Senior Lieutenant Nguyễn Văn Cốc in the cockpit of a MiG 21. (From the collection of CMSGT Bob Laymon, USAF)
20 December 1969: Senior Lieutenant Nguyễn Văn Cốc, of the 921st Fighter Regiment, Vietnam Peoples’ Air Force, flying a Mikoyan-Gurevich Mig 21PFL supersonic interceptor, shot down his final enemy aircraft of the Vietnam War, a U.S. Air Force AQM-34L reconnaissance drone (Ryan Aeronautical Company Model 147SC, code named BUFFALO HUNTER).
A U.S. Air Force Ryan AQM-34L Buffalo Hunter of the 556th Reconnaissance Squadron, based at Bien Hoa Air Base, circa 1969. This drone flew 68 missions before being shot down over Hanoi. (U.S. Air Force)
Nguyễn Văn Cốc entered the Không quân Nhân dân Việt Nam (Vietnamese People’s Air Force) in 1961. He spent four years in the Soviet Union training as a fighter pilot, and was qualified on both the Mikoyan-Gurevich MiG 17 and MiG 21.
Nguyễn was credited by the VPAF with nine aerial combat victories. Seven of these were also confirmed by the United States. Between 30 April 1967 and 20 December 1969, he shot down a Convair F-102A Delta Dart, three Republic F-105D Thunderchiefs, one F-105F Thunderchief, a McDonnell F-4B Phantom II, two F-4D Phantom IIs, and the BUFFALO HUNTER.
Senior Lieutenant Nguyễn Văn Cốc, at right, with two other pilots. A Mikoyan-Gurevich MiG 21PF is in the background. (VPAF)
All of Nguyễn’s victories were scored while flying the MiG 21PFL, with R-3S infrared-homing air-to-air missiles.
These MiG 21s are assigned to the 921st Fighter Regiment. The closest, “Red 4326,” is one of the interceptors flown by Nguyễn Văn Cốc. The 13 “kill marks” on its nose represent enemy aircraft shot down by Nguyễn and other pilots who flew the airplane. This airplane is on display at the Hanoi Air Defense Museum (Bảo tàng Phòng không-Không quân). (VPAF)
The R-3S (also known as the K-13, and identified as “AA-2A Atoll” by NATO forces) was reverse-engineered by the Turopov Design Bureau, Tushino, Russia, from a Raytheon AIM-9B Sidewinder which had been captured by the People’s Republic of China during the 1958 Taiwan Straits Crisis. Fired by a Republic of China Air Force F-86 Sabre, the missile hit a People’s Liberation Army Air Force MiG 17, but its warhead did not detonate. The PLAAF turned the Sidewinder over to the Soviet Union.
Lieutenant General Nguyễn remained in the VPAF until retiring in 2002 with the rank of chief inspector. He is the highest-scoring fighter pilot of the Vietnam War.
Captain Nguyễn Văn Cốc is congratulated by Hồ Chí Minh, President of the Democratic Republic of Vietnam.
The BUFFALO HUNTER was approximately 26 feet (7.9 meters) long with a wing span of 13 feet (4.0 meters). It weighed 3,067 pounds (1,391 kilograms).
The drone was powered by a single Continental J69 turbojet engine, rated at 1,920 pounds of thrust (8.54 kilonewtons).
BUFFLO HUNTERS had a cruising speed of 500–540 knots (575–621 miles per hour/926-1,000 kilometers per hour), but could reach 590 knots (679 miles per hour/1,093 kilometers per hour) “on the deck.” It had a maximum range of 650 nautical miles (748 statute miles/1,204 kilometers).
The drone was equipped with a Fairchild 415Y reconnaissance camera. It carried 1,800 feet (549 meters) of 70-millimeter film.
BUFFALO HUNTERs were launched by Lockheed DC-130 drone carriers, modified from C130 A or -E Hercules transports. Most carried two drones on underwing pylons, but two of the DC-130s could carry four.
A Lockheed DC-130 carrying two BUFFALO HUNTER reconnaissance drones. (U.S. Air Force)
North American Aviation, Inc., X-15A-1, 56-6670, at Los Angeles Division, October 1958. (Air Force Flight Test Center History Office)
20 December 1968: After 199 flights, the National Aeronautics and Space Administration cancelled the X-15 Hypersonic Research Program. A 200th X-15 flight had been scheduled, but after several delays, the decision was made to end the program. (The last actual flight attempt was 12 December 1968, but snow at several of the dry lakes used as emergency landing areas resulted in the flight being cancelled.)
