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ЦитироватьBuoyed by PSLV-C34 success, ISRO units set for next mission by August
Laxmi Ajai Prasanna (http://timesofindia.indiatimes.com/toireporter/author-Laxmi-Ajai-Prasanna-479221634.cms) | TNN | Jun 22, 2016, 10.51 PM IST

THIRUVANANTHAPURAM: Soon after Indian Space Research Organisation (ISRO)'s successful mission of PSLV-C34 from Satish Dhawan Space Centre (SDSC) at Sriharikota on Wednesday that placed all the 20 satellites at one go, the heads of ISRO units including SDSC and Vikram Sarabhai Space Centre (VSSC) indicate that the entire team is now focussed on their next mission of PSLV-C35 launch planned for August.
 
"A review meet will be convened by ISRO chairman AS Kiran Kumar soon to finalise on further missions including GSLV-Mark III and the demo project of Air Breathing Propulsion System (ABPS) for advanced space missions. Now with this milestone of 20 satellites launch in a single mission and its successful restart exercise of the fourth-stage engine PS4, it offers the required start for the next mission of PSLV-C35 planned in August first week for launch of two satellites in different orbits," SDSC director P Kunhikrishnan told TOI.

Strikingly, VSSC director K Sivan told TOI that, "all the 20 satellites injected into the orbit on board PSLV-C34 are being tracked and are in control. The rocket's fourth stage PS4 propellant engine demonstrated two complex tasks, 50 minutes after the satellites were injected into the orbit. The engine was cut off for 30 seconds and then re-ignited. It offers more poise for the next mission of PSLV- C35 to launch satellites in two different orbits".

ЦитироватьISRO gears up for multi-orbit record              
DECCAN CHRONICLE. | PATHRI RAJASEKHAR (http://www.deccanchronicle.com/byline/pathri-rajasekhar)

Published Jun 23, 2016, 2:05 am IST
       
Using the PSLV-C35 for the first time, Isro will place the SLATSAT and two satellites of Algeria-AlSat-2 - in different orbits.

 ISRO believes that this will give a choice to its national and international customers interested in placing their satellites in different orbits in a single mission.                      

Nellore: ISRO will be launching satellites in different orbits in its forthcoming mission using the PSLV-C35 for the first time.
The rocket will place the SLATSAT and two satellites of Algeria-AlSat-2 - in different orbits. Two satellites of Indian universities will also be launched in the mission.
As part of the preparations for the multi-orbit launch, scientists restarted the PSLV-C34 after it injected all the satellites into orbit for Wednesday's mission.
A similar experiment was successfully carried out sometime back with the PSLV-C29. ISRO believes that this will give a choice to its national and international customers interested in placing their satellites in different orbits in a single mission.
In fact, injecting 20 satellites for Wednesday's mission was a challenge as the primary satellite, Cart-osat, had to be injected in a sun synchronous orbit and the other 19 small satellites had to be ejected, ensuring a safe distances between each other.   

ЦитироватьVikram Sarabhai Space Centre (VSSC) director K. Sivan said that Isro will also be launching ScatSat - a weather monitoring and forecasting satellite - with polar satellite launch vehicle (PSLV).

Talking to reporters on the sidelines of the event, he said that the Indian satellite will be a co-passenger to an Algerian satellite.

"Both the satellites will be put into different orbits. So the fourth stage/engine of the rocket will be switched off after ejecting ScatSat first. Then after a gap of around 30 minutes, the engine will be switched on and put the Algerian satellite into its intended orbit," Sivan said.

ЦитироватьISRO Chairman says GSLV-F05 on September 8 and PSLV-C35 on September 26
http://www.thehindu.com/sci-tech/airbreather-propulsion-test-on-aug-28-isro/article9027578.ece

ЦитироватьISRO is set to launch eight satellites on board PSLV C35 on Sept 28. It includes three Indian satellites led by ScatSat-1 for weather forecast and cyclone prediction.

ЦитироватьWednesday, September 7, 2016    
Pratham student satellite

The Pratham satellite, built by students at the Indian Institute of Technology Bombay, is expected to launch on the Indian PSLV-C35 currently planned for September 26

Pratham, a 300x300x300mm satellite with a mass of 10 kg, aims to measure total electron count in a 800 km altitude Sun Synchronous Orbit (SSO).

