in ground effect (HIGE). The HSS-2 had a combat endurance of 4 hours and a maximum range of 500 nautical miles (575 statute miles/926 kilometers).

The Sea King was primarily an anti-submarine aircraft. It could be armed with up to four MK 43 or MK 44 torpedoes and one MK 101 nuclear-armed depth bomb. Other weapons loads included four MK 14 depth charges and four MK 54 air depth bombs.

In 1962, the HSS-2 was redesignated SH-3A Sea King. Many early production aircraft have remained in service and have been upgraded through SH-3D, SH-3G, etc. In addition to the original ASW role, the Sea Kings have been widely used for Combat Search and Rescue operations. Marine One, the call sign for the helicopters assigned to the President of the United States, are VH-3D Sea Kings. Sikorsky produced the last S-61 helicopter in 1980, having built 794. Production has been licensed to manufacturers in England, Italy, Canada and Japan. They have produced an additional 679 Sea Kings.

Captain Louis K. Keck, USMC (left), and Lieutenant Robert W. Crafton, U.S. Navy, in the cockpit of their Sikorsky HSS-2 Sea King. (U.S. Navy NH69960)

¹ FAI Record File Number 13121

© 2019, Bryan R. Swopes