Daily Archives: October 9, 2017

9 October 1999

9 October 1999: At a Saturday air show at Edwards Air Force Base, California, NASA Research Pilot Rogers E. Smith and Flight Test Engineer Robert R. Meyer, Jr., flew Lockheed SR-71A-LO 61-7980, NASA 844, on what would be the very last flight of a Blackbird. Although it was scheduled to fly again for the Sunday air show, a serious fuel leak prevented that flight.

61-7980 (Lockheed serial number 2031) was the final SR-71A to be built.

NASA 844 was retired after the final flight and placed in flyable storage, but in 2002, it was placed on static display at the Dryden Flight Research Center,¹ Edwards Air Force Base, California.EC92-02273 

¹ In 2014, DFRC was renamed the NASA Neil A. Armstrong Flight Research Center (AFRC).

© 2017, Bryan R. Swopes

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9 October 1987

PP1, the first prototype of the EH101, ZF 641. (Paul Thallon)
PP1, the first prototype of the EH101, ZF 641. (Paul Thallon)

9 October 1987: Westland Helicopters Ltd. Chief Test Pilot John Trevor Eggington and Deputy Chief Test Pilot Colin W. Hague take PP1, the first EH 101 prototype, for its first flight at Yeovil, Somerset, United Kingdom. The helicopter had been completed 7 April 1987 and underwent months of ground testing.

A medium-lift helicopter, the EH 101 was a joint venture of Westland and Costruzioni Aeronautiche Giovanni Agusta S.p.A. of Italy, known then as European Helicopter Industries, or EHI, to produce a replacement for the Sikorsky S-61 Sea King, which both companies built under license. The Italian and British companies merged in July 2000 and are now known as AgustaWestland NV, with corporate headquarters in the Netherlands. After the merger of the two helicopter manufacturers, the EH 101 was redesignated AW101. It is also known as the Merlin.

Canadian Forces CH-149 Cormorant, a search and rescue variant of the AgustaWestland AW101. (Korona4Reaal via Wikipedia)
Canadian Forces CH-149 Cormorant 149902, a search and rescue variant of the AgustaWestland AW101. (Korona4Reel via Wikipedia)

Nine prototypes were built, four by Agusta at Vergiate, Italy, and five by Westland at Yeovil. During testing, Agusta-built PP2 and Westland’s PP4 were destroyed.

PP1, the first prototype, was powered by three General Electric CT7-2A turboshaft engines which were rated at 1,625 shaft horsepower, each. In production, Rolls-Royce/Turbomeca RTM322 engines are optional, as are the more powerful CT7-8s. Produced in both military and civil variants, the Merlin is used in search-and-rescue, anti-submarine warfare, mine countermeasures, airborne early warning and utility configurations. Production began in 1995 and continues today.

The AgustaWestland AW101 Merlin is a single main rotor/tail rotor medium helicopter powered by three turboshaft engines. It is equipped with retractable tricycle landing gear. The helicopter may be flown by a single pilot and uses a digital flight control system. The actual flight crew is dependent on aircraft configuration and mission.

The five blade composite main rotor has a diameter of 61 feet, 0 inches (18.593 meters) and turns counterclockwise as seen from above. (The advancing blade is on the helicopter’s right side.) The blades use a BERP feature that was pioneered on the Westland Lynx AH.1 Lynx, G-LYNX, which Trevor Eddington flew to a world speed record, 11 August 1986. This allows higher speeds, greater gross weight and is quieter than a standard blade. A four blade tail rotor with a diameter of 13 feet, 1 inch (3.962 meters) is positioned on the left side of the tail boom in pusher configuration. It rotates clockwise as seen from the helicopter’s left. The tail rotor pylon is inclined to the left.

PP.5 parked aboard HMS iron Duke. (Royal Navy)
PP5, the prototype  ASW variant parked aboard HMS Iron Duke (F234). (Royal Navy)

Overall length of the AW101 is 74 feet, 10 inches (22.809 meters) with rotors turning. The fuselage is 64 feet, 1 inch (19.533 meters) long. Overall height of the helicopter is 18 feet, 7 inches (5.664 meters). Its empty weight is 20,018 pounds (9,080 kilograms) and the maximum takeoff weight (MTOW) is 34,392 pounds (15,600 kilograms).

