Update on Dreadnought
Highlights taken from the 2018 Update to Parliament, the seventh annual update - The United Kingdom’s Future Nuclear Deterrent:
Remains within budget and on track for the First of Class, HMS Dreadnought, to enter service in the early 2030s // The programme entered Delivery Phase 2 in April // continuation of the manufacture of the first submarine, and commencement of the build of the second (Valiant), and the manufacture of Dreadnought's nuclear propulsion power plant. // The major subcontract commitments planned under this Phase include gearboxes, main engines and generators // Construction of the main pressure hull units for Dreadnought are progressing well // there have been technical complications with the manufacturing of the missile tubes to be used in the Common Missile Compartment being developed for our submarines and the United States' Columbia Class.
To date £5.5 billion has been spent so far on the concept, assessment, and early delivery phases - £1.2 billion of which was spent in Financial Year 2017/18. // The 2015 Strategic Defence and Security Review estimated that the programme is likely to cost a total of £31 billion (including inflation over the lifetime of the programme), and set a contingency of £10 billion. // The National Audit Office reported the expected total spend on supporting the "Enterprise" as £50.9 billion between 2018 and 2028.
International other than US
In France, infrastructure to support the TEUTATES Treaty continues. The UK Explosives Storage was formally opened in September at the French Atomic Energy Commission’s Epure facility at Valduc. Construction of the UK Office Block will be complete before the end of the year and the UK Eyes Only facility for the assembly of UK hydrodynamic experiments will go operational in the first half of 2019. // Cooperation with France under the TEUTATES Treaty is progressing. This will deliver a hydrodynamic capability to conduct experiments ensuring our nuclear weapons remain safe and effective.
In April, the Submarine Delivery Agency became a new Executive Agency of the Department established solely for the procurement, in-service support and disposal of submarines. // Also in April, the Department established the Dreadnought Alliance: a joint management team between the Submarine Delivery Agency, BAE Systems and Rolls-Royce.
Mentions generators so may be all electric drive as with the USN new Columbia SSBN class, if so no mention of electric motor, the USN did have overheating problems with EM for Columbia under test, claimed not to have thrown the “no-margin-for-error” program off-schedule. Also presuming its a version of the DRS PMM (more compact than AIM design) 36.5M developed for Zumwalt, but early test problems led to it being replaced by GE’s Power Conversion/Converteam/Alstom Advanced Induction Motors. Also mention of development of gearbox, so looks like RR not going forward with the Magnomatics and its highly efficient and compact magnetic Pseudo Direct Drive (PDD) for marine applications, RR involved in development, my understanding PDD would have enabled deletion of prop shaft and noisy gearbox, but it would be high risk as PDD still in R&D and unproven.
The US build Columbia Trident missile launch tubes to be used by Dreadnought found with defective welding causing a ten mouth delay, so slightly surprised report can claim remains on track unless enough slack built into programme.https://assets.publishing.service.gov.u ... iament.pdf