Sceye Completes 12-Day Stratospheric Flight Covering 6,400 Miles

This article is based on an official press release from Sceye.

Sceye, a U.S.-based aerospace and materials science company, has successfully completed a record-breaking stratospheric flight as part of its Endurance Program. According to an official press release from the company, its “SE2” High-Altitude Platform System (HAPS) remained airborne for more than 12 days, traveling over 6,400 miles from New Mexico to the coast of Brazil.

The mission marks a significant milestone in the development of stratospheric infrastructure for telecommunications and environmental monitoring. By demonstrating the ability to maintain long-duration flights, Sceye is moving closer to deploying its technology for commercial use, which aims to provide persistent connectivity and real-time data collection from the edge of space.

The successful flight validates several core systems, including power management and hull integrity, paving the way for pre-commercial test flights scheduled for later this year. We view this development as a critical step forward for the fast-growing stratospheric industry.

Breaking Records in the Stratosphere

The SE2 platform launched on March 25, 2026, at 8:26 a.m. Mountain Time from Sceye’s facilities in New Mexico. Over the course of its 12-day journey, the airship navigated international airspace before concluding its mission with a controlled flight termination in international waters off the Brazilian coast.

During the flight, the HAPS spent more than 88 hours hovering over specific operational areas. This included one full day-night cycle (diurnal) over New Mexico and three consecutive diurnals off the coast of Brazil. The company noted in its release that the platform achieved a station-seeking radius as low as one kilometer, demonstrating precise navigational control.

Validating Core Technologies

A critical achievement of the Endurance Program was the successful closing of both the power and pressure loops. Sceye’s platform relies on solar power gathered during daylight hours to charge its onboard batteries, which then sustain operations throughout the night.

Additionally, the flight validated the structural integrity of the company’s first fully in-house manufactured hull. By maintaining vehicle pressure through multiple day-night cycles, Sceye has proven the viability of its design for extended missions in the harsh conditions of the stratosphere.

The Future of Stratospheric Infrastructure

The completion of the Endurance Program provides Sceye with the necessary data and configuration protocols to advance toward months-long, and eventually years-long, flights. This capability is essential for the company’s vision of creating a “cell tower in the sky” to bridge connectivity gaps and monitor environmental changes.

Sceye recently unveiled SceyeCELL, a stratospheric telecommunications antenna designed to deliver high-speed connectivity at scale. The ability to keep these antennas stationary over specific regions for extended periods could revolutionize disaster response and rural broadband access.

“This is the defining step toward unlocking the stratosphere as a new layer of infrastructure,” said Mikkel Vestergaard Frandsen, Founder and CEO of Sceye, in the company’s press release.

Pre-Commercial Flights on the Horizon

With the Endurance Program concluded, Sceye is shifting its focus to pre-commercial deployment. The company announced that its first pre-commercial test flight is scheduled to launch this summer in Japan.

This upcoming mission aims to establish a successful backhaul connection into SoftBank Corp.’s core network. The demonstration will also highlight the platform’s potential to provide expanded connectivity during emergency and disaster response scenarios.

AirPro News analysis

The successful 12-day flight of Sceye’s SE2 platform represents a maturing of High-Altitude Platform Systems (HAPS) technology. While the concept of stratospheric airships has been explored for decades, achieving reliable power management and structural durability over multiple day-night cycles has historically been a significant hurdle.

We believe Sceye’s ability to close the power and pressure loops using an in-house manufactured hull suggests that the industry is moving past the experimental phase. If the upcoming pre-commercial tests with SoftBank in Japan are successful, it could signal the beginning of a new era in telecommunications, where stratospheric platforms complement traditional ground towers and low-Earth orbit satellites.

Frequently Asked Questions

What is a High-Altitude Platform System (HAPS)?

A High-Altitude Platform System (HAPS) is an aircraft or airship that operates in the stratosphere, typically at altitudes around 60,000 feet. These platforms are designed to stay aloft for extended periods, providing services such as telecommunications, Earth observation, and weather monitoring.

How does Sceye’s platform stay powered at night?

According to the company’s press release, Sceye’s platforms use solar panels to generate electricity during the day. This energy is used to power the vehicle and charge onboard batteries, which then sustain the platform’s operations throughout the night.

When will Sceye begin commercial operations?

Sceye is preparing for its first pre-commercial test flights in the summer of 2026 in Japan, in partnership with SoftBank Corp. Full commercial deployment timelines have not been explicitly detailed, but the company is advancing toward months-long flight capabilities.

Sources

• Sceye