The RTM322 engine was developed as a joint venture between Rolls-Royce and Turboméca, but is now a Safran Helicopter Engines product. The RTM322 02/8 is a modular reverse-flow turboshaft engine with a 3-stage axial-flow, 1 stage centrifugal-flow compressor and 2-stage high-pressure, 2-stage power turbine. The output drive shaft turns 20,900 r.p.m. The RTM322 02/08 is rated at 2,000 shaft horsepower, and 2,270 shaft horsepower for takeoff. It has a One Engine Inoperative (OEI) rating of 2,472 shaft horsepower (30 minute limit). The engine is 3 feet, 10.1 inches (1.171 meters) long, 2 feet, 1.5 inches (0.648 meters) in diameter and weighs 503 pounds (228.2 kilograms).

The AW101’s cruise speed is 278 kilometers per hour (150 knots). The hover ceiling in ground effect (HIGE) is 3,307 meters (10,850 feet). In utility configuration, the Merlin carries fuel for 6 hours, 30 minutes of flight and has a maximum range of 1,363 kilometers (735 nautical miles).

John Trevor Egginton, Chief Test Pilot, Westland Helicopters. (Photograph courtesy of Neil Corbett, Test and Research Pilots, Flight Test Engineers)
John Trevor Eggington, Chief Test Pilot, Westland Helicopters. (Photograph courtesy of Neil Corbett, Test and Research Pilots, Flight Test Engineers)

Trevor Eggington retired from Westland in 1988 and Colin Hague became the company’s chief test pilot. In 2003, Hague was appointed an Officer of the Most Excellent (OBE) Order of the British Empire for his contributions to aviation.

Deputy Chief Test Pilot Colin W.Hague, with the first prototype EH101, PP1. (Photograph courtesy of Neil Corbett, Test and Research Pilots, Flight Test Engineers)
Deputy Chief Test Pilot Colin W. Hague, with the first prototype EH101, PP1. (Photograph courtesy of Neil Corbett, Test and Research Pilots, Flight Test Engineers)

Since 2010, PP1 has been used as an instructional airframe for maintenance personnel at RNAS Culdrose, Cornwall, UK.

ZF641, the first prototype of the EH101 (AW101) Merlin, at RNAS Culdrose, 2010. (dyvroeth)
ZF 641, the first prototype of the EH 101 (AW101) Merlin, at RNAS Culdrose, 2010. (dyvroeth)

© 2016, Bryan R. Swopes

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9 October 1943

In this iconic World War II photograph, a Douglas-built B-17F-50-DL Flying Fortress, 42-3352, “Virgin’s Delight,” of the 410th Bomb Squadron, 94th Bombardment Group (Heavy), 8th Air Force, is over the Focke-Wulf Fw 190 fighter factory, Marienburg, East Prussia, 9 October 1943. The aircraft commander was Lieutenant R.E. Le Pore. (U.S. Air Force)

VIII Bomber Command Mission Number 113 was an attack by nearly 100 American heavy bombers on the Focke-Wulf Flugzeugbau AG aircraft factory at Marienburg, East Prussia (Malbork, Poland), where the Luftwaffe‘s Fw 190 fighter was being built. Early in the war, German fighter production had been dispersed and it was thought that Marienburg was beyond the range of Allied bombers.

The Fw 190 was the most effective of Germany’s fighters. More than 20,000 were built in 16 variants.

