Daily Archives: September 18, 2024

18 September 1947

In a visual reminder of United States Air Force heritage, a World War II-era Boeing B-17G Flying Fortress four-engine heavy bomber flies in formation with a Boeing B-52H Stratofortress eight-engine strategic bomber. The B-17 is a Lockheed Vega B-17G-105-VE, 44-85718. This B-52, 60-0054, has been in active service for more than 63 years. (U.S. Air Force photo/Master Sgt. Michael A. Kaplan/0600513-F-0558K-101.JPG)

18 September 1947: The United States Army Air Forces become a separate military service, the United States Air Force.

2000px-Seal_of_the_US_Air_Force.svg © 2015, Bryan R. Swopes

18 September 1946

NOTE: After 8+ years and 1,524 published posts, This Day in Aviation is going to try something new today. TDiA was contacted by a regular reader with a suggestion for a new post. He was so knowledgeable about the incident, that rather than reinvent the wheel, I asked him to write the following article. I hope that you find it as interesting as I did. Please welcome our first guest author, Captain Sean M. Cross, United States Coast Guard (Retired). —Bryan

SABENA Douglas DC-4-1009 Skymaster OO-CBR, sister-ship of OO-CBG

18 September 1946: In the summer of 1946, SABENA (Societé Anonyme Belge d’Exploitation de la Navigation Aérienne, the national airline of Belgium) began twice-weekly flights from Brussels, Belgium, to New York City, with refueling stops at Shannon, Ireland, and Gander, Newfoundland, Canada. The airline operated brand-new four-engine Douglas DC-4 Skymasters on the route.

A little after 8:00 p.m., Tuesday, 17 September, OO-CBG departed Shannon for the overnight flight to Gander. The Douglas Skymaster was under the command Captain Jean Ester, a Belgian who had flown with the Royal Air Force during World War II. The co-pilot was Albert Drossaert; with Leopold Verstraeten, navigator; Paul Fassbender, flight engineer; and radio operator Jean Dutoict. There were two flight attendants , Jeanne Bruylant and Jean Rookx, and 37 passengers.

OO-CBG was due at Gander at 0720, Wednesday morning. At 0737, the flight reported by radio, estimating that it was 16 minutes out.

SABENA OO-CBG never arrived.

The Skymaster crashed during harsh weather 24 miles (39 kilometers) southwest of Gander. An inbound Transcontinental and Western Airlines (TWA) DC-4 located the crash site and remained overhead until a United States Coast Guard Consolidated PBY-5A Catalina flying boat, serial number 48314 (c/n 1506) from Air Detachment Argentia, arrived over the scene and confirmed that the wreckage was that of the missing SABENA airliner and that survivors were seen.

A PBY Catalina flies over the crash scene of SABENA’s Douglas DC-4. (National Naval Aviation Museum 1993.501.073.099)

The crash site was heavily wooded and the ground proved to be a very large bog. As the aircraft could not land, emergency aid supplies were dropped by parachute and plans were formulated to rescue the survivors.

A PBY-5A with a U.S. Army medical team from Fort McAndrew, Argentia, under the command of Captain Samuel Preston Martin III.M.D., U.S. Army, landed on Dead Wolf Pond, a lake about one and a half miles (2.4 kilometers) long, located five miles (8 kilometers) from the crash site.

With the assistance of experienced woodsman from Gander, Dr. Martin and his medical team began the hazardous trip down a river known as Dead Wolf Brook from the lake to an area near the crash site. Martin’s team then made their way by foot through the boggy area to the DC-4 and the survivors.

Dr. Martin determined that many of the severely injured would not survive the rugged overland trip upriver and that some other way had to be found to extract the survivors and rescuers.

Transiting Dead Wolf Brook. (U.S. Coast Guard)

The U.S. Coast Guard decided to use helicopters to carry out the survivors. The nearest  were located at the Coast Guard Air Stations, Brooklyn, New York, and Elizabeth City, North Carolina, in the United States. In fact, these were the only helicopters operating in the Coast Guard at the time.

Helicopters were just out of their infancy in 1946, moving into the adolescent stage—Igor Sikorsky had made the first helicopter flight just six years earlier. [See TDiA, 14 September 1939] However, the U.S. Coast Guard had pioneered helicopter development alongside Sikorsky as the military service responsible for the testing and evaluation of helicopters during the latter years of World War II. This would be their first large scale rescue which would prove the helicopter’s amazing capabilities.

