Jimmy Doolittle with his DH-4B-1-S, A.S. 22-353, during a refueling stop at Kelly Field, San Antonio, Texas, 4 September 1922. Photograph by H.L. Summerville. (National Air and Space Museum Archives, Smithsonian Institution)
4 September 1922: First Lieutenant James H. (“Jimmy”) Doolittle, Air Service, United States Army, made the first transcontinental crossing of the United States in a single day when he flew a DH.4B-1-S single-engine biplane, Air Service Serial Number 22-353, from Pablo Beach, Florida, ¹ to Rockwell Field, San Diego, California, a distance of 2,106 miles (3,390 kilometers). He made one refueling stop at Kelly Field, San Antonio, Texas, which lasted 1 hour, 16 minutes. The total duration of the flight was 21 hours, 19 minutes.
Lieutenant James H. Doolittle, in the cockpit of the DH-4B, is greeted on his arrival at Kelly Field, San Antonio, Texas. (Peter M. Bowers Collection)
Lieutenant Doolittle was awarded the Distinguished Flying Cross for “demonstrating the possibility of moving Air Corps units to any portion of the United States in less than 24 hours.”
Maintenance technicians service Lieutenant Doolittle’s DH-4B-1-S at Kelly Field.
The Airco DH.4 was a very successful airplane of World War I, designed by Geoffrey de Havilland. It was built by several manufacturers in Europe and the United States. The DH-4B was a rebuilt DH.4 with fuel capacity increased to 110 gallons (420 liters). The DH-4B was 30 feet, 6 inches (9.296 meters) long with a wingspan of 43 feet, 6 inches (13.259 meters) and height of 10 feet, 4 inches (3.150 meters). Loaded weight of the standard DH-4B was 3,557 pounds (1,613.4 kilograms).
In place of the Rolls-Royce Eagle VII V-12 of the British-built version, Army Air Service DH-4s were powered by a water-cooled, normally-aspirated, 1,649.336-cubic-inch-displacement (27.028 liter) Liberty L-12 single overhead cam (SOHC) 45° V-12 engine with a compression ratio of 5.4:1. The Liberty produced 408 horsepower at 1,800 r.p.m. The L-12 as a right-hand tractor, direct-drive engine. It turned turned a two-bladed fixed-pitch wooden propeller. The Liberty 12 was 5 feet, 7.375 inches (1.711 meters) long, 2 feet, 3.0 inches (0.686 meters) wide, and 3 feet, 5.5 inches (1.054 meters) high. It weighed 844 pounds (383 kilograms).
The Liberty L12 aircraft engine was designed by Jesse G. Vincent of the Packard Motor Car Company and Elbert J. Hall of the Hall-Scott Motor Company. This engine was produced by Ford Motor Company, as well as the Buick and Cadillac Divisions of General Motors, The Lincoln Motor Company (which was formed by Henry Leland, the former manager of Cadillac, specifically to manufacture these aircraft engines), Marmon Motor Car Company and Packard. Hall-Scott was too small to produce engines in the numbers required.
This same airplane, DH.4B-1-S, A.S. No. 22-353, was flown from the Gulf of Mexico to the Canadian border by Lieutenant H.G. Crocker, 26 May 1923.
Lieutenant Doolittle’s DH-4B-1-S is serviced by maintenance technicians at Kelly Field, Texas.First Lieutenant James Harold Doolittle, Air Service, United States Army. “Jimmy Doolittle is wearing the Military Aviator badge and the World War I Victory Medal ribbon. (NASM/U.S. Air Force)
Jimmy Doolittle was one of America’s foremost pioneering aviators. He set many records, won air races, tested and developed new flying equipment and techniques. He was a highly-educated military officer, having earned his Bachelor of Arts from the University of California Berkeley School of Mines, and M.S and D.Sc. degrees in Aeronautical Engineering from the Massachusetts Institute of Technology.
During World War II Colonel Doolittle planned and led the famous Halsey-Doolittle Raid against Japan, 18 April 1942, for which he was awarded the Medal of Honor. As a brigadier general he commanded Twelfth Air Force in North Africa. Promoted to major general, he was given command of the Fifteenth Air Force in the Mediterranean Theater. From 1943 until 1945, Lieutenant General Doolittle commanded Eighth Air Force. He was preparing his command to move against Japan, equipped with Boeing B-29 Superfortress bombers when World War II came to an end.
Lieutenant General James H. Doolittle, commanding Eighth Air Force, in the cockpit of a Boeing B-29 Superfortess.
After the war, Lieutenant General Doolittle was placed on the inactive list. On 4 April 1985, by Act of Congress, James H. Doolittle was promoted to General.
General James Harold Doolittle is the only person to be awarded both the Medal of Honor and the Medal of Freedom. He died 27 September 1993 at the age of 96 years. He was buried at the Arlington National Cemetery, Arlington, Virginia.
Similar to the DH.4B-1-S flown by Lieutenant Jimmy Doolittle on his transcontinental flight, this is a reproduction DH.4B from the collection of the National Museum of the United States Air Force. (U.S. Air Force)
¹ Pablo Beach, Florida, was renamed Jacksonville Beach on 15 June 1925.
James H. Doolittle with his Gee Bee R-1, NR2100, at the Cleveland National Air Races, 1932. (NASM)The Thompson Trophy
3 September 1932: At the Cleveland National Air Races, James H. (“Jimmy”) Doolittle won the Thompson Trophy Race with his Granville Brothers Aircraft Company Gee Bee Supersportster R-1, NR2100.
He also set a Fédération Aéronautique Internationale (FAI) World Speed for Record Over a 3 Kilometer Course, averaging 473.82 kilometers per hour (294.42 miles per hour). ¹
The highest speed attained by Doolittle during his four passes over the 3-kilometer course was 497.352 kilometers per hour (309.040 miles per hour).
Jimmy Doolittle crosses the finish line at Cleveland, 1932.
The New York Daily News reported:
DOOLITTLE FLASHES TO 296-PER RECORD
CLEVELAND, SEPT. 3. (AP).—Major James H. Doolittle today shattered the world land plane speed record by averaging 296.287 miles an hour over a three-kilometer course at the National Air races.
Denied in two previous attempts, he bested the eight-year mark held by Warrant Officer Bonnet of France by 17.807 miles an hour.
He made six dashes, of 293.047, 287.154. 309.040, 281.966, 306.990, and 283.156 miles an hour. By the rules, any four consecutive laps may be taken for the record and the second to fifth laps, inclusive, gave the highest average.
A Light Cross-Wind.
A five to six miles an hour cross-wind was blowing over the course as Major Doolittle, who also holds the American seaplane record, roared along in the snub-nosed Flying Silo which Russell Boardman, transatlantic flier, had planned to fly at the races.
Doolittle grinned broadly as he was informed of his new record when he landed.
“I’m contented with this,” he said happily. He will not attempt to set a faster record, at least for the time being.
His plane pumped oil part of the time, he said, and this may have cost him another five miles an hour. The splattering oil impaired his vision somewhat, but not seriously.
Ship Will Go Faster.
“The ship behaved wonderfully,” Doolittle said on landing, “but I still think there are five miles or more in it. But it’s Russ Boardman’s ship and I think it no more than right that he should be able to take it and get out of it all that he can.”
Today’s average bested the unofficial mark of 293.193 miles an hour Doolittle set Wednesday during the eclipse and was well above the 282.672 miles an hour in an official test with a barograph the following day.
Before the new record can become official, the barograph must be calibrated and the mark accepted by the Federation Aeronautique Internationale, world governing body of sporting aviation, at Paris.
Description of Plane.
The plane used by Doolittle is a Gee Bee super-sportster. It has an 800-horsepower Wasp engine manufactured by the Pratt & Whitney Company, Hartford, Conn. The fuselage is streamlined from the engine, tapering to the knife-like rudder, just in front of which the pilot sits.
The three-kilometer course is distance of 9,844.5 feet, over which rules of the Federation Aeronautique Internationale require that the maximum altitude be seventy-five meters, or 244 feet.
There are approaches, 500 meters, or 1,620 feet, in distance, at each end of the course, in which level flight must be made.
The maximum height allowed before entering the approaches is 400 meters, or 1,320 feet, so that a dive of slightly more than 1,000 feet is permitted before entering upon the approaches to the course. The barograph is carried to check these altitudes. . . .
