assalam-o-alaikum
Sir Riaz,
you must be doing something for our exhibition.kindly give us a reply in support of this event, as 16 days are left and we have to do arrangements.
I am in the process of collecting information. This is an 18 year old program and has been through several design cycles and test iterations. Failure seems to be due to loss of control and therefore I am trying out find out more about their actuator design and the gimbal system. The second stage cryogenic engine (RL-10) for Delta IV launch vehicles, on which I worked uses an electromechanical actuators.
Another theory is the failure of the cryogenic stage to ignite. ISRO is yet to put out a meaningful statement; it will take them a while to analyze the telemetry. Ignition system for the final stage is designed for multiple ignitions and is very robust.
Cryogenic engines have high Isp (450) and use low temperature materials (-250 degC) @ 45000 rpm. India has been buying Russian cryogenic engines for their geosynchronous launches; failure puts their GSLV launch vehicle at least three years behind (and not one year as they are claiming). Also the Chandrayaan-2 mission will be forced to use a non-Indian launch vehicle because it weighs at least 75% more than Chandrayaan-1 and cannot be launched using the PSLV.
I will write an article as soon I can deduct a possible meaningful conclusion.
Wa-Alaikumussalam,
Alhamdolillah, Everything is fine. It really has been decades since we talked last time.
I see you are Masha-Allah very active on this network. Its good to see pictures of Salman Qureshi and Quresh Diwan in your group photos. I Worked with Quresh Diwan on the same Nuclear Project WPPPS Unit 2 in Washington State in 1983 and visited his family too.
I had been in contact with Mr. Jawed Saeedi a couple of months back regd my Final Year Project , but there seems to be a change of email address from his end . He hasn't replied since then . Can you help me getting linked up with him again .
I am Industrial & Manufacturing Engineering Graduate of NED UET, batch 2007-08. I want to take some professional+educational knowledge regarding job/study abroad. I am available at m.hassan.aziz@hotmail.com. I will be thankful if you could give some of your precious time to me.
Regards,
Muhammad Hassan Aziz
At 8:04am on September 23, 2013, shamim uddin said…
Dear Riaz
I am NED graduate of 1972-73 batch and I have class fellow in your management panel 1-Arif Gafur 2-Farid Durrani, 3- Idris Khotari...i need their email adress or let them contact me Also can you create NEDIANS 1972-73 Mechanical Group in web site.
As the war enters 12th day, both the Israeli and the US militaries are using AI to accelerate decision-making, analyzing vast amounts of intelligence data for generating targets, and optimizing logistics, shifting toward AI-enabled command structures to maintain battlefield superiority. Almost all major US AI data center operators have signed contracts to provide AI tools and services to both the Pentagon and the IDF. This arrangement has not gone unnoticed by the Iranians who are…
President Donald Trump joined Israel in yet another war of choice in the Middle East last week. Polls conducted in the United States immediately after the start of the Iran war show that the majority of Americans do not support it. AYouGov snap pollfielded Saturday — the day of the strikes — found 34% of Americans approve of the U.S. attacks on Iran, with 44%…
Riaz Haq's Comments
Comment Wall (30 comments)
Sir Riaz,
you must be doing something for our exhibition.kindly give us a reply in support of this event, as 16 days are left and we have to do arrangements.
Another theory is the failure of the cryogenic stage to ignite. ISRO is yet to put out a meaningful statement; it will take them a while to analyze the telemetry. Ignition system for the final stage is designed for multiple ignitions and is very robust.
Cryogenic engines have high Isp (450) and use low temperature materials (-250 degC) @ 45000 rpm. India has been buying Russian cryogenic engines for their geosynchronous launches; failure puts their GSLV launch vehicle at least three years behind (and not one year as they are claiming). Also the Chandrayaan-2 mission will be forced to use a non-Indian launch vehicle because it weighs at least 75% more than Chandrayaan-1 and cannot be launched using the PSLV.
I will write an article as soon I can deduct a possible meaningful conclusion.
Alhamdolillah, Everything is fine. It really has been decades since we talked last time.
I see you are Masha-Allah very active on this network. Its good to see pictures of Salman Qureshi and Quresh Diwan in your group photos. I Worked with Quresh Diwan on the same Nuclear Project WPPPS Unit 2 in Washington State in 1983 and visited his family too.
Thanks for the response .
I had been in contact with Mr. Jawed Saeedi a couple of months back regd my Final Year Project , but there seems to be a change of email address from his end . He hasn't replied since then . Can you help me getting linked up with him again .
Thanks.
I have dropped them a mail . Lets hope for the best and thanks for the help.
Dear Sir,
I am Industrial & Manufacturing Engineering Graduate of NED UET, batch 2007-08. I want to take some professional+educational knowledge regarding job/study abroad. I am available at m.hassan.aziz@hotmail.com. I will be thankful if you could give some of your precious time to me.
Regards,
Muhammad Hassan Aziz
Dear Riaz
I am NED graduate of 1972-73 batch and I have class fellow in your management panel 1-Arif Gafur 2-Farid Durrani, 3- Idris Khotari...i need their email adress or let them contact me Also can you create NEDIANS 1972-73 Mechanical Group in web site.
Regards..SHAMIM UDDIN, shamimuddinbashir@hotmail.com
Very nice sir. You are working great in blogging.
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US-Israeli Military Use of AI: Iran Targets Data Centers
As the war enters 12th day, both the Israeli and the US militaries are using AI to accelerate decision-making, analyzing vast amounts of intelligence data for generating targets, and optimizing logistics, shifting toward AI-enabled command structures to maintain battlefield superiority. Almost all major US AI data center operators have signed contracts to provide AI tools and services to both the Pentagon and the IDF. This arrangement has not gone unnoticed by the Iranians who are…
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President Donald Trump joined Israel in yet another war of choice in the Middle East last week. Polls conducted in the United States immediately after the start of the Iran war show that the majority of Americans do not support it. A YouGov snap poll fielded Saturday — the day of the strikes — found 34% of Americans approve of the U.S. attacks on Iran, with 44%…
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