Thursday, 6th of December
Session begins at 14 pm
Russian Space Systems
Deputy Director on Science
Sixth technological paradigm in digital enterprise of space device engineering.
Over the past decade, the trend of changing the architecture of spacecraft and systems based on them from modular-functional construction to the developing of “systems on a printed circuit board”, and in the future “satellite-on-chip” with a wide use of “systems on the crystal "and" systems in the case.
A review of the achieved levels of technological readiness of the serially manufactured components of small-sized spacecrafts is presented: structural elements, orientation and stabilization systems, thermal control, power supply systems, on-board computers, memory, as well as the main problematic issues of developing promising products with low levels of technological readiness.
Astronomical science center
Deputy head of the center
Issues of tracking small spacecraft in high geocentric orbits by the ground monitoring systems in the context of space debris problematic.
The total number of objects of space debris is measured in tens of thousands and continues to grow. The most dangerous debris is in high near-earth orbits, where disturbing movements are small and objects can remain in orbit for hundreds of years. Ground-based telescopes can effectively track space debris objects, but there are no guarantees that they track all objects. Therefore the improvement of space debris monitoring equipment is an extremely important task. Recently, a new high-altitude telescope was launched in Chile with the help of which more than a hundred previously unobservable objects of space debris were found.
Tesat-Spacecom GmbH & Co. KG
Product Manager Laser Communication Systems
Laser Communication on CubeSats and SmallSats – current status.
With the increasing need for higher data rates on small LEO spacecraft, highly compact laser communication systems are required to overcome the limitations in the downlink channel. TESAT has a long heritage in optical communication and has expanded its portfolio in cooperation with the German Aerospace Center (DLR) towards small satellite communication solutions. The group of Optical Communication Systems (OCS) at the DLR is developing the OSIRIS (Optical Space Infrared Downlink System) technology for these systems.
CubeL DTE is the smallest commercial optical transmitter especially designed for operation in CubeSat platforms and can provide a data rate of up to 100Mbps. While the high performance TOSIRIS terminal addresses the small satellite platforms and can transmit 10Gbps from LEO orbit to ground. Both system support an optical back channel with up to 1Mbps. Furthermore DLR and TESAT are working on the availability of a sufficient optical ground station infrastructure.
An overview over the OSIRIS technology based systems for CubeSats and SmallSats and the status of the first demonstration missions planned for 2019 will be given.
Xi'an Jiaotong University
Deputy Dean of School of Aerospace Engineering,
Mechanically reconfigurable reflector for satellite antenna.
Usually the shaped beam is reflected by the shaped reflector of satellite to have desired coverage over a geographical areas on the earth. A mechanically reconfigurable space antenna is, thus, a combination of several shaped reflectors and could cover several service area during the orbit lifetime.
In this work, a mechanically reconfigurable antenna system was developed that has multiple arbitrary deformation modes. The reflector has a smooth surface that is mechanically adjusted by an actuator array. Verification of shape control of the reflector was demonstrated in experiments.
Institute of astronomy of RAS
Supervisor of the Institute
On prospects of small spacecrafts for observation and removal of space debris.
Small spacecrafts are (or should be) an essential part of any space situational awareness system. In particular, they are seen as an effective means of detecting and monitoring space debris, particularly in high orbits. Such devices may also be useful for developing a methodology and for implementing programmes to clean up near-earth space from hazardous space debris. In Russia, research on the development and use of such spacecrafts is relatively recent. Wet review several spacecraft projects proposed by Russian scientists and specialists in the field of space technology to improve the detection of hazardous space debris objects, as well as to reduce the risk of collision with the objects.
Is hyperspectrometry possible on micro- and nanosatellites.
The presentation touches upon determining the usefulness of hyperspectral information and lays out the technical requirements for a spaceborne hyperspectral camera that can acquire highly informative data. A conceptual design of such camera is presented.
The presentation further considers the requirements for a spacecraft that would be capable of carrying a hyperspectral camera onboard. Ultimately the presentation assess the possibility of micro- and nanosatellites including cubesats fulfilling these requirements.
Chief Analyst of the Non-Profit Partnership "GLONASS"
“Spaceborne internet” satellite systems: needs for construction and problems of implementation.
We analyze four plausible business models of “spaceborne internet” including tens of satellites, based on consumer’s value to be created and competitive advantages versus ground-based alternatives.
Four main barriers on multiple-satellite “spaceborne internet” systems construction are considered, including the demand for sharp decrease of spacecraft price and for international regulations on the use of space. We also consider four unique features of such systems, creating unprecedented opportunities for their developers and owners. A concept of “spaceborne internet” systems use is proposed, that provides diminishing expenses and risks, while preserving digital sovereignty.
The University of Manchester
Head of Aerospace Masters program
Reduced order analysis in design of active flow control.
The talk is devoted to a reduced order analysis in application to results of direct numerical simulation of a jet discharged into a laminar channel crossflow. Different approaches are considered to reduce the dimension of the problem by several orders of magnitude retaining an acceptable accuracy. The problem under consideration is related to the design of active flow control.
Keldysh Institute of Applied Mathematics
On Certain Dynamical Effects of Large Space Debris Rotational Motion.
There are many active debris removal (ADR) projects to stabilize or even reduce pollution of the near-Earth environment. However any planning of future ADR-missions is impossible without at least an approximate idea about the attitude dynamics of the candidate objects. On the base of the detailed mathematical model of rotational motion we establish general patterns in attitude dynamics of the large space debris objects. Our attention is mostly focused on the objects in Sun-synchronous orbits (SSO) with altitude range 600–800 km, where the density of space debris is maximal. It turns out that there is an interesting analogy with the rotational motion of natural celestial bodies, which follow so-called Cassini spin states.
Deputy head on science
Designing rocket and space technology using supercomputer modeling.
In the design of rocket and space technology, it is important to work out various engineering solutions before embodying them in metal. A large number of tasks are almost impossible to solve experimentally, for example, the tasks of landing a spacecraft with the braking motors on the water, resetting the fairings and turning on the emergency rescue system, dropping the cover of the parachute container. The use of numerical simulation methods with the use of high-performance equipment allows us to solve these problems at the first stage of the preliminary design of the product and allows not only to reduce the design time of products but also significantly reduce the cost of the design and the product itself.
This report provides solutions to a wide range of aerospace engineering design problems using the FlowVision computational fluid dynamics software package.