Author Topic: Delft Aerospace Rocket Engineeing (DARE) (Read 26997 times)

Rik ISS-fan · « **Reply #40 on:** 09/10/2018 07:30 pm »

Quote from: catdlr on 09/03/2018 07:17 am

Quote from: Rik ISS-fan on 09/02/2018 11:44 am
Apperently the video posted by catdlr shouldn't have been made public. It showed a small KNDX rocket motor test.
Also the Stratos advanture continues with Stratos IV, planned for launch in 2019.

Yep, post deleted.

That video isn't available any more. But a new one is on twitter.

catdlr · « **Reply #41 on:** 10/28/2018 07:45 pm »

Spark Torch Rocket Igniter Test

Delft Aerospace Rocket Engineering
Published on Oct 28, 2018

Test of the spark torch igniter performed by the Cryogenic Propulsion Team on October 16, 2018. The igniter uses gaseous hydrogen and oxygen to produce a hot flame to igniter the ethanol-liquid engine. Note that due to the extremely high temperature of the hydrogen-oxygen reactants, (almost) no flame is visible.

Delft Aerospace Rocket Engineering is a team from Delft University of Technology and one of the leading student rocketry teams in the world. Follow us on social media to stay up-to-date!

catdlr · « **Reply #42 on:** 12/24/2018 10:08 am »

DHX-400 'Nimbus' Hybrid Rocket Engine Test 17

Delft Aerospace Rocket Engineering
Published on Dec 24, 2018

Test 16 of the DHX-400 'Nimbus' hybrid rocket motor for the Stratos IV student built sounding rocket.

Delft Aerospace Rocket Engineering is a student-team of Delft University of Technology and one of the largest and most advanced student rocketry teams in the world.

dare · « **Reply #43 on:** 02/15/2019 04:43 pm »

In the Netherlands, there is a student rocket program named Stratos IV, which is aiming to shoot for space in the summer of 2019. Stratos IV is a hybrid rocket developed by Delft Aerospace Rocket Engineering (DARE), an 18 year old student rocketry team of members of the TU Delft. DARE designs, develops and tests experimental rockets for scientific purposes.

In the past DARE already made significant progress on its way to space, with Stratos II+ reaching 21.5 km in 2015. Its successor, Stratos III was launched in the summer of 2018 with the goal to get even closer to space. Unfortunately, due to an anomaly, the 8.2-meter tall vehicle disintegrated at roughly 10 km altitude.

Based on the capabilities and potential of the Stratos III design, Stratos IV was developed and builts on DARE's hybrid rocket technology. The vehicle features active roll stabilization and the most powerful student-built hybrid engine in the world, we a peak thrust of 25 kN. The design is recently revealed, and the vehicle is currently under construction for its space shot in August 2019.

Find their new design in the video below!
https://www.youtube.com/watch?time_continue=3&v=H5lGYTb1jOw

Rik ISS-fan · « **Reply #44 on:** 02/15/2019 06:46 pm »

dare welcome on NSF. Are you related to the DARE society?

I found this Delta (TU Delft) Article: https://www.delta.tudelft.nl/article/dare-rocket-team-shoots-space
Launch from the Denel Overberg test rangein South Africa.
AFAIK Dare is building two rockets for their Stratos IV launch mission. They are developed from Stratos III, the titanium nozzle was already developed for Stratos III but it wasn't ready in time. Dare will use it on Stratos IV.

Are you taking the NLR flight computer as payload again?

Steven Pietrobon · « **Reply #45 on:** 02/16/2019 03:20 am »

Quote from: dare on 02/15/2019 04:43 pm

Based on the capabilities and potential of the Stratos III design, Stratos IV was developed and builts on DARE's hybrid rocket technology. The vehicle features active roll stabilization and the most powerful student-built hybrid engine in the world, we a peak thrust of 25 kN. The design is recently revealed, and the vehicle is currently under construction for its space shot in August 2019.

Thanks for the update and best of luck on the launch. Can you tell us where Stratos IV is launching from?

dare · « **Reply #46 on:** 02/16/2019 08:21 am »

Quote from: Rik ISS-fan on 02/15/2019 06:46 pm

dare welcome on NSF. Are you related to the DARE society?

I found this Delta (TU Delft) Article: https://www.delta.tudelft.nl/article/dare-rocket-team-shoots-space
Launch from the Denel Overberg test rangein South Africa.
AFAIK Dare is building two rockets for their Stratos IV launch mission. They are developed from Stratos III, the titanium nozzle was already developed for Stratos III but it wasn't ready in time. Dare will use it on Stratos IV.

Are you taking the NLR flight computer as payload again?

Indeed the titanium nozzle was already developed for Stratos III, however, some slight modification will be made for Stratos IV. In addition, the team is also eliminating the heavy aluminum combustion chamber, and replacing this by a fully composite chamber.

As you can read in the article of DELTA, the current plan is indeed to launch from the Denel Overberg Test Range. With regards to the payload, Stratos IV will again fly one (or multiple) scientific payloads on its journey to the Karman line. We will soon share more details about the exact payloads that Stratos IV will fly!

Rik ISS-fan · « **Reply #47 on:** 02/16/2019 05:16 pm »

Very good job by also replacing the aluminium combustion chamber by a composite one.
I've four questions concerning the composite combustion chamber:
1) Are you using carbon-fiber or glas-fiber for the chamber.
2) DARE has experience with glass-fiber, do you also have experience with carbon fiber casings?
3) Is the solid six (or alumini) involved with the composite casing development or is it part of StratosIV.
Lastly 4) are further static tests planned to prove the composite casing together with the titanium nozzle?

