Delft Aerospace Rocket Engineering DARE DARE Media exposure Overview from May 2011 to July 2014 Monday 25 th August, 2014
Apr 02, 2016
Delft Aerospace Rocket Engineering
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DARE Media exposureOverview from May 2011 to July 2014
Monday 25th August, 2014
Delft Aerospace Rocket Engineering
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Contents
Launch of the Stratos II concept launcher.2011-05-10 TU Delft website 12011-05-12 AD - Haagsche Courant 22011-05-13 Astroblogs.nl 32011-05-13 De Stentor 42011-05-13 Hart van Nederland 52011-05-13 NU.nl 62011-05-13 Omroep Gelderland 72011-05-14 De Volkskrant 82011-05-14 Reformatorisch Dagblad 92011-05-15 Studenten.nl 102011-05-16 Omroep West 11
Opening of the museum exhibition featuring the IAC 2011 CanSat rocket.2012-02-25 De Telegraaf 122012-02-26 Delft op Zondag 132012-02-29 Delftse Post 142012-04-14 Maxwell 17
General2012-03-01 TU Delta 152013-02-20 UKSEDS website 182013-03-22 Leonardo Times 192013-05 NVR magazine 202013-05-08 Space safety magazine 21
First full scale tests of the Stratos II hybrid engine at TNO2013-06-18 Scientias.nl 232013-06-18 TU Delft public Facebook page 242013-06-19 NewSpaceWatch.com 252013-06-20 Dumpert.nl 262013-06-22 De Telegraaf 282013-06-23 Reddit.com 272013-06-24 GeekWeek Poland 29
Opening of the KorolevLab and unveiling of the Stratos II rocket2014-06 Technische Weekblad 302014-06-13 TU Delta website 312014-06-23 NewSpaceWatch.com 32
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Source TU Delft websiteDate 10th of May 2011Type News section of the website of Delft University of Technology.Occasion Launch of the Stratos II concept launcher on a launch day in the Netherlands.
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Source Algemeen Dagblad - Haagsche CourantDate 12th of May 2011Type Dutch national newspaper.Occasion Launch of the Stratos II concept launcher on a launch day in the Netherlands.
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Source Astroblogs.nlDate 13th of May 2011Type Dutch website on astronomic and science related news.Occasion Launch of the Stratos II concept launcher on a launch day in the Netherlands.
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Source Website De StentorDate 13th of May 2011Type Website of a Dutch newspaper.Occasion Launch of the Stratos II concept launcher on a launch day in the Netherlands.
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Source Website Hart van NederlandDate 13th of May 2011Type Website of a popular Dutch television news show.Occasion Launch of the Stratos II concept launcher on a launch day in the Netherlands.
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Source NU.nlDate 13th of May 2011Type Popular Dutch news website.Occasion Launch of the Stratos II concept launcher on a launch day in the Netherlands.
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Source NU.nlDate 13th of May 2011Type Omroep Gelderland website.Occasion Launch of the Stratos II concept launcher on a launch day in the Netherlands.
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Source De VolkskrantDate 14th of May 2011Type Page-wide article in a Dutch national newspaper.Occasion Launch of the Stratos II concept launcher on a launch day in the Netherlands.
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Source Reformatorisch dagbladDate 14th of May 2011Type Dutch regional newspaper.Occasion Launch of the Stratos II concept launcher on a launch day in the Netherlands.
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Source Studenten.nlDate 15th of May 2011Type Website aimed for Dutch students.Occasion Launch of the Stratos II concept launcher on a launch day in the Netherlands.
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Source Omroep WestDate 16th of May 2011Type Website of a Dutch regional newspaper and television network.Occasion Launch of the Stratos II concept launcher on a launch day in the Netherlands.
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Source De TelegraafDate 25th of February 2012Type Column of a Dutch space expert in a national newspaper.Occasion Opening of the museum exhibition including the CanSat rocket launched at
the International Astronautical Congress in South Africa 2011.
