Saturday, September 17, 2011

Orion MPCV-MIssion to Mars,Slow developments

 According to prliminary report for NASA's Space Launch System and Multipurpose Crew Vehicle-2011, the challenges and developments in summary were-

NASA was required upgrade it's SLS so that lower versons hardware can be used for it's future missions to astroids and mars.According to expected capabilities as-

1. To 70-100 tons to lower earth orbit and 130 tons or more in further developments.
2.Able to lift MPCV
3.For supplying and supporting cargo and crew to ISS when needed.

Five heavy lift launch vehicle families were reviewed according to weighted figure of merit as follows-

1.Affordability-55%
2.Shedule-25%
3.Performence-10%
4.Programmatic-10%

By this 27.5-foot LOX/LH2/SSME HLV and 2Mlbf GG RP vehicles were highest rated across all of the FOMs

Current SLS vehicle design utilize to the maximum extent practicable assets from Space Shuttle Program and Ares Project. The Reference Vehicle Design is an in-line,
1.large-diameter liquid oxygen/liquid hydrogen (LOX/LH2) core stage with multiple liquid propulsion core stage SSME-derived engines, and two five segment solid rocket boosters.
2.The Upper Stage consists of a J-2X cryogenic Upper Stage with approximately
294 klbf thrust capability, initially lift approximately 100 tons to LEO, and be evolvable to 130 tons or more; 3. be able to lift an MPCV; and
4.be capable of serving as a backup system for supplying and supporting cargo and crew delivery requirements for the ISS.

The Requirements For MPCV are-
1. To serve as the primary crew vehicle for missions beyond LEO.
2.To conduct regular in-space operations.
3.Provide an alternative means of crew and cargo transportation to and from the ISS
4.Capability for efficient and timely evolution.

NASA’s  designs for the beyond-LEO (formerly lunar) version of the Orion include the following basic capabilities and specifications – all of which were traceable to MPCV requirements
1.Crew size: 2 to 4
2.Crewed mission duration: 21.1 days
3.Velocity change capability: 5233 ft/s
4.Main engine thrust: 7,500 pounds
5.Pressurized volume: 690.6 cubic feet
6.Net habitable volume: 316 cubic feet
7.Skipped Entry Capability: Can traverse up to 4,800 nautical miles (nmi) from atmospheric entry interface to landing point from lunar return trajectories;
8.Landing: Water landing off California coast with a 5.4 nmi landing accuracy
9.EVA Capability: Via depressurization of the crew compartment

Based on the aforementioned minimum capability requirements listed in Section 3.1 of this report, NASA has concluded that--

Given the applicability of the current Orion work, NASA’s Reference Vehicle Design for MPCV is the beyond-LEO version of the current Orion. It must be emphasized for clarity that the MPCV design will be optimized for beyond-LEO exploration capability. Any contingency utilization as a backup-LEO crew vehicle will represent a highly inefficient vehicle usage.


It is not yet clear whether the Reference Vehicle Design fully meets the NASA Administrator’s three principles for development of any future systems for exploration -- namely that these systems must be affordable, sustainable, and realistic. Further work is required in assessing potential contract changes, oversight simplifications and other cost-saving measures to understand the degree to which this development meets these principles. NASA recognizes that new affordability strategies must be implemented in the design and Project management process to meet a constrained budget environment

.http://www.nasa.gov/pdf/510449main_SLS_MPCV_90-day_Report.pdf


MPCV was announced by NASA on 24 May 2011,and will launch a delta IV heavy rocket in july 2013.