The X-15A rocketplane was designed and built for the U.S. Air Force and the National Advisory Committee for Aeronautics (NACA, the predecessor of NASA) by North American Aviation, Inc., to investigate the effects of hypersonic flight (Mach 5+). Design work started in 1955 and a mock-up had been completed after just 12 months. The three X-15s were built at North American’s Los Angeles Division, at the southeast corner of Los Angeles International Airport (LAX), on the shoreline of southern California.
The first flight took place 8 June 1959 with former NACA test pilot Albert Scott Crossfield in the cockpit of the Number 1 ship, 56-6670.
Scott Crossfield prepares for a flight in the North American Aviation X-15A.
While earlier rocketplanes, the Bell X-1 series, the the Douglas D-558-II, and the Bell X-2, were airplanes powered by rocket engines, the X-15 was a quantum leap in technology. It was a spacecraft.
Like the other rocketplanes, the X-15 was designed to be carried aloft by a “mothership,” rather than to takeoff and climb to the test altitude under its own power. The carrier aircraft was originally to be a Convair B-36 intercontinental bomber but this was soon changed to a Boeing B-52 Stratofortress. Two B-52s were modified to carry the X-15: NB-52A 52-003, The High and Mighty One, and NB-52B 52-008, Balls 8.
From 8 June 1959 to 24 October 1968, the three X-15s were flown by twelve test pilots, three of whom would qualify as astronauts in the X-15. Two would go on to the Apollo Program, and one, Neil Alden Armstrong, would be the first human to set foot on the surface of the Moon, 20 July 1969. Joe Engle would fly the space shuttle. Four of the test pilots, Petersen, White, Rushworth, and Knight, flew in combat during the Vietnam War, with Bob White being awarded the Air Force Cross. Petersen, Rushworth and White reached flag rank.
One pilot, John B. (“Jack”) McKay, was seriously injured during an emergency landing at Mud Lake, Nevada, 9 November 1962. Another, Michael James Adams, was killed when the Number 3 ship, 56-6672, went into a hypersonic spin and broke up on the program’s 191st flight, 15 November 1967.
North American Aviation, Inc., X-15A-1 56-6670 on Rogers Dry Lake, Edwards Air Force Base, California. (NASA Image E-5251)
Flown by a single pilot/astronaut, the X-15 is a mid-wing monoplane with dorsal and ventral fin/rudders and stabilators. The wing had no dihdral, while the stabilators had a pronounced -15° anhedral. The short wings have an area of 200 square feet (18.58 square meters) and a maximum thickness of just 5%. The leading edges are swept to 25.64°. There are two small flaps but no ailerons. The entire vertical fin/rudder pivots for yaw control.
Above 100,000 feet (30,840 meters) altitude, conventional aircraft flight control surfaces are ineffective. The X-15 is equipped with a system of reaction control jets for pitch, roll and yaw control. Hydrogen peroxide was passed through a catalyst to produce steam, which supplied the control thrusters.
The forward landing gear consists of a retractable oleo strut with steerable dual wheels and there are two strut/skids at the rear of the fuselage. The gear is retracted after the X-15 is mounted on the NB-52 and is extended for landing by its own weight.
North American Aviation, Inc., X-15A-3 56-6672 just before touch down on Rogers Dry Lake. (NASA Image E-7469)
The rocketplane’s cockpit featured both a conventional control stick as well as side-controllers. It was pressurized with nitrogen gas to prevent fires. The pilot wore an MC-2 full-pressure suit manufactured by the David Clark Company of Worcester, Massachusetts, with an MA-3 helmet. The suit was pressurized below the neck seal with nitrogen, while the helmet was supplied with 100% oxygen. This pressure suit was later changed to the Air Force-standardized A/P22S.
X-15 cockpit with original Lear Siegler instrument panel. (NASA image E63-9834)
The X-15 is 50.75 feet (15.469 meters) long with a wing span of 22.36 feet (6.815 meters). The height—the distance between the tips of the dorsal and ventral fins—is 13.5 feet (4.115 meters). The stabilator span is 18.08 feet (5.511 meters). The fuselage is 4.67 feet (1.423 meters) deep and has a maximum width of 7.33 feet (2.234 meters).
