Tag Archives: Northrop Corporation

21 October 1947

October 21, 2023Aviation42-102367, Allison J35-A-15, Allison J35-A-5, Bomber, First Flight, Flying Wing, Jack Northrop, John Knudsen Northrop, Max R. Stanley, Max Stanley, Northrop Corporation, Northrop Field, Northrop YB-35 Flying Wing, Northrop YB-49 Flying Wing, Pratt & Whitney Wasp Major R-4360-21Bryan Swopes

Northrop YB-49 42-102367 takes off from Northrop Field, Hawthorne, California. (U.S. Air Force)

21 October 1947: At Northrop Field, Hawthorne, California, Northrop Corporation Chief Test Pilot Max R. Stanley took off in the first YB-49, 42-102367, and flew it to Muroc Air Force Base for flight testing.

42-102367 had been converted from the second YB-35 pre-production test aircraft. The original Flying Wing’s four Pratt & Whitney Wasp Major (R-4360-21) radial engines were replaced by turbojet engines and several aerodynamic improvements were made.

Chief Test Pilot Max R. Stanley. (Photograph courtesy of Neil Corbett, Test and Research Pilots, Flight Test Engineers)

The YB-49 was a very unusual configuration for an aircraft of that time. There was no fuselage or tail control surfaces. The crew compartment, engines, fuel, landing gear and armament were contained within the wing. Air intakes for the turbojet engines were placed in the leading edge and the exhaust nozzles were at the trailing edge. Four small vertical fins for improved yaw stability were also at the trailing edge.

Northrop YB-49 42-102367. (U.S. Air Force) — Northrop YB-49 42-102367 at Northrop Field, Hawthorne, California. (Unattributed)

The YB-49 had a length of 53 feet, 1 inch (16.180 meters), wingspan of 172 feet (52.426 meters) and overall height of 15 feet, 2 inches (4.623 meters). It weighed 88,442 pounds (40,117 kilograms) empty and its Maximum Takeoff Weight (MTOW) was 193,938 pounds (87,969 kilograms).

The Wing defined the airplane. The leading edge was swept aft 26° 57′ 48″, and the trailing edge, 10° 15′ 22″. The wing’s total area was 4,000 square feet (371.6 square meters). It had an aspect ratio of 7.4:1. At the root, the chord was 37 feet, 6 inches (11.430 meters), tapering to 9 feet, 4 inches (2.844 meters) at the tip. There was 0° angle of incidence at the root, -4° at the wing tips, and 0° 53′ dihedral.

Northrop YB-49 42-102367 in flight near Muroc Air Force Base. (U.S. Air Force)

The YB-49 was powered by eight General Electric-designed, Allison Engine Company-built J35-A-5 engines. (This same engine variant was used in the North American Aviation XP-86, replacing its original Chevrolet-built J35-C-3.) The engines were later upgraded to J35-A-15s. The J35 was a single-spool, axial-flow turbojet engine with an 11-stage compressor and single-stage turbine. The J35-A-15 had a Normal Power rating of 3,270 pounds of thrust (14.546 kilonewtons) at 7,400 r.p.m. The Military Power rating was 3,750 pounds (16.681 kilonewtons) at 7,700 r.p.m. The engine was 14 feet, 0.0 inches (4.267 meters) long, 3 feet, 4.0 inches (1.016 meters) in diameter and weighed 2,400 pounds (1,089 kilograms).

The YB-49 had four vertical fins extending above and below the trailing edge of the Wing. (U.S. Air Force 090706-F-1234K-048)

During testing the YB-49 reached a maximum speed of 428 knots (493 miles per hour/793 kilometers per hour) at 20,800 feet (6,340 meters). Cruise speed was 365 knots (429 miles per hour/690 kilometers per hour). The airplane had a service ceiling of 49,700 feet (15,149 meters). The YB-49 had a maximum fuel capacity of 14,542 gallons (55,047 liters) of JP-1 jet fuel. Its combat radius was 1,403 nautical miles (1,615 statute miles/2,598 kilometers).

The maximum bomb load of the YB-49 was 16,000 pounds (7,257 kilograms), though the actual number of bombs was limited by the volume of the bomb bay and the capacity of each bomb type. While the YB-35 Flying Wing was planned for multiple machine gun turrets, the YB-49 carried no defensive armament.

Northrop YB-49 42-102367 takes off from Northrop Field, Hawthorne California. Note teh crowds of onlookers and residential housing along W. 120th Street, on the north side of the airport. (U.S. Air Force) — Northrop YB-49 42-102367 takes off from Northrop Field, Hawthorne, California. Note the crowds of onlookers and residential housing along W. 120th Street, on the north side of the airport. (Unattributed)

Only two Northrop YB-49s were built and they were tested by Northrop and the Air Force for nearly two years. Though an additional nine YB-35s were ordered converted, the B-49 was not placed into production.