Aayush Yadav of the Pratham team writes:

We, students of IIT Bombay, are glad to inform you that our project, Pratham, is ready and expected to launch with PSLV-C35 in the last week of September. We would be really happy if  you all joined us in receiving our satellite's beacon, details given below:

35 WPM CW Beacon on 145.980 MHz

1200 bps FSK Beacon on 437.455 MHz (To be switched on over France and India only)

We will update the information as soon as TLE's will be available.

Kind Regards.
Team Pratham

Further information at
http://www.aero.iitb.ac.in/pratham/
https://www.facebook.com/iitb.student.satellite/

ЦитироватьSCATSAT 1 (http://space.skyrocket.de/doc_sdat/scatsat-1.htm)___EOS___370kg___India
AlSat 1B (http://space.skyrocket.de/doc_sdat/alsat-1b.htm)______EOS___110kg___Algeria
AlSat 2B (http://space.skyrocket.de/doc_sdat/alsat-2.htm)___EOS___116?kg___Algeria
BlackSky Pathfinder 1 (http://space.skyrocket.de/doc_sdat/blacksky.htm)___EOS___~50 kg___USA
Pratham (http://space.skyrocket.de/doc_sdat/pratham.htm)___Tech,EOS___26cm(30?cm) cube___10kg___India
PISat (http://space.skyrocket.de/doc_sdat/pisat.htm)_____Tech,EOS___25×26×18cm___5.3 kg___India
AlSat-Nano (AlSat 1N) (http://space.skyrocket.de/doc_sdat/alsat-nano.htm)___Tech___3U__4kg___Algeria, UK
665kg = total
* EOS = Earth observation sat, Tech = Technology

ЦитироватьSCATSAT 1 (http://space.skyrocket.de/doc_sdat/scatsat-1.htm)___EOS___370kg___India 
AlSat 1B (http://space.skyrocket.de/doc_sdat/alsat-1b.htm)______EOS___110kg___Algeria 
AlSat 2B (http://space.skyrocket.de/doc_sdat/alsat-2.htm)______EOS___116?kg___Algeria 
AlSat-Nano (AlSat 1N) (http://space.skyrocket.de/doc_sdat/alsat-nano.htm)___Tech___3U__4kg___Algeria, UK
BlackSky Pathfinder 1 (http://space.skyrocket.de/doc_sdat/blacksky.htm)___EOS___~50 kg___USA 
Pratham (http://space.skyrocket.de/doc_sdat/pratham.htm)___Tech,EOS___26cm(30?cm) cube___10kg___India 
PISat (http://space.skyrocket.de/doc_sdat/pisat.htm)_____Tech,EOS___25×26×18cm___5.3 kg___India 
CanX 7 (http://space.skyrocket.de/doc_sdat/canx-7.htm)____Tech_______3U___5kg?___Canada___(deployable drag sail)

~670kg = total 

* EOS = Earth observation sat, Tech = Technology

ЦитироватьIIT-B's feat: Mumbai's first satellite to lift off on September 26
Srinivas Laxman (http://timesofindia.indiatimes.com/toireporter/author-Srinivas-Laxman-7501.cms) | TNN | Sep 15, 2016, 12.35 AM IST
(https://img.novosti-kosmonavtiki.ru/221356.jpg)

 MUMBAI: IIT Bombay (http://timesofindia.indiatimes.com/topic/IIT-Bombay)'s first student satellite, Pratham+ , will be launched on September 26 from the Satish Dhawan Space Centre (http://timesofindia.indiatimes.com/topic/Satish-Dhawan-Space-Centre), Sriharikota (http://timesofindia.indiatimes.com/topic/Sriharikota). The nearly-10kg Pratham, which is also Mumbai's first satellite, will launch aboard the highly-proven Polar Satellite Launch Vehicle (PSLV) at 9.30 am.
 
 Pratham's main role will be to measure what is known as the total electron count in the ionosphere. It has a four-month mission span and will operate at an altitude of 720 km in the sun-synchronous orbit.
 
 Prof Hemendra Arya of the aerospace engineering department who is mentoring the Pratham team said the satellite's integration with the rocket is expected to begin a week prior to the lift-off. "We have received a message from Isro (http://timesofindia.indiatimes.com/topic/Isro) that the launch is on September 26. If it is rescheduled on account of weather factors or any other reason, it will be postponed only by a day or so," he said.
 
