BAE Systems PHASA-35
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| name = PHASA-35 | image = File:BAE_Systems_PHASA-35_concept.jpg | caption = Concept image of the aircraft in flight. }}{{Infobox aircraft type | type = High-Altitude Long Endurance unmanned aerial vehicle | national origin = United Kingdom | manufacturer = BAE Systems / Prismatic | designer = | first flight = 17 February 2020 | introduced = | produced = 2018{{endash}}present | retired = | number built = | primary user = | status = | unit cost = | developed from = | variants with their own articles = }} |
The BAE Systems Persistent High Altitude Solar Aircraft (PHASA-35) is a High-Altitude Long Endurance (HALE) unmanned aerial vehicle (UAV) developed by BAE Systems in collaboration with Prismatic. Designed as a cheaper alternative to satellites, the aircraft can be used for surveillance, border control, communications and disaster relief with a potential ability to stay airborne for up to 12 months. Developed in less than two years, the aircraft carried out its first flight in February 2020 and further trials are currently ongoing.
Development
PHASA-35 was originally designed and developed by engineers who had previously worked on the Zephyr HAPS drone for Qinetiq. When Qinetiq sold Zephyr to Airbus Defence and Space in 2013, these engineers left and formed their own company, named Prismatic, to develop a rival aircraft.{{cite news |last1=Pocock |first1=Chris |title=British HAPS Projects Aim for the Solar Heights |url=https://www.ainonline.com/aviation-news/aerospace/2022-07-15/british-haps-projects-aim-solar-heights |access-date=26 July 2022 |work=AINonline |date=15 July 2022}} Development of PHASA-35 consequently began in 2018, in collaboration with BAE Systems, and a first flight was scheduled for 2019. Prior to this, a quarter-scale model, named the PHASE-8, completed a successful first flight in 2017. In September 2019, BAE Systems acquired Prismatic as a subsidiary.{{cite news |title=BAE Systems acquires solar drone partner Prismatic |url=https://www.theengineer.co.uk/bae-prismatic-phase-35/ |access-date=2 December 2020 |work=The Engineer |date=10 September 2019}} After less than two years in development, the PHASA-35 made its maiden flight on 17 February 2020 at the Woomera Test Range in Australia with support from the UK's Defence Science and Technology Laboratory and Australian Defence Science and Technology Group.{{cite news |title=Ground-breaking solar powered unmanned aircraft makes first flight |url=https://www.baesystems.com/en/article/ground-breaking-solar-powered-unmanned-aircraft-makes-first-flight |access-date=2 December 2020 |work=BAE Systems |date=17 February 2020}} Further trials commenced and, in October 2020, the aircraft carried out an endurance trial whilst carrying a sensor payload. The trials saw the aircraft operating 72 hours whilst in a simulated environment of harsh stratospheric conditions.{{cite news |title=PHASA-35 successfully completes critical endurance trials with sensor payload |url=https://www.suasnews.com/2020/10/phasa-35-successfully-completes-critical-endurance-trials-with-sensor-payload/ |access-date=2 December 2020 |work=sUAS News |date=14 October 2020}}
In January 2021, BAE Systems announced plans to carry out a flight demonstration in the United States after acknowledging “strong growing interest” in the aircraft from across the U.S. Department of Defense and federal agency customer base.{{cite news |url=https://aviationweek.com/defense-space/space/bae-plans-us-phasa-35-demonstrations |title=BAE Plans U.S. PHASA-35 Demonstrations |work=Aviation Week |date=25 January 2021 |accessdate=26 January 2021 }}
By December 2024, it had flown for 24h and reached more than {{cvt|66,000|ft|m}} from Spaceport America in New Mexico, targeting operational activity by 2026.{{cite news |url= https://www.flightglobal.com/defence/bae-details-latest-test-success-with-high-flying-phasa-35/161180.article |title= BAE details latest test success with high-flying PHASA-35 |author= Craig Hoyle |date= 19 December 2024 |work= Flight Global}}
Design
The aircraft is a solar-electric HALE UAV designed as a cheaper alternative to satellites and is able to carry out a range of tasks, including border protection, maritime and military surveillance, disaster relief and communications.{{cite news |title=PHASA-35 |url=https://www.baesystems.com/en/product/phasa-35# |access-date=2 December 2020 |work=BAE Systems}} It is powered by the sun during the day, before switching to battery power during the night and can potentially stay airborne for 12 months. Featuring long-life battery technology, ultra-lightweight solar cells, a {{convert|35|m|ft|adj=on}} wingspan and a weight of {{convert|150|kg|lb}}, the aircraft is designed to operate in the stratosphere.{{cite news |title=Solar UAV to be developed with the potential to stay airborne for a year |url=https://www.baesystems.com/en/article/solar-uav-to-be-developed-with-the-potential-to-stay-airborne-for-a-year |access-date=2 December 2020 |work=BAE Systems |date=3 May 2018}}
See also
References
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Category:Solar-powered aircraft
Category:Unmanned military aircraft of the United Kingdom
Category:High-altitude platform stations
Category:BAE Systems research and development
Category:Twin-engined tractor aircraft
Category:Aircraft with conventional landing gear