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Source Delft op ZondagDate 26th of February 2012Type Website of a news organization aimed at the city of Delft and surrounding
area.Occasion Opening of the museum exhibition including the CanSat rocket launched at
the International Astronautical Congress in South Africa 2011.
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Source Delftse PostDate 29th of February 2012Type Website of a news organization aimed at the city of Delft and surrounding
area.Occasion Opening of the museum exhibition including the CanSat rocket launched at
the International Astronautical Congress in South Africa 2011.
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Source TU DeltaDate 1st of March 2012Type News magazine of Delft University of Technology.Occasion Update on the Stratos II project.
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Source TU DeltaDate 15th of March 2012Type News magazine of Delft University of Technology.Occasion Opening of the museum exhibition including the CanSat rocket launched at
the International Astronautical Congress in South Africa 2011.
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Source MaxwellDate 15th of March 2012Type Magazine of the TU Delft faculty of Electrical Engineering, Mathematics
and Computer Sciences.Occasion Launch of the CanSat rocket at the International Astronautical Congress in
South Africa 2011.
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FotopaginaCanSat in Zuid-Afrika
Auteur: Rob Hermsen
Op een open vlakte in het
zuidelijkste puntje van Afrika,
waar struisvogels en zebra’s vrij
rondlopen en je op moet pas-
sen voor pofadders en Kaapse
cobra’s, zijn Delftse studenten
bezig één van hun raketten te
prepareren voor de eerste Can-
Sat lancering op het Afrikaanse
continent. Afgelopen september
waren een aantal studenten van
Delft Aerospace Rocket Engi-
neering (DARE) aanwezig bij
het International Astronautical
Congress in Zuid-Afrika en daar
hebben zij hun CanSat raket,
met aan boord verschillende
Zuid-Afrikaanse ‘satellieten in
een blikje’ (CanSat’s) naar 1km
hoogte gelanceerd.
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Source UKSEDS websiteDate 20th of February 2013Type Website of the organization “UK Students for the Exploration and Develop-
ment of Space” (UKSEDS).Occasion Attendance of DARE at the yearly national congress of UKSEDS.
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Source Leonardo TimesDate 22th of March 2013Type Magazine of the TU Delft Aerospace Engineering faculty.Occasion Update on the progress of Project Stratos II. (Only the first page from the
four paged article is included in this document.)
38 Leonardo Times MARCH 2013
PROJECT STRATOS
Stratos I that flew in Kiruna, Sweden in 2009 was the first rocket designed and produced by DARE capable of reaching the stratosphere. Stratos I flew on an in-house developed solid rocket fuel com-bination of KNO3 and industrial sugar. According to radar and telemetry data, the rocket reached a height of 12.3km, whilst also collecting scientific data using electronics situated in the nose cone. This meant that Stratos I broke the European Amateur Rocket Altitude record [1]. Rem-nants of the flight capsule are still being displayed in the hall of the Electrical Engi-neering, Mathematics and Computer Sci-
ence (EWI) faculty at TU Delft.After the successful launch, the team was in a euphoric state. Straight after the flight capsule was retrieved and returned to Delft, the team started discussing a fol-low-up project. The team members knew that they had the capability to design, manufacture and launch rockets to ex-treme heights (on an international level), and this gave them such a confidence that DARE came up with a new and even big-ger challenge: becoming the first student team ever to reach space. A preliminary study concluded that with a higher specif-ic impulse and an increased performance of the propulsion system, it was possible
to reach the Kármán line – the boundary of space – at 100km altitude. Additional calculations showed that the solid rocket fuel used in Stratos I (Isp=120s) needed to make way for a type of fuel with a specific impulse of above 180s. Thus developing a new propulsion system and a new type of rocket fuel was essential.
