ILC Dover has been involved in the design and development of high-altitude airships since the early 1980s supporting development programs for the Navy and NASA. The subsequent growth of the cellular phone market generated renewed interest in the use of high-altitude airships as a means of providing economical coverage in developing countries. ILC has supported Lockheed Martin in the development of HAA vehicles including HALE-D (High Altitude Long Endurance Demonstrator).
We are also supporting DARPA’s ISIS (Integrated Sensor is Structure) high altitude program. Integrated Sensor Is Structure (ISIS) is a disruptive Command and Control, Intelligence, Surveillance and Reconnaissance (C2ISR) extremely large dual-aperture radar capability integrated in a fully autonomous stratospheric unmanned airship. Read more about this program at Lockheed Martin's ISIS site.