Joseph Albert Walker in the cockpit of North American Aviation X-15A 56-6670, after a flight, 1960. (NASA)
24 March 1960: After North American Aviation’s Chief Engineering Test Pilot, Albert Scott Crossfield, had made the first flights in the new X-15 hypersonic research rocketplane (one gliding, eight powered), NASA Chief Research Test Pilot Joseph Albert Walker made his first familiarization flight.
The X-15, 56-6670, the first of three built by North American Aviation, Inc., was carried aloft under the right wing of a Boeing NB-52A Stratofortress, 52-003, flown by John E. Allavie and Fitzhugh L. Fulton.
Fitz Fulton and and Jack Allavie with a Boeing NB-52 drop ship. (Jet Pilot Overseas)
The rocketplane was dropped from the mothership over Rosamond Dry Lake at 15:43:23.0 local time, and Joe Walker ignited the Reaction Motors XLR-11 rocket engine. The engine burned for 272.0 seconds, accelerating Walker and the X-15 to Mach 2.0 (1,320 miles per hour/2,124.3 kilometers per hour) and a peak altitude of 48,630 feet (14,822.4 meters). Walker landed on Rogers Dry Lake at Edwards Air Force Base after a flight of 9 minutes, 8.0 seconds.
Joe Walker made 25 flights in the three X-15 rocket planes from 24 March 1960 to 22 August 1963. He achieved a maximum Mach number of 5.92, maximum speed of 4,104 miles per hour (6,605 kilometers per hour) and maximum altitude of 354,200 feet (107,960 meters).
Joe Walker with the Number 2 North American Aviation X-15, 56-6671, on Rogers Dry Lake. (NASA)
Joe Walker was killed in a mid-air collision between his Lockheed F-104N Starfighter and a North American Aviation XB-70A Valkyrie near Barstow, California, 1 June 1966.
The number one ship, 56-6670, made 81 of the 199 flights of the X-15 Program. It was the first to fly, and also the last, 24 October 1968. Today, it is in the collection of the Smithsonian Institution National Air and Space Museum.
North American Aviation, Inc. X-15A 56-6670 on Rogers Dry Lake, Edwards Air Force Base, California. (NASA)
Stammlager Luft III prison in Province of East Silesia, World War II. (Muzeum Obózow Jenieckich W Żaganiu)
24 March 1944: At about 2230 hours, the first of 76 Allied prisoners of war interred at Stammlager LuftIII (Stalag Luft III) began to escape through a 30-foot-deep (9 meters), 320-foot-long (98 meters) tunnel, code-named “Harry.”
Aerial reconnaissance image of Stalag Luft III, 17 September 1944. (American Air Museum in Britain UPL 36335)
The prison, located just south of Sagan (Żagań) in East Silesia (now a part of Poland) was specially constructed to house captured Royal Air Force and other Allied airmen, and was controlled by the German air force, the Luftwaffe. Prior to this escape, the German captors had discovered at least 98 tunnels at the prison.
Popularly known as “The Great Escape,” this was the subject of a 1950 book, The Great Escape, by Paul Brickhill, who was a POW at the prison. His book was adapted into a very popular motion picture, “The Great Escape,” in 1963.
Squadron Leader Thomas Gresham Kirby-Green, RAF, and Flight Lieutenant Gordon Arthur Kidder, RCAF, were murdered by Gestapo agents near Zlín, Moravia, 29 March 1944. (This photograph may be of a reconstruction by the RAF Special Investigations Branch, circa 1946)
Jackie Cochran with her Beechcraft D17W Staggerwing, NR18562. (FAI)
24 March 1939: During a 2 hour, 26 minute flight over southern California, Jacqueline Cochran established a U.S. National Altitude Record for Women of 9,160 meters (30,052 feet). She flew a Beechcraft D17W “Staggerwing,” serial number 164, registered NR18562.¹
A National Aeronautic Association official, Larry Therkelson, took the recording barograph from the airplane and sent it to the N.A.A. headquarters in Washington, D.C., for certification. The record had previously been held by Ruth Rowland Nichols.²
“Were I to make the simple statement that I climbed to an altitude of thirty-three thousand feet, that statement in and of itself would mean nothing because I have often gone higher than that. But when I add that I did this in 1937 in a fabric-covered biplane without heating, without pressurization and without an oxygen mask, the elements of an accomplishment are added. I nearly froze; the pipestem between my teeth through which I tried to get an oxygen supply from a tank and connecting tube was inadequate for the purpose, and I became so disoriented through lack of oxygen that it took over an hour to get my bearings and make a landing. The difference between the pressure my body was accustomed to on the ground and the atmospheric pressure at 33,000 feet was such that a blood vessel in my sinus ruptured. All this was a part of the cumulative evidence that led up to cabin pressurization and and mandatory use of the oxygen mask above certain altitudes.”
