onetrack Posted April 21, 2020 Posted April 21, 2020 (edited) There are many upsides to the virus restrictions; 1. The road toll is down in most states. 2. Crime levels are down, by up to 30% in some areas. 3. Drug dealing has been curtailed severely by the movement restrictions and constant police roadblocks. A mate "in the know" says the junkies are doing it tough, the price of meth has apparently doubled. 4. Traffic congestion has gone back 20 years. I love it! 5. There are little food vans and coffee vans everywhere, as people in the restaurant/cafe business turn to alternative styles of income. 6. I don't miss the fairly constant commercial aircraft noise, and the skies seem to be clearer, as regards air pollution. 7. The parcel and freight people are grinning from ear to ear, business has never been so good. Edited April 21, 2020 by Guest 1
spacesailor Posted April 22, 2020 Posted April 22, 2020 About that Clean Air, Is it the road vehicles, OR Those jumbo jets that spew so much smoke on takeoff. That fuel used on a jumbo takeoff, will power many cars, for One year, so I,ve been told !. spacesailor 1
onetrack Posted April 22, 2020 Posted April 22, 2020 (edited) Global Jet fuel consumption is around 8% of the worlds fossil fuel production. But even as air traffic movement has dropped to less than a third of what it was previously, there has also been a large decline in petrol and diesel use, as people are not moving around on the roads, like they used to. https://www.aa.com.tr/en/economy/world-jet-fuel-demand-could-drop-by-70-due-to-covid-19/1778544 Edited April 22, 2020 by Guest
spacesailor Posted April 22, 2020 Posted April 22, 2020 I was told many years ago, a jumbe uses 20 to 30 TONS of fuel on takeoff . Not counted is that fuel used when cruising. One litre per kilo, is that 30,000 litres, ?. spacesailor
old man emu Posted April 22, 2020 Posted April 22, 2020 One litre per kilo, is that 30,000 litres, ?. That's a bit of an over-estimate, but on the safe side. One litre of water weighs one kilogram at Standard Temperature and Pressure. Avtur is less dense than water, about 800 grams per litre. 30, 000 x 0.8 = 24,000 kilograms.
spacesailor Posted April 22, 2020 Posted April 22, 2020 (edited) A good tanker full, then. For Each plane . spacesailor Edited April 22, 2020 by spacesailor
old man emu Posted April 30, 2020 Posted April 30, 2020 Because of social distancing, they can't shoot any more episodes of Home and Away. 2
facthunter Posted April 30, 2020 Posted April 30, 2020 I don't see modern jets spewing smoke. The early 707's etc certainly did but they were primitive designs compared to the later high bypass ratio and high TGT engines. At low levels jet engines use a lot of fuel.. That's why they don't hold or hang around at low levels. The descent is planned to be done at flight idle which is about the lowest fuel flow rate at which the engine is stable.. Nev
spacesailor Posted April 30, 2020 Posted April 30, 2020 Even to day watching jumbo.s taking off it always,s shows a dark haze behind them. spacesailor
octave Posted April 30, 2020 Posted April 30, 2020 Why Were Old Jet Engines So Much More Smoky Than Newer Ones?
facthunter Posted April 30, 2020 Posted April 30, 2020 Some of the colour may be Nitrous oxides as the high temp burning promotes that. Lightning also makes nitrous oxides. Nev
Yenn Posted May 1, 2020 Posted May 1, 2020 That dark haze behind a big plane taking off is just the air being compressed as it supports 300 tonnes of aeroplane. Denser air equals harder to see through.
old man emu Posted May 1, 2020 Posted May 1, 2020 just the air being compressed as it supports 300 tonnes of aeroplane. But Bernoulli says that the air moving over a wing is at a lower pressure, so it can't be denser.
