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Product profile

Zephyr HAPS

Zephyr HAPS is AALTO solar-powered high-altitude platform station. It operates in the stratosphere for persistent communications, earth observation and sur...

Facts

Company
AALTO
Product type
uav
Status
active
Website
https://www.aaltohaps.com/zephyr-haps/

About Zephyr HAPS

Zephyr is a solar-powered fixed-wing aircraft designed to remain above 60,000 feet for extended missions. Solar arrays power the aircraft during daylight and charge batteries for overnight flight, keeping communications and observation payloads in the stratosphere above weather and commercial air traffic.

Payloads support direct-to-device connectivity, Earth observation and intelligence missions over selected operating areas. AALTO completed a flight lasting 67 days, six hours and 52 minutes in 2025 and is developing launch, control and service infrastructure for commercial operations. AALTO is an Airbus subsidiary.

Summary

Type: HAPS UAV

Core: Stratospheric endurance

Function: Communications

Audience: Defense

Specifications

ceiling
Above 18,300 m / 60,000 ft stratospheric operation
endurance_profile
Multi-month continuous flight target
operational_environment
Stratosphere above weather and conventional air traffic
operational_role
Solar HAPS aircraft for persistent stratospheric sensing and connectivity
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
weight_kg
Around 75 kg kg
wingspan
Around 25 m

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