Autor Tema: International Space Station (ISS)  (Posjeta: 51439 vremena)

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Offline 2001

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Odg: International Space Station (ISS)
« Odgovori #270 u: 29.04.2015. u 11:39:50 sati »
shebala ih digitalna tehnologija...kad se sjetim sto su sve radili na cistoj mehanici u interplanetarnom prostoru ;)
"Nitko nije učinio veću grešku od osobe koja nije učinila ništa jer je mogla učiniti malo"
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Offline Mali princ

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« Odgovori #271 u: 29.04.2015. u 13:42:26 sati »
Može ovako ostati u orbiti još 5 do 6 dana prije nego što završi u atmosferi. Ali, već je sad pitanje jeli uopće još ima električne energije s obzirom da zbog vrtnje ne može puniti baterije. Pravi šest obrtaja u minuti. Loša je današnja vijest da Progres nije odgovorio na komande da se prebaci sa svoje automatske kontrole na sustav koji omogućuje ručno upravljanje iz kontrole na Zemlji.

Offline Fire

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« Odgovori #272 u: 29.04.2015. u 15:45:50 sati »
Izgleda da je došlo do neke greške u separaciji 3. stupnja rakete nosača i Progresa što je uzrokovalo dodatni "udarac nogom u tur" Progresu koji zbog toga sada ima oštećeni hardver i nekontroliranu rotaciju na visini za 30km višoj od predviđenoga.
http://www.spaceflight101.com/progress-m-27m-mission-updates.html
Citat:
What followed after Progress headed out of communications range was abundant confusion on the state of the spacecraft, its orbit and the performance of the Soyuz rocket. Reports issued by Russian news outlets were conflicting and orbital data provided by U.S. and Russian sources was not matching up – initial USSTRATCOM data showed the Progress & its third stage in an orbit of 127 by 251 and 123 by 306 Kilometers – a very short lived orbit that would have only lasted until the first half of the day on Wednesday before natural decay. Russian radio tracking data indicated that the perigee of the orbit had been close to the expected value of 193 Kilometers, but the apogee, targeted at 238 Kilometers, was showing a +30-Kilometer overshoot indicating an overperformance by the Soyuz rocket.

It took USSTRATCOM several hours to get a precise fix on the orbit of the Soyuz and Progress, issuing another erroneous Elset along the way before the first accurate orbital parameters were released after 21 UTC on Tuesday:

2015-024A (Progress M-27M): 188 x 260 km – Inclination: 51.65 deg. (Epoch 20:50 UTC)
2015-024B (Block I): 176 x 187 km – Inclination: 51.65 deg. (Epoch 20:12 UTC)

The orbit of the Progress will last for at least one week, barring no unexpected change in atmospheric conditions or a spacecraft-induced loss of altitude. Block I is headed for re-entry some time on Wednesday.
   
This orbital data once and for all confirmed that Progress was not in danger of re-entering on Wednesday, April 29. It also confirmed that there was some truth in the speculation of an overperformance of the third stage evident in the higher apogee that is well above the target of 238 +/-5-Kilometers given for this launch of the Soyuz 2-1A.

It is plausible that issues emerged late in the third stage burn of the Soyuz leading up to a botched separation of the Progress spacecraft, sending the spacecraft into a tumble or causing a re-contact between the Progress and the Block I stage, presumably due to residual thrust after an improper engine shutdown and so damaging equipment on the spacecraft leading up to the loss of communications and possibly upsetting the attitude control system of the craft - explaining a later onset of the spinning motion.

Orbital data also confirms that the Progress did not receive parameters for its first two orbit-raising maneuvers that were to be uplinked immediately after spacecraft separation.
Russian media continued to report different versions of potential failure scenarios from issues with the third stage engine to a bad separation between the booster and the spacecraft, however, no confirmation on any causes was provided by the Russian Space Agency as teams continue to work through the data to identify any anomalies - either related to an intrinsic problem aboard Progress or issues induced by the operation of the launch vehicle.

[youtube]http://www.youtube.com/watch?v=7cigEyJJcGQ[/youtube]

Sada je očito pitanje gdje će se ući u atmosferu i dali će koji komad negdje pasti na Zemlju(?)
To bi trebalo biti u peridou od 3. do 11.05.2015.

Offline mrworf

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« Odgovori #273 u: 11.06.2015. u 03:53:59 sati »
Snimljen prelet ISS-a preko Jupitera!  :215: [71* :204:

https://www.youtube.com/watch?v=VBIDyDVyuQI
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Offline Acheron

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« Odgovori #274 u: 11.06.2015. u 09:15:35 sati »
Na pravom mjestu u pravo vrijeme :)

Offline Acheron

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« Odgovori #275 u: 19.08.2015. u 13:52:00 sati »
Jao, pratim lansiranje HTV transportera prema ISS-u i jadna spikerica ne odbrojava zadnjih 10 sekundi, već valjda odbrojava zadnje tri minute (tada sam se uključio) :zubo:

Offline Arkturus

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« Odgovori #276 u: 02.10.2015. u 13:31:57 sati »
Novi Progress na stanicu je dopremio češnjak.
Baš sam se pitao gdje nam je to s foruma nestao Garlic.

Offline Boski

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« Odgovori #277 u: 02.10.2015. u 14:23:00 sati »
 :218:
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Offline Accuphase

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« Odgovori #278 u: 02.10.2015. u 16:30:09 sati »
Novi Progress na stanicu je dopremio češnjak.
Baš sam se pitao gdje nam je to s foruma nestao Garlic.

Jesl li siguran da ga on toliko obožava, nego stvarno gde nam je mašinovođa, ne reče li "vratiću se na jesen"?

Offline Human

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« Odgovori #279 u: 02.10.2015. u 17:07:23 sati »
Novi Progress na stanicu je dopremio češnjak.
Baš sam se pitao gdje nam je to s foruma nestao Garlic.
Naljutio se nešto i otišao je.