Ministry of Defence · Contracts Finder
Closed

Tender: Project CALLISTO — Design and Ground Testing of Affordable Single-Use Engines (750N & 1.8–2kN Lots)

Released 4 months ago

Closed27 Jul 2026
Est. valueEstimate£35K to £6.9M
LocationUnited Kingdom
SourceContracts Finder
CategoryDefense & Aerospace
Submissions closedClosed Mon, 27 July 2026

Project CALLISTO is seeking a supplier for affordable, single-use engines for current and future air systems, munitions and One Way systems to bridge the performance gap between hobbyist/model aircraft engines and higher-performance, longer-life engines. This phase covers design, development and ground testing (in appropriate engine test facilities) of four prototype engines; the engines must be affordable and scalable and any future scaled production will be subject to a separate procurement. The competition is split into two lots: LOT 1 CALLISTO LIGHT (750 N) and LOT 2 CALLISTO HEAVY (1.8–2 kN); tenderers may bid for one or both lots. Full requirement details and dates are in the linked ITT and tenderers must submit an ITT on the Defence Sourcing Portal by the specified closing date.

This could be ideal for propulsion developers experienced in designing and ground-testing prototype expendable/one-way engines. Key considerations include meeting the affordability and scalability requirement, delivering four prototype engines with appropriate ground testing arrangements, and noting that production is not included in this procurement.

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