Captain Chester R. Radcliffe, Jr., United States Air Force (FAI)
5 July 1962: Captain Chester R. Radcliffe, Jr., United States Air Force, flew Kaman HH-43B-KA Huskie 60-0263 from Hill Air Force Base, Utah, to Springfield, Minnesota, a distance of 1,429.80 kilometers (888.44 miles). This established a new Fédération Aéronautique Internationale (FAI) World Record for Distance Without Landing.¹
Captain Chet Radcliffe (right of center, wearing L-2B flight jacket) is congratulated on completion of the flight. The man in the white shirt is Kaman Aircraft Company Chief Test Pilot Francis Andrew Foster. (U.S. Air Force)
This same helicopter, flown by Captain Walter G. McMeen, set an FAI World Record for Altitude with a 1000 kilogram Payload to an altitude of 8,037 meters (26,368 feet) over the Kaman plant at Bloomfield, Connecticut, 25 May 1961.² On 18 October 1961, again at Bloomfield, Lieutenant Colonel Francis M. Carney set a World Record for Altitude Without Payload when he flew 60-0263 to 10,010 meters (32,841 feet).³ The following week, on 24 October 1961, Colonel Carney set six more world records, flying the HH-43B to 3,000 meters (9,853 feet) in 2 minutes, 41.5 seconds;⁴ 6,000 meters (19,685 feet) in 6 minutes 49.3 seconds;⁵ and to 9,000 meters (29,528 feet) in 14 minutes, 31 seconds.⁶ The following summer, Captain Richard H. Coan set an FAI World Record for Distance Over a Closed Circuit Without Landing when he flew 1,055.16 kilometers (655.65 miles) at Mono Lake, California, 13 June 1962.⁷
Kaman HH-43B Huskie 60-263. (FAI)
A turboshaft engine drove a unique system of counter-rotating and intermeshing rotors to provide lift, thrust and directional control. The counter-rotation cancelled the torque effect so no anti-torque, or tail, rotor was necessary. This allowed all of the engine’s power to drive the main rotor system.
The Huskie was used by the U.S. Air Force, U.S. Navy and Marine Corps, primarily for short range rescue operations. It was operated by two pilots and two rescue crewmen.
The fuselage of the H-43B was 25 feet, 2 inches (7.671 meters) long. Each rotor had a diameter of 47 feet, 0 inches (14.326 meters). It’s height was 15 feet, 6½ inches (4.737 meters). The helicopter’s empty weight was 4,470 pounds (2,028 kilograms) and its maximum gross weight was 8,800 pounds (3,992 kilograms).
The H-43B was powered by one Lycoming T53-L-1B turboshaft engine, rated at 860 shaft horsepower at 21,510 r.p.m. The engine uses a 5-stage axial-flow, 1 stage centrifugal-flow, compressor with a single stage gas producer turbine and single-stage power turbine. A reverse-flow combustion section allows significant reduction in the the engine’s total length. The power turbine drives the output shaft through a 3.22:1 gear reduction. The T53-L-1 is 3 feet, 11.8 inches (1.214 meters) long and 1 foot, 11.0 inches (0.584 meters) in diameter. It weighs 460 pounds (209 kilograms).
The Huskie’s economical cruise speed was 98 miles per hour (158 kilometers per hour), and the maximum speed was 120 miles per hour (193 kilometers per hour). Its hover ceiling out of ground effect (HOGE) was 18,000 feet (5,486 meters), and in ground effect (HIGE) was 20,000 feet (6,096 meters) and it had a range of 235 miles (378 kilometers).
With the call sign Pedro, the HH-43 was a rescue helicopter that served in combat during the Vietnam War.
The record-setting Kaman HH-43B Huskie 60-0263 was last assigned to Detachment 3, 42nd Aerospace Rescue and Recovery Squadron, Kirtland Air Force Base, New Mexico. It is in the collection of the National Museum of the United States Air Force, Wright-Patterson Air Force Base, Ohio. Its distance record still stands.
Kaman HH-43B-KA Huskie 60-0263 at the National Museum of the United States Air Force. (U.S. Air Force)
21 June 1972: Aérospatiale Chief Test Pilot Jean Boulet set a Fédération Aéronautique Internationale (FAI) Absolute World Record for helicopters by flying the first Aérospatiale SA 315 Lama, serial number 315-001, to an altitude of 12,442 meters (40,820 feet) from Aérodrome d’Istres, northwest of Marseille, France.¹ He also set two class and sub-class world records.² These records remain current.
The SA 315B Lama was designed to perform at the very high altitudes and temperatures necessary for service with the Indian Army. It combined an SE.3130 Alouette II airframe with a much more powerful Turboméca Astazou IIIB turboshaft engine—derated to 550 shaft horsepower—and the rotor system, transmission and gearboxes from the larger 7-place Alouette III.
