This video details the pre-WWII 3.25-inch anti-aircraft rocket, specifically its PERF AR photo-electric proximity fuze. Developed by Division 4 of the NDRC, it used a shadow-detecting mechanism with a toroidal lens and photocell. The program was terminated in 1943 in favor of radio proximity fuzes, making this surviving example historically significant.
The PERF AR (Photo-Electric Rocket Fuze, American Rocket) was a pre-WWII proximity fuze for the 3.25-inch anti-aircraft rocket. It detected aircraft shadows using a toroidal lens and photocell, triggering a thyratron and electric detonator. The program ended in 1943, replaced by radio proximity fuzes.
This video from FAST HISTORY explores the remarkable life of George Sperti, a scientist and inventor whose contributions extended to a crucial World War II technological advancement: the proximity fuze. Despite the title's humorous juxtaposition with "Hemorrhoids," the core of the content focuses on Sperti's role in developing this innovative ordnance that significantly impacted naval warfare against Japanese forces, particularly during the conflict against Emperor Hirohito's empire. The video likely delves into the scientific challenges and the historical context of its development and deployment.
General Electric's VT Radio Proximity Fuze, produced using Christmas tree lamp bulb machines, was crucial in combating Kamikaze attacks during WW2. Over 30 million glass capsules were manufactured, each designed to shatter and activate a battery, triggering a radio wave detonation within 70 feet of a target. The engineering challenge involved creating glass durable enough for firing but fragile enough for activation.
This review covers the Finnish L-39 Lahti, a formidable 20mm anti-materiel rifle nicknamed 'Norsupyssy' or Elephant Gun. It highlights the rifle's massive scale, unique ski-style bipod, and the challenging process of loading its 10-round magazine with 20x138mmB Solothurn cartridges. The demonstration showcases the rifle's powerful live fire, emphasizing its significant muzzle blast and recoil.
This video showcases a 127-year-old U.S. Army 3.2-inch Model 1897 Field Gun, highlighting its historical significance and operational mechanics. Key details include its 1898 Watervliet Arsenal manufacture and a live-fire demonstration revealing its recoil and smoke characteristics. The content emphasizes the historical context and engineering of vintage artillery.
This video unboxes a sealed 'spam can' containing 25 inert 20mm M18A3 drill cartridges manufactured in March 1950. The presenter demonstrates opening the vintage container using its integrated key and inspects a cartridge, noting its headstamp. The can's interior includes a warning against food storage.
