Japan to upgrade 68 F-15J Eagles under JSI programme

by Kosuke Takahashi

An artist's impression of the JSI configuration for Japan's fleet of upgraded F-15J Eagle fighters. (Boeing)

The Japanese Ministry of Defense (MoD) plans to upgrade 68 Boeing-Mitsubishi F-15J Eagle fighter aircraft through the Japan Super Interceptor (JSI) programme, it confirmed on 4 February.

The MoD also said that the estimated life-cycle costs of the 68 Japan Air Self-Defense Force (JASDF) aircraft over 30 years – including the upgrade – will amount to JPY646.5 billion (USD5.6 billion).

An MoD document said the upgrade includes the integration of long-range stand-off missiles, radars that can lock multiple targets simultaneously, an increased munitions payload, and enhanced electronic warfare capability.

According to Japan's 2021 defence white paper, the JASDF operated, as of March 2021, a total of 201 single-seat F-15Js and twin-seat F-15DJs. The MoD has previously upgraded the combat capabilities of 102 of these aircraft: 68 F-15Js and 34 F-15DJs.

The remaining 99 aircraft are to be replaced by 147 Lockheed Martin F-35 fighter aircraft – 105 F-35As and 42 F-35Bs – during the coming decade.

An official from the MoD's Acquisition, Technology & Logistics Agency (ATLA) told Janes


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US Army options Textron Systems, Griffon Aerospace to fly FTUAS competitors

by Zach Rosenberg

Textron Systems' Aerosonde UAV. (Textron)

The US Army on 25 April declared Option 2 of the Future Tactical Uncrewed Aircraft System (FTUAS) Rapid Prototyping Program finished, exercising Options 3 and 4 for both Textron Systems and Griffon Aerospace to build and test production-representative Aerosonde Mk 4.8 and Valiant UASs respectively.

“FTUAS program Options 3 and 4 give us the opportunity to demonstrate our Aerosonde Mk 4.8 HQ [Hybrid Quadrotor] UAS and further advance its capabilities before delivering a system for customer test and evaluation,” said Wayne Prender, Textron Systems' senior vice-president for Air Systems, in a statement.

Griffon Aerospace told Janes that the company was “honoured and excited” to be included in the award but declined to respond to further questions.

Five companies competed for the initial FTUAS contract, of which only two – Griffon Aerospace and Textron Systems – made the Option 2 cut-off.

In September 2023 the US Army selected the Griffon Aerospace Valiant and Textron Systems Aerosonde Mk 4.8 HQ for the second phase of FTUAS, which advanced the two designs through critical design review (CDR), the last step before building and testing a prototype aircraft.


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UK to seek additional F-35 acquisition phases

by Gareth Jennings

The UK has touted the prospect of additional procurement batches of the F-35 as it looks to fulfil its 138-aircraft programme of record. (Crown copyright)

The UK government has said that the Ministry of Defence (MoD) will seek additional acquisition phases for the Lockheed Martin F-35 Lightning combat aircraft, beyond the phase currently contracted and the one now in negotiation.

The Earl of Minto Gilbert Timothy George Lariston Elliot-Murray-Kynynmound, minister of state at the MoD, said in early April that approval for further procurement tranches of the F-35 will be sought as the UK moves towards its planned 138-aircraft buy over the life of the programme.

“Our plan remains to procure 138 aircraft through the life of the programme. This procurement is phased; our first acquisition phase of 48 aircraft is under way at present, with the second phase consisting of a further 27 aircraft now progressing through the approvals process, which will form the basis of our third front-line Lightning squadron with deliveries expected to continue into 2033. The MoD will seek approval for further acquisition phases at the appropriate time,” the minister said.


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UK explores new radar and IR tech to enhance SDA

by Olivia Savage

UK company Spaceflux has been contracted to develop and operate a ground-based SDA sensor as part of Project Nyx Alpha to monitor objects in GEO for UK Space Command. (Spaceflux)

The UK's Defence Science and Technology Laboratory (Dstl) is conducting three technology demonstrator programmes to explore the utility of novel space domain awareness (SDA) technologies.

The first programme is exploring the development of a Deep Space Radar (DSR) designed to monitor and protect geostationary orbit (GEO) assets such as the Skynet satellite communications system, William Feline, senior principal advisor for SDA at the UK Ministry of Defence (MoD), said at the Military Space Situational Awareness Conference 2024, held in London from 22 to 24 April.

The purpose of the programme is also to assess whether the UK needs its own DSR capability or whether it can rely on or complement the Deep Space Advanced Radar Capability (DARC) currently being developed alongside Australia and the US, Emma Kerr, senior principal engineer for SDA at Dstl told Janes .

A monostatic or biostatic system is being considered as well as whether a new or existing system is required, Feline said.


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The Japanese Ministry of Defense (MoD) plans to upgrade 68 Boeing-Mitsubishi F-15J Eagle fighter air...

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