—SUNDAY NEWS, Vol. 12, No. 21, Sunday, 4 September 1932, Page 2, Columns 3 and 4, and Page 4, Column 1
The Gee Bee was a purpose-built racing airplane, designed by Robert Leicester Hall, who would later become the Chief Engineer for the Grumman Aircraft Engineering Corporation. It was a very small airplane, with short wings and small control surfaces. It had gained a reputation as being very dangerous. A number of famous racers of the time were killed when they lost control of the Gee Bee. However, Doolittle had a different opinion: “She is the sweetest ship I’ve ever flown. She is perfect in every respect and the motor is just as good as it was a week ago. It never missed a beat and has lots of stuff in it yet. I think this proves that the Granville brothers up in Springfield build the very best speed ships in America today.”
The Gee Bee Supersportster R-1 was a single-seat, single engine, low-wing monoplane with fixed conventional landing gear. The airplane had been designed for a load factor of 12. It was 17 feet, 8 inches (5.385 meters) long with a wingspan of 25 feet, 0 inches (7.620 meters), and height of 8 feet, 2 inches (2.489 meters). The fuselage had a maximum diameter 5 feet, 1 inch (1.549 meters). The wings were wire-braced. The angle of incidence was 2.5° and there was 4.5° dihedral. The aspect ratio was 6:1, and the wing area was 75 square feet (7.968 square meters).
The R-1 had an empty weight of 1,840 pounds (834.6 kilograms), gross weight of 2,415 pounds (1,095.4 kilograms), and maximum takeoff weight of 3,075 pounds (1,394.8 kilograms).
The Gee Bee R-1 was powered by an air-cooled, supercharged, 1,343.80-cubic-inch-displacement (22.021 liter) Pratt & Whitney Wasp T3D1 nine-cylinder direct -drive radial engine. It was rated at 730 horsepower at 2,300 r.p.m. at Sea Level. The engine turned a two-bladed U.S. Smith Engineering Co. adjustable-pitch propeller with a diameter of 8 feet, 0 inches (2.438 meters). The engine was enclosed in a NACA cowling. The T3D1 was 3 feet, 6.63 inches (1.083 meters) long, 4 feet, 3.44 inches (1.307 meters) in diameter, and weighed 763 pounds (346 kilograms).
The Gee Bee R-1 had a cruise speed was 260 miles per hour (418.4 kilometers per hour), and its maximum speed was more than 309 miles per hour (497 kilometers per hour). The stall speed was rather high at 90 miles per hour (144.8 kilometers per hour), as a result of optimizing the airplane for high speed. The air racer could climb at 6,100 feet per minute (31 meters per second). It had a range of 630 miles (1,014 kilometers) at full throttle. ²
Gee Bee Supersportster R-1 NR2100, #11, was later re-engined with a Pratt & Whitney Hornet. It was destroyed when it crashed on takeoff after refueling at Indianapolis, Indiana, 1 July 1933. The pilot, Russell Boardman, was killed.
Jimmy Doolittle hops out of the Bee Bee R-1. (San Diego Air and Space Museum)
Jimmy Doolittle was one of America’s foremost pioneering aviators. He set many records, won air races, tested and developed new flying equipment and techniques. He was a highly-educated military officer, having earned his Bachelor of Arts from the University of California Berkeley School of Mines, and M.S and D.Sc. degrees in Aeronautical Engineering from the Massachusetts Institute of Technology.
During World War II Colonel Doolittle planned and led the famous Halsey-Doolittle Raid against Japan, 18 April 1942, for which he was awarded the Medal of Honor.
As a brigadier general, Doolittle commanded the Twelfth Air Force in North Africa. Promoted to major general, he was given command of the Fifteenth Air Force in the Mediterranean Theater. From 1943 until 1945, Lieutenant General Doolittle commanded Eighth Air Force. He was preparing his command to move against Japan, equipped with Boeing B-29 Superfortress bombers, when World War II came to an end.
(Original Caption) 6/14/1945-Seattle, WA- Lt. General, James H. Doolittle, after making his first flight in the Boeing B-29 Superfortress, during a brief visit here said, “It’s a fine airplane and handles nicely.”
