How many spacecraft can you fit in a Dnepr?

Thursday, May 22. 2008
Launch updates

Fit check in progress showing 2 RapidEye spaceraft.
This may sound like a familiar joke - but for the 5 RapidEye spacecraft built by SSTL a fit-check is an important preparation before the ultimate launch. The SSTL and MDA (the prime) launch teams visited the KB Yuznoye works at Dnepropetrovsk, April 14th – 18th, to conduct a spacecraft fit-check with the Dnepr launch vehicle.

Fit-check is an important event in the launch schedule as its purpose is to technically clear the way for successful integration of the flight spacecraft at the Cosmodrome.

The fit-check established that all the physical interfaces between the spacecraft and the launch vehicle were correct. During meetings, the launch teams were able to qualify the actual route of integration – an especially important activity when, as in this case, five spacecraft are being launched on a single launch vehicle.

So the answer, dear Space Blog reader is 5 - or at least 5 RapidEye spacecraft.

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Next generation DMC satellites for 2008 launch

Tuesday, October 9. 2007
Launch updates

SSTL is to launch two new enhanced Disaster Monitoring Constellation (DMC) satellites in the fourth quarter of 2008. Deimos-1, which was built for Deimos SL (Spain) and SSTL’s UK-DMC2 will be launched onboard a Dnepr rocket from the new Kosmotras launch site in southern Ural.

DEIMOS-1 will provide higher resolution imagery
Both Demios-1 and UK-DMC2 will carry an enhanced version of the DMC wide area imaging system, providing 600km wide swaths of the Earth in three spectral bands at a ground resolution of 22-metres. This is an advance on the current 32-metre DMC imager, which has been successfully providing imagery for over five years in the current constellation of five spacecraft. Additionally, the new spacecraft have over ten times the capacity for information provision. These significant enhancements reflect SSTL’s evolutionary approach to development that provides state of the art performance with minimal risk. The improved resolution and capacity enable the system to better meet European Global Monitoring for Environment and Security program needs, particularly in the areas of forestry and fire.

UK-DMC2 has been funded and developed by SSTL to continue the success of DMC International Imaging (DMCii), which commercially exploits the data and help ensure continuity of the unique service provided by the constellation of DMC satellites for disaster relief and humanitarian aid.

The launch contract has been signed with ISC Kosmotras, with Commercial Space Technologies (CST) acting as the interface between SSTL and the launch agency.

Deimos Imaging (DMI) is part of the Deimos Space Group, and is based in the Boecillo Technology Park, Madrid. DMI is led by the Spanish astronaut Pedro Duque and aims at offering products based on satellite-captured information for use in Earth observation applications. One of the most notable aspects of DMI is the vertical integration of the production chain, which includes its own capture capability through the Deimos-1 satellite, as well as a remote sensing laboratory boasting a high R&D&I capacity.

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Payload testing update

Wednesday, January 11. 2006
Launch updates

Yesterday, the payload clocks were tested. They lock to the required frequency and work correctly.

Today is the first switch-on of the RF transmission system of the payload, which will send the first Galileo navigation signals to the ground.

There will be more updates tomorrow.

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Real GIOVE-A mission commencing imminently

Tuesday, January 10. 2006
Launch updates

The main objective of GIOVE-A is to secure the frequency filing for the Galileo satellite navigation system with the ITU (International Telecommunication Union), which is fundamental to the operation of the Galileo project and a crucial first stage in the development schedule.

The payload will be switched on today (Tuesday 10th) or tomorrow so that the first of the two frequency bands can be tested. SSTL are running on schedule, so the operators have a few days spare time if required before the planned payload start.

The payload is operated as a single unit that will start transmitting the various signals at about the same time.

The ITU rules dictate that once the satellite is transmitting, there cannot be a break in transmission for more than 4 months. For this reason, the GIOVE-B satellite will provide a back-up system once launched to ensure that these crucial frequencies are secured.

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