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we're off in a minute we're gonna cut

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away let you hear the ddo

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call out the final countdown enjoy the

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foreign

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decorative

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me

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and so we are underway did you see at

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1852 local time and right on time ariane

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5 began her mission lifting up

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beautifully

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showing a lot of power right from the

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ground here in french guyana with a lot

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of fire beginning her second mission of

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the year the 2010 atv going to the

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international space station

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beautiful shots always impressive for

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the people at the observation sites

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around the base in their cars or on the

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beaches area and lifting off in her

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trail of gold she's making a turn now

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she's going to pass overhead we're about

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15 kilometers from a launch pad and even

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here you can still feel the sensation of

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launch but if you're watching from that

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closed viewing station which is only

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five kilometers away you can really

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experience that sensation of the

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acoustic noise from those two solid

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rocket boosters as they provide right

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now ninety percent of a thrust

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propelling the launch along its

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trajectory at ever higher velocity it

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really is quite sensational to witness

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there in toucan how many uh launchers

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have you witnessed i've been fortunate

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to witness two from there

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plus tonight from here

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777

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tons is there just wait that lift off

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the ddo is saying that everything is

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okay on board she's burning if you can

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believe it five tons of fuel every

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second five tons of fuel every second

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2.5 tons in each booster plus the core

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stage the lower stage burning another

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300 kilos per second the launcher now

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following the program in the onboard

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computer which gives all the orders

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including stage separations which we'll

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soon begin to see we are in the first of

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four flight phases we'll describe each

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in turn so you can follow ariane right

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now the first flight phase the single

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vulcan core stage burning with the

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boosters the boosters are going to burn

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for another four or five seconds and

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then they will be extinguished and

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you'll see them

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probably ah looks like the extinction of

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the boosters you can see them falling

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the orange lights are the boosters

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flaving out and the single point of

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light in the middle of your screen is

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ariane continuing to burn yes vedio has

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announced for separation of the two

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solid rocket boosters and coming at a

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time at 65 kilometers in altitude

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take a look simon at the left side of

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your screen on the upper left you have

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the cursor crawling up a line below that

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some letters and some numbers a and v

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can you explain yes uh so looking at

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this screen this is aryan's trajectory

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it's showing us how the flight is

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progressing the curve it's a computer

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simulation of the actual trajectory and

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that white dynamic curve this is the

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actual position of a launch vehicle

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right now

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there are actually two trajectories one

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is the optimal trajectory and the real

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time trajectory as long as we're one on

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top of the other we're right where we

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should be right exactly superimposed

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perfect so the v mains velocity and

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right now we are traveling at 2.4

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kilometers per second and the a this is

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the altitude so now we're 106 kilometers

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already

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we're out of the earth's atmosphere or

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will be shortly which means the fairing

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can be jettisoned there it is coming

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right on time at about a hundred

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ten kilos we're using a new fairing

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separation system tonight aren't we

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that's right uh and in the past few

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years workspace in switzerland the aryan

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fire fairing manufacturer

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they have been developing a new system

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to support referring separation event in

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this new system with the aid of

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pyrotechnics referring first separates

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from the ariane

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around its uh circular base happens very

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very quickly very quickly indeed 56

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milliseconds to be precise and during

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this time of separation it's aided by a

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series of uh very precisely tuned

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springs around the body of ariane so at

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this point we can say the fairing has

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been separated only by a few millimeters

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mo vena command is sent to separate

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referring two halves the whole event is

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over in less than 100 milliseconds now

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they wanted also a new design a shock

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reduction system a low shock

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yes exactly the whole concept this

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endeavors to minimize the shock

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environment transmitted to the aryans

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passengers today it's the first mission

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of this system so a special hello to the

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whole work team in switzerland

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the new shock reduction system was five

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years in the making

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the fairing separated first horizontally

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then pushed up and away laterally we're

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in the second powered flight phase the

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single core engine burning simon what's

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the role of the single core stage well

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the epc this is the main cryogenic stage

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and it uh for some details it's 5.4

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meters in diameter and it's 31 meters

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long it's powered by one vulcan ii

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engine that burns liquid hydrogen and

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liquid oxygen the vulcan ii engine

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provides up to one million four hundred

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thousand newtons of thrust in the vacuum

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of space and it's nozzle it's it's

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gimbal to provide a pitch in your uh

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pitching your control for the uh for the

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area and vehicle

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we're doing fine on board area and

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performing flawlessly more the mission