 Isro officials confirmed that the lift off will be on September 26 and that the preparations are in full swing. Wishing the IIT students the best, ISRO Satellite Centre director Mylswamy Annadurai (http://timesofindia.indiatimes.com/topic/Mylswamy-Annadurai) said in a Facebook post: "Today 11 Sep is a special day in many ways for many people. Today In ISRO satellite centre, it is flagging off a vehicle carrying two student satellites PRADHAM(IIT-B) & PISAT(PESIT)."
 
 Pratham and six other satellites will piggyback on PSLV along with the main Isro weather satellite, ScatSat. Prior to being sent to Sriharikota, the satellites have undergone rigorous tests at the satellite centre.

 On Sunday, Pratham and Pisat, another student satellite from Bengalaru, were flagged off to Sriharikota from the Isro Satellite Centre in Bengaluru in a single car.
 
 The students have said that they are planning an event on the IIT campus on the launch day. With the launch day nearing, parents of the students are also getting involved. One of them has posted on Pratham's Facebook page: "All the best. Lot of efforts. Proud of you all." Thanking the parent, the students replied: "All because of blessings and support of all parents."

Цитировать

PSLV-C35 / SCATSAT-1

PSLV-C35

India's Polar Satellite Launch Vehicle, in its thirty-seventh flight (PSLV-C35), will launch the 377 kg SCATSAT-1 for ocean and weather related studies and seven co-passenger satellites into polar Sun Synchronous Orbit (SSO). Co-passenger satellites are from Algeria, Canada and USA as well as two satellites from Indian Universities/ Academic Institute.

SCATSAT-1 will be placed into a 720 km Polar SSO whereas; the two Universities/ Academic Institute Satellites and the five foreign satellites will be placed into a 670 km polar orbit. This is the first mission of PSLV in which it will be launching its payloads into two different orbits.

PSLV-C35 will be launched from the First Launch Pad (FLP) of Satish Dhawan Space Centre (SDSC) SHAR, Sriharikota. It will be the fifteenth flight of PSLV in 'XL' configuration (with the use of solid strap-on motors).

The  PSLV-C35  is scheduled to be launched on Monday morning at 9:12 hrs (IST) on September 26, 2016 from SDSC SHAR , Sriharikota. 

Цитироватьvogel пишет:
PSLV-C35 will be launched from the First Launch Pad (FLP) of Satish Dhawan Space Centre (SDSC) SHAR, Sriharikota. It will be the fifteenth flight of PSLV in 'XL' configuration (with the use of solid strap-on motors).

ЦитироватьPirat5 пишет:
Пишут (http://forum.nasaspaceflight.com/index.php?topic=1173.1300) , что PSLV не XL, а G3-версии. меньшая грузоподъёмность
                 

Цитироватьvogel пишет:
Откуда информация про G3?

ЦитироватьБезумный Шляпник пишет:
ТТУ короткие S-9 (у модификации "XL" ТТУ более длинные S-12)

ЦитироватьPeter B. de Selding ‏@pbdes  (https://twitter.com/pbdes) 3 hours ago (https://twitter.com/pbdes/status/780306661378523136)

Smallsat builder SSTL says Alsat-1B Earth obs sat (12m GSD in B&W), for Algerian govt (AIT in Algeria) healthy in orbit after PSLV release. Peter B. de Selding ‏@pbdes  (https://twitter.com/pbdes) 1h (https://twitter.com/pbdes/status/780339521816764416)

Цитировать1 hour ago (https://twitter.com/pbdes/status/780339521816764416)

BlackSky confirms telemetry from Pathfinder-1 satellite following release from PSLV rocket. A tech demo for future 60-sat constellation.

ЦитироватьJonathan McDowell ‏@planet4589  (https://twitter.com/planet4589) 33 minutes ago (https://twitter.com/planet4589/status/780401072133267456)

All the sats from yesterday's PSLV launch now cataloged. SCATSAT in 717 x 734 km orbit, rest in 660 x 700 km.

ЦитироватьCanX-7, a 3.5kg, 10x10x34cm nanosatellite, was successfully launched on PSLV-C35 from India this morning. The satellite was contacted and found healthy during its first pass over Toronto several hours later. CanX-7 carries an Automatic Dependent Surveillance – Broadcast (ADS-B) receiver to detect and track aircraft from low Earth orbit. The ADS-B receiver was built by the Royal Military College of Canada, and adapted for integration with CanX-7 by SFL. SFL has built and launched several ship tracking missions for various customers around the world, and the success of CanX-7 will enable SFL to expand its offerings to aircraft tracking applications.

