Model Rocket
Nose Cone
280 mm · Ø137 mm · recovery bay
Body Structure
Forward 950 mm · modular airframe
Motor Section
1200 mm · high-thrust bay
Fin Design
Trapezoidal aluminum · 22.1° sweep
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Millennium Mk I
An advanced high-altitude rocket developed by students in Türkiye
Millennium Mk I is a high-performance experimental rocket platform developed by 213 Technic for the TEKNOFEST High-Altitude Rocket Competition. It features a fully modular architecture and has undergone engineering verification. The project was developed to unify aerodynamic design, structural analysis, avionics systems, the recovery mechanism, and flight simulations under a single engineering process.
The entire design process was carried out using CAD modeling, finite element analysis (FEA), aerodynamic calculations, manufacturing optimization, and flight simulations, with manufacturability and ease of maintenance as primary priorities.
General Technical Specifications
| Rocket Type | High-Altitude Experimental Rocket |
|---|---|
| Total Length | 2435 mm |
| Outer Diameter | 137 mm |
| Inner Diameter | 125 mm |
| Nose Cone Length | 280 mm |
| First Body Length | 950 mm |
| Motor Section Length | 1200 mm |
| Number of Fins | 3 |
| Recovery System | Multi-Stage Parachute System |
| Avionics Bay | Detachable Modular System |
| Structural Design | Modular Airframe |
Structural Design
Millennium Mk I is built on a fully modular airframe architecture that simplifies maintenance and assembly. The rocket consists of a nose cone, avionics bay, main body, motor section, and tail structure.
Body joints are designed to maintain axial alignment through high-precision machined integration tubes. This minimizes bending and vibration loads that may occur during flight. Primary load-bearing elements are made from high-strength aluminum and steel components, while system mass is kept as low as possible.
Nose Cone
The nose cone is optimized to reduce aerodynamic drag:
- Length: 280 mm
- Outer diameter: 137 mm
- Shoulder length: 205.5 mm
- Shoulder diameter: 123.2 mm
Recovery system attachments are housed within the nose cone and operate together with the separation mechanism.
Body Structure
The main body is designed with an inner diameter of 125 mm and an outer diameter of 137 mm. It consists of two primary sections:
- Forward body: 950 mm
- Motor body: 1200 mm
This configuration allows the avionics systems and propulsion system to be independently removed and reassembled.
Integration System
Inter-body connections are provided by a steel integration tube (124.5 mm diameter, 205.5 mm length, 3 mm wall thickness). This structure delivers high axial stiffness and reduces structural deformation during flight.
Motor Section
The motor bay is designed for high-thrust solid motors. The motor block is manufactured from high-strength aluminum:
- Outer diameter: 137 mm
- Inner diameter: 124.5 mm
- Forward piece: 20 mm / aft piece: 15 mm
Motor loads are transferred directly to the airframe through centering rings.
Fin Design
Millennium Mk I uses three trapezoidal-planform aluminum fins:
- Root chord: 210 mm
- Tip chord: 87.02 mm
- Span: 140 mm
- Sweep length: 69.18 mm
- Sweep angle: 22.1°
- Thickness: 3 mm
Fin geometry is optimized to increase static stability throughout flight while producing minimal drag at high speeds.
Internal Structural Elements
- 2 aluminum centering rings
- 2 fin mounts
- Avionics bulkhead
- Motor bulkhead
- Nose cone recovery bay
Avionics Section
The avionics bay is fully modular. It houses:
- Flight computer
- IMU sensors
- Barometric altimeter
- GPS
- Power distribution system
- Recovery control circuits
The system records real-time data throughout flight and manages the recovery systems autonomously.
Recovery System
Millennium Mk I uses a multi-stage recovery system for a safe landing:
- Nose separation
- Recovery bay
- Bulkhead structure
- Parachute attachments
- Electronic separation mechanism
Engineering Analyses
- CAD design
- Structural strength analyses (FEA)
- Aerodynamic analyses
- Flight simulations
- Center of gravity (CG) analysis
- Center of pressure (CP) calculations
- Static stability analysis
- Motor performance simulations
- Recovery system verification
Development Purpose
Millennium Mk I is not merely a competition rocket; it is the first full-scale application of the engineering methodologies, analysis infrastructure, and systems-integration approach developed within 213 Technic. Experience gained through this project has established the technical foundation for next-generation Millennium platforms capable of reaching higher altitudes. It has also given team members the opportunity to experience design, analysis, manufacturing, and integration processes on a real aerospace project, forming a significant engineering ecosystem.