Tony Levier and Glenn Fulkerson in the prototype Lockheed YF-94. (Lockheed Martin)
16 April 1949: At Van Nuys Airport, California, test pilot Tony LeVier and flight test engineer Glenn Fulkerson made the first flight of the Lockheed YF-94 prototype, serial number 48-356. The aircraft was the first jet-powered all-weather interceptor in service with the United States Air Force and was the first production aircraft powered by an afterburning engine.
Prototype Lockheed YF-94 48-356, first flight, 16 April 1949. (U.S. Air Force)
Two prototypes were built at Lockheed Plant B-9, located on the east side of Van Nuys Airport. Two TF-80C-1-LO (later redesignated T-33A) Shooting Star two-place trainers, 48-356 and 48-373, were modified with the installation of air intercept radar, an electronic fire control system, radar gun sight, four Browning AN-M3 .50-caliber (12.7 × 99 NATO) aircraft machine guns and a more powerful Allison J33-A-33 turbojet engine with water-alcohol injection and afterburner. The rear cockpit was equipped as a radar intercept officer’s station.
The prototype Lockheed YF-94 test fires its four .50-caliber guns at Van Nuys, California. (Lockheed Martin)
It was initially thought that the project would be a very simple, straightforward modification. However, the increased weight of guns and electronics required the installation of a more powerful engine than used in the T-33A. The new engine required that the aft fuselage be lengthened and deepened. Still, early models used approximately 80% of the parts for the F-80C fighter and T-33A trainer. The Air Force ordered the aircraft as the F-94A. Improvements resulted in an F-94B version, but the definitive model was the all-rocket-armed F-94C Starfire.
The prototype Lockheed YF-94, 48-356. (U.S. Air Force)
The Allison J33-A-33 was a single-shaft turbojet engine with a single-stage centrifugal-flow compressor, 14 combustion chambers and, a single-stage axial flow turbine. The engine was rated at 4,600 pounds of thrust (20.46 kilonewtons) and 6,000 pounds (26.69 kilonewtons) with afterburner. The J33-A-33 was 17 feet, 11.0 inches (5.461 meters) long, 4 feet, 1.3 inches (1.252 meters) in diameter and weighed 2,390 pounds (1,084 kilograms).
Originally a P-80C Shooting Star single-place fighter, 48-356 had been modified at Lockheed Plant B-9 in Van Nuys to become the prototype TF-80C two-place jet trainer (the designation was soon changed to T-33A), which first flew 22 March 1948. It was then modified as the prototype YF-94. 48-356 was later modified as the prototype F-94B. It is in the collection of the Air Force Flight Test Museum, Edwards Air Force Base, and is in storage awaiting restoration.
Probably the best-known Lockheed F-94 variant is the all-rocket-armed F-94C Starfire. (Lockheed Martin)
A Douglas C-54 Skymaster on final approach to Flughafen Berlin-Tempelhof.
16 April 1949: During the Berlin Airlift, airplanes delivered a record 12,941 tons (11,740 metric tons) of coal—equivalent to 600 rail carloads—to the blockaded city during a 24-hour period. This required 1,383 flights.
Harriet Quimby, September 1910. (Edmunds Bond/The Boston Globe)
16 April 1912: American aviatrix Harriet Quimby flew across the English Channel in a Blériot XI monoplane. She departed Dover at 5:30 a.m. and crossed a fog-shrouded channel to land at Hardelot-Plage, Pas-de-Calais, 1 hour, 9 minutes later. Her only instruments were a hand-held compass and a watch.
FLIGHT reported:
MISS QUIMBY FLIES THE CHANNEL.
ALTHOUGH Miss Harriet Quimby has made an enviable reputation for herself as a capable pilot in America, her native country, she has not been very well-known on this side of the Atlantic, and no doubt few of our readers who read the announcement in FLIGHT a week or so back that she was coming to Europe, looked for her so soon to make her mark by crossing the Channel. Contrary to what one would expect, the feat was carried through without any fuss or elaborate preparations, and only a few friends, including Mr. Norbet Chereau and his wife and Mrs Griffith, an American friend, knew the attempt was being made and were present at the start. Miss Quimby had ordered a 50-h.p. Gnome-Blériot, which arrived from France on Saturday, and was tested on Sunday by Mr. Hamel. On Tuesday morning, as previously arranged, after Mr. Hamel had taken the machine for a preliminary trial flight, Miss Quimby, who had been staying at Dover under the name of Miss Craig, took her place in the pilot’s seat, and at 5.38 left Deal, rising by a wide circle and steering a course, by the aid of the compass, for Cape Grisnez. Dover Castle was passed at a height of 1,500 feet, and by the time the machine was over the sea, it was at an altitude of about 2,000 feet. Guided solely by compass, Miss Quimby arrived above the Grisnez Lighthouse a little under an hour later, and making her way towards Boulogne she came down at Equihen by a spiral vol plané not far from the Blériot sheds.