The satellite also houses four square meters of deployable drag sail in four modules that will demonstrate accelerated deorbiting. The sails accelerate the orbital decay rate of the satellite by using atmospheric drag. The ballistic coefficient of the satellite is reduced by increasing drag area which results in earlier re-entry.

"This is a milestone for Canada, in launching deployable drag sail technology developed at home," says Robert Zee, Director, SFL, "Obtaining space heritage for these drag sails will open the door to including them on future nanosatellite and microsatellite missions to comply with IADC debris mitigation guidelines. Without such technology, higher altitude satellites may not return to Earth for hundreds of years."The Inter-Agency Space Debris Coordination Committee (IADC), comprised of members from international space agencies, published guidelines in 2007 on what measures were needed to mitigate a growing orbital debris problem. Canada, among other space-faring nations, has effectively been enforcing the IADC's recommended 25-year end-of-life deorbiting requirement for satellites in low Earth orbit. "The availability of SFL's drag sail technology for future missions will ensure that those missions will proceed unfettered by regulatory requirements, and will act responsibly in the global effort to declutter Earth orbit," says Zee.
Commissioning of CanX-7 will continue into October. Following this, the ADS-B aircraft tracking receiver will be tested over a six-month period. Upon completion of the ADS-B demonstration, CanX-7's four drag sails will be deployed one at a time, while being monitored by on-board cameras. The deorbiting progress will then be observed over the course of several years.

ЦитироватьHello beautiful! Our first pictures from Pathfinder-1 represent complete mission success
By Jason Andrews, CEO
 November 14, 2016 (https://www.blacksky.com/2016/11/)

Why is it that "your first" seems more beautiful than you ever could've imagined? Your first car, your first apartment, your first child? It has to be the anticipation of the moment, the hard work you put in, and the big milestone you've achieved. It makes it that much better, that much more beautiful to behold.
That's what we're feeling here at Spaceflight Industries when we look at the first wave of pictures we've taken from BlackSky's Pathfinder-1. We're in awe of their beauty. They've been flowing in over the last few weeks, and we couldn't be more excited to share them with you.
Here are a few of our early favorites:
(https://img.novosti-kosmonavtiki.ru/130451.jpg) (https://blacksky-89a.kxcdn.com/wp-content/uploads/2016/11/6E9E_Desert_Mountains_processed_01_small1.jpg)
Mountains, Kandahar, Afghanistan

(https://img.novosti-kosmonavtiki.ru/130453.jpg) (https://blacksky-89a.kxcdn.com/wp-content/uploads/2016/11/7860_Mountain_processed_01_small.jpg)
Desert Mountain, Bayingolin, China

(https://img.novosti-kosmonavtiki.ru/130452.jpg) (https://blacksky-89a.kxcdn.com/wp-content/uploads/2016/11/7852_Tokyo_processed_01_small.jpg)
Toyko Suburbs, Toyko, Japan

These pictures are from our Pathfinder series of spacecraft.  This first satellite demonstrates our ability to perform change detection and monitoring at a relevant scale. Airplanes, boats, shipping containers, trucks and cars are all easily detected in the initial imagery. As we continue to calibrate the system our images will become even sharper.

Now for some details.
Pathfinder-1 is currently operating in a 690 km circular orbit because it was launched as a rideshare spacecraft. Our BlackSky constellation will operate at 450 km providing 1-meter resolution. This means our resolution will be nearly twice as good as what you are seeing in these pictures. To prove this point – pull out your phone and stand seven feet from an object and take a picture. Now move forward one giant step – 2.5 feet – and take another. Do things look closer?
Even at this altitude we are pleased with the detail and performance, which validates our ability to look at major drivers of our economy. Each image has millions of pixels in them and captures an area that is 10 km across. Exploring the planet this way is a powerful thing. 

Since we first launched Pathfinder-1 about a month ago, we've confirmed our entire space and ground architectures are operational. We are now in the process of transitioning to fully automated mission operations. As we move forward and refine our space and ground systems, we are executing demonstrations that highlight the ability of the constellation to deliver imagery to customers with unprecedented timeliness. 

ЦитироватьWe are still very early in our spacecraft mission and there is a lot more to learn and improve on from a performance standpoint. But to be clear, these pictures represent mission success.

As a final reflection, often times we move too fast and don't take the time to reflect on our accomplishments. With these pictures, we're doing just that. Stepping back and enjoying "total mission success" – Hello beautiful!
PS: Stay tuned, we will release more images on our Twitter handle (@Blacksky_Inc) very soon – be sure to follow us.