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BAE Systems partners to develop solar UAV that can stay aloft for one whole year

A new solar electric unmanned aerial vehicle (UAV), which has the potential to fly for up to a year before needing maintenance, has become a step closer to reality following a recent agreement between two cutting-edge British companies: BAE Systems and Prismatic Ltd.

Engineers from Prismatic and BAE Systems will collaborate on the development of the new solar-powered High Altitude, Long Endurance (HALE) UAV known as PHASA-35, with work already underway to prepare the first aircraft to be ready for flight tests in 2019.

The technology would offer a year-round, low-cost, persistent service for a wide range of needs, including surveillance and vital communications to remote areas, using only the sun to power the aircraft during the day and recharge the batteries for overnight operation.

Solar HALE vehicles offer a significantly cheaper alternative to conventional satellite technology, with PHASA-35 (standing for Persistent High Altitude Solar Aircraft), being a concept solar electric UAV that uses proven, long-life battery technology and ultra-lightweight solar cells to potentially maintain flight for up to 12 months.

The PHASA-35 concept has a 35-m wingspan and weighs just 150 kg (330 lb). Its lightweight, efficient build allows it to fly at high altitudes for long periods of time.

A quarter-scale model (named PHASE-8) completed a successful maiden flight in 2017, with Prismatic and BAE Systems now looking to take the technology a step further.

BAE Systems will invest in the development and flight testing of the PHASA-35 system as part of its drive to continually develop new technologies to support aircraft of the future, working collaboratively with SMEs and academia.

BAE Systems has a portfolio of patents and patent applications covering approximately 2,000 inventions internationally, and under the agreement with Prismatic it will provide expertise in aerospace technology and project management to progress the PHASA-35 program through to a marketable offering.

Source: BAE Systems

Published June 2018

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