[OT] Volcanic fallout?

[Vortex6]

It was an interview with Piers Morgan, referred to about 70% down this page:

[Adrian]

Vortex6 gurgled happily, sounding much like they were saying:

"(In fact, asked by Morgan whether he had slept with 30 women, Clegg replied, 'It's a lot less than that.')"

[ARWadsworth]

No. It is pretty boring really. Like most people, he has baggage/past.

[tony sayer]

Wouldn't raise an eyebrow en France;!...

Seems the flying ban is almost over least in the North?..

[Steve Walker]

Apparently they had to keep varying their angle, as the engines require a specific range of airspeed to re-ignite, but they'd lost their airspeed indication. They chanced losing altitude more quickly than required in return for continual variations, hoping that one of their ignition attempts would co-incide with the right airspeed.

I don't know how true this is, but that was what was stated on Air Crash Investigation - funnily enough repeated a couple of nights ago.

SteveW

[Andy Champ]

Not AFAIK, but the opposition is possible.

300 quid a minute. I thought Concorde was expensive enough!

If you want DIY they do trainer stuff too.

Andy

[Dave]

I never went into this in any depth, so I have to accept what you say, but I have my doubts. I dabbled in spin trials many years ago, but didn't get to meet the aircrew till many years later to ask them.

I can't see that happening. There is a pitot static system on aircraft that doesn't require power. Pitot reads the air speed from probes that point forward and this air is transferred to a simple gauge that measures and displays the speed. Usually duplicated so that the co pilot gets a reading from a separate probe from the pilots source.

The static side of the system relies on static wedges fitted to the side of the aircraft, whose orifices are pointing sideways and are protected from being pressurised by the wedges I mentioned. They are designed to measure accurately the air pressure and calculate the altitude from air pressure, this is a measure of vacuum from ground QFE (ground air pressure at the time they are about to taxi out. They get this from the control tower and on route from air traffic controllers, who get their info from any number of ships when they fly over the sea.

That's something I'll look into, thanks.

I've watched that a few times and I always thought it was either padded, or bulled up for TV.

I have spent some time working with our UK Aircraft Accident Investigation Branch on three crashes and they didn't work like the ones in the US prog.

Dave

[dennis]

The probes fill up with ash. the same happens with the engine sensors and various other bits.

[Nightjar]

Are you sure you are not thinking about the Gimli glider? Captain Moody managed to get engines restarted, so could fly to the airport.

Colin Bignell

[Bruce]

No, the exact quote was "less than 30".

[Dave]

I very much doubt it, as there is no air flow through them. Because of this, the ash would flow around them. We never encountered this problem with any aircraft supplied to Saudi Arabia.

The engine sensors are only interested in the air temp into the engine. There are no other bits.

Dave

[dennis]

Which volcano eruptions have these Saudi jets been flying through?

fuel flow, air flow, temps, pressures and lots of things. There are lots of bits affected by ash, the turbine blades are one of them.

[Bob Eager]

But, of course, you have to keep the old messages indefinitely to ensure you have context for later posts.

[Dave]

The sands of Saudi Arabia. Don't forget, I worked on development from

1978 to 1999 and the Saudi jets were shipped and sorted during that period.

Done at the engine, before the high pressure pumps if I recall.

Calculated from the speed of the engine when the aircraft was built. after the aircraft is built and before it makes its first flight, there is an engine run done that checks the amount of fuel that an engine needs and this is compared with the engine is sucking through. This is almost a days work. This is programmed into the engine control unit and stays there until the engine is changed. The next time this is checked, is when an engine is changed and the aircraft is subjected to another engine run.

Taken from the compression area in the engine.

In the cockpit, there are only NL, NH gauges. These are to tell the crew what the temperature in the low pressure and high pressure chambers are.

Along with, possibly the bearings in that area.

I can't remember what your area of expertise is, but please leave others to write about theirs.

Dave

[geoff]

In message , "dennis@home" writes

Stick to telephones dennis

it's obvious that you have found another discipline which you don't understand and are determined to show everyone

[george [dicegeorge]]

Things will wear out a lot quicker when they start flying again, so air fares will increase.

Paint, glass, etc.

[g]

[The Natural Philosopher]

the question is, who gets reamed.

Will it be the private sector, the public sector or those on the sosh?

[Huge]

There is no subject about which dennis isn't prepared to be utterly wrong. And no forum in which he isn't prepared to demonstrate it. You really should killfile him.

[Dave Liquorice]

Wrong type of dust.

Fine, sharp, volcanic ash is not the same a smooth, weatherered, desert dust. I would not expect it to behave in the same way.

[dennis]

Don't forget that sand is weathered rock not volcanic ash. Ash is more like moon dust than sand.

You have zero expertise in volcanic ash, please don't comment on stuff that you don't have any experience with. Especially don't try and pretend sand is the same as volcanic ash, assumptions like that kill people