Another question came to mind: are you using the same oxidizer injection system as on stratos III?Or did you have to change it for the composite combustion chamber.

Thanks for the info. I'll anxiously wait for more detail about the payload.
Is there another croudfunding planned?

Rik ISS-fan · « **Reply #48 on:** 02/22/2019 03:29 pm »

Thanks DARE for the nice January & February news letter. DARE Newsletters

dare · « **Reply #49 on:** 02/22/2019 04:20 pm »

Quote from: Rik ISS-fan on 02/16/2019 05:16 pm

Very good job by also replacing the aluminium combustion chamber by a composite one.
I've four questions concerning the composite combustion chamber:
1) Are you using carbon-fiber or glas-fiber for the chamber.
2) DARE has experience with glass-fiber, do you also have experience with carbon fiber casings?
3) Is the solid six (or alumini) involved with the composite casing development or is it part of StratosIV.
Lastly 4) are further static tests planned to prove the composite casing together with the titanium nozzle?

Another question came to mind: are you using the same oxidizer injection system as on stratos III?Or did you have to change it for the composite combustion chamber.

Thanks for the info. I'll anxiously wait for more detail about the payload.
Is there another croudfunding planned?

The combustion chamber for Stratos IV will be designed out of a carbon fiber structure. In the past we used glass fiber for Aether, however this will also be replaced with carbon fiber. For Stratos III already a lot of parts were manufactured out of carbon fiber (eg. tank with cf overwrap). The solids team is also considering the use of a carbon combustion chamber for the Aether mission and their Icarus motor. Within the next 2 months, we will conduct multiple tests of the DHX-400 Nimbus. Of course, the whole system will also be tested with carbon combustion chamber and titanium nozzle. The oxidizer system remains the same.

We will indeed also do a crowdfunding this year. This will likely start within a month from now and announced via our usual social media channels.

DARE

catdlr · « **Reply #50 on:** 03/01/2019 03:58 am »

Stratos III Student Rocket - Aftermovie 2

Delft Aerospace Rocket Engineering
Published on Feb 28, 2019

Second after movie of the Stratos III launch campaign.

Delft Aerospace Rocket Engineering is a student-team of Delft University of Technology and one of the largest and most advanced student rocketry teams in the world.

catdlr · « **Reply #51 on:** 03/01/2019 09:34 am »

Stratos IV Rocket - Design Presentation

Delft Aerospace Rocket Engineering
Published on Mar 1, 2019

A re-recording of the Stratos IV design reveal presentation, the rocket aiming for space in August 2019.

catdlr · « **Reply #52 on:** 03/12/2019 03:01 am »

Composite Overwrap Stratos IV Rocket Oxidizer Tank

Delft Aerospace Rocket Engineering
Published on Mar 11, 2019

Timelapse of the composite overwrap of the Stratos IV rocket flight tanks. This is done using the filament winding technique. The tanks are flight hardware and stores a total of 174 kg of nitrous oxide oxidizer at a pressure of 60 bar.

Delft Aerospace Rocket Engineering is one of the largest and most advanced student rocketry teams of the world. With over 18 years of experience in high-power rocketry, our goal is to reach space with a fully student-built rocket. As a Dreamteam of Delft University of Technology, we aim at providing students with a hands-on experience that is unique in this world. Next, to our Stratos and Aether flagship projects, the society also conducts fundamental research in all fields of sounding rocketry, such as propulsion, recovery, control, structural design and recovery.

dare · « **Reply #53 on:** 06/14/2019 02:28 pm »

Yesterday DARE unveiled their new Stratos IV rocket, aiming for space in the summer of 2020.

Of course, for this special occasion you do need an appropriate way to transport the rocket from A to B 😉

Design unveil stream at

octavo · « **Reply #54 on:** 07/22/2019 08:55 am »

Quote from: dare on 02/16/2019 08:21 am

the current plan is indeed to launch from the Denel Overberg Test Range.

Hi dare,

Is this still the case? As a South African rocketry fan, it is super rare for us to get to see any kind of launch at all, and I would absolutely make the trip down to Cape Town to watch. Are there any details available for curious spectators and rocket fans?

catdlr · « **Reply #55 on:** 07/22/2019 09:45 am »

Radiation Heat Transfer in a Rocket Nozzle

Delft Aerospace Rocket Engineering
Published on Jul 22, 2019

Test 20 of the DHX-400 'Nimbus' hybrid rocket engine, for the Stratos IV project, demonstrating the successful use of a 3D printed titanium composite nozzle structure, with a graphite insert.

Delft Aerospace Rocket Engineering is one of the largest and most advanced student rocketry teams in the world. As a Dreamteam of Delft University of Technology, we aim at providing students with a hands-on experience that is unique in this world. Next to our Stratos and Aether flagship projects, the DARE conducts fundamental research in all fields of sounding rocketry, such as propulsion, recovery, control, structural design and recovery.

Fmedici · « **Reply #56 on:** 10/15/2021 10:33 pm »

Today's launch attempt of the Stratos IV rocket was scrubbed, next attempt will be on October 20 according to the description of the webcast.

(PS: is this the right thread? I couldn't find where the latest info have been published)

Steven Pietrobon · « **Reply #57 on:** 10/16/2021 02:10 am »

Here's the link for the livestream.

Steven Pietrobon · « **Reply #58 on:** 10/16/2021 02:13 am »

View of the vehicle on the pad.

russianhalo117 · « **Reply #59 on:** 10/18/2021 01:56 pm »

Livestream for second attempt: