Blue Envoy

Blue Envoy (a Rainbow code name) was a British project to develop a ramjet-powered surface-to-air missile during the 1950s. It was cancelled in April 1957. The guidance system and the ramjet designs were used to upgrade the Bloodhound Mk 1 missile design to produce the Bloodhound Mk 2.

References

1. ↑ "Bristol Blue Envoy". Skomer. Archived from the original on 2012-04-12. Retrieved 2012-09-28. 
2. ↑ "Blue Envoy". This is Rocket Science. Retrieved 2012-09-28. 

Guided missiles of the United Kingdom
Air-to-air	ASRAAM Fireflash Firestreak Red Dean Red Top SRAAM/Taildog Skyflash
Air-to-surface	ALARM Brimstone Lightweight Multirole Missile Martel1 Sea Eagle Sea Skua Storm Shadow1 Sea Venom1 SPEAR 3
Surface-to-air	Bloodhound Blowpipe CAMM Javelin Rapier Seacat Sea Dart Seaslug Sea Viper Sea Wolf Starburst Starstreak Tigercat Thunderbird
Surface-to-surface	Swingfire Malkara2 UB.109T Vigilant
Nuclear	Blue Steel Blue Streak Blue Water Green Cheese
1 Anglo-French   2 Anglo-Australian

Cold War military projects of the United Kingdom
Air-to-air missiles	Blue Sky (Fireflash) Blue Jay (Firestreak) Red Dean Red Top SRAAM Skyflash
Air-to-surface missiles	Blue Steel Green Cheese
Surface-to-air missiles	CF.299 (Sea Dart) Green Light (Sea Cat) Red Duster (Bloodhound) Red Shoes (Thunderbird) Sea Slug
Surface-to-surface missiles	Blue Slug Blue Streak Blue Water Blue Rapier / Red Rapier Orange William (Swingfire)
Satellite launch vehicles	Black Arrow Black Knight
Nuclear warheads	Blue Danube Blue Peacock Orange Herald Red Beard Red Snow Violet Club Yellow Sun
List of codenames used for projects (Rainbow Codes)