jeffquitney
patreon
MGR-1B (M50) 762mm Rocket 1965 US Army; from Weapons of the Field Artillery, Training Film TF6-3646
🕑 Added 2019-12-10 21:42:12 +0000 UTCmore at http://quickfound.net/
Originally a public domain film from the National Archives, slightly cropped to remove uneven edges, with the aspect ratio corrected, and one-pass brightness-contrast-color correction & mild video noise reduction applied.
The soundtrack was also processed with volume normalization, noise reduction, clipping reduction, and/or equalization (the resulting sound, though not perfect, is far less noisy than the original).
https://en.wikipedia.org/wiki/MGR-1_Honest_John
Wikipedia license: http://creativecommons.org/licenses/by-sa/3.0/
The MGR-1 Honest John rocket was the first nuclear-capable surface-to-surface rocket in the United States arsenal. Originally designated Artillery Rocket XM31, the first unit was tested on 29 June 1951, with the first production rounds delivered in January 1953. Its designation was changed to M31 in September 1953. The first Army units received their rockets by year's end and Honest John battalions were deployed in Europe in early 1954. Alternatively, the rocket was capable of carrying an ordinary high-explosive warhead weighing 1,500 pounds (680 kg)...
Developed at Redstone Arsenal, Alabama, the Honest John was a large but simple fin-stabilized, unguided artillery rocket weighing 5,820 pounds (2,640 kg) in its initial M31 nuclear-armed version. Mounted on the back of a truck, the rocket was aimed in much the same way as a cannon and then fired up an elevated ramp, igniting four small spin rockets as it cleared the end of the ramp. The M31 had a range of 15.4 miles (24.8 km) with a 20 kiloton nuclear warhead and was also capable of carrying a 1,500-pound (680 kg) conventional warhead.
The M31 system included a truck-mounted, unguided, solid-fueled rocket transported in three separate parts. The Honest John was assembled in the field before launch, mounted on an M289 launcher, and aimed and fired in about 5 minutes. The rocket was originally outfitted with a W7 nuclear warhead, with a variable yield of up to 20 kilotons of TNT (84 TJ); in 1959, a W31 warhead with three variants was deployed with yields of 2, 10 or 30 kt (8.4, 41.8 or 125.5 TJ). There was a W31 variant of 20 kt (84 TJ) used exclusively for the Nike Hercules anti-aircraft system. The M31 had a range between 3.4 and 15.4 mi (5.5 and 24.8 km).
Early tests exhibited more scatter on target than was acceptable when carrying conventional payloads. Development of an upgraded Honest John, M50, was undertaken to improve accuracy and extend range. The size of the fins was greatly reduced to eliminate weathercocking. Increased spin was applied to restore the positive stability margin that was lost when fin size was reduced. The improved M50, with the smaller fins and more "rifling", had a maximum range of 30+ miles with a scatter on target of only 250 yards (230 m), demonstrating an accuracy approaching that of tube artillery. The Honest John was manufactured by the Douglas Aircraft Company of Santa Monica, California...
Production of the MGR-1 variants finished in 1965, with a total production run of more than 7,000 rockets. The Honest John's bulbous nose and distinctive truck-mounted launch ramp made it an easily recognized symbol of the Cold War at army bases worldwide and National Guard armories in the U.S.. Even though it was unguided and the first U.S. nuclear ballistic missile, it had a longer service life than all other U.S. ballistic missiles except the Minuteman system. The system was replaced with the MGM-52 Lance missile in 1973, but was deployed with the National Guard units in the United States as late as 1983. Conventionally armed Honest Johns remained in the arsenals of Greece, Turkey and South Korea until at least the late 1990s.
By the time the last Honest Johns were withdrawn from Europe in the late 1980s (and replaced by the unguided M-26 artillery rocket), the rocket had served with the military forces of Belgium, Britain, Canada, Denmark (non-nuclear), France, Germany, Greece, Italy, the Netherlands, Norway (non-nuclear), South Korea, Taiwan (non-nuclear), and Turkey...
