Embed code
Note: this content has been automatically generated.
00:00:00
uh_huh that's all
00:00:04
okay so good evening everyone yeah um how likely a lot in so many
00:00:10
that the have the commitment they they want first of all thank him
00:00:13
uh for the help you gave me a in order to operate a two properties presentation then in
00:00:21
one for sure to things again of the mm professors and the visor that are here
00:00:26
for as and uh i want to thank you for for assisting to our
00:00:30
project so well known does eating it i will told about the
00:00:35
the main channels that our team uh is facing in namely in to a um
00:00:42
in two teams that are are a dynamics and mechanical so the um the
00:00:49
the first the uh the first time judge on this i want to talk about is our unending for sure so most of
00:00:55
you may argue what what you are in the back you watch which kind of a challenge us are you facing off
00:01:02
uh then we which kind of this goes forces the you have if you
00:01:06
are at about one hundredth of the um atmospheric pressure at sea level
00:01:12
well for sure we don't have so much a direct uh
00:01:14
so the dress code huge uh a viscous forces
00:01:19
but uh we have another problem which uh comes from a property of that here
00:01:24
that you can experiences every day which is the compress it related so
00:01:28
the most of you probably have the place when i when you were a child or white with the
00:01:34
empty syringe trying to squeeze the air out of them syringe or maybe pumping the air um
00:01:40
well in our bicycle palm into the tier of the whites so what is going there is in if you did that
00:01:47
um yea you've certainly experiences some resistance off a year from
00:01:52
i'm from the east on that is pushing a or
00:01:55
that the this because that the piston eh um is pushing their and does not
00:01:59
allowed to the full to air to go uh around the piston and uh
00:02:05
if you think the high pulpits exactly these we are pushing a piston throw 'em of what you
00:02:11
but at one thousand two hundred kilometres per hour as it then this show so
00:02:17
the thing here here is that that we are we have a um
00:02:21
a modest transportation which is our paul which at the cross section which is really comparable to the side of that you
00:02:28
so what does in what's going there is that the here it's compress it uh so
00:02:33
much that the flow of the year will show car on the part and we'll
00:02:40
if you want we'll uh uh make arise some losses interval speech to our part in this is the
00:02:47
channel for moderate dynamic team so we don't maybe we don't need a really fast design for
00:02:51
uh the direct viscous behaviours corps forces but we need the fancy design
00:02:55
uh because it takes is um i geometric relation between the cross
00:03:00
section of the pardon the cross section of that you which is call can probably to meet if we stay about this limits
00:03:06
we will have a problem we've we will stay below this limits then we can um
00:03:12
we we will be fine but it's so it's also trade off between uh the side of the boat we can see
00:03:17
what we do are really large uh what real large tube in order to not have this kind of problem
00:03:23
but then or a large there would be a problem them of course is not
00:03:25
really attractive going to reform of them in term of a selling so
00:03:31
on the other side department has to um do hostile enough pretty enough people or uh or
00:03:38
to be enough comfortable to the people so eh it's it's a matter of trade off
00:03:43
uh this takes me to the next slide which is the calm
00:03:46
forte i'm not speaking about converting them of how nice is
00:03:49
that share where we are going to lay down during your trip but in speaking about their comfort in term of
00:03:56
even told vibrations or a expo or or like a acceleration experiences
00:04:01
that the our customer will use will affect um experience so
00:04:06
and just to give an idea if you took a your p. actual slide
00:04:12
um european shows lives uh eh um has the liftoff from the uh from ground at two hundred
00:04:17
two hundred sixteen the two hundred six hundred twenty six dear reader for our and that
00:04:24
the um this acceleration of course in about twenty five seconds so
00:04:29
to simplify or live uh the acceleration is about three meter per second square
00:04:35
and that even if some of you can feel uncomfortable in uh during this acceleration
00:04:39
we can't thing to apply the same of federation quite remote if you want
00:04:43
to reach one thousand two hundred kilometres per hour with the same acceleration
00:04:48
the time uh that we did ten that will i it would be about the two minutes
