Project Vixen

Project Vixen is the name of a Royal Navy programme examining the use of fixed-wing unmanned aerial vehicles (UAVs) from its two aircraft carriers. The project likely draws its name from the de Havilland Sea Vixen, notable for being the Royal Navy's first two-seat carrier-based aircraft capable of supersonic flight.
Background.
The Royal Navy operates two aircraft carriers of the , and . Both of these ships feature a short take-off and vertical landing (STOVL) configuration which means they are limited to operating STOVL aircraft, such as the Lockheed Martin F-35B Lightning II, or helicopters. This has presented the Royal Navy little choice in aircraft to undertake air-to-air refuelling, carrier on-board delivery and airborne early warning missions, which are better suited to heavier catapult-assisted barrier arrested recovery (CATOBAR) aircraft. Fixed-wing UAVs, however, are typically lighter than conventional aircraft and, due to this, they have been considered for these missions by the Royal Navy. In 2012, speaking on the behalf of the Ministry of Defence (MOD), Defence Minister, Philip Dunne, stated publicly that he expected the Royal Navy to utilise UAVs from the "Queen Elizabeth"-class "at some point during their 50-year lifespans". When questioned about the prospect again, in 2016, another Defence Minister, Earl Howe, stated that the Royal Navy viewed them as an "operational advantage", adding that the "Queen Elizabeth"-class had extensive flight decks, hangars and engineering support facilities to accommodate them. He also revealed that the Royal Navy had evaluated capability concept demonstrators with Joint Forces Command in 2015. In January 2021, it was reported that the Royal Navy was seeking a heavy lift UAV for the aircraft carriers to assist with logistics.
Overview.
On 24 March 2021, Project Vixen was first revealed to the public as a programme to evaluate the use of fixed-wing UAVs from the "Queen Elizabeth"-class. The programme is reportedly examining their use in strike and air-to-air refuelling missions. During the same month, the MOD also issued a Request For Information (RFI) to the defence industry for electromagnetic catapults and arrestor cables capable of launching and recovering aircraft with a maximum weight of and , respectively. The RFI also specified a need to install the system to the aircraft carriers within threefive years. Due to being somewhat underpowered for manned fighter aircraft, like the F-35C, the system is more likely to be used for UAV's.
According to an official Royal Navy publication, titled "Future Maritime Aviation Force", which was originally published in December 2020, the Royal Navy aims to replace its helicopter-based airborne early warning (AEW) platform, the Merlin HM2 Crowsnest, with a fixed-wing UAV, currently known as Vixen, by 2030. The Royal Navy also expects to utilise Vixen in surveillance, air-to-air refueling, electronic warfare and strike roles.