High-Altitude Platforms / Systems or Stations / High-Altitude Pseudo-Satellite (HAPs)
“A high-altitude platform station also known as atmospheric satellite, is a long endurance, high altitude aircraft able to offer observation or communication” – Wikipedia: High-altitude platform station

“The Integrated Sensor is Structure (ISIS) was a program managed by the United States Air Force (USAF) Research Laboratory to research the feasibility of using an unmanned airship as a high-altitude aerial reconnaissance and surveillance platform. It is sometimes called Integrated Sensor is the Structure, as a fundamental innovation was the use of the airship structure as the sensing component of a state-of-the-art radar system.” Wikipedia: Integrated Sensor is Structure
- High-Altitude Platform Systems – Alternative, Supplement, or Competition to Satellites? By Lieutenant Colonel Heiner Grest , GE AF Joint Air Power Competence Centre (2015-2023) Published: July 2022 in Journal Edition 34 … HAPS can be described as crewed or uncrewed flying objects, positioned in the Near Space to take advantage of the weak stratospheric winds and the high solar …
- High-altitude platform station (HAPS) systems can potentially be used to provide both fixed broadband connectivity for end-users and transmission links between …
- Modern Airships – Part 1 – Peter Lobner, updated 17 January 2025
- Modern Airships – Part 2 – Peter Lobner, updated 17 January 2025
- Army Considering High Altitude Platforms by Sandhya Singh, July 25, 2024

- AFWERX Gives Greenlight to Build Hybrid LTA ORB Prototype – sUAS News, Jul 21, 2022, Patrick Egan
- LTA Hybrid Electric Orb for Urban Air Mobility – Patrick Egan (2022)
- Vacuum Airships (Reddit) August 2022
- High Altitude Airship: A Review of Thermal Analyses and Design Approaches – Review article, Published: 24 December 2022 Volume 30, pages 2289–2339, (2023)
- High-Altitude Platforms — Present Situation and Technology Trends – Flavio Araripe d’Oliveira – Departamento de Ciência e Tecnologia Aeroespacial, Brazil (May/June 2016)
- Lockheed Martin Lighter-Than-Air Programs, Keck Institute for Space Studies JPL – Aerostats / Hybrid Airships / Stratospheric Airships, Caltech Airship Workshop – 30 April – 3 May 2013 / (PDF)
See also…
- Aerogel (and possible aerogel-drones)
- Drone Types – Know Your Drones
- Mystery Airships
- Mystery Drone Flaps