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here

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decorations

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well we lost her to the low clouds early

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but in a blaze of light there she is

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everything is normal propulsion and

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trajectory

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in a blaze of light and a trail of gold

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as aryan 5 reaches into the skies above

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french guyana on her way

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to deliver

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atv3 which will make her way to the

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international space station next week ah

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we've lost her through the crowd so the

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launch vehicle first clears the pad in a

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and the launch vehicle has just passed

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mac one is past the speed of sound

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six kilometers in altitude 317 meters

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per second

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773 tons at liftoff she's burning five

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tons of fuel every second 2.5 tons in

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each booster those are the big flames on

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either side

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and the epc the core stage and the

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center is burning another 300

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kilos per second

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ariane following the program in the

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onboard computer which gives all the

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orders including stage separation which

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we will soon see

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because the boosters and the first stage

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are burning down the boosters will burn

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another maybe 20 seconds and then

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get the order from the onboard computer

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you know

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in all they will burn for around two

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minutes

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and they will deliver 90 percent of the

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thrust

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at liftoff

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boosters burning their 240 tons in just

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over two minutes

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you can see the three points of light

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there the two on either side

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if they come back it looks like we lost

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to the clouds again two on either side

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luca on the left on the upper left of

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the screen there's a cursor and a bottom

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left

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a and v

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that's right a the altitude we had 63

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kilometers already two minutes and 20

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seconds and we are at 67 kilometers from

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just called out the successful

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extinction and separation of the

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boosters you see what that looks like

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there's one on the other side out of

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camera range

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dropped right on time and on target

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before the boosters are empty their push

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diminishes and this is what the onboard

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computer senses at the drop in

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separation occurs one second after the

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onboard computer has detected this speed

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loss did you mention the altitude and

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the speed right so v the speed as you

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can see 2.24 kilometers per second per

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second not per hour

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and if we look at the curve the curve is

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a projection of where it should be and

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the dot is the actual position of the

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launch vehicle so as long as the dot

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remains on the curve everything is going

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very well so it's real time superimposed

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on optimal

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thanks a real trajectory and

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okay we're waiting for the fairing

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jettison so the pharyn is a 17 meter by

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you can see how that happens there are

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two halves actually the other is out of

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camera range on the other side

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blown away by what a series of uh

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pyrotechnic chords i think that's right

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so it's actually a very light structure

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although it is 2.4 tonnes but it's 17

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meters high 5.4 meters wide it's a

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carbon fiber honey um sandwich around

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100 aluminum cone and it protects

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the payload from the dense atmosphere as

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it goes through then once we get out of

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this dense atmosphere around 100

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kilometers up we don't need the ferry

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anymore so we have a vertical separation

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system the horizontal separation system

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they break the fairing into separation

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you don't need it it's just dead weight

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why not get rid of it back with more of