To Miss Quimby, therefore belongs the honour of being the first of the fair sex to make the journey, unaccompanied, across the Channel on an aeroplane; and, appropriately enough, as the first crossing of an aeroplane by a “mere man” was on a Blériot machine, her mount was of that type. Miss Trehawke Davies, it will be remembered, was the first lady to cross the Channel in an aeroplane, but she was a passenger with Mr. Hamel on his Blériot monoplane.
—FLIGHT, No. 173. (No. 16, Vol. IV.), 20 April 1912 at Page 345
Quimby was the first woman to fly across the channel, but that was not her only “first”: On 11 August 1911, after 33 flight lessons over a four-month period at the Moisant Aviation School at Hempstead, Long Island, New York, she had become the first American woman to receive a pilot’s license, Number 37, from the Aero Club of America. She was called as “America’s First Lady of the Air.” Miss Quimby was widely known for her “plum-colored” satin flying suit.
Miss Harriet Qumby, 1911, (Leslie Jones Collection, Boston Public Library)
Harriet Quimby was born 11 May 1875 at Arcadia, Michigan. She was the fourth child of William F. Quimby, a farmer, and Ursula M. Cook Quimby. The family moved to California in 1887, initially settling in Arroyo Grande, and then San Francisco. There, she worked as an actress, and then a writer for the San Francisco Call newspaper, and Leslie’s Illustrated Weekly. Quimby also wrote a number of screenplays for early Hollywood movies which were directed by D.W. Griffiths.
Harriet Quimby was killed at Quincy, Massachusetts, 1 July 1912, when her Blériot XI, circling the airfield at 1,500 feet (457 meters) suddenly pitched down and she and her passenger were thrown out. Miss Quimby was buried at the Kensico Cemetery, Valhalla, New York.
Miss Harriet Quimby with her Blériot monoplane.
The Blériot XI was a single-seat, single-engine monoplane, designed by Raymond Saulnier and built by Louis Charles Joseph Blériot. It was 26.24 feet (7.998 meters) long with a wingspan of 25.35 feet (7.727 meters) and overall height of 8 feet (2.438 meters). The wings had a chord of 6 feet (1.829 meters). The airplane had an empty weight of 507 pounds (229.9 kilograms).
In its original configuration, the airplane was powered by an air-cooled, 3.774 liter (230.273 cubic inches) R.E.P. two-row, seven-cylinder fan engine (or “semi-radial”) which produced 30 horsepower at 1,500 r.p.m., driving a four-bladed paddle-type propeller. The R.E.P. engine weighed 54 kilograms (119 pounds). This engine was unreliable and was soon replaced by an air-cooled 3.534 liter (215.676 cubic inch) Alessandro Anzani & Co., 60° (some sources state 55°) three-cylinder “fan”-type radial engine (or W-3) and a highly-efficient Hélice Intégrale Chauvière two-bladed fixed-pitch propeller, which had a diameter of 6 feet, 8 inches (2.032 meters). The Anzani W-3 was a direct-drive, right-hand tractor engine which produced 25 horsepower at 1,400 r.p.m. It was 1.130 meters (3 feet 8.49 inches) long, 1.500 meters (4 feet, 11.01 inches) high, and 0.720 meters (2 feet, 4.35 inches) wide. The engine weighed 66 kilograms (145.5 pounds).
Blériot Type XI, front view.Blériot Type XI, side view.Blériot Type XI, top view.
Miss Quimby’s airplane, though, was powered by a normally-aspirated, air-cooled, 7.983 liter (487.140-cubic-inch-displacement) Société des Moteurs Gnome Omega 7-cylinder rotary engine which produced 50 horsepower at 1,200 r.p.m. The direct-drive engine turned a two-bladed wooden propeller in a left-hand, tractor configuration. The Omega 7 is 79.2 centimeters (2 feet, 7.2 inches) long, 83.8 centimeters (2 feet, 9.0 inches) in diameter, and weighs 75.6 kilograms (166.7 pounds). The prototype of this engine is in the collection of the Smithsonian Institution National Air & Space Museum.
The Anzani-powered Blériot XI had a maximum speed of 76 kilometers per hour (47 miles per hour) and its service ceiling was 1,000 meters (3,281 feet).
Harriet Quimby, wearing her purple satin flying suit, pulls the Chauvière Intégrale propeller of the Blériot XI to start the air-cooled Anzani W3 (“fan” or “semi-radial”) three-cylinder engine.
Impact crater of the Apollo 13/Saturn V AS-508 S-IVB third stage, photographed by the Lunar Reconnaissance Orbiter. The crater is approximately 30 meters (98 feet) across. (NASA)
15 April 1970, 01:09:40 UTC: T plus 077:56:40.0: The Apollo 13 Saturn S-IVB-508 third stage impacted the surface of The Moon north of Mare Cognitum. (S. 2° 33′ 00″, W. 27° 52′ 48″). The S-IVB hit the lunar surface at a velocity of 2.58 kilometers per second (5,771 miles per hour). The impact energy was 4.63 x 1017 ergs (1.04 kiloton).
The impact was detected by seismometers placed on the Moon by Apollo 12 astronauts Pete Conrad and Alan Bean. This was part of the Apollo Lunar Surface Experiments Package, or ALSEP.