A captured Focke-Wulf Fw 190 in flight. (U.S. Air Force)
A captured Focke-Wulf Fw 190 G-3 fighter, DN+FP, W.Nr. 160016, in flight. (U.S. Air Force)
Focke-Wulf Fw 190 G-3 DN+FP, W.Nr. 160016, in flight near Wright Field, Ohio, May 1946. (U.S. Air Force)
Focke-Wulf Fw 190 G-3 DN+FP, W.Nr. 160016, from above and behind. (U.S. Air Force)

100 B-17 Flying Fortress bombers were assigned to the target and 96 of these reached the plant. Between 1253 hours and 1302 hours, the B-17s arrived over the target in five waves at 11,000 to 13,000 feet (3,353 to 3,963 meters). They dropped 217.9 tons (197.7 metric tons) of bombs with a very high degree of accuracy.

During the mission, two B-17s were lost with 13 more damaged. Three airmen were wounded and 21 listed as Missing in Action. The bomber crews claimed 9 Luftwaffe aircraft destroyed and 2 probably destroyed in air-to-air combat. Target assessment estimated that 15 Focke-Wulf Fw 190 fighters were destroyed on the ground.

This strike photo was taken from B-17 42-30353 ("Ten Knights in a Bar Room") of the 95th Bombardment Group (Heavy). (U.S. Air Force)
This strike photo was taken from Boeing B-17F-100-BO Flying Fortress 42-30353 (“Ten Knights in a Bar Room”) of the 95th Bombardment Group (Heavy). (U.S. Air Force)

Casualties among the factory work force were high. Of 669 workers, 114 were killed and 76 injured.

Air Chief Marshal Sir Charles Portal, KCB, DSO, MC, Royal Air Force, described the Marienburg attack as the “. . . most perfect example in history of the accurate distribution of bombs over a target.”

Damage assessment photograph
Reconnaissance photograph taken by a de Havilland DH.98 Mosquito PR flown by Squadron Leader R.A. Lenton and Pilot Officer Heney of No. 540 Squadron, R.A.F., 10 October 1943, showing results of the previous day’s attack. (Royal Air Force)
The target area as it appears today. (Google Maps)
"Instrument workers line up aerial cameras at Benson, Oxfordshire, before installing them in a De Havilland Mosquito PR Mark IX: (left to right) two Type F.24 (14-inch lens) vertical cameras, one F.24 (14-inch lens) oblique camera, two Type F.52 (36-inch lens) 'split pair' vertical cameras." (Imperial War Museum CH-18399)
“Instrument workers line up aerial cameras at Benson, Oxfordshire, before installing them in a De Havilland Mosquito PR Mark IX: (left to right) two Type F.24 (14-inch lens) vertical cameras, one F.24 (14-inch lens) oblique camera, two Type F.52 (36-inch lens) ‘split pair’ vertical cameras.” (Imperial War Museum CH-18399)

© 2017, Bryan R. Swopes

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9 October 1912

Arnold and Milling at College Park, Maryland, 1912. (U.S. Air Force)
Lieutenants Arnold and Milling at College Park, Maryland, 1912. (U.S. Air Force)

9 October 1912: In October, Lieutenants Henry H. Arnold and Thomas DeWitt Milling, both assigned to the Aeronautical Division, Signal Corps, United States Army, were ordered to enter the competition for the first Mackay Trophy for “the most outstanding military flight of the year.” Milling withdrew because of illness shortly after the competition started.

Clarence Hungerford Mackay. (Brittanica)
Clarence Hungerford Mackay

“Hap” Arnold won when he flew a 40-horsepower Wright Model B biplane over a triangular course from College Park to Washington Barracks at Washington D.C., on to Fort Myers, Virginia, and back to College Park.

The Mackay Trophy was established on 27 January 1911 by Clarence Hungerford Mackay, who was then head of the Postal Telegraph-Cable Company and the Commercial Cable Company. Originally, aviators could compete for the trophy annually under rules made each year, or the War Department could award the trophy for the most meritorious flight of the year.

The Wright Model B was a two-place, single-engine biplane. The elevator was at the rear, rather than in canard position as had been the earlier Wright airplanes. (This configuration was known as “headless.”) Roll control was through the Wright Brother’s wing-warping system. The Model B was 26 feet (7.925 meters) long with a wingspan of 39 feet (11.887 meters). It had an empty weight of 800 pounds (363 kilograms) and a gross weight of 1,250 pounds (567 kilograms).

