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From Dare

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Revision as of 12:57, 23 June 2007

Welkom bij de DARE wiki. De dingen hieronder heb ik nog maar even laten staan omdat er nog wel een paar handige tips in staan.

image:DARE-logo-web.jpg


Delft Aerospace Rocket Engineering (DARE) is een studentenvereniging met als doel studenten de gelegenheid te geven om zelf amateur raketten te ontwerpen, bouwen en lanceren. DARE is verbonden aan de vliegtuigbouwkundige studie vereniging Leonardo Da Vinci van de faculteit Luchtvaart- en ruimtevaarttechniek (L&R) van de Technische Universiteit Delft. (TU Delft).


Contents

History

DARE was created in 2001 by six enthousiast Aerospace Engineering students, studying at the Technical University of Delft. These students had a craving to apply the knowledge gained during their curriculum in practise, by building rockets. In 2005 DARE has joined the 'Universalis' foundation. This foundation enables DARE to handle its own business on their own account. To learn more about Foundation Universalis, surf to Stichting Universalis

Rockets

In the last years the following rockets were built and lauched

Rockets
Name mass motor/enginesuccesfull parachute deployment retrieved launchdate
SRP I 40mm pvcnoyes2003
SRP II 40mm pvcnoyes7-5-2004
SRP III 40mm pvcnono7-10-2005
RVD 50mm Aluminiumnoyes2003
RVD 50mm Aluminiumnoyes2004?
Booster Project 3 X 40mm pvcnoyes27-5-2005
DX-1 DX-1 motoryesyes2003
DX-1 DX-1 motoryesyes5-7-2004
DX-1 ReVamPed DX-1 motornono10-7-2005
CanSat Launcher V1 DX-1 motornoyes28-4-2006
CanSat Launcher V2 DX1-EE motornoyes11-5-2006
CSL V3 DX1-EE motoryesyes6-10-2006

Engines

DARE uses home built and designed rocket engines. Over the years, the following engines have been built and tested.

Engines
Name Total impulse Burntime Dry mass Propellant mass Propellant
SRP (40mm PVC) 180 Ns 1 sKNO3/Sucrose
RVD (30mm aluminium) 300 Ns 1.4 sKNO3/Sucrose
DX-1 1250 Ns 1.4 s 2.7 kg? 1.2 kg KNO3/Sucrose
DX-1.2 1250 Ns 1.4 s 3.461 kg 1.2 kg KNO3/Sucrose
DX-1 EE 2500 Ns 2.4 s 4.656 kg 2.4 kg KNO3/Sorbitol
SATINE-T1 7500 Ns 14 s < 11 kg ~7.5 kg N2O/DARE-bitol
BigBoy 11000 Ns 5 s 17 kg? 11 kg KNO3/Sorbitol
DEIMOS I (50000) Ns 30 s per burn 6 kg (indefinite) LCH4/LOX

Raket stabiliteit

De stabiliteit van een raket is de neiging van de raket om terug te keren naar zijn evenwichtspositie. Een amateur-raket werkt meestal met passieve stabiliteit. Deze kan worden verkregen door het bevestigen van vinnen aan de raket. Voor de stabiliteit van een raket zijn twee punten van belang, het zwaartepunt en het aërodynamische drukpunt.


Media:Stability_of_an_model_rocket_in_flight.Tir-30.pdf

links

homepage DARE

  The links below contain information about to rocket construction.

INFOcentral

High Power & Model Rocketry

Richard Nakka's Experimental Rocketry Web Site

John Coker's Rocketry

Vern's Rocketry

Rocket material data


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