— The Stars at Noon, by Jacqueline Cochran, Little, Brown and Company, Boston, 1954, Chapter IV at Pages 61–62.
According to the U.S. Centennial of Flight Commission, Jackie Cochran “. . . set more speed and altitude records than any other pilot.”
Beechcraft D17W Staggerwing NR18562, c/n 164, which Jackie Cochran used to set an altitude record, 24 March 1939, at the Beechcraft factory, Wichita, Kansas, 1937. (Beech Aircraft Corporation)
The Beechcraft Staggerwing got its name because its lower wing was placed ahead of the upper wing (negative stagger). It was a fast airplane for its time and set several speed and altitude records. The Beechcraft D17W was a special version of the D17 production model. Only two were built. Jackie Cochran purchased NR18562 from Beechcraft for $20,145.
The “Staggerwing” was a single-engine, four-place biplane with an enclosed cabin and retractable landing gear, flown by a single pilot. The basic structure was a welded tubular steel framework, with wood formers and stringers. The wings and tail surfaces were built of wood spars and ribs. The airplane was covered with doped fabric, except the cabin and engine, which were covered in sheet metal.
Beech Aircraft Corporation Model 17 “Staggerwings” under construction. (Beech B-111/U.S. Air Force)
The D17W was 26 feet, 15/32 inch (8.0677 meters) long with a wingspan of 32 feet, 0 inches (9.754 meters) and overall height of 8 feet, 0 inches (2.438 meters). It had an empty weight of 2,553 pounds (1,158 kilograms) and loaded weight of 4,200 pounds (1,905 kilograms).
While most biplanes had staggered wings, the Staggerwing was unusual in having negative stagger. (The upper wing was “staggered” aft of the lower wing.) This not only increased the pilot’s field of vision, but improved the airplane’s stability in a stall. The leading edge of the Model 17 upper wing was 2 feet, 1–19/32 inches (0.65008 meters) aft of the lower wing. The leading edges had 0° 0′ sweep. Both wings had an angle of incidence of 5° 5′. The upper wing had no dihedral, but the lower wing had +1°. The mean vertical gap between the wings was 5 feet (1.52 meters), and the chord of both wings was 5 feet, 0 inches (1.524 meters). The total wing area was 269.5 square feet (25.04 square meters). The horizontal stabilizer had 0° incidence, while the vertical fin was offset 0° 43′ to the left of the airplane’s centerline.
The Staggerwing was offered with a selection of engines of different displacements and horsepower ratings. The standard Beechcraft D17S was equipped with an air-cooled, supercharged, 986.749-cubic-inch-displacement (16.170 liters) Pratt & Whitney Wasp Jr. A, a direct-drive nine-cylinder radial engine producing 300 horsepower at 2,000 r.p.m at Sea Level.
The D17W was equipped with an air-cooled, supercharged, 986.749-cubic-inch-displacement (16.170 liters) Pratt & Whitney Wasp Junior SC-G, an experimental version of the Wasp C with a compression ratio of 6.7:1. It had 3:2 propeller reduction gearing, and drove a two-blade constant-speed Hamilton Standard propeller. The SC-G produced 525 horsepower at 2,700 r.p.m. at 9,500 feet (2,896 meters), and 575 horsepower at 2,850 r.p.m. These ratings were achieved using 87-octane gasoline. Using 100-octane aviation gasoline, the SC-G was rated at 600 horsepower at 2,850 r.p.m. for takeoff. The engine was 3 feet, 9.469 inches (1.1549 meters) long, 3 feet, 10.75 inches (1.1875 meters) in diameter, and weighed 864 pounds (391.9 kilograms).
