There's a TV show called Mail Call. It has a military type narrator. They were showing a helicopter picking up a piece of artillery. It hovers over the artillery while the ground crew attaches it. He said the first thing the crew has to do is ground the chopper to eliminate the static electricity buildup. The rotor blades can pickup 50,000 volts according to the story.
Static Electricity
Started by ●February 7, 2023
Reply by ●February 7, 20232023-02-07
On Tuesday, February 7, 2023 at 10:45:53 PM UTC+11, dean...@gmail.com wrote:> There's a TV show called Mail Call. It has a military type narrator. They were showing a helicopter picking up a piece of artillery. > It hovers over the artillery while the ground crew attaches it. He said the first thing the crew has to do is ground the chopper to eliminate the static electricity buildup. The rotor blades can pickup 50,000 volts according to the story.There are lots of ways of picking up a static charge. Car's famously do it, and people hang a carbon-loaded rubber strip on the back bumper to avoid getting a shock when they got out of a car. Check out a Wimshurst machine sometime. https://en.wikipedia.org/wiki/Wimshurst_machine -- Bill Sloman, Sydney
Reply by ●February 7, 20232023-02-07
On Tuesday, February 7, 2023 at 8:12:09 AM UTC-5, bill....@ieee.org wrote:> On Tuesday, February 7, 2023 at 10:45:53 PM UTC+11, dean...@gmail.com wrote: > > There's a TV show called Mail Call. It has a military type narrator. They were showing a helicopter picking up a piece of artillery. > > It hovers over the artillery while the ground crew attaches it. He said the first thing the crew has to do is ground the chopper to eliminate the static electricity buildup. The rotor blades can pickup 50,000 volts according to the story. > There are lots of ways of picking up a static charge. Car's famously do it, and people hang a carbon-loaded rubber strip on the back bumper to avoid getting a shock when they got out of a car.Interesting, but there are other ways. I once drove a compact that required the driver to rotate 90o in the synthetic fabric seat to even get your feet on the ground. You can pick up a lot of triboelectric charge doing that, drawing a 6 inch spark was the norm. To avoid it I would put my hand on the roof while I did the rotation, and voila, no discharge whatsoever.> > Check out a Wimshurst machine sometime. > > https://en.wikipedia.org/wiki/Wimshurst_machine > > -- > Bill Sloman, Sydney
Reply by ●February 7, 20232023-02-07
On Tuesday, February 7, 2023 at 6:45:53 AM UTC-5, dean...@gmail.com wrote:> There's a TV show called Mail Call. It has a military type narrator. They were showing a helicopter picking up a piece of artillery. > It hovers over the artillery while the ground crew attaches it. He said the first thing the crew has to do is ground the chopper to eliminate the static electricity buildup. The rotor blades can pickup 50,000 volts according to the story.That's what made the Hindenburg go up. The spark didn't ignite the hydrogen, it ignited the aluminum oxide cladding.
Reply by ●February 7, 20232023-02-07
On a sunny day (Tue, 7 Feb 2023 03:45:47 -0800 (PST)) it happened Dean Hoffman <deanh6929@gmail.com> wrote in <122b25aa-4db4-4851-8d89-f131c0745323n@googlegroups.com>:>There's a TV show called Mail Call. It has a military type narrator. They were showing a helicopter picking up a piece of >artillery. > It hovers over the artillery while the ground crew attaches it. He said the first thing the crew has to do is ground the > chopper to eliminate the static electricity buildup. The rotor blades can pickup 50,000 volts according to the story.Walking on my old shoes would make big sparks from my hand to the racks in the supermarket... I have never seen or felt sparks from my drone though...
Reply by ●February 7, 20232023-02-07
On 08/02/23 03:49, Fred Bloggs wrote:> That's what made the Hindenburg go up. The spark didn't ignite the hydrogen, it ignited the aluminum oxide cladding.I don't think aluminium oxide burns very well.
Reply by ●February 7, 20232023-02-07
On Tuesday, February 7, 2023 at 1:12:41 PM UTC-8, Clifford Heath wrote:> On 08/02/23 03:49, Fred Bloggs wrote: > > That's what made the Hindenburg go up. The spark didn't ignite the hydrogen, it ignited the aluminum oxide cladding. > I don't think aluminium oxide burns very well.It was aluminized pigment paint with iron-oxide (?primer)... thermite in combination. Instead of pale flame, it got really bright.
Reply by ●February 8, 20232023-02-08
On Tue, 7 Feb 2023 05:12:05 -0800 (PST), Anthony William Sloman <bill.sloman@ieee.org> wrote:>There are lots of ways of picking up a static charge. Car's famously do it, and people hang a carbon-loaded rubber strip on the back bumper to avoid getting a shock when they got out of a car.A long, long time ago, yes. These days, the tires have carbon or other conductive additives. -- RoRo
Reply by ●February 8, 20232023-02-08
On Tuesday, February 7, 2023 at 4:12:41 PM UTC-5, Clifford Heath wrote:> On 08/02/23 03:49, Fred Bloggs wrote: > > That's what made the Hindenburg go up. The spark didn't ignite the hydrogen, it ignited the aluminum oxide cladding. > I don't think aluminium oxide burns very well.You're right , I stand corrected. Apparently the debate about the cause is fluid and ongoing. It's looking more and more like the hydrogen spark was responsible. https://www.airships.net/hindenburg/disaster/myths/
Reply by ●February 8, 20232023-02-08
onsdag den 8. februar 2023 kl. 18.46.14 UTC+1 skrev Robert Roland:> On Tue, 7 Feb 2023 05:12:05 -0800 (PST), Anthony William Sloman > <bill....@ieee.org> wrote: > > >There are lots of ways of picking up a static charge. Car's famously do it, and people hang a carbon-loaded rubber strip on the back bumper to avoid getting a shock when they got out of a car. > A long, long time ago, yes. > > These days, the tires have carbon or other conductive additives.tires have had carbon black added for 100+ years ...