Since the X-15 was built of steel rather than light-weight aluminum, as are most aircraft, it is a heavy machine, weighing approximately 14,600 pounds (6,623 kilograms) empty and 34,000 pounds (15,422 kilograms) when loaded with a pilot and propellants. The X-15s carried as much as 1,300 pounds (590 kilograms) of research instrumentation, and the equipment varied from flight to flight. The minimum flight weight (for high-speed missions): 31,292 pounds (14,194 kilograms) The maximum weight was 52,117 pounds (23,640 kilograms) at drop (modified X-15A-2 with external propellant tanks).
Initial flights were flown with a 5 foot, 11 inch (1.803 meters)-long air data boom at the nose, but this would later be replaced by the “ball nose” air sensor system. The data boom contained a standard pitot-static system along with angle-of-attack and sideslip vanes. The boom and ball nose were interchangeable.
NASA Research Test Pilot Neil A. Armstrong with the first North American Aviation X-15A, 56-6670, on Rogers Dry Lake after a flight, 1960. His right hand is resting on the rocketplane’s ball nose sensor. (NASA Image E60-6286)
The X-15s were built primarily of a nickel/chromium/iron alloy named Inconel X, along with corrosion-resistant steel, titanium and aluminum. Inconel X is both very hard and also able to maintain its strength at the very high temperatures the X-15s were subjected to by aerodynamic heating. It was extremely difficult to machine and special fabrication techniques had to be developed.
Delays in the production of the planned Reaction Motors XLR99 rocket engine forced engineers to adapt two vertically-stacked Reaction Motors XLR11-RM-13 four-chamber rocket engines to the X-15 for early flights. This was a well-known engine which was used on the previous rocketplanes. The XLR11 burned a mixture of ethyl alcohol and water with liquid oxygen. Each of the engines’ chambers could be ignited individually. Each engine was rated at 11,800 pounds of thrust (58.49 kilonewtons) at Sea Level.
Two Reaction Motors Division XLR11-RM-13 four-chamber rocket engines installed on an X-15. The speed brakes of the ventral fin are shown in the open position. (NASA)
The Reaction Motors XLR99-RM-1 rocket engine was throttleable by the pilot from 28,500 to 60,000 pounds of thrust (126.77–266.89 kilonewtons). The engine was rated at 50,000 pounds of thrust (222.41 kilonewtons) at Sea Level; 57,000 pounds (253.55 kilonewtons) at 45,000 feet (13,716 meters), the typical drop altitude; and 57,850 pounds (257.33 kilonewtons) of thrust at 100,000 feet (30,480 meters). Individual engines varied slightly. A few produced as much as 61,000 pounds of thrust (271.34 kilonewtons).
The XLR99 burned anhydrous ammonia and liquid oxygen. The flame temperature was approximately 5,000 °F. (2,760 °C.) The engine was cooled with circulating liquid oxygen. To protect the exhaust nozzle, it was flame-sprayed with ceramic coating of zirconium dioxide. The engine is 6 feet, 10 inches (2.083 meters) long and 3 feet, 3.3 inches (0.998 meters) in diameter. It weighs 910 pounds (413 kilograms). The Time Between Overhauls (TBO) is 1 hour of operation, or 100 starts.
The XLR99 proved to be very reliable. 169 X-15 flights were made using the XLR99. 165 of these had successful engine operation. It started on the first attempt 159 times.
The highest speed achieved during the program was with the modified number two ship, X-15A-2 56-6671, flown by Pete Knight to Mach 6.70 (6,620 feet per second/4,520 miles per hour/7,264 kilometers per hour) at 102,700 feet (31,303 meters). On this flight, the rocketplane exceeded its maximum design speed of 6,600 feet per second (2,012 meters per second).
The maximum altitude was reached by Joe Walker, 22 August 1963, when he flew 56-6672 to 354,200 feet (107,960 meters).
The longest flight was flown by Neil Armstrong, 20 April 1962, with a duration of 12 minutes, 28.7 seconds.
North American Aviation X-15A-1 56-6670 is on display at the Smithsonian Institution National Air and Space Museum. X-15A-2 56-6671 is at the National Museum of the United States Air Force.