After the war, Lieutenant General Doolittle was placed on the inactive list. On 4 April 1985, by Act of Congress, James H. Doolittle was promoted to General, United States Air Force.
General James Harold Doolittle is the only person to be awarded both the Medal of Honor and the Medal of Freedom. He died 27 September 1993 at the age of 96 years. He was buried at the Arlington National Cemetery, Arlington, Virginia.
Lieutenant General James H. Doolittle, U.S. Army Air Force (U.S. Army Photo C-2102)
¹ FAI Record File Number 8751
² All Gee Bee Supersportster R-1 specifications from Zantford D. Granville, writing in Aero Digest Magazine, July 1933. See http://goldenageofaviation.org/geebeer2.html
First Lieutenant James Harold Doolittle, Air Service, United States Army. “Jimmy” Doolittle is wearing an embroidered Airplane Pilot badge and the World War I Victory Medal ribbon. (U.S. Air Force)
1 July 1920: James Harold Doolittle was commissioned as a second lieutenant, Air Service, United States Army. The commission was accepted 19 September 1920. On the same date, he was promoted to the rank of first lieutenant, Air Service. This was accepted 17 March 1921.
“Jimmy” Doolittle had enlisted as a private, 1st class, in the Aviation Section, Signal Enlisted Reserve Corps, 10 November 1917. He received a commission as a second lieutenant, Aviation Section, Signal Officers’ Reserve Corps, 11 March 1918, and was assigned to active duty the following day.
Following the passage of the National Defense Act of 1920, which established the Air Service, Doolittle’s O.R.C. commission was vacated 19 September 1920, and he was given a commission as a first lieutenant, Air Service, United States Army, retroactive to 1 July 1920.
Aviator’s Certificate No. 1702, Aero Club of America. (NASM)
12 June 1918: 2nd Lieutenant James Harold Doolittle, Aviation Section, Signal Officers’ Reserve Corps, was granted Aero Club of America pilot certificate No. 1702 on behalf of the Fédération Aéronautique Internationale.
The license was signed by Alan Ramsay Hawley, President, and William Hawley, Secretary.
Blue, leather-bound book containing James H. Doolittle’s Aero Club of America Aviator’s Certificate. (NASM)
1st Lieutenant James H. Doolittle, United States Army Air Corps, at the 1929 Cleveland National Air Races. Jimmy Doolittle is seen in this photograph sitting on the turtle deck of the Curtiss P-1C Hawk. (National Air and Space Museum)
25 May 1927: At Wright Field, now Wright-Patterson Air Force Base, Dayton, Ohio, First Lieutenant James H. “Jimmy” Doolittle, United States Army Air Corps, was the first pilot to successfully perform an outside loop.
Flying a Curtiss P-1B Hawk pursuit, he began the maneuver in level flight at 10,000 feet (3,048 meters), then pushed the nose down into a dive. When he reached 280 miles per hour (450 kilometers per hour), Doolittle continued to pitch the nose “down” and the airplane flew through a complete vertical circle, with the pilot’s head to the outside of the loop.
Lt. Jimmy Doolittle with a Curtiss P-1 Hawk, 4 February 1928. (National Museum of the United States Air Force)
Jimmy Doolittle attempted to repeat the outside loop at the 1929 Cleveland National Air Races, with a Curtiss P-1C Hawk, serial number 29-227. The airplane’s wings came off but Doolittle parachuted to safety. (The Curtiss P-1C used wing radiators instead of the large radiator under the nose of the P-1B. This substantially reduced the aerodynamic drag which allowed the airplane to accelerate to too high an airspeed during Doolittle’s maneuver.)
A crowd surrounds the wreckage of Jimmy Doolittle’s Curtiss P-1C Hawk after it crashed during an aerobatic demonstration at the 1929 Cleveland National Air Races. (Cleveland State University, Michael Schwartz Library, Special Collections, Cleveland Press Collection)
Jimmy Doolittle was one of America’s foremost pioneering aviators. He set many records, won air races, tested and developed new flying equipment and techniques. He was a highly-educated military officer, having earned his Bachelor of Arts from the University of California Berkeley School of Mines, and M.S and D.Sc. degrees in Aeronautical Engineering from the Massachusetts Institute of Technology. As a pioneer aviator, he won every international air race, and had been awarded every international aviation trophy. He was also the first pilot to fly completely by reference to instruments.