A U.S. Coast Guard HNS-1 Hoverfly, 39051, flown by Lieutenant Stewart R. Graham transports one survivor from near the crashed airliner. (Igor I. Sikorsky Historical Archives)
Captain Richard L. Burke USCG

On 20 September 1946, two days after the airliner crashed, orders were received from the East Area Rescue Officer, Captain Richard L. Burke, U.S. Coast Guard, to prepare a Sikorsky R-4/HNS-1 helicopter for immediate shipment to Gander to take part in the rescue of survivors of a crashed Belgian airliner. Instructions were given by telephone to Lieutenant Alvin Nightingale Fisher, USCG, at Elizabeth City to begin disassembly of an HNS-1 for transport aboard a C-54 Skymaster (the military version of the Douglas DC-4). No details were available on the orders for Air Station Brooklyn, New York.

Lt.  Alvin N. Fisher, USCG

An Army Air Forces C-54 from Westover Field, near Springfield, Massachusetts, arrived at Elizabeth City at 9:25 p.m., local time, on the 20th. The disassembled fabric-covered HNS-1, serial number 39051, and its crew were loaded aboard and the transport departed at 11:25 p.m. for the 1,215 nautical mile (1,298 statute miles/2,250 kilometers) journey, landing at Gander at 8:55 a.m., the next morning. The helicopter was unloaded and assembly began at once.

While the helicopter was being reassembled, the pilots were taken to the scene of the crash by a PBY from Argentia, and plans were laid for flying the survivors out by helicopter. It was decided to drop lumber at the clearing nearest the crash for the purpose of constructing a small landing platform as the muskeg would not support the weight of the helicopter. A second platform was built on the edge of the lake approximately 7 miles (11 kilometers) from the clearing so that survivors could be transferred  at this point to PBYs and flown to Gander.

A Sikorsky HOS-1 approaches two PBYs on Gander Lake. (U.S. Coast Guard)

While the Elizabeth City Sikorsky HNS-1 was being prepared for flight, another helicopter, the metal-clad Sikorsky R-6/HOS-1, serial number 23470, a newer and more powerful machine, was also on the scene being readied. The HOS-1 from Air Station Brooklyn arrived at Gander some twenty minutes before the Elizabeth City machine and was reassembled and ready for flight before the HNS-1.

Coast Guard aviation machinist’s mates work on reassembling the Sikorsky HNS-1. (U.S. Coast Guard)

Chief Aviation Machinist’s Mates Oliver F. Berry, Leo Brzycki, and AAM1 Merwin Westerberg were the primary mechanics in charge of the disassembly and reassembly of the HNS-1, while Chief Aviation Machinist’s Mate Vanelli was the primary mechanic for the HOS-1. (Other personnel could not be identified.)

Aviation machinist’s mates work on the HOS-1 at Gander. (U.S. Coast Guard)

Taking the helicopters apart in order to airlift them on transport aircraft, then putting them back together on arrival at Gander was critical to the operation. After reassembly of the Elizabeth City and during the run-up prior to its test flight, someone approached too close to the turning rotors and the test pilot did an emergency shut down. This caused a pin to shear and it was dark before the trouble could be remedied.

The Brooklyn HOS-1 managed to evacuate 8 people before dark on the 21st, all of whom had to be carried by stretcher due to the severity of their injuries.

Ground personnel off-load an ambulatory survivor from HOS-1 23470
The next day, the 22nd, both helicopters were used to fly out the remaining survivors by making  repeated flights between the crash site and Gander Lake, a distance of about 12 miles (19 kilometers). The 18 survivors were placed in wire Stokes litters attached to the outside of the HNS-1 helicopter, and inside the hastily-modified HOS-1. One at a time they were flown to Wolf Lake where they were further stabilized by the U.S. Army medics. The survivors were then placed in inflatable life rafts and rowed out to a PBY-5A on the lake. They were taken aboard the amphibian and flown to Gander Airport where they were able to receive more extensive medical care.
A survivor in a Stokes litter is transferred to life raft to be rowed out to a waiting PBY-5A Catalina. (U.S. Coast Guard)

The helicopters and PBY-5As made numerous trips before all eighteen survivors were evacuated to Gander Airport. In addition, the helicopters withdrew the fourteen members of the Army’s ground rescue team, and several others. The following day, after all survivors had been flown out, the investigators and airline officials were flown in by helicopter. In all, the helicopters made forty flights into the clearing. Landings, both at the clearing and at the lake, were made on the wooden platforms, thus permitting maximum performance of the helicopters.