It became clear that redeveloping a pro-pulsion system and reaching an altitude of 100km was more feasible if done step-wise. The team decided that the most reliable way to reach space was to first develop a new propulsion system and fly this system on a rocket half-way to space
Reaching space with a student-built rocket
In the spring of 2009 a team of 15 TU Delft students travelled to Kiruna, Sweden with
only one goal: to launch the rocket Stratos I they had been working on for 2 years to
an altitude of over 12km, thereby claiming the European Amateur Rocket Altitude
record. These students were part of Delft Aerospace Rocket Engineering (DARE), a
Dream Team of the TU Delft involved in research, development, manufacturing and
launching of rockets. However, this record-breaking launch was not a single project;
it was the first part of a larger endeavour of which the primary goal was to become
the first student team in the world to reach space with a student-built rocket.
TEXT Maarten Haneveer, BSc Student Aerospace Engineering
PROJECT STRATOS
Student project
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Source NVRDate May 2013Type Magazine of the NVR.Occasion Project Stratos and the Aurora DHX-200 engine. (Only the first page from
the four paged article is included in this document.)
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Source Space safety magazineDate 8th May 2013Type Space safety online magazineOccasion DARE organisation in general with focus on the ensurance of safety within
the team.
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Source MaxwellDate June 2013Type Magazine of the TU Delft faculty of Electrical Engineering, Mathematics
and Computer Sciences.Occasion Article on the development of electronics within DARE, both for CanSat
and Stratos II. (Only the first page of the article is shown here.)
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Dream teamDare - Stratos II
All of the electronics used to control the Stratos II rocket, as
well as all other DARE rockets, are fully developed and built
by DARE members. The basic functionality required to con-
trol a rocket could be summarized as a straight forward set of
steps: igniting the engines, detecting launch and deploying a
parachute. One could achieve these functions using a simple
timer based controller. For most rockets however this method
would not suffice.
A significant challenge arises from making the electronics com-
pliant with the extreme forces and vibrations associated with
the launch of the rocket. An extra challenge for the electronics
in the Stratos II rocket results from the space-like conditions
at 50 kilometers altitude. In order to improve mission perfor-
mance, an event driven system is more suitable than a simple
timer based system. The Stratos II electronics are also to power
the various payloads on board, store generated payload data and
transmit telemetry data back to the ground station in real time.
The Stratos II flight computer will be equipped with a sensor kit
containing an inertial measurement unit, magnetic field sen-
sors, pressure sensors and temperature sensors. These sensors
Geert Henk Visser en Christ Akkermans
Delft Aerospace Rocket Engineering (DARE) is a student organization at the TU Delft which focuses on
the design and production of rockets. The largest project within DARE is called Project Stratos. Within
this project, students aim to design, build and launch a rocket to at least 50 kilometers altitude, whilst
also servicing a multitude of payloads. After reaching the maximum altitude, the nosecone harboring all
of the electronics and payloads is to descend back to Earth using a parachute. This Stratos II rocket is
the successor to DARE’s Stratos I rocket, launched in 2009, which set the European altitude record for
amateur rocketry at 12.3 kilometer.
Figure 1: Stratos payload controller
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Source ScientiasDate 18th of June 2013Type Popular Dutch scientific news website.Occasion Text and video regarding the first full scale test of the Aurora DHX-200
hybrid rocket engine for Stratos II performed at TNO Rijswijk.
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Source TU Delft FacebookDate 18th of June 2013Type Public Facebook page of Delft University of Technology.Occasion Text and video regarding the first full scale test of the Aurora DHX-200
hybrid rocket engine for Stratos II performed at TNO Rijswijk.
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Source NewSpaceWatchDate 19th of June 2013Type International space news website.Occasion Text and video regarding the first full scale test of the Aurora DHX-200
hybrid rocket engine for Stratos II performed at TNO Rijswijk.
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Source DumpertDate 20th of June 2013Type Popular Dutch media website.Occasion Video regarding the first full scale test of the Aurora DHX-200 hybrid rocket
engine for Stratos II performed at TNO Rijswijk.
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Source RedditDate 20th of June 2013Type Internationally popular news website.Occasion Video regarding the first full scale test of the Aurora DHX-200 hybrid rocket
engine for Stratos II performed at TNO Rijswijk.