A North American Aviation F-100 Super Sabre chase plane follows NB-52A 52-003 prior to launch of an X-15. (NASA)
Recommended reading:
Always Another Dawn: The Story of a Rocket Test Pilot, by A. Scott Crossfield and Clay Blair, Jr., The World Publishing Company, Cleveland and New York, 1960
At The Edge Of Space, by Milton O. Thompson, Smithsonian Institution Press, 1992
X-15 Diary: The Story of America’s First Spaceship, by Richard Tregaskis, E.F. Dutton & Company, New York, 1961; University of Nebraska Press, 2004
X-15: Exploring the Frontiers of Flight, by David R. Jenkins, National Aeronautics and Space Administration http://www.nasa.gov/pdf/470842main_X_15_Frontier_of_Flight.pdf
The X-15 Rocket Plane: Flying the First Wings into Space, by Michelle Evans, University of Nebraska Press, Lincoln and London, 2013
North American Aviation, Inc., X-15A-2 56-6671 accelerates after igniting its Reaction Motors XLR99-RM-1 rocket engine (NASA)
Milton O. Thompson with a Lockheed JF-104A Starfighter at Edwards Air Force Base, circa 1962. The JF-104A is similar to the one he ejected from, 20 December 1962. (NASA)
20 December 1962: Milton Orville Thompson, a NASA test pilot assigned to the X-15 hypersonic research program, was conducting a weather check along the X-15’s planned flight path from Mud Lake, Nevada, to Edwards Air Force Base in California, scheduled for later in the day. Thompson was flying a Lockheed F-104A-10-LO Starfighter, Air Force serial number 56-749, call sign NASA 749.
NASA 749, a Lockheed JF-104A Starfighter, 56-749, with an ALSOR sounding rocket on a centerline mount, at Edwards Air Force Base. (NASA)
In his autobiography, At the Edge of Space, Thompson described the day:
“The morning of my weather flight was a classic desert winter morning. It was cold, freezing in fact, but the sky was crystal clear and there was not a hint of a breeze—a beautiful morning for a flight.”
Completing the weather reconnaissance mission, and with fuel remaining in the Starfighter’s tanks, Milt Thompson began practicing simulated X-15 approaches to the dry lake bed.
X-15 pilots used the F-104 to practice landing approaches. The two aircraft were almost the same size, and with speed brakes extended and the flaps lowered, an F-104 had almost the same lift-over-drag ratio as the X-15 in subsonic flight. Thompson’s first approach went fine and he climbed back to altitude for another practice landing.
Lockheed F-104A-10-LO Starfighter 56-749 (NASA 749) carrying an ALSOR sounding rocket on a centerline mount. (NASA)
When Milt Thompson extended the F-104’s flaps for the second simulated X-15 approach, he was at the “high key”— over Rogers Dry Lake at 35,000 feet (10,668 meters) — and supersonic. As he extended the speed brakes and lowered the flaps, NASA 749 began to roll to the left. With full aileron and rudder input, he was unable to stop the roll. Adding throttle to increase the airplane’s airspeed, he was just able to stop the roll with full opposite aileron.
Thompson found that he could maintain control as long as he stayed above 350 knots (402 miles per hour/648 kilometers per hour) but that was far too high a speed to land the airplane. He experimented with different control positions and throttle settings. He recycled the brake and flaps switches to see if he could get a response, but there was no change. He could see that the leading edge flaps were up and locked, but was unable to determine the position of the trailing edge flaps. He came to the conclusion that the trailing edge flaps were lowered to different angles.
Thompson called Joe Walker, NASA’s chief test pilot, on the radio and explained the situation:
I told him the symptoms of my problem and he decided that I had a split trailing edge flap situation with one down and one up.
He suggested I recycle the flap lever to the up position to attempt to get both flaps up and locked. I had already tried that, but I gave it another try. Joe asked if I had cycled the flap lever from the up to the takeoff position and then back again. I said no. I had only cycled the flap lever from the up position to a position just below it and then back to the up position. Joe suggested we try it his way. I moved the flap lever from the up position all the way to the takeoff position and then back to the up position. As soon as I moved the lever to the takeoff position, I knew I had done the wrong thing.
The airplane started rolling again, but this time I could not stop it. The roll rate quickly built up to the point that I was almost doing snap rolls. Simultaneously, the nose of the airplane started down. I was soon doing vertical rolls as the airspeed began rapidly increasing. I knew I had to get out quick because I did not want to eject supersonic and I was already passing through 0.9 Mach. I let go of the stick and reached for the ejection handle. I bent my head forward to see the handle and then I pulled it. Things were a blur from that point on.