The D17W had a maximum speed of 235 miles per hour (378 kilometers per hour) at 13,500 feet (4,115 meters). Its fuel capacity was 120 gallons (454 liters). It could climb at a maximum rate of 2,500 feet per minute (12.7 meters per second) and had a service ceiling of 30,000 feet (9,144 meters).
Jackie Cochran with her Beechcraft D17W Staggerwing, NR18562, circa 1937. A celebratory garland of flowers has been draped over the airplane’s cowl. Miss Cochran is holding what appears to be a check. (San Diego Air & Space Museum, Cliff Henderson Collection, CF_09-0050)
Jackie Cochran flew this same D17W, NR18562, in the 1937 Bendix Trophy Race, held 3 September 1937. She finished in third place with an elapsed time of 10 hours, 29 minutes, 8 seconds, averaging 194.740 miles per hour (313.404 kilometers per hour). She won a $5,500 prize.
Max Arthur Constant flew Miss Cochran’s Staggerwing in the 1938 Bendix Trophy Race. He finished in fourth place with an elapsed time of 10 hours, 14 minutes, 39 seconds, averaging 199.330 miles per hour (320.791 kilometers per hour).
Beechcraft D17W c/n 164, was impressed into military service at Tarrant Field, Texas, 12 March 1943. Assigned to the United States Army Air Corps, it was given the designation UC-43K Traveler and Air Corps serial number 42-107277. It was turned over to the Reconstruction Finance Corporation, 22 November 1944, for sale to the civil market. The airplane was now powered by a 971.930-cubic-inch displacement (15.927 liter) Wright R-975-5 Whirlwind nine-cylinder radial and was redesignated Beechcraft D17R. The Staggerwing was sold to the Carver Pump Company, Muscatine, Iowa, and registered NC50958.
The record-setting Beechcraft Staggerwing crashed at Avenger Field, Sweetwater, Texas, 15 December 1945.
Jackie Cochran’s Beechcraft D17W, NX18562, c/n 164, carrying the race number “33” circa 1938. (Unattributed)
¹ This is not the same D17W that Jackie Cochran used to set A U.S. National Speed records, 26 and 29 July 1937. Please see TDiA at: https://www.thisdayinaviation.com/26-july-1937/
² FAI Record File Number 12228: 8,761 meters (28,743 feet), 6 March 1931. Please see TDiA at: https://www.thisdayinaviation.com/6-march-1931/
Gemini III lifts off at Launch Complex 19, Cape Kennedy Air Force Station, Cape Canaveral, Florida, 14:24:00 UTC, 23 March 1965. (NASA)
23 March 1965: At 14:24:00.064 UTC, Gemini III was launched aboard a Titan II GLV rocket from Launch Complex 19 at the Cape Kennedy Air Force Station, Cape Canaveral, Florida. Major Virgil Ivan (“Gus”) Grissom, United States Air Force, a Project Mercury veteran, was the Spacecraft Commander, and Lieutenant Commander John Watts Young, United States Navy, was the pilot.
The purpose of the mission was to test spacecraft orbital maneuvering capabilities that would be necessary in later flights of the Gemini and Apollo programs
The spacecraft entered a 100.2 mile (161.2 kilometer) × 139.3 mile (224.2 kilometer) orbit, with an orbital period of 88 minutes, 18 seconds. At the end of the first orbit, Grissom used the Orbital Attitude and Maneuver System (OAMS) to move Gemini III into a 98.2 mile (158 kilometer) × 105 mile (169 kilometer) near circular orbit. During the third orbit, the spacecraft descended to 52 miles (84 kilometers) to allow normal orbital decay should the retro rocket system fail.