Jean Boulet in the cockpit of his SA 315 Lama, just prior to his record flight. (Airbus)
The record-setting helicopter was modified by removing all equipment that was not needed for the record flight attempt. Various instruments and the co-pilot and passengers seats were taken out of the cockpit, as well as the helicopter’s synchronized horizontal stabilizer and tail rotor guard. The standard fuel tank was replaced with a very small tank holding just 70 kilograms (approximately 22.7 gallons) of jet fuel. Turboméca modified the engine to increase the output shaft r.p.m. by 6%. After Jean Boulet started the turbine engine, mechanics removed the battery and starter motor to decrease the weight even further.
Final preparations for the altitude record attempt. Jean Boulet sits in the cockpit, wearing an oxygen mask. (Helico-Fascination)
In just 12 minutes, the Lama had climbed to 11,000 meters (36,089 feet). As he approached the peak altitude, the forward indicated airspeed had to be reduced to 30 knots (34.5 miles per hour, 55.6 kilometers per hour) to prevent the advancing main rotor blade tip from reaching its Critical Mach Number in the thin air, which would have resulted in the blade stalling. At the same time, the helicopter was approaching Retreating Blade Stall.
When the helicopter could climb no higher, Boulet reduced power and decreased collective pitch. The Turboméca engine, not calibrated for the very high altitude and cold temperature, -62 °C. (-80 °F.), flamed out. With no battery and starter, a re-start was impossible. Boulet put the Lama into autorotation for his nearly eight mile descent. Entering multiple cloud layers, the Plexiglas bubble iced over. Because of the ice and clouds, the test pilot had no outside visibility. Attitude instruments had been removed to lighten the helicopter. Boulet looked up through the canopy at the light spot in the clouds created by the sun, and used that for his only visual reference until he broke out of the clouds.
Still in autorotation, the SA 315 missed touching down exactly on its takeoff point, but was close enough that FAI requirements were met.
Aérospatiale SA 315 Lama, FAI World Record Holder, 12,442 meters, in autorotation, just before touching down at at Istres, 21 June 1972. (Helico-Fascination)
Two days earlier, 19 June 1972, Boulet and fellow test pilot Gérard Boutin had set another FAI World Record for Altitude Without Payload, when they flew the Lama to 10,856 meters (35,617 feet).³ This record also still stands.
Jean Boulet and Gérard Boutin in the cockpit of SA 315B s/n 315-001. (Airbus)
The SA 315B Lama is a 5-place light turboshaft-powered helicopter which is operated by a single pilot. The helicopter was built to meet the specific needs of the Indian Air Force for operations in the Himalayan Mountains. It was required to take off an land at an altitude of 6,000 meters (19,685 feet) while carrying a pilot, one passenger and 200 kilograms (441 pounds) of cargo.
The fuselage is 10.26 meters (33 feet, 7.9 inches) long. With all rotors turning, the helicopter has an overall length of 12.92 meters (42 feet, 4.7 inches) and height of 3.09 meters (10 feet, 1.7 inches). The SA 315B has an empty weight of 1,021 kilograms (2,251 pounds) and a maximum gross weight of 1,950 kilograms (4,299 pounds). With an external load carried on its cargo hook, the maximum gross weight is 5,070 pounds (2,300 kilograms).
The three-bladed, fully-articulated main rotor has a diameter of 11.02 meters (36 feet, 1.9 inches). It turns clockwise, as seen from above. (The advancing blade is on the left side of the helicopter.) Normal main rotor speed, NR, is 350–360 r.p.m. The three-bladed anti-torque tail rotor is 1.91 meters (6 feet, 3.2 inches) in diameter and turns clockwise, as seen from the helicopter’s left side. (The advancing blade is below the axis of rotation.) It turns at 2,020 r.p.m.
The Lama was initially powered by a Turboméca Artouste IIIB (later aircraft, Artouste IIIB1) turbo-moteur. This is a turboshaft engine with a two-stage compressor section (1 axial-flow, 1 centrifugal-flow stages), and a three-stage axial-flow turbine. The engine turns 33,500 r.p.m. and the output drive shaft turns 5,773 r.p.m. The Artouste IIIB1 produces a maximum 870 horsepower, but is derated to 570 horsepower for installation in the Lama. The engine is 1.815 meters (5 feet, 11.5 inches) long, 0.667 meters (2 feet, 2.3 inches) high and 0.520 meters (1 foot, 8.5 inches) wide. It weighs 178 kilograms (392 pounds).