The second ship, YB-49 42-102368, disintegrated in flight during a test flight north of Muroc Air Force Base, 5 June 1948, killing the entire crew, which included Captain Glen Edwards. The name of Muroc was changed to Edwards Air Force Base in his honor.

YB-49 42-102367 was destroyed by fire following a taxiing accident at Edwards, 15 March 1950. The program was cancelled on the same day.

12 October 1961

October 12, 2023Aviation60-0551, Edwards Air Force Base, FAI, Fédération Aéronautique Internationale, Jackie Cochran, Jacqueline Cochran, Northrop Corporation, Northrop T-38A Talon, T-38A-30-NO, Test Pilot, World Record for Altitude, World Record for Altitude in Horizontal FlightBryan Swopes

Jackie Cochran with her record-setting Northrop T-38A-30-NO Talon, 60-0551, at Edwards Air Force Base, 1961. (U.S. Air Force)

12 October 1961: From August to October 1961, Jackie Cochran, a consultant to Northrop Corporation, set a series of speed, distance and altitude records while flying a Northrop T-38A-30-NO Talon supersonic trainer, serial number 60-0551. On the final day of the record series, she set two Fédération Aéronautique Internationale (FAI) world records, taking the T-38 to altitudes of 16,841 meters (55,253 feet) in horizontal flight ¹ and reaching a peak altitude of 17,091 meters (56,073 feet). ²

Jacqueline Cochran’s Diplôme de Record in the San Diego Air and Space Museum Archives. (Bryan R. Swopes)

Northrop T-38A-30-NO Talon at Edwards Air Force Base, California. (U.S. Air Force) — Northrop T-38A-30-NO Talon 60-0551 at Edwards Air Force Base, California. (U.S. Air Force)

Famed U.S. Air Force test pilot Chuck Yeager, a close friend of Jackie Cochran, kept notes during the record series:

October 12 Jackie took off at 9 am in the T-38 using afterburner. Bud Anderson and I chased her in the F-100. It was an excellent flight with everything working perfect. Jackie entered the course at 55,800 feet at .93 Mach and accelerated to radar. At the end of the run Jackie pulled up to 56,800 and then pushed over. She cut the right afterburner at 52,000 feet and the left one at 50,000. At 12,000 feet she removed the face piece from her pressure suit and made a perfect landing on the lake bed.

Northrop-Air (Norair) presented Miss Cochran with one dozen yellow roses.

A very tender ending to a wonderful program and a fitting token to a wonderful lady—a pilot who gave Norair much more than they expected.

— Brigadier General Charles Elwood (“Chuck”) Yeager, U.S. Air Force, quoted in Jackie Cochran: An Autobiography, by Jacqueline Cochran and Maryann Bucknum Brinley, Bantam Books, New York, 1987, Pages 307–308.

Jackie Cochran and Chuck Yeager at Edwards Air Force Base, California, after a flight in the record-setting Northrop T-38A Talon. (U.S. Air Force)

The T-38A is a two-seat, twin-engine jet trainer capable of supersonic speed. It is powered by two General Electric J85-5A turbojet engines producing 2,050 pounds of thrust (3,850 with afterburner). Jackie Cochran demonstrated its maximum speed, Mach 1.3. It has a service ceiling of 50,000 feet (15,240 meters) and a range of 1,140 miles (1,835 kilometers). In production from 1961 to 1972, Northrop has produced nearly 1,200 T-38s. It remains in service with the U.S. Air Force, U.S. Navy, and the National Aeronautics and Space Administration.

Jackie Cochran’s record-setting T-38 is in the collection of the Smithsonian Institution, National Air and Space Museum.

Jackie Cochran’s record-setting Northrop T-38A-30-NO Talon, 60-0551, on display at the Smithsonian Institution, Steven F. Udvar-Hazy Center. The Talon is in the markings of the Sacramento Air Logistics Center, McClellan Air Force Base, Sacramento, California. (NASM)

¹ FAI Record File Number 12884

² FAI Record File Number 12855

6 October 1961

October 6, 2023Aviation60-0551, Edwards Air Force Base, FAI, Fédération Aéronautique Internationale, General Electric J85-GE-5A, Jackie Cochran, Jacqueline Cochran, Northrop Corporation, Northrop T-38A Talon, T-38A-30-NO, Test Pilot, Trainer, World Record for Speed Over a Closed Circuit of 100 KilometersBryan Swopes

6 October 1961: During a two-month series of speed, distance and altitude record attempts at Edwards Air Force Base, California, Jackie Cochran set a Fédération Aéronautique Internationale (FAI) World Record for Speed Over a Closed Circuit of 100 Kilometers Without Payload, flying a Northrop T-38A-30-NO Talon, 60-0551. Her average speed over the 62-mile circular course was 1,262.188 kilometers per hour (784.287 miles per hour).¹

