SCATSat 1, AlSat 1B, Alsat-2B, AlSat-1N, BlackSky Pathfinder 1, Pratham, PISAT, CanX-7 – PSLV-C35 – Шрихарикота – 26.09.2016

[che wi]

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

Кроме того, на бустерах у модификации "XL" пишут PSOMXL, а у C35 указано PSOM.

[che wi]

Началось отделение оставшихся 7-ми КА.

[che wi]

Все КА отделились, поздравления индусам!

[Димитър]

Поздравляю!

[azeast]

Мои поздравления!

[che wi]

Peter B. de Selding ‏@pbdes  3 hours ago

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  1h

1 hour ago

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

[che wi]

Jonathan McDowell ‏@planet4589  33 minutes ago

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

[Безумный Шляпник]

10 объектов: 2016-059A...K, 41783...41792
По логике - 8 спутников, ступень и адаптер. Похоже, что на данный момент SCATSAT - это объект H (41790).

[Безумный Шляпник]

PSLV-C35 Successfully Launches Eight Satellites into Two Different Orbits in a Single Flight

Спойлер

In its thirty seventh flight (PSLV-C35), ISRO's Polar Satellite Launch Vehicle successfully launched the 371 kg SCATSAT-1 Satellite along with seven co-passenger satellites today morning (September 26, 2016) from Satish Dhawan Space Centre SHAR, Sriharikota. This is the thirty sixth consecutively successful mission of PSLV.  The total weight of all the eight satellites carried on-board PSLV-C35 was 675 kg. PSLV-C35 is the first PSLV mission to launch satellites carried onboard into two different  orbits. This PSLV mission was the longest of the PSLV missions conducted till date and was completed in 2 hours 15 minutes and 33 seconds after lift-off.
After PSLV-C35 lift-off at 0912 hrs (9:12 am) IST from the First Launch Pad with the ignition of the first stage, the subsequent important flight events, namely, strap-on ignitions and separations, first stage separation, second stage ignition, payload fairing separation, second stage separation, third stage ignition and separation, fourth stage ignition and cut-off, took place as planned. After a flight of 16 minutes 56 seconds, the vehicle achieved a polar Sun Synchronous Orbit of 724 km inclined at an angle of 98.1 degree to the equator (very close to the intended orbit) and 37 seconds later the primary satellite SCATSAT-1 was separated from the PSLV fourth stage.
After separation, the two solar arrays of SCATSAT-1 satellite were deployed automatically and ISRO's Telemetry, Tracking and Command Network (ISTRAC) at Bangalore took over the control of the satellite. In the coming days, the satellite will be brought to its final operational configuration following which it will begin to provide weather related services using its scatterometer payload.  The data sent by SCATSAT-1 satellite will help provide weather forecasting services to user communities through the generation of wind vector products as well as cyclone detection and tracking. 
After the successful separation of SCATSAT-1, the PSLV-C35 mission continued. Still carrying the seven co-passenger satellites, the fourth stage of PSLV coasted over the South polar region and then started ascending towards the Northern hemisphere. A safe distance between the orbiting SCATSAT-1 and PSLV-C35 fourth stage was maintained by suitably manoeuvring the stage. 
At 1 hour 22 minutes and 38 seconds after lift-off as the fourth stage was in the North polar region, the two engines of PSLV fourth stage were reignited and fired for 20 seconds. As a result of this, it entered into an elliptical orbit measuring 725 km on one side of the Earth and 670 km on the other.    
And 50 minutes later, as the PSLV fourth stage was again coasting near the south pole, its engines were fired for another 20 seconds. This second firing made the fourth stage to enter into a circular orbit of 669 km height inclined at an angle of 98.2 degree to the equator. 
37 seconds later, the Dual Launch Adapter was successfully separated from the PSLV-C35 fourth stage. 30 seconds after this event, ALSAT-1N was the first co-passenger satellite to be separated successfully. Following this, the NLS-19, PRATHAM, PISAT, ALSAT-1B, ALSAT-2B, and Pathfinder-1 were separated from the PSLV fourth stage in a predetermined sequence thereby successfully completing PSLV-C35 mission. 
Of the seven co-passenger satellites carried by PSLV-C35, two – PRATHAM weighing 10 kg and PISAT weighing 5.25 kg – are University/Academic institute satellites and were built with the involvement of students from IIT-Bombay and PES University, Bangalore and its consortium, respectively.
The remaining five co-passenger satellites were international customer satellites from Algeria (three – ALSAT-1B, ALSAT-2B and ALSAT-1N), Canada (one- NLS-19) and the United States (one – Pathfinder-1). 
With today's launch, the PSLV's capability to launch satellites into two different orbits has been successfully demonstrated. The total number of satellites launched by India's workhorse launch vehicle PSLV has now reached 121, of which 42 are Indian and the remaining 79 are from abroad.

[свернуть]

[Безумный Шляпник]

CanX-7 Aircraft Tracking and Deorbiting Demo Satellite Launched, Contacted, and Healthy

CanX-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.

[Salo]

https://www.blacksky.com/2016/11/14/hello-beautiful-first-pictures-pathfinder-1-represent-complete-mission-success/

Hello beautiful! Our first pictures from Pathfinder-1 represent complete mission success
By Jason Andrews, CEO
 November 14, 2016

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:

Mountains, Kandahar, Afghanistan


Desert Mountain, Bayingolin, China


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. 

We 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.