Things you always wanted to know the answer to [Vol. 4]
Discussion
wiggy001 said:
Wings on planes... is there an advantage to those where the wingtips curl up at the end? If so, why don't they all have that feature? And if not, why do some have it?
(Yes I am bored... albeit with a pint... at Belfast International...)
The advantage is that you can generate extra lift, and avoid some serious vortex issues. (Yes I am bored... albeit with a pint... at Belfast International...)
They don't all need it as they are stable enough without it. And, some have it go up because if they went out any further they would have too wide a wingspan for certain airports/parking stands. They have to fit within a certain space which defines what size category they are, and going up a size would have serious ramifications
StevieBee said:
Inspired by Trigger's Broom story (had the same broom for 15 years...just four new handles and five new heads)......
How much of a car has to be replaced before it's deemed a new car?
I'm assuming that the chassis number must be the same so if I had an old car and replaced everything within 20mm of the chassis number plate and or the etched number, would the DVLA still consider it to be the same car?
There's a points based system for how many original components it has from chasis/axles/engine/gearbox/etc. If you're under a certain score it's supposed to go on to a Q plate. This is how some kit cars are able to keep the donor cars registration plate. How much of a car has to be replaced before it's deemed a new car?
I'm assuming that the chassis number must be the same so if I had an old car and replaced everything within 20mm of the chassis number plate and or the etched number, would the DVLA still consider it to be the same car?
RizzoTheRat said:
There's a points based system for how many original components it has from chasis/axles/engine/gearbox/etc. If you're under a certain score it's supposed to go on to a Q plate. This is how some kit cars are able to keep the donor cars registration plate.
Indeed. There is a points-based system and also beyond a certain point the car could be required to undergo an SVA. I remember a Scrapheap Challenge special years ago where teams of past champions had to create a highly modified vehicle capable of being driven on public roads between challenges, and they had all sorts of issues with how much they could modify, and SVA etc.
One team completely circumvented the regulations by starting with an Agricultural Vehicle and apparently any old deathtrap is allowed on the roads if it is an Agricultural Vehicle. That gave them somewhat of an advantage over their competitors.
SpeckledJim said:
I think they increase the proportion of the 'flat' area of the wing that creates lift.
Without them, a surprisingly large length of the end of the wing is either useless, or actually detrimental to overall lift (I forget which).
Without them, a surprisingly large length of the end of the wing is either useless, or actually detrimental to overall lift (I forget which).
Shakermaker said:
wiggy001 said:
Wings on planes... is there an advantage to those where the wingtips curl up at the end? If so, why don't they all have that feature? And if not, why do some have it?
(Yes I am bored... albeit with a pint... at Belfast International...)
The advantage is that you can generate extra lift, and avoid some serious vortex issues. (Yes I am bored... albeit with a pint... at Belfast International...)
They don't all need it as they are stable enough without it. And, some have it go up because if they went out any further they would have too wide a wingspan for certain airports/parking stands. They have to fit within a certain space which defines what size category they are, and going up a size would have serious ramifications
Yes I'm reading Adrian Neweys book at the moment
Shakermaker said:
wiggy001 said:
Wings on planes... is there an advantage to those where the wingtips curl up at the end? If so, why don't they all have that feature? And if not, why do some have it?
(Yes I am bored... albeit with a pint... at Belfast International...)
The advantage is that you can generate extra lift, and avoid some serious vortex issues. (Yes I am bored... albeit with a pint... at Belfast International...)
They don't all need it as they are stable enough without it. And, some have it go up because if they went out any further they would have too wide a wingspan for certain airports/parking stands. They have to fit within a certain space which defines what size category they are, and going up a size would have serious ramifications
No doubt their effects were discovered by NASA or similar but they were popularised on large commercial aircraft by these guys who were eventually bought out by Boeing:
https://en.wikipedia.org/wiki/Aviation_Partners_In...
Aircraft that don't have them can be because the fuel benefit is marginal at their operating range or they may be older versions of non-Boeing aircraft that were subject to the APB patent or don't have wing strength to take them. When Airbus resolved the patent issue and started to fit them to new A320 family aircraft, some existing aircraft that had already been delivered had wing strengthening that meant they could be retrofitted whilst the earlier ones couldn't. The earlier A320's had units known as wingtip fences (also found on other Airbus types such as the A380) rather than sharklets or winglets:
The first 21 built didn't have anything:
[url]Current "sharklet":
alorotom said:
Are the royal family Londoners?? They have residences but are they Londoners??
I'd say so, not originally from London of course, but most of us are immigrants in some sense if we go back enough. Plus, with a husband like Phil, the Queen has had to have visited the Oxo Tower on several occasions.
NoVetec said:
alorotom said:
Are the royal family Londoners?? They have residences but are they Londoners??
I'd say so, not originally from London of course, but most of us are immigrants in some sense if we go back enough. Plus, with a husband like Phil, the Queen has had to have visited the Oxo Tower on several occasions.
Sandringham (Norfolk) and Balmoral (Scotlandshire) are the Queen's own gaffs.
RizzoTheRat said:
StevieBee said:
Inspired by Trigger's Broom story (had the same broom for 15 years...just four new handles and five new heads)......
How much of a car has to be replaced before it's deemed a new car?
I'm assuming that the chassis number must be the same so if I had an old car and replaced everything within 20mm of the chassis number plate and or the etched number, would the DVLA still consider it to be the same car?
There's a points based system for how many original components it has from chasis/axles/engine/gearbox/etc. If you're under a certain score it's supposed to go on to a Q plate. This is how some kit cars are able to keep the donor cars registration plate. How much of a car has to be replaced before it's deemed a new car?
I'm assuming that the chassis number must be the same so if I had an old car and replaced everything within 20mm of the chassis number plate and or the etched number, would the DVLA still consider it to be the same car?
Clockwork Cupcake said:
alorotom said:
Are the royal family Londoners?? They have residences but are they Londoners??
They're German aren't they? Probably due to Victoria’s marriage to Prince Albert, her son Edward V11 was of the House of Saxe-Coburg-Gotha, and his son, George V was too, but during WW1, due to anti German sentiment, George V changed the name of his house to Windsor.
It remains Windsor up until today, so in essence, Elizabeth11 is English, but she is descended from Germans, in fact Hanoverians.
droopsnoot said:
RizzoTheRat said:
StevieBee said:
Inspired by Trigger's Broom story (had the same broom for 15 years...just four new handles and five new heads)......
How much of a car has to be replaced before it's deemed a new car?
I'm assuming that the chassis number must be the same so if I had an old car and replaced everything within 20mm of the chassis number plate and or the etched number, would the DVLA still consider it to be the same car?
There's a points based system for how many original components it has from chasis/axles/engine/gearbox/etc. If you're under a certain score it's supposed to go on to a Q plate. This is how some kit cars are able to keep the donor cars registration plate. How much of a car has to be replaced before it's deemed a new car?
I'm assuming that the chassis number must be the same so if I had an old car and replaced everything within 20mm of the chassis number plate and or the etched number, would the DVLA still consider it to be the same car?
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