edit: sources https://en.wikipedia.org/wiki/SA80#Service_and_modification
https://en.wikipedia.org/wiki/Boeing_Chinook_(UK_variants)#C...
https://en.wikipedia.org/wiki/Eurofighter_Typhoon#Delays
https://en.wikipedia.org/wiki/Queen_Elizabeth-class_aircraft...
This is hardly a design fault. Instead, how about Type-45 destroyer gas turbine engines suffering from overheating in gulf/Mediterranean temperatures.
Remember the audacious class that could fly an array of aircraft, as well as being inter-operable with our NATO allies (our aircraft could land on their ships)[1]. I suppose that is true in a way with the QE2, as only our NATO partners aircraft will fly off it for some years...because we don't have any.
[0]https://www.washingtonpost.com/news/checkpoint/wp/2018/01/11...
[1]https://en.wikipedia.org/wiki/HMS_Ark_Royal_(R09)#Aircraft_a...
The aircraft are expected to begin trials flying from Queen Elizabeth in 2018 with a carrier air wing fully operational by 2020
So what it's saying is that the new set of aircraft won't be fully delivered until 2020, but given the very long timescales associated with building an aircraft carrier and designing and building a new carrier air group in this case, is that such a big procurement failure? The HMS QE is still engaged in sea trials throughout 2018 anyway.
Also it can carry US planes and will do so sometimes.
Yes it is planned to work up the ship for operational deployment using USMC F35's if they are available in time.
Regarding the long timescale, the Audacious class Ark Royal carrier had an operational life of 24 years, so I would say not having the air wing ready until 3 or 4 years after commissioning is a pretty serious procurement issue. You have to remember that the UK does't have any carrier pilots (unless seconded to the US, but certainly not a squadron) waiting to just do a type conversion, you would have hoped that some aircraft were available to work up pilots before the ships are commissioned.
This is also ignoring the cats-and-traps vs VTOL debacle and the propulsion debacle that delayed both carriers. It makes you wonder actually, had the carriers not been delayed by this, they may have been ready even more years before the aircraft
[0]http://www.theregister.co.uk/2016/09/09/usmc_will_fly_f35s_o...