- ADM-20 Quail
September 13, 1960
engine=General Electric J85-GE-7 turbojet; 2,450 lbf (10.9 kN) thrust.
weight=1,198 lb (543 kg)
length=12 ft 9 in (3.88 m)
height=2 ft 1 in (0.66 m) (wings folded); 3 ft 3 in (1.02 m) (wings unfolded).
wingspan=2 ft 4 in (0.71 m) (wings folded); 5 ft 4 in (1.65 m) (wings unfolded).
vehicle_range=445 miles (716 km)
ceiling=50,000 ft (15,200 m)
altitude=50,000 ft (15,200 m).
Autopilotintegrated with a Rate integrating gyroscopepre-programmed to turn the ADM-20.
B-52 Stratofortress.The McDonnell ADM-20 Quail was a subsonic, jet powered, air-launched decoy cruise missilebuilt by McDonnell AircraftCorporation. The Quail was designed to be launched by the Boeing B-52 Stratofortressstrategic bomber and its original Air Force designation was GAM-72 (GAM standing for Guided Aircraft Missile) [ [http://pdsimg.jpl.nasa.gov/AdminDev/internal/helpfiles/acronyms/g.html NASA list of Space Related Acronyms] ] .
In 1955 the USAF started a major effort to construct decoy
missiles. The goal of this effort was to improve the ability of strategic bombers to penetrate air-defense systems. The projects initiated under this effort included the MX-2223 which produced the XSM-73 Goosea long range ground-launched jet powered, decoy cruise missile, MX-2224 which produced the XGAM-71 Buck Duckan air-launched rocketpowered decoy missile to equip the Convair B-36.
The USAF was at the same time developing the XQ-4 as a
supersonictarget droneto support the Bomarc Missile Program. A requirement was established by the USAF Power Plant Laboratory at Wright-Patterson Air Force Baseto support follow-on production of the XQ-4. This requirement called for a small jet engine in the 2,000 lbf (8.9 kN) thrustclass with a high thrust-to-weight ratioof (10:1). On November 28, 1954General Electric was awarded a USAF development contractto construct the XJ-85-GE-1. The USAF designated the XJ85 project MX-2273.
During April 1955, the USAF began a program to develop a short range air-launched decoy missile to simulate the
radar cross section. In January 18, 1956, the USAF released General Operational Requirement (GOR) 139.
McDonnell Aircraft Corporation submitted a design which included a cropped-delta-wing decoy constructed largely of
fiberglassand carried internally within a B-52. The following month on February 1, 1956, the McDonnell Aircraft Corporation was awarded a contractto develop Weapon System 122A which included the GAM-72 "Green Quail" missile. In June 1956 General Electricwas selected as the engine contractor for the GAM-72. Guidance components were built by Summers Gyroscope and the countermeasures equipment by Ramo-Wooldridge Corporation.
The GAM-72 was designed with a high-mounted
delta wingand no horizontal stabilizer. A slab-sided fuselageand two sets of vertical stabilizers contributed to the GAM-72s ability to simulate the radar cross sectionof a bomber. Initially the GAM-72 was powered by a YJ85-GE-3. This jet engine produced 2,450 lbf (10.9 kN) of thrustwith a thrust-to-weight ratiogoal of (6:1).
The GAM-72s guidance system could be pre-programmed on the ground to execute two turns and one speed change during a flight time of 45 to 55 minutes. Flight duration depended on
altitude. The GAM-72 was designed to operate at altitudes between 35,000 ft (10,668 m) to 50,000 ft (15,240 m) at speeds between Mach 0.75 to Mach 0.9. Range varied between 357 nm and 445 nm (661 to 716 km), also depending on altitude.
Two GAM-72s with folded wings and stabilizers were packaged together for mounting in the bomber weapons bay. Before launch the bomber's
radar navigatorlowered the GAM-72 using a retractable arm from the airplane's weapons bay into the slipstreambelow the aircraft. The wings and stabilizers of the GAM-72 were unfolded, the jet engine was started, and the missile was launched.
