Advancing UK Aerospace, Defence, Security & Space Solutions Worldwide

Aerospace

PHASA-35 makes maiden flight

Persistent High Altitude Solar Aircraft (PHASA-35), a 35-metre wingspan solar-electric aircraft which has the potential to stay airborne for a year, has successfully completed its maiden flight.


Courtesy BAE Systems

The landmark flight paves the way to this new aircraft becoming a game changer in the air and space market, plugging the gap between aircraft and satellite technology.    

PHASA-35 has been designed, built and now flown in less than two years as part of a collaboration between BAE Systems and Prismatic Ltd - a technology SME based in Hampshire, specialising in the design, prototyping and demonstration of innovative, high value aerospace products and systems - which BAE Systems agreed to acquire last year.

Advertisement
ODU RT

Designed to operate unmanned in the stratosphere, above the weather and conventional air traffic, PHASA-35 offers a persistent and affordable alternative to satellites combined with the flexibility of an aircraft, which could be used for a range of valuable applications including forest fire detection and maritime surveillance.   

Sponsored by the UK’s Defence Science and Technology Laboratory (DSTL) and Australian Defence Science and Technology Group (DSTG), the successful flight trials took place at the Royal Australian Air Force (RAAF) Woomera Test Range in South Australia. 

The trials marked the first fully integrated flight test of the PHASA-35 system, delivering rapid proof of capability from design to flight in just 20 months. They are the culmination of efforts from a collaborative team of British experts from Prismatic in Hampshire - where two full-sized concept aircraft were built last year - working alongside BAE Systems engineers in Lancashire, where the aircraft underwent further integration testing prior to flight trials. 

As a High Altitude Long Endurance (HALE) vehicle, PHASA-35 is powered by the Sun during the day and by batteries overnight. The long-life battery and highly efficient solar technology could allow the aircraft to maintain flight for up to a year operating in the stratosphere, the upper regions of the Earth’s atmosphere.

PHASA-35 is designed to provide a persistent, stable platform for monitoring, surveillance, communications and security applications.  When connected to other technologies and assets, it will provide both military and commercial customers with capabilities that are not currently available from existing air and space platforms. The Unmanned Air Vehicle also has the potential to be used in the delivery of communications networks including 5G, as well as provide other services, such as disaster relief and border protection, at a fraction of the cost of satellites. 

Ian Muldowney, Engineering Director for BAE Systems, said: “This is an outstanding early result that demonstrates the pace that can be achieved when we bring the best of British capability together. To go from design to flight in less than two years shows that we can rise to the challenge the UK Government has set industry to deliver a Future Combat Air System within the next decade.”

BAE Systems’ acquisition of Prismatic forms part of the Company’s strategy to develop breakthrough technologies, making bolt-on acquisitions where they complement existing capabilities and provide an opportunity to accelerate technology development in key areas. 

Advertisement
Leonardo animated rectangle

Further flight trials are scheduled for later this year, with the possibility that the aircraft could enter initial operations with customers within 12 months of the flight trials programme completion.

 

 

 

Advertisement
General Atomics LB
Britten-Norman BN2T-4S Islander approved by TCAA

Aerospace

Britten-Norman BN2T-4S Islander approved by TCAA

2 December 2025

UK aircraft manufacturer Britten-Norman has received Transport Canada Civil Aviation (TCCA) type certification for the BN2T-4S Islander, the Rolls-Royce Model 250–powered turboprop variant of the company’s iconic utility aircraft.

CAA confirms summer 2025 busiest ever for UK aviation

Aerospace

CAA confirms summer 2025 busiest ever for UK aviation

2 December 2025

The Civil Aviation Authority’s latest aviation trends report confirms that 2025 saw the busiest summer ever for UK aviation.

UK Airlines minimise A320 maintenance disruption

Aerospace

UK Airlines minimise A320 maintenance disruption

2 December 2025

The UK Civil Aviation Authority provided an update on precautionary maintenance action required for some of the global Airbus A320 fleet, following the publication of an Alert Operators Transmission (AOT) on 28th November calling for immediate precautionary action on a number of in-service A320 Family aircraft.

Anotec achieves JOSCAR accreditation

Aerospace Defence

Anotec achieves JOSCAR accreditation

2 December 2025

Advanced surface coating specialist Anotec has strengthened its compliance across aerospace and defence, by achieving JOSCAR accreditation.

Advertisement
Tritax 300x250
IATA reports accelerating passenger and cargo demand growth in October

Aerospace

IATA reports accelerating passenger and cargo demand growth in October

1 December 2025

Data for October 2025 released by the International Air Transport Association (IATA), shows global passenger demand growth accelerated to 6.6%, whilst cargo demand set a new record, rising by 4.1%.

QinetiQ Powerboat Challenge 2025 tests students skills

Aerospace Events

QinetiQ Powerboat Challenge 2025 tests students skills

28 November 2025

QinetiQ’s annual Schools Powerboat Challenge has put students’ engineering and piloting skills to the test.

Advertisement
Tritax 300x250