The helicopter has a cruise speed 103 knots (191 kilometers per hour, 119 miles per hour) and a maximum speed of 113 knots (209 kilometers per hour, 130 miles per hour) at Sea Level. The service ceiling is 5,400 meters (17,717 feet). At 1,950 kilograms (4,299 pounds), the Lama has a hover ceiling in ground effect (HIGE) of 5,050 meters (16,568 feet), and out of ground effect (HOGE), 4,600 meters (15,092 feet).
Société nationale des constructions aéronautiques du Sud-Est became Aérospatiale in 1970. The company produced the SA 315B Lama beginning in 1971. It was also built under license by Hundustan Aeronautics in India and Helibras in Brazil.
The total number of SA 315Bs and its variants built is uncertain. In 2010, Eurocopter, the successor to Aérospatiale, announced that it will withdraw the Lama’s Type Certificate in 2020.
The world-record-setting Aérospatiale SA 315B Lama, F-BPXS, serial number 315-001, lifting an external load on its cargo hook, 18 May 1980. (Kenneth Swartz)
After setting the world altitude record, 315-001 was returned to the standard configuration and assigned registration F-BPXS. It crashed at Flaine, a ski resort in the French Alps, 23 February 1985.
Jean Boulet with a SNCASE SE.3130 Alouette II.Médaille de l’Aéronautique
Jean Ernest Boulet was born 16 November 1920, in Brunoy, southeast of Paris, France. He was the son of Charles-Aimé Boulet, an electrical engineer, and Marie-Renée Berruel Boulet.
He graduated from Ecole Polytechnique in 1940 and the Ecole Nationale Supérieure de l’aéronautique In 1942. (One of his classmates was André Edouard Turcat, who would also become one of France’s greatest test pilots.)
Following his graduation, Boulet joined the Armée de l’Air (French Air Force)and was commissioned a sous-lieutenant. He took his first flight lesson in October. After the surrender of France to the Nazi invaders, Boulet’s military career slowed. He applied to l’Ecole Nationale Supérieure de l’Aéronautique in Toulouse for post-graduate aeronautical engineering. He completed a master’s degree in 1943.
During this time, Boulet joined two brothers with LaResistance savoyarde, fighting against the German invaders as well as French collaborators.
In 1943, Jean Boulet married Mlle. Josette Rouquet. They had two sons, Jean-Pierre and Olivier.
In February 1945, Sous-lieutenant Boulet was sent to the United States for training as a pilot. After basic and advanced flight training, Bouelt began training as a fighter pilot, completing the course in a Republic P-47D Thunderbolt. He was then sent back to France along with the other successful students.
On 1 February 1947 Jean Boulet joined Société nationale des constructions aéronautiques du Sud-Est (SNCASE) as an engineer and test pilot. He returned to the United States to transition to helicopters. Initially, Boulet and another SNCASE pilot were sent to Helicopter Air Transport at Camden Central Airport, Camden, New Jersey, for transition training in the Sikorsky S-51. An over-enthusiastic instructor attempted to demonstrate the Sikorsky to Boulet, but lost control and crashed. Fortunately, neither pilot was injured. Boulet decided to go to Bell Aircraft at Niagara Falls, New York, where he trained on the Bell Model 47. He was awarded a helicopter pilot certificate by the U.S. Federal Aviation Administration, 23 February 1948.
Test pilot Jean Boulet (center), with Mme. Boulet and the world-record-setting SE.3130 Alouette II, 1955. (HELIMAT)Officier de l’Legion de Honneur
As a test pilot Boulet made the first flight in every helicopter produced by SNCASE, which would become Sud-Aviation and later, Aérospatiale (then, Eurocopter, and now, Airbus Helicopters).
While flying a SE 530 Mistral fighter, 23 January 1953, Boulet entered an unrecoverable spin and became the first French pilot to escape from an aircraft by ejection seat during an actual emergency. He was awarded the Médaille de l’Aéronautique.
Jean Boulet was appointed Chevalier de la légion d’honneur in 1956, and in 1973, promoted to Officier de la Légion d’honneur.
Jean Boulet had more than 9,000 flight hours, with over 8,000 hours in helicopters. He set 24 Fédération Aéronautique Internationale world records for speed, distance and altitude. Four of these are current.
Jean Boulet wrote L’Histoire de l’Helicoptere: Racontée par ses Pionniers 1907–1956, published in 1982 by Éditions France-Empire, 13, Rue Le Sueuer, 75116 Paris.
Jean Ernest Boulet died at Aix-en-Provence, in southern France, 15 February 2011, at the age of 90 years.
¹ FAI Record File Number 11657: Class: E (Rotorcraft): Sub-Class: E-Absolute (Absolute Record of class E)
² FAI Record File Number 753: Altitude Without Payload: Sub-Class: E-1b (Helicopters: take off weight 500 to 1000 kg). FAI Record File Number 754: Altitude Without Payload: Sub-Class: E-1 (Helicopters).
