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GAM-72/ADM-20 Quail Missle History/Data

ADM-20 Quail Missle Quail
McDonnell GAM-72/ADM-20 Quail Missle Quail


The Quail was a bomber-launched decoy missile of the USAF, designed to appear on the enemy's radar screens as additional bombers, and thus confuse and degrade the air-defense system.

In 1955, the USAF started a major development effort for decoy missiles, which were intended to give almost identical radar images as real strategic bombers, and therefore confuse and saturate the enemy air defenses. The projects included the GAM-71 Buck Duck (a rocket-powered air-launched vehicle to be carried by the B-36 Peacemaker), the SM-73 Bull Goose (a ground-launched long-range jet-powered decoy), and the GAM-72 Green Quail. The latter was to become a turbojet-powered air-launched decoy for internal carriage by B-52 Strato Fortress bombers. In February 1956, McDonnell was selected as prime contractor for the GAM-72, whose name had been shortened to Quail by that time (the names of the other two decoy projects are also often quoted without the "first name"). Captive tests with B-52s began in July 1957, and the first free glide flight of an XGAM-72 prototype occurred in November 1957. The first successful powered flight in August 1958 was followed by the initial production contract for the GAM-72 Quail in December 1958. In September 1960, the USAF received its first production Quails, and in February 1961, the first B-52 squadron with Quail decoys was operational.

SAC received its first GAM-72 in on 13 September 1960, when the first production-line Quail missiles were delivered to the 4135th Strategic Wing, a B-52G unit at Eglin Air Force Base, Florida. Headquarters SAC declared one Quail-equipped squadron of the 4135th Strategic Wing operational on 1 February 1961, and eleven B-52 squadrons were fully equipped and operational by 31 December 1961. The fourteenth and final Quail-equipped B-52 squadron became operational on 15 April 1962. The McDonnell Aircraft Corporation delivered the last Quail missile to the Strategic Air Command on 28 May 1962. SAC had 492 Quails at its peak inventory in 1963. In all, McDonnell produced 616 of the missiles.

The GAM-72 was powered by General Electric J85-GE-3 turbojet engines. Its slab-sided fuselage and twin dorsal and ventral fins produced a large radar cross section similar to that of a B-52. The wings and fins of the Quail could be folded, reducing the overall dimensions to 3.94 m x 0.74 m x 0.66 m (155 in x 29 in x 26 in). This allowed the carriage of up to eight decoys in the B-52s, weapons bays, although the operationally used quantity was four decoys per aircraft. The Quails were located in the extreme rear of the B-52s bay, and could be lowered out of the bay before launch for wing unfolding and engine start. The Quail could be preprogrammed on the ground to perform two turns and one speed change during its flight to a range of up to 825 km (445 nm). Additionally, it carried an ECM package including of a radar repeater, and later versions also had chaff dispensers and a heat source (to simulate the B-52s IR signature).

The J85-GE-3 engines of the original GAM-72 suffered from serious reliability problems, and the engine was therefore modified into the J85-GE-7 version. Quails equipped with the new engine were designated GAM-72A. The GAM-72A was also about 90 kg (200 lb) heavier than the GAM-72, and had a slightly smaller wing area, reducing the maximum range to about 650 km (350 nm). The first GAM-72A flew in March 1960, and almost all of the 550+ production Quails (except for the first 24 missiles only) were built as GAM-72As. During 1963, all available GAM-72As were modified for low-level operations by the addition of a barometric switch for terrain avoidance. In this configuration the Quail was redesignated as GAM-72B.

In June 1963, all Quail missiles were redesignated in the ADM-20 Quail Missle series as follows:

Old Designation New Designation
GAM-72 - ADM-20 Quail MissleA
GAM-72A - ADM-20 Quail MissleB
GAM-72B - ADM-20 Quail MissleC

The ADM-20 Quail Missle was a relatively effective decoy against 1960s technology radars. However, in a USAF test in 1972, the Air Force radar operators were able to correctly identify the decoys in 21 out of 23 cases. The Quail remained operational until 1978. Although Strategic Air Command continued to support Quail as an effective and inexpensive penetration aid, the Air Force elected to phase out the missile because the lack of spare parts and adequate test equipment had made the system difficult to maintain. The last Quail missile came off alert on 30 June 1978 and the Quail was eliminated from SAC's missile inventory by mid-December.

Note: Data given by several sources show slight variations. Figures given below may therefore be inaccurate!

Data for ADM-20 Quail MissleB/C (except where noted):

Length 3.94 m (12 ft 11 in)
Wingspan 1.65 m (5 ft 5 in)
Height 1.02 cm (3 ft 4 in)
Weight 540 kg (1200 lb); ADM-20 Quail MissleA: 450 kg (1000 lb)
Speed Mach 0.95
Ceiling 15200 m (50000 ft)
Range 650 km (350 nm); ADM-20 Quail MissleA: 825 km (445 nm)
Propulsion General Electric J85-GE-7 turbojet; 10.9 kN (2450 lb) each
ADM-20 Quail MissleA: General Electric J85-GE-3 turbojet; 10.9 kN (2450 lb) each

Missile Tail Numbers and Launch Information


59-2232 thru 59-2255
60-0616 thru 60-0851
61-0333 thru 61-0633

Total = 561


Quail Missile Launches Thru 1960

The following Quail Launches took place at the WSMR:
(Note: These were test launches prior to the Quail becoming Operational)

1957 - 3
1958 - 10
1959 - 17
1960 - 4


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