High-Pressure Inflatable Shelter Solution — Technical Clarification

# High-Pressure Inflatable Shelter Solution

> **Technical Clarification Note** — Prepared for customer technical and operational review
> **Date**: 29 June 2026
> **Reference Application**: Approx. 35 m (L) × 10 m (W) × 6 m (H) shelter with internal functional partitioning

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## 1. Executive Recommendation

Based on the stated operating profile, SUNSHINE recommends a **high-pressure inflatable shelter** rather than a low-pressure inflatable shelter. The main reasons are structural rigidity, pressure retention, load distribution, temperature stability, and lower maintenance burden during field deployment.

The customer’s requested environment includes:
– Large shelter envelope (35 m × 10 m × 6 m)
– Functional partitioning (4-6 internal sections)
– HVAC and insulation requirements
– Equipment and personnel access points
– Operating temperature: -20°C to +50°C
– Wind resistance target: approx. 25 m/s

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## 2. Technology Comparison: High-Pressure vs Low-Pressure Inflatable Shelters

| Criterion | High-Pressure Inflatable Shelter | Low-Pressure Inflatable Shelter |
|—|—|—|
| **Operating Pressure** | Approx. 0.18-0.25 MPa | Approx. 0.02-0.04 MPa |
| **Structural Behavior** | Semi-rigid arch/air-beam support; better bending and torsional stiffness | Flexible membrane/rib support; more deformation under load |
| **Wind/Snow Response** | Loads transferred through air beams and anchors; lower local stress concentration | Loads more easily concentrate in local ribs and membrane areas |
| **Pressure Retention** | Long interval pressure retention; no continuous inflation required | More frequent supplementary inflation or continuous blower operation |
| **Temperature Suitability** | TPU beam material supports -20°C to +50°C range | PVC ribs may harden in cold and soften in heat |
| **Operational Durability** | Better for longer deployment, repeated setup | Better for short-term temporary use |
| **Lifecycle Cost** | Higher initial cost, lower field maintenance burden | Lower initial cost, higher operating attention |

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## 3. Design & Test Evidence Summary

The following test data comes from previous high-pressure inflatable shelter testing and structural verification:

| Test | Condition | Result | Technical Meaning |
|—|—|—|—|
| **Structural Design Verification** | High-pressure air-beam verification based on 0.20 MPa working pressure | Material and structural safety margins confirmed | Supports use of high-pressure air-beam frame |
| **Wind Load Test** | Grade 10 wind simulation; midpoint of main air beam (20 m-class shelter) | Within design limits | Provides test evidence close to customer’s 25 m/s target |
| **Snow Load Test** | 100 mm snow thickness simulation; 4.5 kN/m² uniform load | Vertical displacement < control target | Controlled deformation under representative load | | **Combined Structural Integrity** | Post wind/snow simulation observation | No wrinkling, cracking, or structural failure | Structural integrity and recovery capability confirmed | --- ## 4. Operating Pressure, Safety Factor & Stabilization - **Recommended operating pressure**: Approx. 0.18-0.25 MPa for high-pressure air beams - **Pressure safety margin**: Based on 0.20 MPa working pressure basis - **Chamber localization**: Independent beam chambers with high-pressure connectors to localize damage - **Anchoring strategy**: Expandable bolts (hard ground) or anchor plates (soil) --- ## 5. Service Life, Maintenance & Reference Cases | Category | Recommendation | |---|---| | **Expected Service Life** | Approx. 3 years field/outdoor use; approx. 6 years limited outdoor/sheltered use | | **Routine Maintenance** | Weekly air-beam pressure check; clean fabric surfaces; inspect connectors | | **Periodic Maintenance** | Monthly working pressure check; inspect/tighten connectors; check for abrasions or cuts | | **Storage** | Clean, dry, ventilated warehouse; avoid folding damage; protect from UV | --- ## 6. Conclusion For this customer application, the high-pressure inflatable shelter is the more suitable solution. The system better matches the required shelter size, military field use, wide temperature range, HVAC and internal partitioning needs, and the desired wind-resistance target. The available test evidence supports the proposed solution. --- *This white paper is based on internal test data and technical documentation. For project-specific validation, SUNSHINE recommends full structural calculation including door/window openings, HVAC equipment weight, partitions, snow accumulation patterns, wind direction, and terrain-specific anchoring requirements.*