00:04:54
to to reply to the market to mark the metal is a question yes
00:04:57
from eugenia about tools on is about five minutes if you want
00:05:02
because the length uh that uh i probably cover with
00:05:06
this beating with acceleration it's twenty kilometres okay
00:05:10
in in two minutes if you think it to the matinee
00:05:13
but it's a japanese technology a basin superconducting technologies
00:05:17
that it goes that the six hundred kilometres per hour at the top speed
00:05:23
and it will cover the same amount of space let's say eighteen kilometres so you can face it um which
00:05:29
are the challenges in term of vibrations acceleration that eh
00:05:33
we have to we have to take care um
00:05:38
for sure let's say we accelerated we everyone it everybody's
00:05:43
fine we aim our ever eh yeah we
00:05:46
have the cruise speed which is uh one thousand the uh one thousand hundred kilometres per hour
00:05:51
then i fear of course because it can be so we have to go back to
00:05:56
the most save state of the part which is namely the state you want
00:06:02
but now we yeah we are at one thousand two hundred kilometres per hour
00:06:06
so if you think to it what training and to the day um
00:06:11
incredible kinetic energy that is bringing the strain uh um in in
00:06:17
in that case the conventional breakers for for for train we'll
00:06:20
we'll camp the rail and we hit up and we to transform the kinetic energy into heat one if you want
00:06:27
heating up of the breaks in the rails so we in that case
00:06:31
we have to uh well we're design really well uh the um
00:06:36
the brakes in order to which that would withstand a really huge temperature okay
00:06:41
but once you have designed we well the the breaks you have to remember that the bodies man wrote people so you
00:06:48
can't break too fast because you can't push and people five g.'s so it's a tradeoff also and this guy
00:06:55
so
00:06:57
the last part it's if you want
00:07:01
is that again we are in vacuum so uh um if you we like aeroplanes today so we say we took
00:07:09
an aeroplane at ten kilometres of fate because that's their normal uh eight of the um of privilege one
00:07:17
the pressured right there it's about one fourth of the pressure at sea level
00:07:23
so this means that if we have a leakage into our plane um
00:07:29
the um question unconsciousness they can of course between thirty seconds in one minutes that's
00:07:34
why the hostess tell you put the mask offer and brief hearing case of
00:07:39
so we have to think getting hyper open
00:07:42
we have a much worse problem because we have a one hundred of
00:07:46
them atmospheric pressure so the hypothesis ear uh mm problems can be
00:07:52
can be more and more of um we can affect more
00:07:55
our customers so um we have to think also
00:07:59
to um supply our customers with fresh ears in case
00:08:04
out of the cage and this actually is uh
00:08:10
the those are a as you can see there are really a lot of challenges
00:08:13
that of course among an incredible amount of uh uh feels incompetence is in
00:08:20
got going back to what the um italy embolden were saying get p. f. l.
00:08:23
it's an incredible place where to get or the the teams and the
00:08:28
to also if you want to mix up confidences and teams in
00:08:32
the engineering mechanical team drawl not only mechanical engineer there are
00:08:36
um uh there are several uh feels like monster engine years and they like
00:08:41
to go and the physicist and uh and it's even engineer so um
00:08:46
it's really i am really glad to be in this project and re
00:08:49
you really glad to the news to involve mean these because
00:08:53
just to let you know i'm there i'm there and i'm weekly there but might feel them background the superconductors
00:08:58
and then the feces so it's really really far away from these but i i think it's a good eh it depicts frequent
00:09:04
well what's going on in these in these uh these themes that uh again i want to things uh and uh
00:09:10
and i think that the the now it's it's it's the time of uh my neck scully that we'll talk

Share this talk: 


Conference program

Opening Speech
Martin Vetterli, Professor
1 March 2018 · 6:08 p.m.
History of Swissmetro
Marcel Jufer, Professor
1 March 2018 · 6:17 p.m.
Mechanical Design Challenges
Nicolo' Riva
1 March 2018 · 6:45 p.m.
Energy Handling and Propulsion Challenges
Theophane Dimier
1 March 2018 · 6:54 p.m.
Questions from Public
Panel
1 March 2018 · 7:04 p.m.

Recommended talks

Keynote: How Design Really Improve Events
Christof Breidenich, Designer - Scientist - Lecturer - Performer
22 June 2015 · 9:12 a.m.
senseFly
Jean-Christophe Zufferey, CEO senseFly
24 March 2014 · 7:22 p.m.