—At the Edge of Space: The X-15 Flight Program, by Milton O. Thompson, Smithsonian Institution Press, Washington and London, 1992. Chapter 5 at Pages 119–120.
Impact crater caused by the crash and explosion of Milt Thompson’s Lockheed JF-104A Starfighter, 20 December 1962. (NASA)
As Thompson descended by parachute he watched the F-104 hit the ground and explode in the bombing range on the east side of Rogers Dry Lake. He wrote, “It was only 7:30 a.m. and still a beautiful morning.”
Boeing 707-121 N708PA, photographed during its second flight on the afternoon of 20 December 1957. (Boeing)Boeing 707-121 N708PA makes its first takeoff at 12:30 p.m. on a rainy afternoon, 20 December 1957. (Boeing)
20 December 1957: The first production Boeing 707 jet-powered commercial airliner, N708PA, made its first flight at Renton, Washington. Alvin M. “Tex” Johnston, Boeing’s Chief of Flight Test, was in command, with co-pilot James R. Gannet and flight engineer Tom Layne. Takeoff was at 12:30 p.m., PST. Poor weather limited the first flight to just 7 minutes. The new airliner landed at Boeing Field. Later that day, a second flight was made, this time with a duration of 1 hour, 11 minutes.
N708PA (Serial Number 17586, Line Number 1) was a Model 707-121. The new airliner had been sold to Pan American World Airways, the launch customer, as part of an order for twenty 707s in October 1955.
Boeing’s Chief of Flight Test, Alvin M. “Tex” Johnston, in the cockpit of of the 367–80, “Dash Eighty,” 1954. (LIFE Magazine via Jet Pilot Overseas)
The Boeing Model 707 was developed from the earlier Model 367–80, the “Dash Eighty,” prototype for an air-refueling tanker which would become the KC-135A Stratotanker. The 707 was a four-engine jet transport with swept wings and tail surfaces. The leading edge of the wings were swept at a 35° angle.
N708PA was initially used for flight testing by Boeing. Once this was completed, it was prepared for commercial service and delivered to Pan American at San Francisco International Airport (SFO), 30 November 1958. Pan Am named the new airliner Clipper Constitution.
Boeing 707-121 N708PA under maintenance at Renton, Washington. (Boeing)
In February 1965, the airliner was upgraded to 707-121B standards, which replaced the original turbojet engines with quieter, more efficient Pratt & Whitney JT3D-1 turbofan engines which produced 17,000 pounds of thrust. The wing inboard leading edges were modified to the design of the Model 720 and there was a longer horizontal tail plane.
Clipper Constitution flew for Pan Am for nearly seven years, until 17 September 1965 when it crashed into Chances Peak, a 3,002 foot (915 meters) volcano on the Caribbean island of Montserrat. The point impact was 242 feet (74 meters) below the summit. All aboard, a crew of 9 and 21 passengers, were killed.
Boeing 707-121 N708PA, with both Boeing and Pan American corporate markings. (Unattributed)
The Boeing Model 707-121 was a four-engine jet transport with swept wings and tail surfaces. The leading edge of the wings were swept at a 35° angle. The airliner had a flight crew of four: pilot, co-pilot, navigator and flight engineer.
The 707-121 was 145 feet, 1 inch (44.221 meters) long with a wing span of 130 feet, 10 inches (39.878 meters). The top of the vertical fin stood 42 feet, 5 inches (12.929 meters) high. The 707 pre-dated the ”wide-body” airliners, having a fuselage width of 12 feet, 4 inches (3.759 meters). The airliner’s empty weight is 122,533 pounds (55,580 kilograms). Maximum take off weight is 257,000 pounds (116,573 kilograms).
The first versions were powered by four Pratt & Whitney Turbo Wasp JT3C-6 turbojet engines, producing 11,200 pounds of thrust (49,820 kilonewtons), and 13,500 pounds (60.051 kilonewtons) with water injection. This engine was a civil variant of the military J57 series. It was a two-spool axial-flow turbojet engine with a 16-stage compressor and 2 stage turbine. The JT3C-6 was 11 feet, 6.6 inches (3.520 meters) long, 3 feet, 2.9 inches (0.988 meters) in diameter, and weighed 4,235 pounds (1,921 kilograms).