A U.S. Coast Guard Consolidated PBY-5A Catalina 48314 on Gander Lake with injured survivors of the SABENA crash. (National Naval Aviation Museum 1993.501.073.116)

The U.S. Coast Guard helicopter pilots were Commander Frank Anderson, Lieutenant Commander Stewart Graham, Lieutenant Walter Bolton and Lieutenant August Kleisch. Three of these four officers had begun their Coast Guard careers as enlisted men.

The aircrews received the U.S. Air Medal, while the government of Belgium presented the Chevalier (Knight) of the Order of Leopold to all for the rescue.

Lieutenant Commander Frank Arthur Erickson, U.S. Coast Guard, at the controls of a Sikorsky HNS-1, circa 1946. (Coast Guard Historian’s Office)
Captain Frank Arthur Erickson, United States Coast Guard. (6 November 1907–17 December 1978) Captain Erickson was designated Coast Guard Aviator No. 32 in 1935, and later, Coast Guard Helicopter Pilot No. 1. On 3 January 1944, then Commander Erickson carried out the first-ever helicopter life saving mission when he delivered plasma for the survivors of USS Turner (DD-648) from Battery Park, New York, to a hospital at Sandy Hook. This occurred during a severe snow storm. Captain Erickson is internationally recognized for his pioneering efforts of helicopter rescues, hydraulic hoist systems, and flight stabilization systems. Erickson Hall at the Aviation Training Center, Mobile, Alabama, where the Coast Guard aircraft flight simulators are located, was named in his honor. Captain Ericson graduated from the U.S. Coast Guard Academy in 1931 and was commissioned an ensign. He served until retirement in 1954.
Lieutenant Stewart R. Graham, USCG, in cockpit of Sikorsky HNS-1 near Gander, Newfoundland, September 1946. (U.S. Coast Guard)

Commander Stewart Ross (“Stew”) Graham, United States Coast Guard. (25 September 1917–13 August 2016) Commander Graham was designated Coast Guard Aviator No. 114 in 1942, and then Coast Guard Helicopter Pilot No. 2 in 1943. He was the leading pilot in pioneering Anti-Submarine Warfare tactics, and trained U.S. Navy pilots to conduct these critical missions. Commander Graham was awarded the Distinguished Flying Cross and two Air Medals. He was appointed Chevalier de l’Ordre de Léopold (Knight) by tPrince Charles, Regent of Belgium, for helicopter rescues.

August Kleisch

Lieutenant Commander August (“Gus”) Kleisch, United States Coast Guard. (2 October 1908–26 October 2003) Lieutenant Commander Kleisch was designated as an Enlisted Aviation Pilot in 1935, and after commissioning in 1942, Coast Guard Aviator No. 109. In 1943, at Coast Guard Air Station Brooklyn (located at Floyd Bennett Field, Brooklyn, New York, he qualified as Coast Guard Helicopter Pilot No. 5. In 1945, “Gus” Kleisch pioneered the first use of a training helicopter to rescue seven crewmembers of a Canadian PBY flying boat which had been forced down in a remote area of Labrador. He also delivered two medical officers to the scene. For his heroism and innovation, he was awarded the Distinguished Flying Cross by the U.S. Navy, and the Royal Canadian Air Force Cross by Prime Minister of Canada. He was appointed Chevalier de l’Ordre de Léopold (Knight) by Prince Charles, Regent of Belgium, for the rescue of the SABENA survivors. Lieutenant Commander Kleisch served in the United States Coast Guard from 1927 until he retired in 1959.