NASA had hoped to follow this (now obsolete) schedule in development of the Orion
  1. 2006–2007 — Engineering review of selected design
  2. May 6, 2010 — PA-1 (Pad Abort-1) unmanned  pad abort test
  3. 2009 (Sep) — AA-1 (Ascent Abort-1) unmanned ascent abort test.
  4. 2010 (Spring) — PA-2 unmanned pad abort test
  5. 2010 (August) — AA-2 unmanned ascent abort test
  6. 2011 (February) — AA-3 unmanned ascent abort test (low-altitude tumble test)
  7. 2012 (September) — Ares I-Y unmanned ascent abort test (high altitude)
  8. 2014 — First unmanned flight of Orion in Earth orbit
  9. 2016 — First manned flight of Orion in Earth orbit.
  10. 2015–2018 — First unmanned flight of Altair.
  11. 2016–2018 First manned flight of Altair.
  12. 2019 First manned lunar landing with Orion/Altair system.
  13. 2020 Review of Mars missions
  14. 2031 The Mission to Mars has tentative dates
The report tells why developments are slow.Why affordability has given largest weightage.I can not understand that why funding for these missions is difficult.Why talented persons not avaible to meet the requrements for such mission.If this is a so long term mission,and life of a human is less than this,why we can not prepare more concentrated persons for this.We take it as a daily life job.I think we have less time period to be prepared for another disaster,as much we know about space.



Thursday, September 15, 2011

Intel's Ivy Bridge processor


Intel's new Ultrabook processor 'Ivy Bridge' has to be launch.It will use-
1.Trigate transistor technology to reduce power consumption
2.Next generation intel HD graphics with Direct X11,openGL 3.1,openCL 1.1 support.The built in GPU is supposed to have upto 16 execution units(EUs).
3.Next Generation 'Intel Quick Sync Video' for fast video streaming.
4.PCI express 3.0 support for high bandwidth.
5.New random number generator and RdRand instruction,which is codenamed 'Bull Mountain' for security.

This will 20%increase in CPU performence and 60% increase in integrated graphics performance.

The main emphasis on power saving and security.



If there is emphasis on only for high bandwidth and power saving,the cost can be reduced.Because the main emphasis of most users is fast streaming video on internet.


Wednesday, September 14, 2011

Congressional Research Service report --A view about india


US SRS report about india has been published on 1 sep 2011.The topic is "India:Domestic issues,Stratagic dynamics and U.S. relations." It is made to understand the relations with india and making policy according to that.It is for U.S..
But It gives view that how other country visualize india.
It is a balenced report.It covers topics well --india economy,india civil nuclear cooperation,human right concerns,india's forign policy and forign relations.


http://www.scribd.com/doc/64911242/Congressional-Research-Service-Report

Tuesday, September 13, 2011

A Decision,which is threat to common person !

After 9 years of investigation on 12 september2011, Supreme court has sent the case of murder of ahasan jafri ,gulbarga society case ,to the lower court .
This shows how our 'law' is in hand of killers.This shows that if any body can not get justice by suprime court ,then that person should assume himself as a 'slave'.And slave should do all those efforts ,that a slave can do to get freedom.
This case of gujrat riots is threat to all of us.This case teach killers that how to do murder and be unite so that even supreme court can not give justice to victims!


http://www.indianexpress.com/news/Disappointed-over-the-SC-verdict--Zakia-Jafri/845640

Which type of country this is?

In 2005 ,when there were blast in delhi,at 8:15 evening ,I have heard a shout voice of a man ,behind news anchor "Lal Singh" that "tujhe to phaansi hogi" (You will be hanged till death).
I do not know who gave right to that person to threat on national channel delhi doordarshan,without showing his face and during news time by interrupting that.And this was heared all over via satellite.
Will delhi doordarshan clearify this ,"To which person the threat was given like this"?
I think that indian constitution have given right to doordarshan to give threat  by shouting on the channel.
Now there is again blasts in delhi high court,will doordarshn again announced the threat on it's news channel like earlier and will give death sentence.Where is that person who had given death sentence?Who will take respnsibility to give threat at news time .Will doordarshan call the "huji" and "indian mujhahiddin" on its channel and give threat to them.Because "Law is in the Hands of doordarshan".
Which type of country this is?