• 9 Posts
  • 550 Comments
Joined 1 year ago
Cake day: June 30th, 2023
  • wallybeavis@lemmy.worldtoAsk Lemmy@lemmy.world•What electric toothbrushes do you guys use?English
    1·
    4 days ago

    Same here, I feel as though I see the Oral-B heads on sale at least once a month, but the Sonicare heads are almost never on sale. Years ago I noticed the Philips Sonicare site running sales around Black Friday, but there haven’t been any for the last couple of Black Fridays.

    Every now and again I’ll see discounted heads on Amazon, but I’ve also heard stories that there is a 50/50 chance of getting a knock-off that won’t work with handles - as Amazon combines all of their products for storage regardless of the seller

  • wallybeavis@lemmy.worldtoNonCredibleDefense@sh.itjust.works•they sure like to put big guns or smaller vehiclesEnglish
    2·
    4 days ago

    And here I thought the 70s were a wild time:

    Aerial Artillery Design Study - Two Externally-Mounted XM204 Howitzers on a CH-47C Helicopter

    Abstract:
    Design arrangement and mounting approaches, weight estimates, balance calculations, stress analyses, and helicopter performance predictions of an aerial artillery system utilizing two externally-mounted 105mm XM204 soft recoil howitzers on a CH-47C Chinook helicopter are presented. This design provides for all the firing modes and operational capabilities required by the Weapons Command, including the ability to offload one howitzer when the helicopter is hovering. The study includes an analysis of the structural integration of the weapons and aircraft including muzzle blast effects and airframe dynamic responses. A minimum adequate fire control system for air-to-ground firing and typical ground artillery fire control equipment was included.