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Source TelegraafDate 22th of June 2013Type Major Dutch newspaper.Occasion Article regarding the first full scale test of the Aurora DHX-200 hybrid rocket
engine for Stratos II performed at TNO Rijswijk and the project in general.
Lancering vanafEsrange (Zweden)
tank met oxidator N2O (lachgas)
brandstofinjectie
ontsteking
verbrandingskamer
straalpijp De straalpijp is op een draaibank gemaakt uit een blok grafiet.
HYBRIDEBRANDSTOFMOTORVAN DE STRATOS II
BRON: DELFT AEROSPACE ROCKET ENGINEERING illustratie: WILLIAM PENNING
550 cm
20 cm
Met een mix van kaarsvet,koffiezoetjes, aluminium-poeder en lachgas als nogalongebruikelijk stuwstof ho-pen studenten van de TU-Delft dit najaar de STRA-
TOS II-raket naar een recordhoogte van 50 kilo-meter te brengen. Het relaas van een jongens-droom die werkelijkheid lijkt te worden.
Bouw je eigen raket
Voor de 22-jarige Rob Herm-sen, vierdejaars studentLucht- en Ruimtevaart, staathet al maanden vast: het oudeEuropese record van 12,5 kilo-meter van de STRATOS Iwordt verpulverd. Rob is’Head of Operations’ van de ra-ketvereniging DARE. De ne-gen leden zijn behoorlijk ze-ker van hun zaak. Afgelopenweek heeft de DHX-200 - desterkste raketmotor ooit ge-bouwd bij de TUDelft – een be-langrijke test in de TNO-bun-ker in Rijswijk doorstaan.
STRATOS II is in alle op-zichten een uniek project. Hetis de eerste raket die een we-tenschappelijke lading rich-ting stratopauze vervoert, eenGeigerteller die ruimtestra-ling meet en een antenne diede ESA wil gebruiken voor een– ooit - te bouwen Maanlander.
Maar vooral opmerkelijk isde ontwikkeling van een revo-lutionaire nieuwe brandstofvoor deze zes meter grote ’hy-bride’-raket. Hermsen:„Vloeibare brandstof, zoals deSpaceshuttle gebruikte, vielaf. Dat vergt uiterst gecompli-ceerde systemen. In ’86 faaldedit bij de Challenger met desa-streuze gevolgen. Vaste brand-stof was ook geen optie. Zo’nraket is feitelijk niets andersdan een kolossale vuurpijl. Nalancering ben je alle controlekwijt. Daarom een vaste stuw-stof, bestaande uit sorbitol, pa-raffine en aluminiumpoedermet 80 liter lachgas (N2O) alsoxidator. De SpaceShipTwovan Richard Branson en deDream Chaser die astronautennaar ISS moet brengen makenook gebruik van hybride aan-drijving. Maar er is een groot
team tegenaan loopt zijn legio.„Het is geen conceptcar diekun stilzetten om processen tetweaken, bij een raket moetenalle systemen vanaf het mo-ment van ontsteking feillooswerken. Omdat het een hybri-de is kunnen we de vlucht wel-iswaar in de lucht afbrekenmaar dan houd je niet meerover dan een berg metaal waaralleen de schroothandelaarnog een paar centen voorgeeft. En dan heb je over deeindfase van het project. Wezijn vanaf nul begonnen, meteen aluminium straalpijp diebij de eerste test onmiddellijksmolt. In onze zoektocht naareen hittebestendig alternatiefkwamen we uiteindelijk uit inPolen. Daar vonden we een be-drijf dat blokken grafiet le-vert. Op de draaibank hebbenwe uit zo’n brok een zelf ont-worpen straalpijp getoverd.Ook de software, lanceerin-richting en de tank voor hetlachgas - die bestand moestzijn tegen een druk van 100 at-mosfeer - en de verstuiver heb-ben we zelf ontworpen."