Flight testing of the XGAM-72 began in July 1957 at
Holloman Air Force Baseand the adjacent White Sands Missile Range. Initially testing involved the XGAM-72 being captively carried by a B-52. The first glide flight of the XGAM-72 occurred in November 1957. Three test launches were completed in 1957. The first successful powered flight of the XGAM-72 occurred in August 1958. This flight lasted 14 minutes and covered 103 nautical miles (191 km). A total of ten test flights occurred in 1958, seventeen flights in 1959, with the final four flights being completed in 1960. Operational testing then moved to Eglin Air Force Base, Florida, United Stateswhere the 4135th Strategic Wing launched a GAM-72 on June 8, 1960.
McDonnell Aircraft received a production contract for the GAM-72A on
December 31, 1958. Reliability problems encountered during testing resulted in McDonnell replacing the J85-GE-3 with the J85-GE-7 engine in the production GAM-72A. The GAM-72A was also about 200 lb (90 kg) heavier than the GAM-72. This increase in weight when combined with a slightly smaller wing area reduced the maximum range of the GAM-72A to 402 statute miles (647 km). The first production GAM-72A flight was in March 1960. The final GAM-72A was delivered by McDonnell Aircraft on May 28, 1962. A total of 616 GAM-72A missiles were produced by McDonnell Aircraft. The inventory of GAM-72As in the USAF peaked at 492 in 1963.
During 1963 all remaining GAM-72A missiles were modified to the GAM-72B configuration. A
barometricswitch for terrain avoidance was added so the GAM-72B could operate at lower altitudes.
In 1963 the GAM-72 was re-designated the ADM-20
Although originally planned for deployment with the B-47 and the B-52, the GAM-72A was only deployed with the B-52.
The first production GAM-72A was delivered to the 4135th Strategic Wing, at
Eglin Air Force Base, Floridaon September 13, 1960. Initial operational capability was reached on February 1, 1961when the first squadron of the 4135th Strategic Wing was equipped with the GAM-72A. On January 1, 1962B-52 aircraft carried the GAM-72A decoy on airborne alert for the first time. Full operational capability was reached when the GAM-72A was deployed with the fourteenth and final B-52 squadronon April 15, 1962.
The operational version of the GAM-72 carried internal radar reflectors facing forward and to each side of the aircraft. Up to 100 lb (45 kg) of payload could be accommodated internally by the GAM-72. This internal space could be used to house a radar
repeateror a chaff dispenser. An infrared burner in the tail could produce intense heat to simulate the heat signature of a bomber. The GAM-72 was not armed.
Eight GAM-72A decoys could be accommodated in the B-52s weapons bay but the normal decoy load was two.
Ground radar continued to improve, and the GAM-72B now "ADM-20C"s effectiveness decreased over time. The AGM-69 Short Range Attack Missile(SRAM) allowed bombers to attack air-defense systems from a distance. By 1971, the USAF no longer considered the ADM-20C a credible decoy. The commander of the
Strategic Air Commandwrote the Chief of Staff of the United States Air Force"that the Quail was only slightly better than nothing." The last ADM-20C operational test was flown at Eglin Air Force Base on July 13, 1972. On June 30, 1978, the last ADM-20C came off alert status. The last ADM-20C was removed from the United States Air Force inventory on December 15, 1978.
*GAM-72 - 24 test
*GAM-72A - 592
*GAM-72B - Upgrade to remaining GAM-72A
*ADM-20A - GAM-72 re-designated in June 1963
*ADM-20B - GAM-72A re-designated in June 1963
*ADM-20C - GAM-72B re-designated in June 1963
United States Air Force
The number of GAM-72As in service, by year:
*ADM-20C S/N 69-700 located in the
National Museum of the United States Air Force, Wright-Patterson Air Force Base, Dayton, Ohio, United States.
*ADM-20 S/N 61-347 located in the
Eighth Air Force Museum, Barksdale Air Force Base, Bossier City, Louisiana, United States.
*ADM-20 S/N 60-593 located in the Eighth Air Force Museum, Barksdale Air Force Base.
*ADM-20 located in the
Aerospace Museum of California, Sacramento, California, United States.