At MTOW, the 707 required 11,000 feet (3,352.8 meters) of runway to take off.
The 707-121 had a maximum speed of 540 knots (1,000 kilometers per hour). It’s range was 2,800 nautical miles (5,186 kilometers).
The Boeing 707 was in production from 1958 to 1979. 1,010 were built. Production of 707 airframes continued at Renton until the final one was completed in April 1991. As of 2011, 43 707s were still in service.
Boeing 707-121 N708PA retracting its landing gear after takeoff at Seattle Tacoma Airport. (Unattributed)
Technical Sergeant Forrest Lee Vosler, Air Corps, United States Army. (U.S. Air Force)
MEDAL OF HONOR
VOSLER, FORREST L.
(Air Mission)
The President of the United States takes pleasure in awarding the MEDAL of HONOR to
STAFF SERGEANT FORREST L. VOSLER,
AIR CORPS, UNITED STATES ARMY,
for service as set forth in the following
CITATION:
“For conspicuous gallantry in action against the enemy above and beyond the call of duty while serving as a radio operator-air gunner on a heavy bombardment aircraft in a mission over Bremen, Germany, on 20 December 1943. After bombing the target, the aircraft in which T/Sgt. Vosler was serving was severely damaged by antiaircraft fire, forced out of formation, and immediately subjected to repeated vicious attacks by enemy fighters. Early in the engagement a 20-mm. cannon shell exploded in the radio compartment, painfully wounding T/Sgt. Vosler in the legs and thighs. At about the same time a direct hit on the tail of the ship seriously wounded the tail gunner and rendered the tail guns inoperative. Realizing the great need for firepower in protecting the vulnerable tail of the ship, T/Sgt. Vosler, with grim determination, kept up a steady stream of deadly fire. Shortly thereafter another 20-mm. enemy shell exploded, wounding T/Sgt. Vosler in the chest and about the face. Pieces of metal lodged in both eyes, impairing his vision to such an extent that he could only distinguish blurred shapes. Displaying remarkable tenacity and courage, he kept firing his guns and declined to take first-aid treatment. The radio equipment had been rendered inoperative during the battle, and when the pilot announced that he would have to ditch, although unable to see and working entirely by touch, T/Sgt. Vosler finally got the set operating and sent out distress signals despite several lapses into unconsciousness. When the ship ditched, T/Sgt. Vosler managed to get out on the wing by himself and hold the wounded tail gunner from slipping off until the other crewmembers could help them into the dinghy. T/Sgt. Vosler’s actions on this occasion were an inspiration to all serving with him. The extraordinary courage, coolness, and skill he displayed in the face of great odds, when handicapped by injuries that would have incapacitated the average crew member, were outstanding.”
/s/ Franklin D. Roosevelt
Technical Sergeant Forrest L. Vosler, Air Corps, United States Army, is awarded the Medal of Honor by President Franklin Delano Roosevelt in a ceremony in the Oval Office of the White House, Washington, D.C., 31 August 1944. Shaking Sergeant Vosler’s hand is Under Secretary of War Robert Porter Patterson, Sr. (U.S. Air Force)
Staff Sergeant Forrest Lee Vosler was the radio operator/top gunner aboard the Boeing B-17F-65-BO Flying Fortress 42-29664, Jersey Bounce, Jr.,¹ one of 21 B-17s of the 303rd Bombardment Group, Heavy, sent on Mission No. 90, an attack against Bremen, Germany. The bomber was under the command of 2nd Lieutenant John F. Henderson. Captain Merle R. Hungerford, an instructor pilot, acted as co-pilot. The bombers encountered heavy antiaircraft fire over the target, and were attacked by as many as 125 enemy fighters. Bombing from an altitude of 26,200 feet (7,986 meters), the B-17s dropped 24 tons of incendiary bombs.
Staff Sergeant Forrest Lee Volser was the radio operator on this Boeing B-17F-65-BO Flying Fortress, 42-29664, the “Jersey Bounce Jr.” (U.S. Air Force)
Jersey Bounce, Jr. was hit by anti-aircraft artillery just after its bomb load was released. The number 1 engine, outboard, left wing, and the number 4 engine, outboard, right wing, were damaged. When the B-17 slowed and dropped out of its formation, it became a target of opportunity for the Luftwaffe fighters.
