The Avro Blue Steel was a British air-launched, rocket-propelled nuclear stand-off missile, built to arm the V bomber force.

Avro Blue Steel nuclear missile ( front ) at the Midland Air Museum

Avro Blue Steel missile ( side view ) at the Midland Air Museum behind the wing of an Avro Vulcan bomber

Rear view of Blue Steel missile at RAF Cosford aerospace museum, showing the twin-chamber " Stentor " rocket motor

Blue Steel was the result of a Ministry of Supply memorandum from 5 November 1954 that predicted that by 1960 Soviet air defences would make it prohibitively dangerous for V bombers to attack with nuclear gravity bombs.

Avro began work proper in 1955, with the assigned Rainbow Code name of " Blue Steel " which it would keep in service.

The large girth of Blue Steel was determined by the implosion sphere diameter of Green Bamboo.

Avro proposed that Blue Steel would evolve over time, subsequent versions increasing speed ( to Mach 4. 5 ) and range.

The ultimate Blue Steel would be a range weapon that could be launched by the supersonic Avro 730 under development.

Blue Steel emerged as a pilotless, winged aircraft roughly the size of the experimental Saunders-Roe SR. 53 interceptor, with clipped delta wings and small canard foreplanes.

Blue Steel finally entered service in February 1963, being carried by Vulcans and Victors, although its limitations were already apparent.

A replacement for Blue Steel, the Mark 2, was planned with increased range and a ramjet engine, but was cancelled in 1960 to minimise delays to the Mk. 1.

With no effective long-range weapon the original Blue Steel served on after a crash programme of minor modifications to permit a low-level launch at, even though its usefulness in a hot war was likely limited.

This WE. 177 laydown weapon supplemented the remaining modified Blue Steel missiles using a low-level penetration followed by a pop-up manoeuvre to release the weapon at Forty-eight live operational rounds were deployed on 48 Vulcan and Victor bombers plus a further five live rounds as operational spares.

Blue Steel was officially retired on 31 December 1970, with the United Kingdom's strategic nuclear capacity passing to the submarine fleet.

* Video of Blue Steel in operation

* The Vulcan Gets New Striking Power an AVRO advertisement for the Vulcan from Flight in February 1959, showing the ( still unnamed ) Blue Steel.

*" Blue Steel And Its Engine " a 1960 Flight article on the Blue Steel

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On 22 May 2011, The Blue Angels were performing at the Lynchburg Regional Airshow in Lynchburg, Virginia, when the Diamond formation flew the Barrel Roll Break maneuver at an altitude that was lower than the required minimum altitude.

The gap allows U. S. Highway 441 to cross the range at an elevation of 2168 feet without the significant grade required by roadways at most other mountain passes along the Georgia Blue Ridge.

All that's required is the most cursory examination of USAF Project Blue Book records available since July 1967.

Red arrow: gravity Green arrow, the normal force Blue arrow: the resultant force The resultant force provides required centripetal force.

In her third movie role, Blue Murder at St Trinian's ( 1957 ) she had a non-speaking role in which, despite sharing equal billing with the star Alastair Sim on posters and appearing in many publicity stills in school uniform, she was required only to sit up in bed wearing a nightdress, reading a book whilst the action took place around her.

Recipients of the Blue Max were required to wear the award whenever in uniform.

A Federal Communnications Commission decision in 1939 required NBC to divest itself of its Blue Network.

Because fewer rail cars were required to operate Yellow Line service than would be required to run Blue Line service out to Huntington – due to the Yellow Line's shorter route – the line designations were switched.

Because fewer rail cars were required to operate Yellow Line service than would be required to run Blue Line service out to Huntington – due to the Yellow Line's shorter route – the line designations were switched.

In 1942, under the provisions of the Sherman Anti-Trust Act, NBC was required to divest itself of its Blue Network, which later became The Blue Network Incorporated, and subsequently The American Broadcasting Company.

The overall gameplay of Blue Shift does not significantly differ from that of Half-Life: players are required to navigate through the game's levels, fight hostile non-player characters and solve a variety of puzzles to advance.

Ktunaxa social life as observed by the anthropologists consists of vision quests, reverence of tobacco, a Sun Dance, and Grizzly Bear Dance, a midwinter festival, a Blue Jay Dance and other social and ceremonial activities .< sup > citation required </ sup > There were different societies or lodges that people belonged to, such as The Crazy Dog Society, the Crazy Owl Society, and the Shamans ’ Society.

The mountainous terrain of the Blue Mountains and the expense of building long tunnels required the construction of The Great Zig Zag railway between 1866 and 1869.

Solid-fuelled and generally comparable to Blue Water, although it was more complex and slower to operate and, like Corporal, still required a train of semi-trailer vehicles.

Monte Blue was in the cast and noticed Moore could not mount her horse, though horseback riding was required for the part ( during casting for the part she neglected to mention she did not know how to ride.

* Tennessee Blue Book Online – Modern and graphical interpretation of the Tennessee State Constitution ( Adobe Acrobat Reader required )

Charlottesville paid $ 15, 000 of the $ 32, 000 required for the procurement of the property and funded Blue Ridge ’ s water supply.

For example, in the creation of Shenandoah National Park and the Skyline Drive between 1924 and 1936, a number of families and entire communities were required to vacate portions of the Blue Ridge Mountains, mostly by actions of the Commonwealth of Virginia, which then ceded land to the federal government.

Price had nearly 500 wagons with him, and required a good ford over the Blue River to facilitate passage of his supplies.

Price had nearly 500 wagons with him, and he required a good ford over the Big Blue River to facilitate the passage of his supplies.

On June 25, 2007, all Coast Mountain and West Vancouver Blue Buses were designated " fare paid zones ", meaning that passengers are legally required on demand to produce proof that they have paid the proper fare.