Jackie’s friend, famed Air Force test pilot Colonel Chuck Yeager, kept notes during the series of record attempts:

September 29: Edwards AFB. Flew the aircraft today to include a practice run on the 100 kilometer course. Jackie did a fine job at 1.2 Mach. Looks like this will be a piece of cake. Aircraft was okay. Average speed 742 miles per hour. Jackie was in the altitude chamber today with the pressure suit (CSU 4/P). Everything went fine and maximum altitude was 65,000 feet. This is the first time a woman was taken up in the chamber in a pressure suit. CSU 4/P was the type of suit.

October 3: Tried a run today but weather moved in from 26,000 to 37,000 feet. Very good landing. Airspeed system iced up and Jackie stalled the aircraft at 35,000 feet. Made a no-sweat recovery.

October 4: Ran the 100 kilometer for record at 1 pm. The first run wasn’t too good but had an average speed of 763 mph. A pylon was cut so the run was voided. Second run was 740 mph. Very poor. Another flight was made at 5:30 pm but both runs were pretty sorry. Jackie was a little late on all of the corrections. Jackie doesn’t seem to be in too good a physical or mental state.

October 5: I flew in the backseat of the T-38 with Jackie on a practice run of the 100 kilometer. I talked her around the course 2 times with a little help on the stick. First run was 782 mph and second run was 787. I think I know what has been Jackie’s trouble on the 100 km. During the flight as she starts gaining a little altitude, she lets off on the back pressure on the stick to stop climbing and this causes the turn to become larger. Jackie and I spent two hours talking this over. She finally understands that in order to fly a constant circle, if the airplane starts to climb, she must increase the bank angle and let off on the back pressure a little and let the nose drop but still hold the same rate of turn. This is what makes the 100 km so hard to fly. Jackie still has a touch of the flu.

October 6: Jackie felt better today and after a delay caused by communication trouble, she flew one of the most perfect runs that has ever been flown on the 100 km course. She learned her lesson well. The record speed was 784 mph. She held 1/4 mile outside the course the entire trip. I was very pleased to watch the reaction of the timers and radar people. I think they expected another 10 or 15 trips like the F-105 tricks. She made one hell of a good flight.

— Brigadier General Charles E. Yeager, U.S. Air Force, quoted in Jackie Cochran: An Autobiography, by Jacqueline Cochran and Maryann Bucknum Brinley, Bantam Books, New York, 1987, Pages 306–307.

The Northrop T-38A Talon is a two-place, twin-engine jet trainer capable of supersonic speed. It is 46 feet, 4 inches (14.122 meters) long with a wingspan of 25 feet, 3 inches (7.696 meters) and overall height of 12 feet, 10 inches (3.912 meters). The trainer’s empty weight is 7,200 pounds (3,266 kilograms) and the maximum takeoff weight is 12,093 pounds (5,485 kilograms).

The T-38A is powered by two General Electric J85-GE-5 turbojet engines. The J85 is a single-shaft axial-flow turbojet engine with an 8-stage compressor section and 2-stage turbine. The J85-GE-5 is rated at 2,680 pounds of thrust (11.921 kilonewtons), and 3,850 pounds (17.126 kilonewtons) with afterburner. It is 108.1 inches (2.746 meters) long, 22.0 inches (0.559 meters) in diameter and weighs 584 pounds (265 kilograms).

It has a maximum speed of Mach 1.08 (822 miles per hour, 1,323 kilometers per hour) at Sea Level. The Talon’s service ceiling of 55,000 feet (16,764 meters) and it has a maximum range of 1,093 miles (1,759 kilometers).

In production from 1961 to 1972, Northrop has produced nearly 1,200 T-38s. As of January 2014, the U.S. Air Force had 546 T-38A Talons in the active inventory. It also remains in service with the U.S. Navy, and the National Aeronautics and Space Administration.

Jackie Cochran’s record-setting T-38 is in the collection of the Smithsonian Institution, National Air and Space Museum.

