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DES IG N G U IDE

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QU ICK START

Zoom in and out As you work on your poster zoom in and out to the level that is

more comfortable to you. Go to VIEW > ZOOM.

Title, Authors, and Affiliations Start designing your poster by adding the title, the names of the authors, and the

affiliated institutions. You can type or paste text into the provided boxes. The

template will automatically adjust the size of your text to fit the title box. You

can manually override this feature and change the size of your text.

TIP: The font size of your title should be bigger than your name(s) and institution

name(s).

Adding Logos / Seals Most often, logos are added on each side of the title. You can insert a logo by

dragging and dropping it from your desktop, copy and paste or by going to INSERT

> PICTURES. Logos taken from web sites are likely to be low quality when printed.

Zoom it at 100% to see what the logo will look like on the final poster and make

any necessary adjustments.

TIP: See if your school’s logo is available on our free poster templates page.

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or by going to INSERT > PICTURES. Resize images proportionally by holding down

the SHIFT key and dragging one of the corner handles. For a professional-looking

poster, do not distort your images by enlarging them disproportionally.

Image Quality Check Zoom in and look at your images at 100% magnification. If they look good they will

print well.

ORIGINAL DISTORTED Corner handles

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od

pri

nti

ng

qu

alit

y

Bad

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QU ICK START ( con t . )

How to change the template color theme You can easily change the color theme of your poster by going to the DESIGN

menu, click on COLORS, and choose the color theme of your choice. You can also

create your own color theme.

You can also manually change the color of your background by going to VIEW >

SLIDE MASTER. After you finish working on the master be sure to go to VIEW >

NORMAL to continue working on your poster.

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placeholders for headers and text blocks. You can add

more blocks by copying and pasting the existing ones or

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The default template text offers a good starting point. Follow the conference

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click on TABLE. A drop-down box will help you select rows and

columns. You can also copy and a paste a table from Word or

another PowerPoint document. A pasted table may need to be re-

formatted by RIGHT-CLICK > FORMAT SHAPE, TEXT BOX, Margins.

Graphs / Charts You can simply copy and paste charts and graphs from Excel or Word. Some

reformatting may be required depending on how the original document has been

created.

How to change the column configuration RIGHT-CLICK on the poster background and select LAYOUT to see the column

options available for this template. The poster columns can also be customized on

the Master. VIEW > MASTER.

How to remove the info bars If you are working in PowerPoint for Windows and have finished your poster, save

as PDF and the bars will not be included. You can also delete them by going to

VIEW > MASTER. On the Mac adjust the Page-Setup to match the Page-Setup in

PowerPoint before you create a PDF. You can also delete them from the Slide

Master.

Save your work Save your template as a PowerPoint document. For printing, save as PowerPoint or

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Quantum Communication

Satellite

QCS Quantum Communication

Satellite

QCS Mission Delivering encrypted quantum communication keys between two different ground stations through a constellation of satellites covering latitudes of ±70°, in a transition time of less than 15 minutes, so that each ground station will be able to transfer information each 15 minutes.

Orbit Design The orbit design team developed an optimal LEO constellation consisting of 80 satellites in 10 orbit planes: 80/8/3 Walker pattern with the orbit parameters: 𝒆 = 𝟎, 𝒂 = 𝟔𝟗𝟕𝟖. 𝟏𝟒 𝒌𝒎 , 𝒊 = 𝟔𝟓° Additionally , deployment maneuvers for each orbit plane were planned using a Hohmann transfer orbits. The entire deployment time is 𝚫𝑻 = 𝟐𝟖 𝒅𝒂𝒚𝒔 and requires

𝚫𝑽 = 𝟓. 𝟒𝟐 𝒎

𝒔 per satellite, and also stationkeepin

g maneuvers to avoid constellation breakup using a control box pulse each 0.5 [km] of

decay from the desired orbit. These maneuvers requires 𝚫𝑽 = 𝟐. 𝟐𝟕 𝒎

𝒔 per satellite.

Structure and Thermal Design The structure and thermal design team designed a CubeSat concept satellite of 20U size, with mass of 22 [kg ] carrying the payload (quantum communication camera) along with bus systems and propulsion block. Using SolidWorks simulation tool the structure has been tested to withstand possible static and dynamic loads during the launch. Thermal design is based on passive control. By using multilayer insulation materials and proper radiation protection it was achieved that temperature inside the satellite remains above 0 °𝐶 and less than 40 °𝐶 along the whole orbit period. Structure and internal layout Thermal analysis

Attitude Determination & Control System The ADCS team wrote a full 6DOF simulation of a satellite in orbit which included various disturbance torques, magnetic and solar physical models, sensor and actuator error models and also numerous ground stations and satellites. A comprehensive state machine was designed and implemented in order to fulfill all maneuverability mission requirements, along with the implementation of suitable controllers and estimators. The appropriate sensors and actuators were selected and modelled and complete mission scenario, which included the various communication and maintenance command modes, was run and completed successfully.

