1. Mechanics of the Orthogonal Bias Cable-Net System
In an air-supported structure, the interior air pressure acts as the primary structural support, pushing outward against the membrane envelope. For clear spans exceeding 50 meters, relying on membrane fabric alone generates massive hoop stresses that exceed the tensile strength of standard architectural fabrics.
Champion employs an **Orthogonal Bias Cable-Net Reinforcement Grid**:
- High-tensile galvanized aircraft steel cables (Ø10mm to Ø18mm) are woven diagonally across the outer surface of the dome in a diamond mesh.
- The cable net absorbs over 85% of the total tension generated by internal pressure, high winds, and snow loading.
- Membrane panels function primarily as an environmental containment skin, dramatically lowering the mechanical stress on fabric seams and allowing clear spans up to **150 meters completely column-free**.
2. Smart Automated PLC Atmospheric Regulation
The internal operating pressure inside a Champion air dome is maintained between **200 Pa and 450 Pa** (approximately 0.002 to 0.0045 bar above atmospheric pressure). This slight differential is completely imperceptible to human occupants—equivalent to descending just two or three floors in an elevator.
**The Smart Automated Control Loop:**
- **Continuous Wind Anemometer Integration:** When external wind speeds surpass 60 km/h, the automated PLC automatically increases internal pressure to 350–450 Pa, stiffening the dome envelope to eliminate wind flap and aerodynamic buffeting.
- **Snow Sensor & Thermal Snowmelt:** Under heavy snowfall, automated sensors trigger high-volume heated airflow directed along the dome ceiling, melting accumulating snow before excessive drift weight can form.
- **Air Quality & PM2.5 Filtration:** Air handling units integrate primary and secondary HEPA filters, exchanging the entire indoor air volume 6 to 8 times per hour while filtering out 98% of airborne dust and smog.
3. Triple-Tier Safety & Power Redundancy Matrix
To guarantee zero-fail integrity in public sports stadiums and industrial enclosures, Champion engineers a mandatory 3-tier redundancy protocol:
1. **Primary Variable-Frequency Blower:** Energy-efficient German-engineered direct-drive fan supplying continuous baseline pressure.
2. **Auxiliary Secondary Blower:** Automatically spins up within 3 seconds if primary blower pressure drops below threshold.
3. **Automated Diesel Generator with ATS:** In the event of a catastrophic municipal power grid failure, the on-site diesel backup generator fires within 8 seconds via an automatic transfer switch (ATS), sustaining uninterrupted pressure for up to 72 hours without refueling.