³ FAI Record File Number 788: Altitude Without Payload: Sub-Class E-1c.
Lieutenant Clyde Everett Lassen, United States Navy
The MEDAL OF HONOR to
Lieutenant Clyde E. Lassen, United States Navy
For service as set forth in the following
CITATION
For conspicuous gallantry and intrepidity at the risk of his life above and beyond the call of duty on 19 June 1968 as pilot and aircraft commander of a search and rescue helicopter, attached to Helicopter Support Squadron Seven, Detachment One Hundred Four, embarked in USS Preble (DLG 15), during operations against enemy forces in North Vietnam.
Launched shortly after midnight to attempt the rescue of two downed aviators, Lieutenant (then Lieutenant, Junior Grade) Lassen skillfully piloted his aircraft over unknown and hostile terrain to a steep, tree-covered hill on which the survivors had been located.
Although enemy fire was being directed at the helicopter, he initially landed in a clear area near the base of the hill, but, due to the dense undergrowth, the survivors could not reach the helicopter. With the aid of flare illumination, Lieutenant Lassen successfully accomplished a hover between two trees at the survivor’s position. Illumination was abruptly lost as the last of the flares were expended, and the helicopter collided with a tree, commencing a sharp descent.
Expertly righting his aircraft and maneuvering clear, Lieutenant Lassen remained in the area, determined to make another rescue attempt, and encouraged the downed aviators while awaiting resumption of flare illumination. After another unsuccessful, illuminated, rescue attempt, and with his fuel dangerously low and his aircraft significantly damaged, he launched again and commenced another approach in the face of the continuing enemy opposition.
When flare illumination was again lost, Lieutenant Lassen, fully aware of the dangers in clearly revealing his position to the enemy, turned on his landing lights and completed the landing. On this attempt, the survivors were able to make their way to the helicopter. Enroute to the coast, Lieutenant Lassen encountered and successfully evaded additional hostile antiaircraft fire and, with fuel for only five minutes of flight remaining, landed safely aboard USS Jouett (DLG 29).
His courageous and daring actions, determination, and extraordinary airmanship in the face of great risk sustain and enhance the finest traditions of the United States Naval Service.
Lieutenant (Junior Grade) Clyde Everett Lassen was the Officer in Charge of Detachment 104 of Helicopter Support Squadron SEVEN (HC-7), the “Sea Devils,” aboard USS Preble (DLG-15). The assignment was Combat Search and Rescue.
McDonnell F-4J-31-MC Phantom II, Bu. No. 153856, of Fighter Squadron Thirty-Three (VF-33) “Tarsiers,” lands aboard USS America (CVA-66) circa 1968. This Phantom is a squadron mate of Root Beer 210. (U.S.Navy)
On the night of 18/19 June 1968, a flight of three aircraft from the aircraft carrier USS America (CV-66) were on a bombing mission over North Vietnam. Root Beer 210 was a McDonnell Douglas F-4J-33-MC Phantom II, Bu. No. 155546, flown by Lieutenant Commander John “Claw” Holtzclaw and Lieutenant Commander John A. “Zeke” Burns. Shortly after midnight, two SA-2 surface to air missiles were fired at the Phantom. Holtzclaw and Burns evaded them, but a third missile detonated very close to the fighter bomber, destroying the outer one-third of the right wing. With their airplane critically damaged and on fire, the two naval aviators were forced to eject over enemy territory. They parachuted into a rice paddy and could hear enemy soldiers talking nearby. Burns had suffered a broken leg as well as other injuries.
USS Preble (DLG-15), a Farragut-class guided missile frigate. (U.S. Navy)
Aboard the guided missile frigate USS Preble (DLG-15), Lieutenant (junior grade) Clyde Lassen and his flight crew were awakened and assigned to rescue the crew of Root Beer 210, 70 miles (113 kilometers) away in total darkness. Lassen and his co-pilot, Lieutenant (j.g.) LeRoy Cook and gunners Aviation Electrician’s Mate 2nd Class (AE2) Bruce Dallas and Aviation Machinist’s Mate 3rd Class (ADJ3) Don West, took off from Preble at 0022 hours aboard their Kaman SH-2A Seasprite helicopter, call sign Clementine Two, and were vectored by radar to the location of the downed aircrew. The glow of the burning Phantom could be seen from 30 miles (48 kilometers) away. They arrived on scene at 0141 hours. Holtzclaw and Burns were in immediate need of rescue as the enemy was closing in.
