No Slide Title · for Fluid Dynamics QB50 – Schedule Schedule for selected CubeSats Sep-Dec 2010...
Transcript of No Slide Title · for Fluid Dynamics QB50 – Schedule Schedule for selected CubeSats Sep-Dec 2010...
von Karman Institute for Fluid Dynamics
J. Muylaert, R. Reinhard, C. Asma, J-M Buchlin, P. Rambaud, R. Vetrano
QB50
An international network of 50 double CubeSats for multi-point, in-situ,
long-duration (3 months) measurements in the lower
thermosphere (90 - 300 km) and for re-entry research
von Karman Institute for Fluid Dynamics
QB50 – Studying Lower Thermosphere
•The least explored layer of the atmosphere
•Stratospheric balloons go up to 42 km max.
•Remote-sensing by ground based lidarsand radars up to 105 km.
•Remote-sensing by Earth observation satellites in higher orbits (600 – 800 km) mainly observe constituents in the troposphere, stratosphere and mesosphere (lower thermosphere is too rarefied).
•In-situ measurements by sounding rockets in the mesosphere and lower thermosphere (MLT Region) provide only occasional (a few times per year) single point measurements
90 – 300 km: Why Lower Thermosphere?
von Karman Institute for Fluid Dynamics
QB50 - THE IDEA
•A network of 50 double CubeSats
•Initial altitude: 300 km (circular orbit, i=79°)
•Initial separation: 200 – 300 km between CubeSats
•Total network size: 10,000 – 15,000 km (or more if desirable)
•Each performing in-situ measurements of atmospheric parameters
•Atmospheric data providing temporal and spatial variations
•All layers of the lower thermosphere from 300 km down to 90 km will be explored without the need for on-board propulsion (orbital decay due to atmospheric drag)
•Downlink using the Global Educational Network for Satellite Operations (GENSO)
•Mission duration: 3 months
von Karman Institute for Fluid Dynamics
QB50 – Studying Lower Thermosphere
A network of 50 CubeSats in the lower thermosphere compared to networks in higher orbits has the following advantages:
•The lifetime of a CubeSat in the envisaged low-Earth orbit will only be three months, i.e. much less than the 25 years stipulated by international requirements related to space debris
•A low Earth orbit allows high data rates because of the short communication distances involved
•In their low Earth orbits, the CubeSats will be below the Earth’s radiation belts, which is very important because CubeSats use low-cost Commercial-Off-The-Shelf (COTS) components
Advantages of a CubeSat Network
von Karman Institute for Fluid Dynamics
QB50 CubeSat TechnologyA single CubeSat is:
•Miniaturized satellite
•10 x 10 x 10 cm3
•Commercial off-the-shelf (COTS) equipment
•Telecommunications
(UHF/VHF or S-band)
•Performing scientific measurements
•~100 kEUR
•Standard functions:
SwissCube
Power sub-system (solar cell & battery)
Inertial measurement sensors & GPS
CPU
Limited attitude control
von Karman Institute for Fluid Dynamics
QB50 uses double CubeSats(10 x 10 x 20 cm3)
Science Unit:
Lower Thermosphere Measurements
Sensors to be selected by a Working Group
Standard sensors for all CubeSats
Functional Unit:
Power, CPU, Telecommunication
IMU, GPS
Optional Technology Package available for the CubeSat community !!
ISIS 2U
von Karman Institute for Fluid Dynamics
VKI ReEnt-Sat – Concept
•Light ablative material as thermal shield
•Temperature & Pressure measurements on the thermal shield
•Skin friction measurements on the side
•Base flow measurements
•Materials experiment (tbc)
•Blackout experiment (tbc)
Atmospheric Re-Entry Flight Data
Flight data for Debris/Disintegration Tool (RAMSES) Validation
ReEnt-Sat to survive until ~70km (TBD) altitude
von Karman Institute for Fluid Dynamics
QB50 - AdvantagesThe intention is to provide free of charge to the participating CubeSat teams
•launch vehicle
•custom-designed deployment system
•environmental testing at ESA – ESTEC (if requested)
•standardized sensors for the science unit
•launch services and interfaces to the launch vehicle authorities
•transport of the 50 CubeSats from ESA-ESTEC to the launch site
•CubeSat checkout testing during the launch campaign
This is very attractive to the CubeSat community and there is a lot of interest to participate in QB50. Letters of Intent (LoI) from interested universities are now coming in.