ACMM Oliver F. Berry USCG

Chief Machinist’s Mate Oliver Fuller Berry, United States Coast Guard. (8 March 1908–13 September 1991) ADC Berry was one of the world’s first helicopter maintenance specialists. A distinguished expert mechanic on original Coast Guard aircraft, he was a lead instructor at the very first United States military helicopter training unit. He contributed significantly to the 1946 SABENA crash rescue operation. Of exemplary character, extraordinary technical knowledge, exceptional planning talent, and superior leadership traits, his untiring quest for excellence established the ensuing high standards characterizing Coast Guard aviation maintenance. The Chief Oliver F. Berry Aviation Maintenance Award was established in Chief Berry’s honor, and he is the namesake of the Sentinel-class cutter USCGC Oliver Berry (WPC 1124).

Sikorsky XR-4C 41-18874 at the National Air and Space Museum. (NASM)
The Vought-Sikorsky VS-316A (which was designated XR-4 by the U.S. Army Air Corps and assigned serial number 41-18874), established the single main rotor/anti-torque tail rotor configuration. It was a two-place helicopter with side-by-side seating and dual flight controls. The fabric-covered three-blade main rotor was 38 feet (11.582 meters) in diameter and turned counter-clockwise as seen from above. (The advancing blade is on the helicopter’s right). The three-blade tail rotor was mounted to the right of the tail boom in a tractor configuration, and rotated clockwise when seen from the helicopter’s left side. (The advancing blade was below the axis of rotation.)
The XR-4 was 33 feet, 11.5 inches (10.351 meters) long and 12 feet, 5 inches (3.785 meters) high. It weighed 2,010 pounds (911.7 kilograms) empty and the maximum gross weight was 2,540 pounds (1,152.1 kilograms).
The VS-316A had originally been powered by a 499.8-cubic-inch-displacement (8.19 liter) air-cooled Warner Aircraft Corporation Scarab SS-50 (R-500-1) seven-cylinder radial engine, rated at 145 horsepower at 2,050 r.p.m. In the XR-4 configuration, the engine was upgraded to an air-cooled, direct-drive 555.298-cubic-inch-displacement (9.100 liter) Warner Super Scarab SS185 (R-550-3) seven-cylinder radial engine with a compression ration of 6.20:1. The R-550-3 was rated at 185 horsepower at 2,175 r.p.m. at Sea Level, and 200 horsepower at 2,475 r.p.m (five minute limit) for takeoff. The engine was placed backwards in the aircraft with the propeller shaft driving a short driveshaft through a clutch to a 90° gear box and the transmission. The R-550-3 weighed 344 pounds (156 kilograms).
The XR-4 was redesignated XR-4C. This would be the world’s first production helicopter. It is at the Steven F. Udvar-Hazy Center of the Smithsonian National Air and Space Museum.
U.S. Coast Guard Sikorsky HOS-1
Sikorsky designed the HOS-1(R-6) as a follow on to his fabric covered HNS-1 (R-4). While retaining the R-4’s rotor and transmission system, the R-6 had an all-metal fuselage. In October 1944 the first of three XHOS-1 were delivered to the US Navy and transferred to the US Coast Guard Air Station Brooklyn, Floyd Bennett Field, for test and evaluation. One of these crashed.
The Navy then acquired 36 HOS-1 (R-6A) from the Army Air Force which were purchased by the Coast Guard between January 1945 and January 1946. Of these, two were destroyed in crashes (no fatalities), and the majority of the remaining helicopters were returned to the Navy or disposed of with the closing of the helicopter training school.
On 18 June 1946 CDR Erickson was moved to the Coast Guard Elizabeth City air station. His downsized Helicopter Test and Development Unit consisted of a small group of dedicated personnel, one hangar, one HNS and two HOS helicopters. This was the thread that kept the Coast Guard helicopter program alive.
General characteristics
Crew: one
Capacity: one observer
Length: 47 ft 11 in (14.61 m)
Gross weight: 2,600 lb (1,179 kg)
Powerplant: 1 × Franklin O-405-9 piston, 240 hp (180 kW)
Main rotor diameter: 38 ft 0 in (11.58 m)
Performance
Maximum speed: 100 mph (160 km/h, 87 kn) – this new aircraft could attain 100 mph compared with 82 mph by the earlier design.
Service ceiling: 10,000 ft (3,000 m)
© 2020, Sean M. Cross

18 September 1928

Graf Zeppelin over the airship hangars at Firedrichshafen. (The Lothians collection)
Graf Zeppelin over the airship hangars at Friedrichshafen. (The Lothians collection)

18 September 1928: The rigid airship, Graf Zeppelin, LZ 127, made its first flight at Friedrichshafen, Germany.

Graf Zeppelin was named after Ferdinand Adolf Heinrich August Graf von Zeppelin, a German general and count, the founder of Luftschiffbau Zeppelin GmbH (the Zeppelin Airship Company). The airship was constructed of a lightweight metal structure covered by a fabric envelope. It was 776 feet (236.6 meters) long. Contained inside were 12 hydrogen-filled buoyancy tanks, fuel tanks, work spaces and crew quarters.

