The_Hound_In_Near_Space (Background: Nasa STS-64)
The_Hound – Sustainer near Apogee (Background Source: wikipedia/Thunderstorms_over_the_Pacific_seen_from_Earth_orbit_on_STS-64.jpg)

Short:

the_hound_openrocket
Rocket Configuration (Openrocket)

Two stage „Minimum-Diameter“ rocket with commercial Motors.

Booster: Cesaroni CTI Pro 98 6GXL

Sustainer: Cesaroni CTI Pro 75 6GXL

Peak Altitude: > 42km (Sustainer)

Peak Velocity: > Mach 3 (Sustainer)

 

The Project :

the_hound_openrocket_sim

The objective here is to build a two-stage rocket with comercially available motors below a total impulse 30000 Ns, which is optimized to achieve highest possible altitude (in the boundary of materials and manufacturing techniques available to our team).

Our simulations suggest that – dependant on the actual reload type –  the rocket will reach altitudes greater than 42 km above ground and fly velocities exceeding Mach 3.

That number presents quite a challange in various aspects. On one hand, we need to build different parts as light and small as possible to be able to obtain that speed and altitude. On the other hand, those values raise the need e.g. for toughness and heat resistance, demanding more special materials and manufacturing techniques. All in all this is a tricky multi variable optimization problem.

Other challenges are: maintain radio contact; get height confirmation via multiple gps-trackers; apogee and barometric height detection to trigger first and second stage recovery (drogue and parachute); make a video; transmit sensor data data and – most important – landing coordinates!

All that set, the biggest challenge for Europeans is to find a launch site with an appropiate height wavier and safety margin. Thus far the only viable option would be to venture to a launch event in the Black Rock Desert, Nevada, USA.

Nevertheless, up until now anything above 32.3 km would set a new „european university amateur club record“ – and that is what we want to go for!

 

Key Componets:

  • Flight-Computer: inertial measurement; gps-data; liftoff-detection, seperation, sustainer-motor and recovery initiation; and long-band RF-module (also to trasmit landing or near landing position). Miniaturized design via SMD-technology.
  • Ground-Station: Multiple Ground-RF-Repeaters in a Raspi-Head-Design (possible Ballon or Drone mounting) transmitting data packets to Ground-Control and presenting Rocket-Status on a website.
  • Airframe: Glass Composite wound Nosecone and Tubing (for RF-tranparency and Minimum-Diameter-Adapters between Motor-Tubes and Fuselage
  • Staging Adapter: Integrated into sustainer Tailcone-Design (lightweight, stiff and compact).
  • Recovery: Drougue design with heat-resistant materials. Very lightweight Parachute design with new materials from one of our Sponsors.
  • Fincan: We decided to go for a lightweight but full-metal-design manufacutred by DirectMetalLaserSintering. The interior isogrid-like structure is enabling a superior streght-to-weight ratio (similar to carbon composites) while ensuring sufficient heat dissipation to endure higher mach-numbers.

 

the_hound
CAD Model Rendering of „The Hound“

 

Project Team:

Christian Plasounig (Project Leader)

Christoph Fröhlich

Ulrich Meisl

Reinhard Rath

Stefan Schindler

Manuel Schleiffelder

Andreas Bauernfeind

Peter Kremsner

Benedikt Stingl