The crew reported that as many as ten fighters attacked, one after another. Flight engineer and top turret gunner Staff Sergeant William H. Simpkins, Jr., was credited with destroying a Focke-Wulf Fw 190 fighter, and right waist gunner Sergeant Ralph F. Burkart shot down a Messerschmitt Me 210 twin-engine heavy fighter. Sergeant Stanley E. Moody, the left waist gunner, destroyed a Messerschmitt Bf 109 and probably shot down a Messerschmitt Bf 110 twin-engine fighter.
The heavily-damaged bomber flew at low altitude as it headed for the North Sea, and then toward England. Vosler sent repeated distress signals which allowed search and rescue aircraft to locate the B-17. Lieutenant Henderson ditched 42-29644 within sight of land. The crew were quickly rescued by a small coastal freighter, MV Empire Sportsman.² The bomber crew was then transferred to a British air-sea rescue boat.
Forrest Lee Vosler was born at Lyndonville, New York, 29 July 1923. He was the son of William I. Vosler, a farmer, and Lottie I. Furness Volser. He attended Livonia Central High School, Livonia, New York, graduating in 1941. He was employed as a drill press operator by General Motors at Rochester, New York.
Forrest Lee Vosler enlisted in the Air Corps, United States Army, at Rochester, 8 October 1942. He was 6 feet, 1 inch (1.854 meters) tall and weighed 147 pounds (66.7 kilograms). After completing basic training at Atlantic City, New Jersey, Private Vosler trained as a radio operator at Scott Field, Illinois, and as an aerial gunner at Harlingen, Texas. After completing training Private Vosler was promoted to Sergeant, 25 May 1943. In August 1943, he was promoted to Staff Sergeant. Deployed to the United Kingdom, Staff Sergeant Vosler was assigned to the 358th Bombardment Squadron, Heavy, of the 303rd Bombardment Group, Heavy, at RAF Molesworth (AAF-107), Cambridgeshire, England.
Technical Sergeant Vosler was the third of only four enlisted airmen two be awarded the Medal of Honor during World War II. Vosler was hospitalized for the next 12 months. After recuperating from his wounds, Vosler was discharged from the Army Air Corps, 17 October 1944. In addition to the Medal of Honor, Forrest Vosler had been awarded the Silver Star, the Purple Heart, Air Medal, Army Good Conduct Medal, American Campaign Medal, European-African-Middle Eastern Campaign Medal with one bronze service star, World War II Victory Medal and the Presidential Unit Citation.
Following the War, Forrest Volser was employed as an engineer at radio station WSYR, the oldest continuously operating radio station in the Syracuse, New York, area. He attended the College of Business Administration, Syracuse University, at Syracuse, New York. He was a member of the Sigma Chi (ΣΧ) fraternity.
Forrest Vosler married Miss Virginia Frances Slack, 28 October 1945, at the Grace Episcopal Church, Syracuse, New York. The ceremony was presided over by Rev. James R. Rockwell. They would have a daughter, Sondra Lee Vosler, and a son, Marcellus Vosler.
Vosler had lost one eye and found that blurred vision in his remaining eye made it impossible to keep up with his studies. He dropped out of college at the end of the 1945 fall semester.
“Woody” Vosler worked for the Veterans Administration for thirty years.
Forrest Lee Vosler died at Titusville, Florida, 17 February 1992 at the age of 68 years. He was buried at Arlington National Cemetery.
The Forrest L. Vosler Noncommissioned Officer Academy and the Forrest L. Vosler Veterans Memorial Park at Peterson Air Force Base, Colorado, are named in his honor.
A Boeing B-17F Flying Fortress (B-17F-95-BO 42-30243). (U.S. Air Force)
Boeing B-17F-65-BO Flying Fortress 42-29664, Jersey Bounce, Jr. The bomber was on its 32nd combat mission. It had been flown by at least nine different pilots and with different combat crews.
42-29664 was delivered from the Boeing plant in Seattle, Washington, to Denver, Colorado, 30 January 1943. It arrived at Salina, Kansas, 12 February 1943, and was sent on to Morrison, New Jersey, 28 February 1943. It was then flown across the north Atlantic Ocean to England. The new B-17F was assigned to the 358th Bombardment Squadron, 303rd Bombardment Group (Heavy), at RAF Molesworth, Cambridgeshire, England, 21 March 1943. It carried group identification markings VK C painted on its fuselage.