Seismograph tracings of Apollo 13 S-IVB impact. (NASA)
The Apollo 12 seismometer was located 135 kilometers (83.9 miles) from the Apollo 13 third stage impact. The signals were used to calibrate the instrument package, which was in service from 1969 to 1977.
The Saturn V third stage was designated Saturn S-IVB. It was built by Douglas Aircraft Company at Huntington Beach, California. The S-IVB was 58 feet, 7 inches (17.86 meters) tall with a diameter of 21 feet, 8 inches (6.604 meters). It had a dry weight of 23,000 pounds (10,000 kilograms) and fully fueled weighed 262,000 pounds (118,841 kilograms). The third stage had one Rocketdyne J-2 engine which used liquid hydrogen and liquid oxygen for propellant. Itproduced 232,250 pounds of thrust (1,033.10 kilonewtons). The S-IVB would place the Command and Service Module into Low Earth Orbit, then, when all was ready, the J-2 would be restarted for the Trans Lunar Injection.
A Sikorsky HH-3E Jolly Green Giant (66-13290) ot the 37th ARRS, hovering in ground effect at Da Nang, 1968. (U.S. Air Force)
15 April 1970:
AIR FORCE CROSS
CAPTAIN TRAVIS HENRY SCOTT, JR.
Captain Travis H. Scott, Jr., United States Air Force
The President of the United States of America, authorized by Section 8742, Title 10, United States Code, awards the Air Force Cross to Captain Travis H. Scott, Jr., for extraordinary heroism in military operations against an opposing armed force as Aircraft Commander of an HH-3E helicopter near Dak Nay Puey, Republic of Vietnam, on 15 April 1970. On that date, Captain Scott was engaged in the rescue of a crew of a United States Army helicopter which was shot down by enemy ground fire. With display of great skill and professional airmanship, Captain Scott made two earlier attempts to position his helicopter, but each time he was driven off by heavy ground fire, which inflicted damage to his helicopter. After assessing the damage to his helicopter, and assuring that his crew was able to continue with the mission, Captain Scott requested and received permission to make a third rescue attempt. In this attempts, the helicopter was severely damaged by an intense burst of heavy automatic weapons fire. Captain Scott heroically struggled to keep his crippled helicopter airborne and, with sheer determination and a deep concern for his fellowmen, he crash landed his helicopter in order to save the lives of his crew and passengers. Through his extraordinary heroism, superb airmanship and aggressiveness in the face of an opposing armed force, and in the dedication of his service to his country, Captain Scott reflected the highest credit upon himself and the United States Air Force.
Captain Travis Henry Scott, Jr., was also posthumously awarded the Purple Heart and the Air Medal (his fifth award) for this action. He had previously been awarded the Silver Star, the Distinguished Flying Cross with two oak leaf clusters (three awards).
AIR FORCE CROSS
MAJOR TRAVIS WOFFORD
Lieutenant Colonel Travis Wofford, United States Air Force.
The President of the United States of America, authorized by Title 10, Section 8742, United States Code, takes pleasure in presenting the Air Force Cross to Major Travis Wofford (AFSN: 0-61477), United States Air Force, for extraordinary heroism in military operations against an opposing armed force as Co-Pilot of an HH-53 ¹ Rescue Helicopter Pilot of the 37th Aerospace Rescue and Recovery Squadron, 3d Air Rescue and Recovery Group, DaNang Air Base, Vietnam, in action near Dak Nay Puey, Republic of Vietnam, on 15 April 1970. On that date, Major Wofford was engaged in the rescue of a crew of a United States Army helicopter which was shot down by enemy ground fire. Although Major Wofford was wounded by enemy ground fire during two earlier rescue attempts, he chose to continue with the rescue operations. On the third attempt, the helicopter was severely damaged by an intense burst of heavy automatic weapons fire. When the helicopter lost power and crashed, Major Wofford, with complete disregard for his personal safety and despite his painful injuries, freed himself from the wreckage and then attempted to free the pilot, who was instantly killed on impact. He then observed the other members of the crew engulfed in flames and, with sheer determination and a deep concern for his fellow men, he rushed to their aid, extinguished the flames and then dragged the aircrew members to a place of safety from which they were rescued. Through his extraordinary heroism, superb airmanship, and aggressiveness in the face of hostile forces, Major Wofford reflected the highest credit upon himself and the United States Air Force.
Major Wofford was also awarded the Purple Heart. He was awarded the Distinguished Flying Cross for a rescue carried out the previous day. He also received the Cheney Award for 1970. His other medals include the Silver Star, Meritorious Service Medal with two oak leaf clusters (three awards), the Air Medal with one silver and one bronze oak leaf clusters (six awards), the Air Force Commendation Medal, Presidential Unit Citation with oak leaf cluster (two awards), and the Gallant Unit Citation with two oak leaf clusters (three awards).
Air Force CrossCheney Award (U.S. Air Force)
¹ The above citation incorrectly references Major Wofford’s aircraft as an HH-53. It was a Sikorsky HH-3E Jolly Green Giant, call sign “Jolly Green 27.” This helicopter, 66-13280, was one of two HH-3Es to fly non-stop from New York to Paris, 31 May 1967.