Mission Scenario Command Modes Mission Scenario Pointing Accuracies

Constellation pattern Control box

Reliability

RBD and redundancy: The mode “QKD Pointing” is presented below in RBD form. It

exhibits redundancies in the reaction wheel, the star tracker, and in the battery:

𝑅𝑄𝑃 = 0.9771

Satellite Reliability: This reliability will include communication modes, due to the superior importance of the communication in our mission. 𝑅𝑡𝑟𝑎𝑛𝑠𝑓𝑒𝑟𝑟𝑖𝑛𝑔 𝑆𝑎𝑡. = 0.9293 𝑅𝑟𝑒𝑐𝑒𝑖𝑣𝑖𝑛𝑔 𝑆𝑎𝑡. = 0.9419

The satellite's reliability numbers are sufficient for feasible performance.

Space Environment: Understand the space environment phenomena at LEO orbits and monitor the spacecraft through these phenomena to prevent degradation and decomposition. Radiation in space mainly effects electrical components, and there's a need to cover these components with a thin shielding layer of aluminum. 10Krad is the radiation dose that most of the electrical components can withstand. For safety measures, we used a safety factor and received 2mm optimal aluminum layer thickness. The following table summarize all materials used in the satellite that can be damaged by atomic oxygen flux or by vacuum: From the table we can infer that all materials shall withstand the atomic oxygen flux in orbit. In addition, all the materials used in the satellite sub-systems are resilient to the outgassing effects (all under the test values), and are eligible for use in space.

Power System The power system produces and manages electrical power, and distributes it to the satellite components The system includes solar panels for power production, batteries for power storage, and a power conditioning and distribution unit A simulation enables an analysis of the system operation at different mission scenarios Power production by solar panels for a typical mission scenario

0 1000 2000 3000 4000 5000 6000 7000 80000

20

40

60

80Solar Panel Power Production vs. Time

Time [sec]

Po

we

r P

ro

du

ctio

n [W

]

Propulsion A cold gas propulsion system used for deployment, orbit transfers and disposal. The system is composed of 2 propellant tanks, 4 thrusters and control valves, with Krypton used as a propellant Thrust: 0.1 [N] Total velocity change: 14.7 [m/sec]

3D model of the propulsion system

Communication

The communication system is responsible on transferring important data such as: Tracking & Telemetry, Command, and Inter satellite communication. The system supports Satellite to Satellite and Ground to Satellite (and vice versa) communication. Furthermore, The system has been designed to transfer encrypted data in an above atmosphere path to minimize the possibility of eavesdropping. A Link budget simulation have been designed in order to test and simulate different communication scenarios with different communication components.

0 1000 2000 3000 4000 5000 6000 7000 80000

500

1000

1500

2000

2500

3000

X: 3452

Y: 1121

Ground Station distance

Dis

tance [

km

]

Time [sec]

0 1000 2000 3000 4000 5000 6000 7000 80000

0.2

0.4

0.6

0.8

1

X: 3452

Y: 0

Time [sec]

Lin

k

Satellite Cmmunication

0 = Not Established

1 = Established

0 1000 2000 3000 4000 5000 6000 7000 80000

500

1000

1500

2000

2500

3000

X: 3452

Y: 1121

Ground Station distance

Dis

tance [

km

]

Time [sec]

0 1000 2000 3000 4000 5000 6000 7000 80000

0.2

0.4

0.6

0.8

1

X: 3452

Y: 0

Time [sec]

Lin

k

Satellite Cmmunication

0 = Not Established

1 = Established

Launcher

Launch Vehicle

Number of launches (per year)

Multi-Payload Capacity

Cost (in Million $)

Dnper-1 2 ----------- 0.16 Vega 2 2 0.62

LancherOne 3 6 3 Electron 11 4 7.7 Bloostar 4 3 3.6

Total Cost: 15.08M$

The final Launch Plan

Launch

Vehicle

Advantages

Vega &

Dnepr-1

Effective cost considerations,

Have high reliability,

Tested and fully informative.

Launcher

One,

Bloostar

&

Electron

Very good multi-payload

capacity,

High availability (Electron) and

terms of launch (Bloostar,

LauncherOne)