The Boeing B-17F Flying Fortress was a four-engine heavy bomber operated by a flight crew of ten. It was 74 feet, 9 inches (22.784 meters) long with a wingspan of 103 feet, 9.375 inches (31.633 meters) and an overall height of 19 feet, 1 inch (5.187 meters). Its empty weight was 34,000 pounds (15,422 kilograms), 40,437 pounds (18,342 kilograms) loaded, and the maximum takeoff weight was 56,500 pounds (25,628 kilograms).
Boeing B-17F Flying Fortress. (U.S. Air Force)
The B-17F was powered by four air-cooled, supercharged, 1,823.129-cubic-inch-displacement (29.875 liters) Wright Cyclone C9GC (R-1820-97) nine-cylinder radial engines with turbochargers, producing 1,200 horsepower at 2,500 r.p.m. for takeoff and 1,000 horsepower at 2,300 r.p.m. at Sea Level. War Emergency Power was 1,380 horsepower. The Cyclones turned three-bladed constant-speed Hamilton-Standard Hydromatic propellers with a diameter of 11 feet, 7 inches (3.835 meters) though a 0.5625:1 gear reduction. The R-1820-97 engine is 47.80 inches (1.214 meters) long and 55.10 inches (1.399 meters) in diameter. It weighs 1,315 pounds (596 kilograms).
These engines gave the B-17F a cruising speed of 200 miles per hour (322 kilometers per hour). The maximum speed was 299 miles per hour (481 kilometers per hour) at 25,000 feet, though with War Emergency Power, the bomber could reach 325 miles per hour (523 kilometers per hour) at 25,000 feet for short periods. The service ceiling was 37,500 feet (11,430 meters).
With a normal fuel load of 2,520 gallons (9,540 liters) the B-17F had a maximum range of 2,880 miles (4,635 kilometers). Carrying a 6,000 pound (2,722 kilogram) bomb load, the range was 1,300 miles (2,092 kilometers).
358th Bombardment Squadron flight crew. Most of the men in this photograph were aboard “Jersey Bounce Jr.”, 20 December 1943. Front, left to right: Sgt. Edward Ruppel, ball turret gunner; T/Sgt. Forest L. Vosler, radio operator/top gunner; S/Sgt. William H. Simpkins, Jr., flight engineer/top turret gunner; Sgt. Gratz, tail gunner (replacing the critically wounded Sgt. George W. Burke, who was rescued by Vosler); Sgt. Ralph F. Burkhart, waist gunner. Rear, left to right: 2nd Lt. Warren S. Wiggins, navigator; 2nd Lt. Woodrow W. Monkres, bombardier; 2 Lt. Walter J. Ames, co-pilot; 2nd Lt. John F. Henderson, aircraft commander. (U.S. Air Force)
The B-17F Flying Fortress was armed with up to 13 air-cooled Browning AN-M2 .50-caliber machine guns. Power turrets mounting two guns each were located at the dorsal and ventral positions.
The maximum bomb load was 20,800 pounds over very short ranges. Normally, 4,000–6,000 pounds (1,815–2,722 kilograms) were carried. The internal bomb bay could be loaded with a maximum of eight 1,600 pound (725.75 kilogram) bombs. Two external bomb racks mounted under the wings between the fuselage and the inboard engines could carry one 4,000 pound (1,814.4 kilogram) bomb, each, though this option was rarely used.
The B-17 Flying Fortress first flew in 1935, and was was in production from 1937 to 1945. 12,731 B-17s were built by Boeing, Douglas Aircraft Company and Lockheed-Vega. (The manufacturer codes -BO, -DL and -VE follows the Block Number in each airplane’s type designation.) 3,405 of the total were B-17Fs, with 2,000 built by Boeing, 605 by Douglas and 500 by Lockheed-Vega.
Only three B-17F Flying Fortresses remain in existence.
This restored Boeing B-17F-70-BO Flying Fortress, 42-29782, is on display at The Museum of Flight at Seattle’s Boeing Field. (Boeing)
¹ “Jersey Bounce” was a popular song of 1942.
² M/V Empire Sportsman was built by Richards Ironworks Ltd., Lowestoft, Suffolk, 1943. 325 Gross Registered Tons.