von Karman Institute for Fluid Dynamics
QB50 – CubeSat Community
10 from United States
2 from Canada
3 from Japan
2 Austrian, 2 Belgian,1 Czech, 2 Danish,
1 Estonian, 1 Finnish, 3 French, 4 German,
1 Hungarian, 2 Dutch, 3 Italian, 1 Norwegian,
1 Polish, 1 Portuguese, 1 Romanian, 1 Swedish,
3 Spanish, 2 Swiss, 3 from the UK
35 from Europe
These teams will be invited to participate in the workshop.
von Karman Institute for Fluid Dynamics
QB50
WORKSHOP
17-18 Nov 2009
www.vki.ac.be/QB50
Participation is by invitation only
von Karman Institute for Fluid Dynamics
Under consideration as sensors/instruments:•FIPEX sensor for measurement of atomic O
•Atmospheric density
•Miniaturized mass spectrometer
•Accelerometer
•
•
Numerous talks at the QB50 workshop on 17-18 November will be devoted to candidate sensors.
Selection of the standardized sensors for in-situ measurements by the Sensor Selection Working Group (SSWG) in the first half of 2010.
Composition of the SSWG:•A few atmospheric physicists and chemists
•A few CubeSat PIs
•Experts for in-situ sensors for atmospheric research
QB50 – Science Unit
•Magnetic Field
•Radiation intensity
•Ion density
von Karman Institute for Fluid Dynamics
Under consideration as sensors/instruments:•FIPEX sensor for measurement of atomic O
•Atmospheric density
•Miniaturized mass spectrometer
•Accelerometer
QB50 – Science Unit
•Magnetic Field
•Radiation intensity
•Ion density
Magnetic Field
Radiation Detector
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SHTIL
QB50 – Launcher
von Karman Institute for Fluid Dynamics
SHTIL
The payload mass versus the altitude of an orbit inclined 78.9°
(above the mean Earth radius Rmean=6371 km)
QB50 – Launcher
von Karman Institute for Fluid Dynamics
QB50 – Launching & DeploymentOption 1
Platform 2 & 3:
22 CubeSats on one platform
The central 600mm diameter is for the engine
Deployer dimensions:
For a double CubeSat unit
Outside Envelope: 300.6 x 126.2 x 168.8 mm
Total Mass: 2kg + 1.7kg = 3.7kg
von Karman Institute for Fluid Dynamics
QB50 – Launching & DeploymentOption 2
Alternative Radial Deployment:
13 deployers on each platform
50 deployers on four platforms
Possibility to deploy in different directions
von Karman Institute for Fluid Dynamics
QB50 – Launching & DeploymentOption 3
Radial Deployment:
14 2 Units ISIPODs for each platform
i.e. 3.5 platforms arranged so as to allow adapter doors to be opened
von Karman Institute for Fluid Dynamics
von Karman Institute for Fluid Dynamics
von Karman Institute for Fluid Dynamics
QB50 – Schedule17-18 Nov 2009 Science Workshop at VKI
19 Nov 2009 Management and Planning meeting at VKI Formation of the Steering Group and the two Working Groups (ODWG, SSWG)
15 Jun 2010 Project Kick-Off meeting at VKI
30 Jun 2010 Issue by VKI of the Call for Proposals for QB50 CubeSats
30 Jul 2010 Deadline for submission of CubeSat proposals to VKI, including letters of funding
2-13 Aug 2010 Proposal clarification period
16-27 Aug 2010 Evaluation of proposals by VKI and selection of 50 CubeSats plus5 backup CubeSats
31 Aug 2010 Notification on selection to CubeSat PIs
early Oct 2010 Day 1: Science Workshop at VKI
Day 2, a.m.: meetings of the two Working Groups (ODWG, SSWG)
Day 2, p.m.: meeting of the Steering Group, final selection of the standardised sensors for atmospheric research
…
von Karman Institute for Fluid Dynamics
QB50 – ScheduleSchedule for selected CubeSatsSep-Dec 2010 Securing the funding for CubeSat development
Jan 2011-Dec 2012 CubeSat development at universities
Sep 2011 Shipment of the standardised sensors for atmospheric research from ESTEC to universities
Nov 2012 CubeSat mass dummies delivery to ESTEC
Jan-Feb 2013 CubeSat flight models environmental testing at universities
Mar 2013 CubeSat flight models delivery to ESTEC
Launch associated activitiesMar 2013 Launch campaign preparation workshop at ESTEC
Apr 2013 Shipment of CubeSat flight models to the launch site
May-Jun 2013 Launch campaign
Jul 2013 Launch
von Karman Institute for Fluid Dynamics
QB50
WORKSHOP
17-18 Nov 2009
www.vki.ac.be/QB50
Participation is by invitation only