A gondola mounted underneath contained the flight deck, a sitting and dining room and ten passenger cabins. The LZ-127 was manned by a 36 person crew and could carry 24 passengers.

A dining room aboard Graf Zeppelin.

LZ 127 was powered by five water-cooled, fuel injected 33.251 liter (2,029.1 cubic inches) Maybach VL-2 60° V-12 engines producing 570 horsepower at 1,600 r.p.m., each. Fuel was either gasoline or blau gas, a gaseous fuel similar to propane. The zeppelin’s maximum speed was 80 miles per hour (128 kilometers per hour).

During the next nine years, Graf Zeppelin made 590 flights, including an around the world flight, and carried more than 13,000 passengers. It is estimated that it flew more than 1,000,000 miles. After the Hindenburg accident, it was decided to replace the hydrogen buoyancy gas with non-flammable helium. However, the United States government refused to allow the gas to be exported to Germany. With no other source for helium, in June 1938, Graf Zeppelin was deflated and placed in storage.

In his excellent history of the Royal Air Force leading up to the Battle of Britain, Duel of Eagles, Group Captain Peter Wooldridge Townsend, CVO, DSO, DFC and Bar, describes how Germany used Graf Zeppelin for reconnaissance missions, occasionally overflying the British Isles in poor weather due to “navigational errors.” The airship was scouting for radar sites and RAF radio frequencies. (This airship may have been Graf Zeppelin II, LZ 130.)

Both airships were scrapped and their duralumin structures salvaged.

© 2017, Bryan R. Swopes

18 September 1919

Roland Rolffs after setting an FAI altitude record of 9214 meters at Garden City, 20 July 1919. (San Diego Air and Space Museum Archives)
Roland Rohlfs after setting an FAI altitude record of 9,241 meters (30,318 feet) at Garden City, New York, 20 July 1919. The airplane is the Curtiss 18T-2 Wasp, Bu. No. A3325. (San Diego Air and Space Museum Archives)

18 September 1919: Curtiss Engineering Corporation test pilot Roland Rohlfs set a Fédération Aéronautique Internationale (FAI) World Record for Altitude when he flew a Curtiss 18T-2 Wasp triplane, U.S. Navy Bureau of Aeronautics serial number A3325, to an altitude of 9,577 meters (31,421 feet) over Roosevelt Field, Long Island, New York.¹ Contemporary sources, however, reported that Rohlfs’ peak altitude was 34,610 feet (10,549 meters).

This record broke Rohlfs’ previous FAI World Record for Altitude of 9,241 meters (30,318 feet) set at Garden City, New York, 30 July 1918.²

aeronautics officials check altitude-recording barographs with Roland Rohlfs after a record-setting flight. (San Diego Air and Space Museum Archives)
Aero Club of America officials check altitude-recording barographs with Roland Rohlfs after a record-setting flight. (San Diego Air and Space Museum Archives)

Rohlfs took off at 12:06 p.m. and reached his peak altitude 1 hour, 15 minutes later. The air temperature was -43 °F. (-41.7  °C.). He touched down after 1 hour, 53 minutes.

The Curtiss 18T Wasp was a two-place single-engine triplane fighter designed and built for the United States Navy at the end of World War I. A3325 had been loaned to the U.S. Army to set an airspeed record of 163 miles per hour (262 kilometers per hour), before being returned to Curtiss for additional testing. It was fitted with a set of longer wings and redesignated 18T-2. The second 18T, A3326, retained the standard 32’–½” (9.766 meters) wings and was redesignated 18T-1.