The Model B was powered by a water-cooled, fuel-injected, 240.53-cubic-inch-displacement (3.942 liter), Wright “4-40” inline four-cylinder overhead valve gasoline engine, which produced 32 horsepower at 1,310 r.p.m. The engine weighed 160 pounds (73 kilograms). Two 8½ foot (2.591 meters) diameter, two-bladed, counter-rotating propellers, driven by a chain drive, are mounted behind the wings in pusher configuration. They turned 445–470 r.p.m.

The Wright Model B had a maximum speed of approximately 40 miles per hour (64 kilometers per hour) and its range was 110 miles (177 kilometers).

Approximately 100 Model B aeroplanes were built by the Wrights and under license by Burgess from 1910 to 1914. Three are known to exist.

Arnold won the Mackay Trophy again in 1934 when he commanded a flight of ten Martin B-10 bombers from Bolling Field, Washington, D.C., to Fairbanks, Alaska, and back.

Lieutenant Arnold went on to have a successful career in military aviation.

General of the Army Henry Harley Arnold, United States Army Air Forces. (U.S. Air Force)

© 2016, Bryan R. Swopes

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9–10 October 1900

The 1900 Paris World's Fair, before the start of the balloon race.
L’Exposition Universelle de 1900 à Paris (the 1900 Paris World’s Fair), before the start of the balloon race. (Parisienne de Photographie)

9–10 October 1900: The Aéro-Club de France held a long-distance balloon race, coinciding with the World’s Fair and Olympic Games. Six balloon teams competed for the Grand Prix, including that of Henri François Joseph, Comte de la Vaulx, and Joseph Félix Georges, Comte de Castillon de Saint-Victor, co-founders, along with several others, including Jules Verne, of the Aero Club.

From the American Monthly Review of Reviews, Vol. 23, January–June 2001, beginning at Page 609 :

M. le Comte, Henri de la Vaulx, 1908. (Agence ROL)

Of the six balloons entered for this record-breaking race, the Centaur was one of the smaller, its dimensions being 1,630 cubic meters, while its chief competitor, the St. Louis, measured 3,000 cubic meters. The Centaur rose from the grounds at Vincennes at 20 minutes past 5 in the afternoon of October 9. From Count de la Vaulx’s account of the journey, which appears in Pearson’s for April, we glean the following facts:

“Our direction at the start was north-north-east, and very soon, the sun having gone down, Paris was nothing for us but a vast, vaguely defined patch of luminosity far to the west. The Centaur was in equilibrium at about 5,000 feet [1,524 meters] above the sea-level, when the moon rose with such a radiant brilliance that we could read all our instruments without the aid of the electric lamp. Every now and then a shooting star traversed the vault of heaven, inciting us to wish for the success of our enterprise. . . .”

Count de la Vaulx described the route of the flight, the cities and landmarks that they passed over, the weather and temperatures at various altitudes. At several times during the race, they were in sight of another balloon, the larger St. Louis.

Centaur ascended as high as 22,000 feet (6,706 meters) and experienced temperatures as low as -12 °C. (10 °F.) The changes in air temperature caused the gas in the balloon to expand and contract, and it rose and fell as the density of the gas varied.

Having expended their supply of breathing oxygen, the two aeronauts opened the balloon’s vents to descend closer to the ground. Their anchor rope caught in some trees and Centaur came to earth shortly thereafter.

Map of the 1900 balloon race
Map of the 1900 World’s Fair balloon race

La Vaulx and Saint-Victor had landed near Korostyshiv, Ukraine. The two counts had traveled 1,153 miles (1,856 kilometers) in 35¾ hours.

Having crossed the Russian frontier without passports, the two gentlemen were held in custody for four days before being allowed to return to France by train.

Participants of the 1900 balloon race. Left to right: The Comte de Castillon de Saint-Victor, G. Hervieu, Jacques Balsan, J. Faure, the Comte de La Vaulx, G. Juchmes and L. Maison. (Those Magnificent Men in their Flying Machines)

© 2016, Bryan R. Swopes

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