*ADM-20 S/N 59-2249 located in the
Air Force Space and Missile Museum, Cape Canaveral Air Force Station, Florida, United States.
*ADM-20 S/N 60-505 located in the
South Dakota Air and Space Museum, Ellsworth Air Force Base, Rapid City, South Dakota, United States.
*ADM-20 S/N 59-2245 located in the
Armed Forces and Aerospace Museum, Spokane, Washington, United States.
*ADM-20C S/N 61-633 located in the
Hill Aerospace Museum, Ogden, Utah, United States.
*ADM-20C located in the
Historic Aviation Memorial Museum, Tyler, Texas, United States.
*ADM-20C S/N 61-414 located in Gwinn,
Michigan, United States.
*ADM-20C located in the
Pima Air & Space Museum, Tucson, Arizona, United States.
*ADM-20C S/N 60-374 located in the
Western Aerospace Museum, Oakland, California, United States.
*ADM-20C S/N 60-755 located in the
Southern Museum of Flight, Birmingham, Alabama, United States.
*ADM-20C S/N 61-455 located in the
Lone Star Flight Museum, Galveston, Texas, United States.
*ADM-20 S/N 64-2573 located in the
Museum of Aviation, Robins Air Force Base, Warner Robins, Georgia, United States.
* "McDonnell ADM-20 Quail", Fact Sheet from the National Museum of the USAF, [http://www.nationalmuseum.af.mil/factsheets/factsheet.asp?id=384]
* "McDonald ADM-20 Quail Missile", Strategic-Air-Command.com Website, retrieved October 1, 2007, [http://www.strategic-air-command.com/missiles/Aircraft-Launched_Missiles/adm-20_quail_missile.htm]
* "McDonnell GAM-72/ADM-20 Quail Missile Data", AMMS ALUMNI Website, retrieved October 2, 2007, [http://www.ammsalumni.org/html/adm-20_history_data.html]
* "AMMS History", AMMS ALUMNI Website, retrieved October 6, 2007, [http://www.ammsalumni.org/html/amms_history.html]
* "McDonnell ADM-20C-40-MC "Quail" Aerial Decoy", Historic Aviation Memorial Museum Website, retrieved October 3, 2007, [http://www.tylerhamm.com/exhibit-quail.htm]
* "QUAIL" AERIEL DECOY", Hill Air Force Base Website, retrieved October 6, 2007, [http://www.hill.af.mil/library/factsheets/factsheet.asp?id=5768]
* " [6.0] Decoys", Greg Goebel / In The Public Domain Website, retrieved October 6, 2007, [http://www.vectorsite.net/twuav_06.html]
* "Evolution of the Cruise Missile", Kenneth P. Warrell, Air University Press USAF, 1985.
* "ADM-20 Quail", Web Page by the Federation of American Scientists, retrieved October 6, 2007, [http://www.fas.org/nuke/guide/usa/bomber/adm-20.htm]
* "Quail", Historical Essay by Andreas Parsch, Encyclopedia Astronautica website, retrieved October 6, 2007, [http://www.astronautix.com/lvs/quail.htm]
* "Pre-1963 Designations Of U.S. Missiles And Drones", Designations Systems Website, retrieved October 6, 2007, [http://www.designation-systems.net/usmilav/old-missiles.html]
* "The History of North American Small Gas Turbine Aircraft Engines", William Fleming and Richard Leyes, AIAA, 1999
* XSM-74 Buck Duck
* ADM-141C ITALD
* "Current" sequence:
PGM-17 Thor- MGM-18 Lacrosse- PGM-19 Jupiter - ADM-20 Quail - MGM-21 (SS.10) - AGM-22 (SS.11) - MIM-23 Hawk
* "B-" sequence: B-69 (P-2 Neptune) - B-70 Valkyrie - B-71 Blackbird - B-72 Quail - B-73 Goose - B-74 Buck Duck - B-75 Thor
* "M-" sequence: IM-69 BOMARC - IM-70 Talos - GAM-71 Buck Duck - GAM-72 Quail -
XSM-73 Goose- XSM-74- SM-75 Thor
List of military aircraft of the United States
List of missiles
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