The Curtiss 18T-2 was 23 feet (7.010 meters) long with a wingspan of 40 feet, 7½ inches (12.383 meters). It weighed 1,900 pounds (862 kilograms). The airplane was powered by a water-cooled, normally-aspirated, 1,145.11-cubic-inch-displacement (18.765 liter) Curtiss-Kirkham K-12 60° single-overhead-cam V-12 engine which produced 375 horsepower at 2,250 r.p.m., and 400 horsepower at 2,500 r.p.m. The K-12 drove a two-bladed fixed-pitch propeller through a 0.6:1 gear reduction.

Roland Rohlfs takes off from Roosevelt Field, Long Island, New York at 12:06 p.m., 18 September 1919. (San Diego Air and Space Museum Archives)
Roland Rohlfs and the Curtiss 18T-2 take off from Roosevelt Field, Long Island, New York, at 12:06 p.m., 18 September 1919. (San Diego Air and Space Museum Archives)

A3325 later crashed during a test flight. Its sistership, A3326, suffered a crankshaft failure and was destroyed. The Curtiss 18T was never placed in series production.

¹ FAI Record File Number 15676

² FAI Record File Number 15674

© 2017, Bryan R. Swopes

18 September 1918

Captain Rudolph William Schroeder with the Bristol fighter which he flew to a world record altitude, 18 September 1918. Note the gap between to bottom of the fuselage and the lower wing. (U.S. Air Force)

18 September 1918: Captain Rudolph William Schroeder, United States Army Air Service, the Chief Test Pilot of the Engineering Division at McCook Field, Fairfield, Ohio, flew a Bristol F.2B fighter to set two Fédération Aéronautique Internationale (FAI) World Records.¹ ²

Aerial Age Weekly reported:

CAPTAIN SCHROEDER ESTABLISHES WORLD ALTITUDE RECORD

THE Contest Committee of the Aero Club of America has homologated the world’s altitude record made by Captain R. W. Schroeder, in a Bristol fighter equipped with a 300 H. P. Hispano-Suiza motor, of 28,900 feet above sea level, during a flight on September 18, 1918, at Wilbur Wright Field, Fairfield, Ohio, near Dayton.

      Nothing was more fitting. While the Allies’ aviators overseas are beating the Germans on the various fronts, an American aviator, Captain R. W. Schroeder, U.S. Air Service, beats the German aeroplane altitude record.

Captain Schroeder left the ground at 1:45 P. M., September 18, 1918. and reached his highest point if 105 minutes, which would have been at about 3:30 P. M. It took him about twenty minutes to descend, landing about 200 miles from where he started, at about 3:50 P. M.

     Captain Schroeder i sin charge of all Performance Tests at the Wilbur Wright Station and his duties require him to go to 21,000 and 22,000 feet quite often, and he generally goes without oxygen. In this record climb, he got well up to 25,000 feet without oxygen. He used no anti-freezing mixture and his maximum water temperature was 85 degrees centigrade at the start minimum and of 60 degrees centigrade at the highest altitude. The temperature of the air was 32 degrees centigrade below zero.

The reports, including the two barograph charts, duly calibrated and corrected: the performance curves, and the temperature record were certified to by Lieut. George B. Patterson, O. I. C. Performance Test Reports and the instruments were calibrated by the Bureau of Standards, and adjusted locally at the McCook Field Laboratory and personally installed on the aeroplane by Lieut. Patterson.

     The previous American altitude record was made by Caleb Bragg at Mineola, L. I., September 20, 1917, in a Wright Martin, Model V machine, when he reached an altitude of 20,250 feet, and the last world’s record of the International Aeronautic Federation made by G. Legagneux in France on the 28th of December, 1913, was 6,120 meters (20,258 feet). In July, 1914, a German aviator was reported as having flown to 26,200 feet, but the record was never submitted for homologation.

     This world’s record, made by Captain Ruddy W. Schroeder, is the first world’s aeroplane altitude record held by an American since the world’s altitude record made by Lincoln Beachey, at Chicago, Ill., during the International Meet, August 20, 1911, when he reached the height of 11,642 feet (3,548 meters).

     Under the rules of the International Aeronautic Federation, the international aeronautic body which controls all aeronautic sports and gives the necessary official records, a pilot must hold the International Aviator’s certificate to have his record recognized. This certificate is issued in the United State by the Aero Club of America, which is the federation’s sole representative in this country. Captain Schroeder held the the F. A. I. certificate at the time he made the record, therefore his record will be accepted by all the countries affiliated with the International Aeronautic Federation and the Pan-American Aeronautic Federation, which represents twenty Latin American republics.