The crew of Clementine Two, left to right, Lt. (j.g.) Clyde E. Lassen, AE2 Bruce Dallas, ADJ3 Don West, Lt. (j.g.) C. LeRoy Cook. (U.S. Navy)
Holtzclaw and Burns were on a hillside covered with very tall trees, making it impossible for the Seasprite to land. Parachute flares dropped by supporting aircraft illuminated the area. The pickup would have to be made using a “jungle penetrator” attached to the helicopter’s rescue hoist. But the single-engine helicopter was already fully loaded with its four-man crew and their weapons and ammunition. It could not pick up both fliers while hovering out of ground effect above the trees. Lassen ordered his co-pilot to dump fuel to reduce the weight.
As Lassen hovered into position to make the hoist pickup, the overhead flares went out, leaving the jungle totally dark. Unable to see, Lassen collided with a tree causing damage to the horizontal stabilizer and the right side cabin door. He narrowly avoided a crash.
Clementine Two moved away while they awaited the arrival of another flare aircraft. They were soon engaged by enemy ground fire and the helicopter gunners returned fire with their M-60 machine guns.
On several occasions, Lassen landed the SH-2A in a rice paddy to pickup Holtzclaw and Burns, but enemy gunfire prevent them from reaching the helicopter, which repeatedly had to pull back.
Finally, the crew of Root Beer 210 found their way to the bottom of the slope and Clementine Two landed in a rice paddy about 60 yards (55 meters) away. A fierce firefight between the North Vietnamese soldiers and the gunners of the Navy helicopter took place. Lassen held the Seasprite in a hover to prevent it from sinking into the mud. The gunners jumped down to assist Holtzclaw and Burns aboard. As soon as they were loaded, Lassen immediately took off and left the area, climbed to 4,000 feet (1,220 meters) and headed toward the South China Sea, twenty miles (32 kilometers) away. The helicopter had only thirty minutes of fuel remaining. During the flight, the right cabin door, which had been damaged when the helicopter hit the tree, came off and fell away into the darkness.
USS Jouett (DLG-29), a Belknap-class guided missile frigate. (U.S. Navy)
Clementine Two was too far away to make it back to Preble, so they turned toward USS Jouett (DLG-29). Commander Destroyer Squadron One, Captain Robert Hayes, commanding Jouett, turned his ship toward the shore and proceeded at full speed, turning on all of the ship’s lights so that Lassen would be able to find it. Jouett came within 3 miles (4.8 kilometers) of the beach. With almost no fuel remaining, Lassen made a straight-in approach and landing.
Lieutenant Commander John A. Burns aboard USS Jouett. (U.S. Navy)
For his actions on 19 June 1968, Lieutenant Clyde Everett Lassen was awarded the Medal of Honor. Lieutenant (j.g.) LeRoy Cook received the Navy Cross. AE2 Bruce Dallas and AE3 Don West each received the Silver Star.
Kaman UH-2A Seasprite Bu. No. 149764, photographed November 1967. Lieutenant (j.g.) Clyde Everett Lassen flew this helicopter during the rescue of 19 January 1968. (U.S. Navy)
Clementine Two was a Kaman SH-2A Seasprite, Bu. No. 149764 (c/n 66). The SH-2A is 52 feet, 2.2 inches (15.905 meters) long with rotors turning, with an overall height of 14 feet, 8.6 inches (4.486 meters). The four-bladed main rotor has a diameter of 44 feet, 0 inches (13.411 meters) and rotates counter-clockwise, as seen from above (the advanicng blade is on the helicopter’s right). The blades are controlled by Kaman’s unique servo flap system. The three-bladed tail rotor is mounted on the left side of a pylon and rotates clockwise, as seen from the helicopter’s left (The advancing blade is below the axis of rotation). The helicopter’s main landing gear was retractable. The SH-2A has and empty weight is 6,110 pounds (2,771 kilograms) and maximum takeoff weight is 10,000 pounds (4,536 kilograms).
The SH-2A is powered by a single General Electric T58-GE-8B turbine engine. The T58 is a free power turboshaft, with a 10-stage axial-flow compressor section, an annular combustion chamber with 16 burner nozzles, and a 3-stage turbine (2 gas-generator stages and a single power-turbine stage). The T58-GE-8B has a Normal Power rating of 1,050 shaft horsepower at 19,500 r.p.m. at Sea Level, and Military Power rating of 1,250 shaft horsepower at 19,500 r.p.m. The engine is 1 foot, 8.9 inches (0.531 meters) in diameter, 4 feet, 11.0 inches (1.499 meters) long, and weighs 305 pounds (138 kilograms).
The SH-2A Seasprite has a Hover Ceiling Out of Ground Effect (HOGE) of 4,600 feet (1,402 meters). With a crew of four, the hover ceiling is reduced to 2,800 feet (853 meters). Its service ceiling is 15,000 feet (4,572 meters).