De test in de TNO-bunkerheeft wel een belangrijke pro-ductiefout aan het licht ge-bracht. Tijdens de 15 secondenbrandertest – op drie secondena de totale brandertijd - ont-stond een scheur in de mantelvan de verbrandingskamer(zie video). Na onderzoekbleek dat dit werd veroorzaaktdoordat bij de productie luchtwas opgesloten in de vastestuwstof. Dit gaf ruimte voorde hete gassen om een gat in demantel te branden.
Als dit probleem in getac-
verschil in de stuwstof-samen-stelling. Wij zijn er van over-tuigd dat ons ’recept’ een be-duidend hoger rendementgeeft. De STRATOS II isenorm krachtig en acceleertvan 0 tot 100 kilometer per uurin 0,7 seconden. Daarom heb-ben we bij de TUDelft ook alvoorzichtig aangegeven dat werichtting thermosfeer willen,100 kilometer moet lukken."
De uitdagingen waar het
MARK VELDKAMP
■ VASTEBRANDSTOFMOTORNiet veel meer daneen dikke hollebuis, gevuld meteen brandstof eneen oxidator. Naontsteking brandtde buis van binnen-
■ VLOEIBAREBRANDSTOFMOTORWerkt door de vloei-bare brandstof enoxidator apart in deverbrandingskamerte spuiten. Dezemotor kun je zachteren uit zetten. Grotenadeel is de com-plexiteit. Je hebt
keld volgen nog twee uitdagin-gen. „De eerste is het vindenvan een lanceerbasis. Hopelijkwordt dat Esrange in Zweden.Dat ligt in een dunbevolkt ge-bied, 200 kilometer boven depoolcirkel. De laatste uitda-ging is de douane. Zie maareens een zes meter grote raketde grens over te krijgen…
Zie de test van de raketmotorbij TNO op: http://projectstra-tos.nl/
■ HYBRIDEDe tussenvariant. Bestaat netals de vastebrandstofraket uiteen holle buis met daarin devaste brandstof. Alleen wordtde oxidator vanuit een apartetank door de holle buis metbrandstof gespoten. Hetsysteem is bijna net zo simpelals een vastebrandstofmotor,maar de stuwkracht is welregelbaar. Veel hybride motoren gebrui-ken lachgas (N2O)als oxida-tor. De brandstof in een hy-bride motor brandt met eenfactor 10 langzamer weg danin een vastebrandstofmotor.Dat is een probleem als demotor een hoge stuwkrachtmoet leveren.
enorme turbopom-pen nodig om allebrandstof en oxida-tor in de verbran-dingskamer te spui-ten. De turbopompvan de Space Shuttledraaide 37.000toeren per minuut
en kon een Olym-pisch zwembad in25 seconden leeg-trekken. Daarbij zijnde vloeistoffencryogeen, ofwelalleen vloeibaar opextreem lage tem-peratuur.
uit leeg en de heteuitlaatgassen stu-wen de raket om-hoog. Een uitermatesimpel systeemwaarmee extreemhoge stuwkrachten
te halen zijn. En eris maar een stand:vol gas. De boostersvan de Spaceshuttleverbrandden zo elk5000 kg (!) brand-stof per seconde.
Aanval van studenten TU Delft ophoogterecord
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Source GeekWeek PolandDate 24th of June 2013Type Polish scientific news website.Occasion Article regarding the first full scale test of the Aurora DHX-200 hybrid rocket
engine for Stratos II performed at TNO Rijswijk and the project in general.
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Source Technische WeekbladDate June 2014Type Dutch popular science weekly magazine.Occasion Article regarding the opening of the DARE KorolevLab at the TU Delft
campus, the unveiling of the Stratos II rocket, and the Stratos II project ingeneral.
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Source TU Delta websiteDate 13th of June 2014Type TU Delft university pressOccasion Article regarding the opening of the DARE KorolevLab at the TU Delft
campus, and the unveiling of the Stratos II rocket.
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Source Technische WeekbladDate June 2014Type Website of Technisch Weekblad; A Dutch popular science weekly magazine.Occasion Article regarding the opening of the DARE KorolevLab at the TU Delft
campus, the unveiling of the Stratos II rocket, and the Stratos II project ingeneral.
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