Under the rules of the Federation to establish an altitude record it is necessary to best the old record by at lease 100 meters. Captain Schroeder, therefore, beat the record by a good margin and has gone higher the the highest mountain, with the exception of the highest peak in the Himalaya, which rises 29,002 feet.

     Captain Schroder is a veteran of the aeronautic movement. He is an old time member of the Aero Club of Illinois and well known for his ability as an aviator and aeronautic engineer.

AERIAL AGE WEEKLY, Vol. VIII, No. 5, 14 October 1918

Bristol F.2B C823. (BAE Systems)

The Bristol F.2B was a two-place single-engine two-bay biplane fighter, designed by Captain Frank Sowter Barnwell, O.B.E., A.F.C., and built by the British and Colonial Aeroplane Co., Ltd., Filton and Brislington, Bristol, England, and several other manufacturers. More than 3,800 were produced and some considered it to be the best two-place fighter of the First World War.

The F.2B was 25 feet, 9 inches (7.849 meters) long. Both upper and lower wings had a span of 39 feet, 3 inches (11.979 meters) and a chord of 5 feet, 6 inches (1.676 meters). The total wing area was 405 square feet (37.63 square meters). Both wings had an angle of incidence of 1½°, and 3½° dihedral. There was no sweep. The lower wing was staggered 1 foot, 5 inches (0.432 meters) behind the upper wing. In order to give the gunner a better range of fire, the lower wing was not attached to the bottom of the fuselage. This had the effect of lowering the upper wing while maintaining a vertical gap of 5 foot, 5 inches (1.651 meters).

The gross weight of the F.2B was approximately 2,810 pounds (1,275 kilograms).

Bristol F.2A

The Bristol Fighters were powered by Rolls-Royce Falcon engines. The F.2B was equipped with the Falcon III. The Falcon was a water-cooled, normally-aspirated 867.080-cubic-inch-displacement (14.209 liters) single-overhead camshaft 60° V-12 engine. The Falcon III had a compression ratio of 5.3:1 and had a Sea Level rating of 288 horsepower at 2,300 r.p.m. The propeller gear reduction ratio was 0.589:1.

The F.2B had a maximum speed of 125 miles per hour (201 kilometers per hour) at Sea Level, and 113 miles per hour (182 kilometers per hour) at 10,000 feet (3,048 meters). The fighter could climb to 10,000 feet in 11.5 minutes, and to 15,000 feet (4,572 meters) in 21.5 minutes.

The United States was interested in producing its on version of the F.2B, to be powered by the American Liberty V-12 engine instead of the Rolls-Royce Falcon III V-12. The Royal Air Force sent two F.2Bs to McCook Field to be used as “pattern aircraft.” These were assigned project numbers P30 and P37.³

The Engineering Division at McCook Field found that the Liberty was too heavy to be practical when installed in the Bristol F.2, and other engine types were considered. One of the pattern aircraft was modified to accept a 300 horsepower Hispano-Suiza V-8 engine.

P37 was the project number assigned to the second of the two Bristol F.2B fighters evaluated at Wright Field in 1918.

When equipped with the Hispano-Suiza V-8 engine, the modified F.2B had an empty weight of 1,733 pounds (786 kilograms), and maximum of 2,630 pounds (1,193 kilograms). It had a maximum speed of 128 miles per hour (206 kilometers) per hour at Sea Level; 105 miles per hour (169 kilometers per hour) at 10,000 feet, 100½ miles per hour (162 kilometers per hour) at 13,000 feet, and 97½ miles per hour (157 kilometers per hour) at 15,000 feet. With the Hispano, the F.2B could climb to 1,000 feet in 1 minute, 10 seconds, 10,000 feet in 15 monutes, 5 seconds, 15,000 feet in 28 minutes and 50 seconds.

Three-view illustration for the Bristol F.2B. (Flight)

¹ FAI Record File Number 15463: 9,455 meters (31,020 feet)

² FAI Record File Number 15671: 9,455 meters (31,020 feet)

³ A source states that P30 carried the RAF identification number C949, and that P37, C4729.

© 2018, Bryan R. Swopes