The SH-2A has a cruise speed of 125 knots (144 miles per hour/232 kilometers per hour) and a maximum speed of 140 knots (161 miles per hour/259 kilometers per hour) at Sea Level. Its combat radius is 125 nautical miles (144 miles/232 kilometers). The maximum range is 465 nautical miles (535 miles/861 kilometers).
Clementine 2 was armed with two M60 7.62 mm machine guns.
88 UH-2As were built 1959-1960, before production shifted to a twin-engine variant.
Seasprite 149764 was lost in the South China Sea, 7 January 1969.
President Lyndon Johnson congratulates Lieutenant Clyde Everett Lassen on the award of the Medal of Honor, 16 January 1969.
Clyde Everett Lassen was born at Fort Myers, Florida, 14 March 1942. He graduated from Venice High School, Englewood, Florida, in 1960.
Lassen enlisted in the United States Navy, 14 September 1961. He served as an Aviation Electronics Technician, 3rd Class (AT3). In 1964, he was accepted as a Naval Aviation Cadet at NAS Pensacola. On completion of flight training, Lassen was commissioned an ensign and awarded the wings of a Naval Aviator.
Ensign Lassen married Miss Linda Barbara Sawn in October 1965.
Lt. Clyde E. Lassen, USN, 1968
He was promoted to lieutenant (junior grade), 16 December 1966, and to lieutenant, 1 July 1968.
President Lyndon Johnson presented the Medal of Honor to Lieutenant Lassen at a ceremony at The White House, 16 January 1969.
Lieutenant Lassen was promoted to the rank of lieutenant commander 1 August 1972, and to commander, 1 July 1975. Commander Lassen retired from the U.S. Navy in December 1982.
Commander Lassen donated his Medal of Honor to the National Naval Aviation Museum 19 June 1993.
Commander Clyde Everett Lassen, United States Navy, died 1 April 1994 at Pensacola, Florida. He was buried at the Barrancas National Cemetery at Pensacola.
USS Lassen (DDG-82). (U.S. Navy)
Highly recommended: “Clementine Two: U.S. Navy night rescue over North Viet Nam,” by C. LeRoy Cook, athttp://www.vhpa.org/stories/clem2.pdf
Captain Richard H. Coan, USAF, at Mono Lake, California, 13 June 1962. (FAI)
13 June 1962: At Mono Lake, California, Captain Richard H. Coan, United States Air Force, set a Fédération Aéronautique Internationale (FAI) World Record for Distance Over a Closed Circuit Without Landing with a specially prepared Kaman HH-43B Huskie, serial number 60-0263. With cowlings, doors and unneeded internal equipment removed—including brake lines to the rear wheels—the helicopter had an empty weight of just 5,300 pounds (2,404 kilograms).
Near Mono Lake, California, Captain Richard H. Coan prepares to lift off aboard HH-43B-KA Huskie 60-0263, at dawn, 13 June 1962. (U.S. Air Force)
Flying along a 12-mile (19.3 kilometer) section of California Highway 167 (Pole Line Road) on the north shore of the lake, Captain Coan flew 27 laps in just over seven hours, until the Huskie ran out of fuel and settled to the pavement in a low-altitude autorotation. Without brakes and with the rear wheels locked, the helicopter rolled off the side of the roadway, but came to a stop before ending up in a ditch. The total distance flown was 1,055.16 kilometers (655.65 miles), a new Fédération Aéronautique Internationale (FAI) World Record for Distance Over a Closed Circuit Without Landing.¹
Kaman HH-43B Huskie 60-0263 parked at the edge of Pole Line Road after its record-setting flight near Mono Lake, California, 13 June 1962. (FAI)
This same helicopter, flown by Captain Walter C. McMeen, set an FAI World Record for Altitude with a 1000 kilogram Payload to an altitude of 8,037 meters (26,368 feet) over Luke Air Force Base, Arizona, 25 May 1961.² On 18 October 1961, again at Bloomfield, Lieutenant Colonel Francis M. Carney set a World Record for Altitude Without Payload when he flew 60-0263 to 10,010 meters (32,841 feet).³ The following week, on 24 October 1961, Colonel Carney set six more world records, flying the HH-43B to 3,000 meters (9,853 feet) in 2 minutes, 41.5 seconds;⁴ 6,000 meters (19,685 feet) in 6 minutes 49.3 seconds;⁵ and to 9,000 meters (29,528 feet) in 14 minutes, 31 seconds.⁶ The following summer, Captain Chester R. Radcliffe, Jr., set an FAI World Record for Distance Without Landing when he flew it from Hill Air Force Base, Utah, to Springfield, Minnesota, a distance of 1,429.80 kilometers (888.44 miles), 5 July 1962.⁷
The Kaman Aircraft Corporation Huskie was used by the U.S. Air Force, U.S. Navy and Marine Corps, primarily for short range rescue operations. It was operated by two pilots and two rescue crewmen.
