Pojawiaja sie juz powoli zarysy misji technicznej testujace nastepnika sond hayabsuha.
Misja Okeanos do trojanczyko ma kosztowac okolo 240 mln euro. Jak na misje do planet zewnetrznych
to powiedzialbym, cena jest o rzad wielkosci mniejsza niz poprzednie misje w tamten rejon.
Ladownik bedzie bazowal na niemieckim maskocie, czyli nie wymaga zbyt duzo slonca co jest korzystne
dla misji tak daleko od slonca. O ile dobrze rozumiem, mozliwe jest odwiedzenie wiecej niz jednego trojanczyka
z ladowaniem a nie tylko krotkim przelotem, jak misjach starego typu.
Misja bedzie oparta o Solar Power SAIL - czyli kolejny, wiekszy juz, zagiel sloneczny.
Informacje zostaly zaczerpniete z magazynu wydawanego przez japonski
instytut ISAS - Institute of Space and Astronautical Science:
http://www.isas.jaxa.jp/outreach/isas_news/files/ISASnews456.pdf"Whole meeting of OKEANOS team on 018/10/18
This is the first time I've been able to do so.The objective is to reduce the cost constraints(gross
Funds 300 billion) to meet the conditions of"solar power
Outer planet exploration mission by OKEANOS, sails
This is to agree on a cost-down plan for the"new transaction".
Less than 300 billion yen including launch and operation costs
How tough it is to meet the European and American Exploration Mission
It is clear if you look at.For example, NASA's Jupiter probe
Juno is 1,100 billion yen, the ESA comet Rover Rosetta is
1,800 billion yen, Saturn spacecraft Cassini is 4,300 billion yen
It is not the same.Moreover, Japan has no experience of extrasolar planets exploration、
It must be said that there is a big gap even in technical capabilities.
To overcome these handicap, we have to"obscure
We propose OKEANOS as the same engineering mission
You can do the following:Engineering mission is different from experimental aircraft, only technology demonstration
In addition, it is possible to perform physical observation without fail.However, until the results of physics
It does not matter.Technology and environment in the new exploration unprecedented in the past
In order to achieve the results, it is necessary to
The sauce will swell greatly.So, first of all, science
In the future, we will establish an exploration scenario that includes the measurement of the Earth's surface, and make sure that it is understood in and out of the next device.
The strategy of the engineering mission
It is.In fact, Hayabusa caused a lot of problems
It was, in the"Hayabusa ２"it is sufficient to modify these
We have grown into a mission that can be expected to produce results in physics.
We're doing this engineering mission to explore the outer planet
This is the first time we have been able to do so.Solar power in the outer planet region
The amount is reduced, and the need Δ V is also increased.The
You can even land or sunburn if you want to do a flyby or a rendezvous.
Direct exploration such as pull-return is difficult.To this solution
The Solar Power SAIL is the one that can be used for solar power generation.Large area thin film
To ensure sufficient power in the solar cell, and use this to achieve high thrust
By driving the ion engine of the jospheric・saturnosphere straight
It is possible to direct exploration.Solar we propose in this plan
The name of the sea god OKEANOS is given to the Power SAIL probe, and it is called "gaiwu".
It is the determination to make it possible to move freely between the starry areas.
It was made for a long time.
Plan-A, B, A' as a mission proposal for OKEANOS
There are three.Plan-A is a landing mission, high ratio thrust
Force ion engine and Earth swing by, Jupiter swing bar
This is the first time in the world to run on a small planet
I'll be Debu.So, after conducting a remote observation of an asteroid、
Landing the lander on the surface of the asteroid, sampling, in-situ analysis
To do.Use the cruising environment before the asteroid arrives
In addition, various kinds of physical observation will be carried out.Plan-B landing & sump
This is a return mission.After the Plan-A implementation, landing
The machine took off from the asteroid surface, the mother ship and rendezvous docked
The collected sample is transported to the mother ship.Then the mother
The ship sampled the lander again, and then through the Jupiter swing-by-the-fly sample
Take it home with you.Plan-A ' landing&multi-laden launch
It is also possible to use.After Plan-A is carried out, another Jupiter-troll small planet
This is the first time I've been able to do this.
OKEANOS is proposed as a medium-sized plan in 2015 年２ 月
It will be a promising candidate, 2016 years 10 months from two years pre
Phase A2 review of the system and key technology
Deepened(see photo).As a result, Plan-A, B, A'
It is expected that both of them will be technically feasible.But、
The biggest challenge is cost.Confirmation of completion of pre-phase A2
To move to the pre-project to pass the meeting, 300 billion
The condition of the constraint of the yen must be satisfied.So, the
The following discussion about the drastic slimming in the whole meeting of the head
It was a great honor for me to be a part of this project.
① Configuration: Select Plan-A and select sump
The company will not conduct a return on its assets.
② The lander is greatly simplified and lightened.More specifically, the figure
Autonomous control of the battery track control system, chemical propulsion system, and landing legs
It is not carried out."Hayabusa ２" small landing machine MASCOT
As well as for the free fall and the attitude invert device after landing
It's a good idea to have a look around.Sampling is done only by the surface sampler
However, it is not equipped with an underground sampler.In-situ analysis(Mass
Analysis), the stage heating method and the pyrolysis method only and gas chromatography
No matography is included.By these about 100
the mass of kg is not more than 40 kg.
③ As far as possible, such as reducing the number of ion engines
Simplify and reduce weight.
It might look like you've made a lot of drastic changes.
If you are a fan of the series, you will love this game.Koss.
The mission's significance and value are lost by lowering the cost of the mission.
This is the first time I've been able to do so.But this time it
It does not mean that the decision on the change was easy.For example
To stop the sample return is a rendezvous Docker
It can be used for the analysis of samples on the ground.
This leads to the fact that these personnel take the playing field
It is to.This agreement will not survive as a mission.
It can be said that it was a decision of the agonizing because it takes a long time.
OKEANOS pre-phases in 2018 year 11-12 month
A2: I received a confirmation meeting.Cost estimates must be confirmed separately
However, other than that, we got the evaluation that it is reasonable.
Landing of"Hayabusa ２" which was carried out the other day was superb.
This success is the result of fully utilizing the experience of"Hayabusa"
It is also possible to use it.OKEANOS as an engineering mission following this
It's a great way to explore the solar system and make it even more interesting
I strongly believe that it will be a great success.
(Osamu Mori）"
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Wątek: Japoński program kosmiczny (Przeczytany 200557 razy)