Zephyr HAPS Context

Market context

Zephyr is AALTO's solar-powered high-altitude platform aircraft for stratospheric connectivity and Earth observation services.

Target environment: Stratospheric airspace above conventional aircraft routes and below satellites.
Workflow context: Persistent aerial coverage, communications relay, Earth observation and wide-area monitoring.
Deployment model: High-altitude platform service operated for telecom, observation and government customers.
Commercial maturity: Commercialization-stage HAPS platform targeting service introduction in the mid-2020s.
Adoption constraints: Requires aviation approvals, payload integration, ground operations, customer network integration and weather-aware deployment planning.
Market position: Solar HAPS aircraft positioned between satellites and terrestrial network infrastructure.
Adjacent products: Stratospheric UAV for connectivity, observation and persistent wide-area coverage.

Defense

Persistent aerial coverage, communications relay, Earth observation and wide-area monitoring.

Stratospheric airspace above conventional aircraft routes and below satellites.

Ceiling: Above 18,300 m / 60,000 ft stratospheric operation
Wingspan: Around 25 m
Operational Environment: Stratosphere above weather and conventional air traffic
Payload Options: Earth observation and connectivity payloads, including customer and third-party payloads
Task Scope: Earth observation, near-real-time video, connectivity, and persistent stratospheric services
Operational Role: Solar HAPS aircraft for persistent stratospheric sensing and connectivity
Endurance Profile: Multi-month continuous flight target
Weight: Around 75 kg