Northrop T-38A Talon 60-0551, now twenty-one years old, sits on the ramp at the Sacramento Air Logistics Center, McClellan Air Force Base, Sacramento, California, 1981. (Photograph by Gary Chambers, used with permission)

¹ FAI Record File Number 13036

18 September 1961

September 18, 2023Aviation60-0551, Aviatrix, Charles E. Yeager, Charles Elwood Yeager, Chuck Yeager, Edwards Air Force Base, FAI, Fédération Aéronautique Internationale, Jackie Cochran, Jacqueline Cochran, Minneapolis, Northrop Corporation, Northrop T-38A, T-38A-30-NO, Talon, Test Pilot, Trainer, Women in Aviation, World Record for DistanceBryan Swopes

18 September 1961: Jackie Cochran, acting as a test pilot and consultant for Northrop Corporation, set a Fédération Aéronautique Internationale (FAI) World Record for Distance when she flew the Northrop T-38A-30-NO Talon, 60-0551, from Palmdale, California, to Minneapolis, Minnesota, a distance of 2,401.780 kilometers (1,492.397 miles).¹

Jacqueline Cochran's Diplôme de Record in teh San Diego Air and Space Museum Archives. (Bryan R. Swopes) — Jacqueline Cochran’s Diplôme de Record in the San Diego Air and Space Museum Archives. (Bryan R. Swopes)

Jackie’s friend, famed Air Force test pilot Colonel Chuck Yeager, kept notes during the series of record attempts:

September 18: Jackie took off from Palmdale at 10:00 am for attempt to set records from points to points. I took off from Edwards with 275-gallon [1,041 liter] drop tanks. During climb Jackie reported rough engine and poor performance. Also the fuel flow was inoperative. Jackie returned to the field where I finally found her takeoff flaps were still down. Also her navigation lights and beacon were on. I was rather disappointed. She’s a little cocky in the airplane. She landed back there at Palmdale with 1500 pounds [680 kilograms] of fuel in each side and made a good heavy-weight landing. The aircraft refueled and another takeoff was made at 12:30 pm. Everything went smooth this flight. We ran into clouds at the edge of Utah which lasted until Cheyenne, Wyo. Clear the rest of the way. Jackie landed with 250 pounds of fuel in each side. Made a beautiful landing and turned off after a 4000 foot [1,220 meters] ground roll. Bob White returned the F-100 to Edwards.

Jackie Cochran’s record-setting T-38 is in the collection of the Smithsonian Institution, National Air and Space Museum.

¹ FAI Record File Number 12383

15 September 1961

September 15, 2023Aviation60-0551, Edwards Air Force Base, Fédération Aéronautique Internationale, General Electric J85-GE-5, Jackie Cochran, Jacqueline Cochran, Northrop Corporation, Northrop T-38A Talon, T-38A-30-NO, World Record for Distance Over a Closed CourseBryan Swopes

Jackie Cochran with her record-setting Northrop T-38A-25-NO Talon, 60-0551, at Edwards AFB, 1961. (U.S. Air force) — Jackie Cochran with her record-setting Northrop T-38A-30-NO Talon, 60-0551, at Edwards Air Force Base, California, 1961. (U.S. Air Force)

15 September 1961: As a consultant to Northrop Corporation, Jackie Cochran flew a T-38A-30-NO Talon to set a Fédération Aéronautique Internationale (FAI) World Record for Distance Over a Closed Course of 2,166.77 kilometers (1,346.37 miles).¹ During August and September 1961, she set series of speed, altitude and distance records with the T-38.

Famed Air Force test pilot Colonel Charles E. (“Chuck”) Yeager kept notes during these record runs:

September 13: Jackie landed at 4:15 am. We flew the T-38 on the closed course distance. Takeoff at 2:15 pm and climbed to 40,500 feet [12,344 meters] for initial cruise. Fuel checked out very good. I was amazed at the way Jackie handled the aircraft at high altitude. Everything looked good on the entire flight. Landed a little short of oil in the left engine. Weather was bad over Kingman, Arizona. Cruise climbed at 96% rpm and .87 IMN to 46,500 [14,173 meters] at the end of run. We were in the air 2 ½ hours.

September 14: We tried cold fuel today. It gave us an additional 170 pounds [77 kilograms] at the end. Was a very good flight. We talked with the NAA [National Aeronautic Association] about tomorrow’s run.

September 15: Flew closed course distance for record today and had a good run. Jackie did an excellent job even with bad weather. I chased her in an F-100 all the way.

Jackie Cochran’s record-setting T-38 is in the collection of the Smithsonian Institution, National Air and Space Museum.

Northrop T-38A Talon 60-0551, now twenty years old, sits on the ramp at teh Sacramento Air Logistics Center, McClellan Air Force Base, Sacramento, California, 1981. (Photograph by Gary Chambers, used with permission) — Northrop T-38A-30-NO Talon 60-0551, now twenty-one years old, sits on the ramp at the Sacramento Air Logistics Center, McClellan Air Force Base, Sacramento, California, 15 May 1982. Jackie Cochran set nine world speed, distance and altitude records while flying this airplane. (© Gary Chambers, used with permission)

¹ FAI Record File Number 12384

This Day in Aviation

Important Dates in Aviation History

Tag Archives: Northrop Corporation

21 October 1947

12 October 1961

6 October 1961

18 September 1961

15 September 1961