There was even a Javelin aeroplane, one of the first big jets too!  A two-seater all-weather fighter capable of speeds considerably in excess of Mach 1.0, the Gloster Javelin first flew in 1951 and was the world's first twin-jet delta-wing aircraft.  The one above is at Duxford Air Museum near Cambridge.  How fast does it get from 0 to 60 though?   That's what I really want to know!   Answers on a postcard please to the usual address.   It could climb to 40,000 foot in just 7.9 minutes though, which is pretty impressive for an aircraft weighing nearly 20 ton.

Weights & capacities varied for the different models, early mk.1 was listed at 37,700 lbs. with 1,265 gallons of fuel on board (including 500 gallons in external drop tanks slung underneath).   Later mk.5 & mk.6 models could carry 1,455 gallons in the same configuration and weighed 39,500 lbs. (17.9 tonnes / 19.7 ton).   Even with that weight, the powerful twin jet engines with over 8,000 lbs. of static thrust each would propel the Javelin to around 610mph (over mach 1) with a range of approx. 1,440 miles (1,250 nautical miles), gobbling fuel at around 1 mile per gallon! Imagine filling that up at UK pump prices, that's over 6,600 litres for a fill-up which lasts little over 2 hours running time... makes my V8 sound quite economical!

The drawings below are from a first-day cover envelope.