Page 12 - Aerotech News and Review, Aug. 6, 2021

On this date ...
Aug. 7, 1963: The Lockheed YF-12A, designed by Clarence “Kelly” Johnson, made its first flight. It was developed as a possible replacement for the F-106 Delta Dart for the U.S. Air Force. The YF-12 was a twin-seat version of the then-secret single- seat Lockheed A-12 reconnaissance aircraft operated by the CIA. Unlike the A-12, it was furnished with the Hughes AN/ASG-18 fire-control radar and could be armed with AIM-47 Falcon (GAR-9) air-to-air missiles. The YF-12’s existence was revealed by President Lyndon B. Johnson on Feb. 24, 1964 to provide plausible deniability for the CIA-operated A-12 fleet, which closely resembled the prototype YF-12. The YF- 12A was announced in part to continue hiding the A-12, its still-secret ancestor; any sightings of CIA/Air Force A-12s based at Area 51 in Nevada could be attributed to the well-publicized Air Force YF-12As based at Edwards Air Force Base, Calif. The first public showing of the aircraft was on Sept. 30, 1964, at Edwards. On May 14, 1965, the Air Force placed a production order for 93 F-12Bs for its Air Defense Command. However, Secretary of Defense Robert McNamara would not release the funding for three consecutive years due to Vietnam War costs. Updated intelligence placed a lower priority on defense of the continental US, so the F-12B was deemed no longer needed. Then in January 1968, the F-12B program was officially ended. Following its retirement by the Air Force, it served as a research aircraft for NASA for a time, which used it to develop several significant improvements in control for future supersonic aircraft.
Aug. 8, 1955: The X-1A was lost after an explosion took place while still mated to its mother ship at an altitude of 30,000 feet, just 70 seconds before launch. NACA pilot Joe Walker escaped unharmed from the cockpit, whereupon the research plane was jettisoned over the bombing range.
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Aerotech News and Review
August 6, 2021
Aug. 9, 1976: The Boeing YC-14 — a twinjet short take-off and landing tactical military transport aircraft — made its first flight. It was Boeing entry into the U.S. Air Force’s Advanced Medium STOL Transport completion, which aimed to replace the Lockheed C-130 Hercules. The YC-14 was competing against the McDonnell Douglas YC-15. Head to head testing began at Edwards Air Force Base in November 1976. Testing ended in later summer, 1977. Two YC-14s were built and, after completion of testing, both were returned to Boeing.
Aug. 12, 1977: With Gordon Fullerton and Fred Haise at the controls, Rockwell’s OV-101 Space Shuttle Enterprise was released from a specially- configured Boeing 747 Space Shuttle Carrier Aircraft and made its first unpowered free flight to the Rogers Dry Lake bed. The Enterprise was a prototype, non-orbiting model of the spacecraft, built for Approach and Landing Tests.
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