During the early days of America’s involvement in World War II, Lieutenant Colonel Doolittle planned and led the Halsey-Doolittle B-25 raid on Japan. He was awarded the Medal of Honor and promoted to brigadier general, and then placed in command of the Twelfth Air Force in North Africa. As a major general, he commanded the Fifteenth Air Force in the Mediterranean Theater of Operations. Lieutenant General Doolittle commanded the Eighth Air Force in England from January 1944 to September 1945. He supervised the transition of the 8th to the Boeing B-29 Superfortress and its eventual transfer to bases on Okinawa to continue the war against Japan. World War II came to an end before any of the 8th’s B-29s actually moved west.
Lieutenant General James H. Doolittle, U.S. Army Air Force (U.S. Army Photo C-2102)
After the war, Lieutenant General Doolittle was placed on the inactive list. On 4 April 1985, by Act of Congress, James H. Doolittle was promoted to General, United States Air Force, Retired.
General James Harold Doolittle is the only person to be awarded both the Medal of Honor and the Medal of Freedom. He died 27 September 1993 at the age of 96 years. He was buried at the Arlington National Cemetery, Arlington, Virginia.
Curtiss P-1B Hawk, A.C. 27-75. (U.S. Air Force)
The Curtiss P-1B Hawk was a single-engine, single-seat, single-bay biplane pursuit, an aircraft type now known as a fighter. The airplane and its D-12 Conqueror engine were both built by the Curtiss Aeroplane and Motor Co., Garden City, New York.
The P-1B was 22 feet, 10 inches (6.960 meters) long with an upper wingspan of 31 feet, 6 inches (9.601 meters). The lower wing had a span of 26 feet, 0 inches (7.925 meters), a narrower chord, and was staggered 3 feet, 2½ inches (0.978 meters) behind the upper. Both wings had significant taper with rounded tips. Their angle of incidence was 0°. The upper wing had no dihedral, while the inboard lower wing had 1°, and the outer, 5°. The total wing area was 252 square feet (23.4 square meters). The horizontal stabilizer span was 10 feet, 6.0 inches (3.200 meters) and its incidence could be adjusted from +3° to -1.5°. The vertical fin was offset 2° left of the airplane’s centerline. The overall height of the airplane was 8 feet, 10 inches (2.712 meters).
The P-1B had an empty weight of 2,105 pounds (955 kilograms), gross weight of 2,932 pounds (1,330 kilograms), and maximum weight of 3,562 pounds ( kilograms).
The P-1B was powered by a liquid-cooled, normally-aspirated, 1,145.1-cubic-inch-displacement (18.8 liter) Curtiss D-12D (V-1150-3) dual overhead cam (DOHC) 4-valve 60° V-12 engine with a compression ratio of 5.7:1. It was a direct-drive engine, rated at 415 horsepower at 2,000 r.p.m. at Sea Level, and 460 horsepower at 2,300 r.p.m. The D-12 was 58¾ inches (1.492 meters) long, 34¾ inches (0.883 meters) high and 28¼ inches (0.718 meters) wide. It weighed 680 pounds (308 kilograms). The P-1B was equipped with an aluminum Curtiss-Reed propeller with a diameter of 8 feet, 9 inches (2.667 meters).
The pursuit had a cruise speed of 127 miles per hour (204 kilometers per hour). Its maximum speed was 159.6 miles per hour (256.9 kilometers per hour) at Sea Level, and 157 miles per hour (253 kilometers per hour) at 5,000 feet (1,524 meters). It had a service ceiling of 21,400 feet (6,523 meters) and absolute ceiling of 22,900 feet (6,980 meters). Its range was 342 miles (550 kilometers).
The P-1B was armed with two fixed air-cooled Browning machine guns, one .50-caliber and one .30-caliber.
The Air Corps ordered 93 Curtiss P-1 Hawks between 1925 and 1929.
Curtiss P-1A Hawk, 25-410, similar in appearance to the P-1B that Doolittle flew into an outside loop. (U.S. Air Force)