Gemini III made three orbits of the Earth, and splashed down after 4 hours, 52 minutes, 31 seconds. Miscalculations of the Gemini capsule’s aerodynamics caused the spacecraft to miss the intended splash down point by 69 miles (111 kilometers). Gemini III splashed down in the Atlantic Ocean at N. 22.43°, W. 70.85°, northeast of the Turks and Caicos Islands. The recovery ship was the Essex-class aircraft carrier USS Intrepid (CVS-11).
Gus Grissom would later command the flight crew of Apollo 1. He was killed with his crew during the tragic fire during a pre-launch test, 27 January 1967.
John Young served as Spacecraft Commander for Gemini 10, Command Module Pilot on Apollo 10, back-up commander for Apollo 13, commander Apollo 16, and back-up commander for Apollo 17. Later, he was commander of the maiden flight of the space shuttle Columbia STS-1 and again for STS-9 and was in line to command STS-61J when it was cancelled following the loss of the Space Shuttle Challenger.
The flight crew of Gemini III, Lieutenant Commander John W. Young, U.S. Navy, and Major Virgil I. Grissom, U.S. Air Force. (NASA)
The two-man Gemini spacecraft was built by the McDonnell Aircraft Corporation of St. Louis, the same company that built the earlier Mercury space capsule. The spacecraft consisted of a reentry module and an adapter section. It had an overall length of 19 feet (5.791 meters) and a diameter of 10 feet (3.048 meters) at the base of the adapter section. The reentry module was 11 feet (3.353 meters) long with a diameter of 7.5 feet (2.347 meters). The weight of the Gemini varied from ship to ship but was approximately 7,000 pounds (3,175 kilograms).
Artist’s concept of Gemini spacecraft, 3 January 1962. (NASA-S-65-893)
The Titan II GLV was a “man-rated” variant of the Martin SM-68B intercontinental ballistic missile. It was assembled at Martin’s Middle River, Maryland plant so as not to interfere with the production of the ICBM at Denver, Colorado. Twelve GLVs were ordered by the Air Force for the Gemini Program.
Titan II GLV, (NASA Mission Report, Figure 3-1, at Page 3–23)
The Titan II GLV was a two-stage, liquid-fueled rocket. The first stage was 70 feet, 2.31 inches (21.395 meters) long with a diameter of 10 feet (3.048 meters). It was powered by an Aerojet Engineering Corporation LR87-7 engine which combined two combustion chambers and exhaust nozzles with a single turbopump unit. The engine was fueled by Aerozine 50, a hypergolic 51/47/2 blend of hydrazine, unsymetrical-dimethyl hydrazine, and water. Ignition occurred spontaneously as the components were combined in the combustion chambers. The LR87-7 produced approximately 430,000 pounds of thrust (1,912.74 kilonewtons). It was not throttled and could not be shut down and restarted. Post flight analysis indicated that the first stage engine of GLV-8 had produced an average of 461,080 pounds of thrust (2,050.986 kilonewtons).
The second stage was 25 feet, 6.375 inches (7.782 meters) long, with the same diameter, and used an Aerojet LR91 engine which produced approximately 100,000 pounds of thrust (444.82 kilonewtons), also burning Aerozine 50. GLV-7’s LR91 produced an average of 102,735 pounds of thrust (456.988 kilonewtons).
The Gemini III/Titan II GLV combination had a total height of 107 feet, 7.33 inches (32.795 meters) and weighed 340,000 pounds (156,652 kilograms) at ignition.
The Gemini III spacecraft is displayed at the Grissom Memorial Museum, Spring Mill State Park, Mitchell, Indiana.
![A drawing showing the proposed route of one of the escape tunnels, by wartime artist Ley Kenyon, a prisoner-of-war in Stalag Luft III at the time of the Great Escape in March 1944 [Picture: from the original drawings of Ley Kenyon 1943] (GOV.UK)](https://static.thisdayinaviation.com/wp-content/uploads/tdia/2016/03/ODD_5948.jpg.webp)
