Lockheed YF-12

ICAO aircraft code YF12
Country United States
New price USD 18 million (1963)

The Lockheed YF-12 is an American prototype interceptor aircraft developed and manufactured by American aerospace company Lockheed Corporation.
It was developed during the late 1950s and early 1960s as a potential replacement for the F-106 Delta Dart interceptor for the United States Air Force (USAF).

Specifications

Full description

Similar aircraft

Lockheed YF-12 specifications

General

ICAO aircraft code
YF12
Manufacturer
Lockheed Martin Aeronautics
Manufactured
1963 - 1968
Country
United States
New purchase price
USD 18 million (1963)

Aircraft performance

Avionics:
Hughes AN/ASG-18
Engine:
2x Pratt & Whitney J58 (JTD11D-20A)
Jet
Power:
31,500 pound-force
Max Cruise Speed:
1977 Kts
3,661 Km/h
Travel range:
2,600 Nm
4,815 Kilometers
Service Ceiling:
90,000 feet
Rate of Climb:
11820 feet / minute
60.05meter / second

Weight & dimensions

Max Take Off Weight:
63,504 Kg
140,001 lbs
Max Payload:
1,100 Kg
2,425 lbs

Disclaimer: The information on this page may not be accurate or current. Never use it for flight planning or any other aircraft operation purposes. No warranty of fitness for any purpose is made or implied. Flight planning or any other aircraft operations should only be done using official technical information provided by the manufacture or official aviation authorities.

About the Lockheed YF-12

The Lockheed YF-12 is an American prototype interceptor aircraft developed and manufactured by American aerospace company Lockheed Corporation.

It was developed during the late 1950s and early 1960s as a potential replacement for the F-106 Delta Dart interceptor for the United States Air Force (USAF). The YF-12 was a twin-seat version of the then-secret single-seat Lockheed A-12 reconnaissance aircraft operated by the Central Intelligence Agency (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. Performing its maiden flight on 7 August 1963, the YF-12’s existence was revealed by President Lyndon B. Johnson on 24 February 1964; this move was to provide plausible deniability for the CIA-operated A-12 fleet, which closely resembled the prototype YF-12.

During the 1960s, the YF-12 underwent flight evaluations by the USAF, but funding to put it into operational use was not forthcoming partly due to the pressing demands of the Vietnam War and other military priorities. It set and held speed and altitude world records of over 2,000 miles per hour (3,200km/h) and over 80,000 feet (24,000m) (later surpassed by the closely-related SR-71 Blackbird), and is the world’s largest, heaviest and fastest crewed interceptor. Following its retirement by the USAF, 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.

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