willedoo Posted May 5, 2020 Posted May 5, 2020 (edited) One personal upside of the enforced stay at home routine is learning new ways to do business online. An evolution from dinosaur to modern human is taking place. Have registered for internet banking which is great; I can check account balances and transfer between accounts without driving 20klms to the bank. Likewise the car parts; paid online and delivered cheaper than if I drove in to get them myself. And then there's the vehicle registration. This is the first email renewal I've ever received. It came in a PDF format, so the dinosaur plan was to hook up the printer, print it out and then drive into town and pay it. First snag was that the PDF pages wouldn't fit on an A4 sheet; the bottom section was cut off with - you guessed it, the bar code for payment. After trying all sorts of printer and PDF settings and going through a ton of paper and ink, I gave up. The next genius brainwave was to ring the Transport Department, and after 20 minutes on hold only to finally get cut off, that plan was going nowhere. The final and successful brainwave was to see if I could pay it online. First off, did the internet banking to juggle money between accounts, then went to the department website. Entered the details, whipped out the credit card and bingo.... all done. Turns out the printer wasn't needed after all. And all this from the comfort of an office chair in front of the home computer. Moral of the story is that these newly learnt methods will be ongoing after Covid-19 is dead and forgotten. Saves time, money, fuel, pollution etc., and much less tearing out of hair. Hello 21st. Century. Edited May 5, 2020 by Guest
Marty_d Posted May 5, 2020 Author Posted May 5, 2020 Because of social distancing, they can't shoot any more episodes of Home and Away. Maybe they could rename it to simply Home. 1 1
Yenn Posted May 11, 2020 Posted May 11, 2020 One of the upsides of the lock down has already disappeared. For about a month I picked up very little rubbish on my morning walks. Today I got half a Coles shopping bag full. Nearly back to normal.
facthunter Posted May 11, 2020 Posted May 11, 2020 Covid9 will Most likely never be dead. Neither is immunity guaranteed and you'll never get 100% vaccination. We eliminated TB and smallpox and laxity has caused resurgence of more virulent forms of TB and measles kills. Flu comes around in a new form each year. HIV and STD's are increasing in some areas. China just lost all the Pigs with swine flu not 12 months ago. Do we never learn? These things don't have legs and crawl over the ground like cane toads do. They travel on and in people and people's interaction spreads them usually via Jet transport, where you're crammed in like cattle for hours and all use the same dunnies and handles and cough all over each other, and when you get to your cruise ship, you can finish the job and take your time. Nev 1
Marty_d Posted May 11, 2020 Author Posted May 11, 2020 I reckon people are going to be a lot more aware of hand hygiene, personal space and cough/sneeze etiquette from now on.
old man emu Posted May 11, 2020 Posted May 11, 2020 I mightn't have C-19, but I've got dishpan hands.
red750 Posted May 12, 2020 Posted May 12, 2020 These conspiracy theorists (and anti-vaxxers) absolutely take the cake. Some of the theories doing the rounds: There is no virus - it's a plot and a con by Bill Gates and the like to cash in. The statistics are all fabricated. Next breath - the virus is spread by 5G. The lockdown is so that the Gov't can install 5G towers everywhere. Can these people (?) even tie their shoe laces? 2 1 1
Old Koreelah Posted May 12, 2020 Posted May 12, 2020 Trouble is, they're allowed to vote. In America they're allowed to own assault rifles, and do. 1
old man emu Posted May 12, 2020 Posted May 12, 2020 Can these people (?) even tie their shoe laces? Nope. They wear sandals because they have no laces, and caftans because they have no buttons. 1
willedoo Posted May 13, 2020 Posted May 13, 2020 (edited) One thing I find quite pleasant about the Covid restrictions - no chuggers outside the local Coles supermarket. Edited May 13, 2020 by Guest 1
Marty_d Posted May 13, 2020 Author Posted May 13, 2020 One thing I find quite pleasant about the Covid restrictions - no chuggers outside the local Coles supermarket. What are "chuggers"? We have "chiggers" down here (people who live in the suburb of Chigwell) but never heard of chuggers.
willedoo Posted May 13, 2020 Posted May 13, 2020 (edited) Chuggers are charity muggers, the people employed by commission agents of charities to harass everyone going into the supermarket. Where I live, they are usually outside Coles which explains why more people shop at Woolies. Edited May 13, 2020 by Guest 2
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