A turboshaft engine drove a unique system of counter-rotating and intermeshing rotors to provide lift, thrust and directional control. The counter-rotation cancelled the torque effect so no anti-torque, or tail, rotor was necessary. This allowed all of the engine’s power to drive the main rotor system.
The fuselage of the H-43B was 25 feet, 2 inches (7.671 meters) long. Each rotor had a diameter of 47 feet, 0 inches (14.326 meters). It’s height was 15 feet, 6½ inches (4.737 meters). The helicopter’s empty weight was 4,470 pounds (2,028 kilograms) and its maximum gross weight was 8,800 pounds (3,992 kilograms).****
The H-43B was powered by one Lycoming T53-L-1B turboshaft engine, rated at 860 shaft horsepower at 21,510 r.p.m. The engine uses a 5-stage axial-flow, 1 stage centrifugal-flow, compressor with a single stage gas producer turbine and single-stage power turbine. A reverse-flow combustion section allows significant reduction in the the engine’s total length. The power turbine drives the output shaft through a 3.22:1 gear reduction. The T53-L-1 is 3 feet, 11.8 inches (1.214 meters) long and 1 foot, 11.0 inches (0.584 meters) in diameter. It weighs 460 pounds (209 kilograms).
The Huskie’s economical cruise speed was 98 miles per hour (158 kilometers per hour), and the maximum speed was 120 miles per hour (193 kilometers per hour). Its hover ceiling out of ground effect (HOGE) was 18,000 feet (5,486 meters), and in ground effect (HIGE) was 20,000 feet (6,096 meters) and it had a range of 235 miles (378 kilometers). Normal rotor speed in flight was 255–260 r.p.m., with a minimum 238 r.p.m. in autorotation.
Captain Coan was awarded the Distinguished Flying Cross for the record flight. Later as a major, he commanded Detachment 8, 38th Aerospace Rescue and Recovery Squadron, at Cam Ranh Bay Air Base during the Vietnam War. He retired from the Air Force at the rank of lieutenant colonel.
With the call sign Pedro, the HH-43 was a rescue helicopter that served in combat during the Vietnam War.
The record-setting Kaman HH-43B Huskie 60-0263 was last assigned to Detachment 3, 42nd Aerospace Rescue and Recovery Squadron, Kirtland Air Force Base, New Mexico. It is in the collection of the National Museum of the United States Air Force, Wright-Patterson Air Force Base, Ohio. Its distance record still stands.
Kaman HH-43B-KA Huskie 60-0263 at the National Museum of the United States Air Force. (U.S. Air Force)
¹ FAI Record File Number 1258
² FAI Record File Number 13154
³ FAI Record File Number 1870
⁴ FAI Record File Numbers 13057 and 13135
⁵ FAI Record File Numbers 13056 and 13136
⁶ FAI Record File Number 13137
⁷ FAI Record File Number 13208
**** Maximum overload gross weight is 9,150 pounds (4,150 kilograms) at a load factor of 2.0
Major Herbert R. Zehnder, USAF; Igor Sikorsky; Major Donald B. Murras, USAF, at le Bourget, 1 June 1967. (Sikorsky Historical Archives)
At 0105 hours, 31 May 1967, two Sikorsky HH-3E Jolly Green Giant helicopters, 66-13280 and 66-13281, from the 48th Aerospace Rescue and Recovery Squadron, United States Air Force, took off from Floyd Bennett Field, New York, and flew non-stop across the Atlantic Ocean to the Paris Air Show. They arrived at Le Bourget at 1351 hours, 1 June.
“H-211,” one of two 48th ARRS Sikorsky HH-3E Jolly Green Giant helicopters, lands at Le Bourget after a non-stop trans Atlantic flight, 1 June 1967. (Sikorsky Historical Archives)
The flight covered 4,271 miles (6873.5 kilometers) and took 30 hours, 46 minutes. Nine in-flight refuelings were required from Lockheed HC-130P Combat King tankers. The aircraft commanders were Major Herbert Zehnder and Major Donald B. Murras. Each helicopter had a crew of five.
Flight crews of the two 48th ARRS Sikorsky HH-3E Jolly Green Giant helicoptersat Le Bourget after a non-stop trans Atlantic flight, 1 June 1967. Major Zehnder is in the back row, at left.
