Editing Ramjet (section)

===United Kingdom===
[[File:Bloohound BL 64.jpg|thumb|Upper engine is a ramjet on the Bloodhound missile]]

In the late 1950s, 1960s, and early 1970s, the UK developed several ramjet missiles.

The [[Blue Envoy]] project was supposed to equip the country with a long range ramjet powered air defense against bombers, but the system was cancelled. It was replaced by a shorter range ramjet missile system called the [[Bloodhound (missile)|Bloodhound]]. The system was designed as a second line of defense in case attackers were able to bypass the fleet of defending [[English Electric Lightning]] fighters.

In the 1960s the Royal Navy developed and deployed a ramjet powered surface to air missile for ships called the [[Sea Dart]]. It had a range of {{convert|40|-|80|mi|km|order=flip|round=5}} and a speed of Mach 3. It was used successfully in combat against multiple types of aircraft during the [[Falklands War]].

====Fritz Zwicky====
Eminent Swiss astrophysicist [[Fritz Zwicky]] was research director at [[Aerojet]] and holds many patents in jet propulsion. Patents {{Patent|US|5121670}} and {{Patent|US|4722261}} are for [[ram accelerator]]s. The U.S. Navy would not allow Zwicky to publicly discuss his invention, {{Patent|US|2461797}} is for the Underwater Jet, a ram jet that performs in a fluid medium. ''[[Time (magazine)|Time]]'' magazine reported on Zwicky's work.<ref name="Missed Swiss">{{cite web |title=Missed Swiss |author=<!--Not stated--> |date=July 11, 1955 |publisher=Time Inc. |url=https://content.time.com/time/subscriber/article/0,33009,807355,00.html |access-date=August 27, 2017}}</ref><ref name="Underwater Jet">{{cite web |title=Underwater Jet |author=<!--Not stated--> |date=14 March 1949 |publisher=Time Inc. |url=https://content.time.com/time/subscriber/article/0,33009,794705,00.html |access-date=August 27, 2017}}</ref>