Major Zehnder, in H-211, set a Fédération Aéronautique Internationale (FAI) World Record for Speed Over a Recognized Course for helicopters, with an average speed of 189.95 kilometers per hour (118.03 miles per hour). This record still stands.¹
The route of the two 48th ARRS Sikorsky HH-3E Jolly Green Giant helicopters from New York to Paris. (Sikorsky Archives News, July 2017)Lieutenant Colonel Travis Wofford, United States Air Force.
Both Jolly Green Giants, serial numbers 66-13280 and 66-13281, were later assigned to the 37th Air Rescue and Recovery Squadron. Both were lost in combat during the Vietnam War.
66-13280, “Jolly Green 27” crashed at Kontum, Republic of South Vietnam, 15 April 1970. The pilot, Captain Travis H. Scott, Jr., was killed, and flight engineer Gerald E. Hartzel later died of wounds. The co-pilot, Major Travis Wofford, was awarded the Air Force Cross and the Cheney Medal for his rescue of the crewmembers from the burning helicopter. Captain Scott was posthumously awarded the Air Force Cross.
66-13281, “Jolly Green 28,” was shot down over Laos, 24 October 1969. The crew was rescued and the helicopter destroyed to prevent capture. The pararescueman, Technical Sergeant Donald G. Smith, was awarded the Air Force Cross for the rescue of the pilot of “Misty 11.” He was also awarded the Airman’s Medal.
Master Sergeant Donald G. Smith, United States Air Force.
Major Herbert Zehnder flew another Sikorsky HH-3E, 65-12785, to intentionally crash land inside the Sơn Tây Prison Camp, 23 miles (37 kilometers) west of Hanoi, North Vietnam. He was awarded the Silver Star.
The SH-3A Sea King (Sikorsky S-61) first flew 11 March 1959, designed as an anti-submarine helicopter for the U.S. Navy. The prototype was designated XHSS-2 Sea King. In 1962, the HSS-2 was redesignated SH-3A Sea King. Many early production aircraft were 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.
A Sikorsky HH-3E Jolly Green Giant (66-13290) of the 37th Air Rescue and Recovery Squadron, hovering in ground effect at Da Nang, Republic of South Vietnam, 1968. (U.S. Air Force)
The Sikorsky HH-3E (Sikorsky S-61R) earned the nickname Jolly Green Giant during the Vietnam War. It is a dedicated Combat Search and Rescue (CSAR) helicopter flown by the U.S. Air Force, based on the CH-3C transport helicopter. The aircraft is flown by two pilots and the crew includes a flight mechanic and gunner. It is a large twin-engine helicopter with a single main rotor/tail rotor configuration. It has retractable tricycle landing gear and a rear cargo ramp. The rear landing gear retracts into a stub wing on the aft fuselage. The helicopter has an extendable inflight refueling boom.
The HH-3E is 72 feet, 7 inches (22.123 meters) long and 18 feet, 10 inches (5.740 meters) high with all rotors turning. The main rotor has five blades and a diameter of 62 feet (18.898 meters). Each blade has a chord of 1 foot, 6.25 inches (0.464 meters). The main rotor turns at 203 r.p.m., counter-clockwise, as seen from above. (The advancing blade is on the right.) The tail rotor also has five blades and has a diameter of 10 feet, 4 inches (3.150 meters). The blades have a chord of 7–11/32 inches (0.187 meters). The tail rotor turns clockwise as seen from the helicopter’s left. (The advancing blade is below the axis of rotation.) The tail rotor turns 1,244 r.p.m.
A Sikorsky HH-3E Jolly Green Giant refuels in flight from a Lockheed HC-130 Combat King. (U.S. Air Force)
The HH-3E has an empty weight of 13,341 pounds (6,051 kilograms). The maximum gross weight is 22,050 pounds (10,002 kilograms).
The Jolly Green Giant is powered by two General Electric T58-GE-5 turboshaft engines, which have a Maximum Continuous Power rating of 1,400 shaft horsepower, each, and Military Power rating of 1,500 shaft horsepower. The main transmission is rated for 2,500 horsepower, maximum.
The HH-3E has a cruise speed of 154 miles per hour (248 kilometers per hour) at Sea Level, and a maximum speed of 177 miles per hour (285 kilometers per hour), also at Sea Level. The service ceiling is 14,000 feet (4,267 meters). The HH-3E had a maximum range of 779 miles (1,254 kilometers) with external fuel tanks.
The Jolly Green Giant can be armed with two M60 7.62 mm machine guns.
Sikorsky built 14 HH-3Es. Many CH-3Cs and CH-3Es were upgraded to the HH-3E configuration. Sikorsky built a total of 173 of the S-61R series.
Sikorsky HH-3E Jolly Green Giant 67-14709 at the National Museum of the United States Air Force, Wright-Patterson Air Force Base, Ohio. (U.S. Air Force)
