Perfectly-timed photograph captures moment US Air Force jet creates its own CLOUD

Sonic PLUME! Perfectly-timed photograph captures moment US Air Force F15 Strike Eagle fighter jet creates its own CLOUD over Welsh mountains

  • An F15 ‘Strike Eagle’ jet from RAF Lakenheath, Suffolk was spotted by amateur photographer Wayne Lewis
  • The 38-year-old shot the pictures in a military low-fly area in the mountains of North Wales near to Dolgellau
  •  Rare phenomenon occurs when an aircraft travelling at very high speed passes through a pocket of humid air

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This perfectly-timed photo shows the split second moment a US Air Force jet created its own cloud – thanks to a rare combination of speed, temperature, humidity and pressure. 

Amateur photographer Wayne Lewis, 38, captured the split-second moment the F15 ‘Strike Eagle’ jet from RAF Lakenheath, Suffolk created and then emerged from the white fluffy cloud.

It is a rare phenomenon which only occurs in a fraction of a second when there is the perfect combination of air speed, temperature, humidity and pressure.

Amateur photographer Wayne Lewis, 38, captured the split-second moment the F15 ‘Strike Eagle’ jet (pictured) from RAF Lakenheath, Suffolk created and then emerged from the white fluffy cloud. The bizarre phenomenon occurs when an aircraft travelling at very high speed passes through a pocket of humid air

A change in pressure around the plane - caused by its high speed - can make water condense around the vehicle, creating an odd conical shape. This increase in air pressure makes water in the surrounding atmosphere instantly condense, creating the spectacular effect (pictured)

A change in pressure around the plane – caused by its high speed – can make water condense around the vehicle, creating an odd conical shape. This increase in air pressure makes water in the surrounding atmosphere instantly condense, creating the spectacular effect (pictured)

Mr Lewis, a teacher from Welshpool, shot the pictures in a military low-fly area in the mountains of North Wales near to Dolgellau - which was known as Cad West earlier this year. American and RAF jets often use the Wales low-fly areas and routinely fly at speeds of up to 575mph and 500ft from the ground as they perform high-G manoeuvres

Mr Lewis, a teacher from Welshpool, shot the pictures in a military low-fly area in the mountains of North Wales near to Dolgellau – which was known as Cad West earlier this year. American and RAF jets often use the Wales low-fly areas and routinely fly at speeds of up to 575mph and 500ft from the ground as they perform high-G manoeuvres

Often mistaken as the effect of a ‘sonic boom’, it happens when water vapour in the humid air is instantaneously condensed into droplets. 

What is a vapour cone and how is it created?  

A vapour cone, also known as a a ‘shock collar’, is created by a plane in specific atmospheric conditions while travelling at high speeds.

It occurs when an aircraft travelling at very high speed passes through a pocket of humid air.

The change in pressure can cause water to condense around the vehicle, creating an odd conical shape.

The increase in air pressure caused by the plane’s pressure envelope makes water in the surrounding atmosphere instantly condense, creating the spectacular effect.

Vapour cones are often incorrectly said to mark the moment a plane passes the sound barrier. However, they are not related to breaking the sound barrier or sonic booms.

This association comes from the fact that they are created by planes travelling at high speeds – often those that are capable of travelling faster than the speed of sound.

That moment of breaking the sound barrier is accompanied by a ‘sonic boom’, which will be heard by observers as the plane passes them.

Mr Lewis, a teacher from Welshpool, shot the pictures in a military low-fly area in the mountains of North Wales near to Dolgellau known as Cad West earlier this year. 

He said: ‘I shot the photos from the top of a hill above a valley, hoping that the aircraft would pass. ‘From there I managed to be almost at eye-level with the pilots.

‘I was incredibly lucky to get this photo. The photos have been extremely popular with the people I have shown.’ 

These type of clouds are often mistaken as the effect of a ‘sonic boom’ – when the aircraft breaks the sound barrier at 767mph. 

But are in fact  caused by a rapid change in pressure that results in condensation – and last between three and five seconds.

American and RAF jets often use the Wales low-fly areas and routinely fly at speeds of up to 575mph and 500ft from the ground as they perform high-G manoeuvres. 

Nearby there is a location known as The Machynlleth Loop – which is located in a set of valleys in Wales near Barmouth and is commonly used as practice grounds for low-flying jets. 

There is also an area known as Cad East in Snowdonia National Park where plane enthusiasts often gather to take pictures of F-15 Eagle fighters as they completed the Mach Loop.

Despite being designated a Royal Air Force base, RAF Lakenheath hosts units and personnel from the United States Air Force. 

RAF Lakenheath and nearby RAF Mildenhall serve as the two main U.S. Air Force bases in the UK, while the 48th Fighter Wing is the only U.S. Air Force F-15 fighter wing in Europe.

Mildenhall and neighbouring Lakenheath were re-opened after the second World War to host B-29 Superfortresses and have hosted US airmen ever since.

Lakenheath is currently home to the 48th ‘Liberty’ Fighter Wing and Mildenhall to the 100th Air Refueling Wing.

RAF Lakenheath and nearby RAF Mildenhall serve as the two main US Air Force bases in the UK, while the 48th Fighter Wing is the only US Air Force F-15 fighter wing in Europe. Pictured is an F15 'Strike Eagle' jet from the base - which can reach top speeds of 1,875mph (MACH 2.5 plus) and has a wingspan of 42 feet

RAF Lakenheath and nearby RAF Mildenhall serve as the two main US Air Force bases in the UK, while the 48th Fighter Wing is the only US Air Force F-15 fighter wing in Europe. Pictured is an F15 ‘Strike Eagle’ jet from the base – which can reach top speeds of 1,875mph (MACH 2.5 plus) and has a wingspan of 42 feet

The F-15 (pictured) has a laser designator which can lock in a target 10 miles away, while also having LANTIRN (Low Altitude Navigation and Targeting Infrared for Night) which is beneficial for attacking on the ground. It has space for a pilot and weapon systems manager. In the rear cockpit there are four screens displaying information from the radar, infrared sensors and weapons status, along with others

The F-15 (pictured) has a laser designator which can lock in a target 10 miles away, while also having LANTIRN (Low Altitude Navigation and Targeting Infrared for Night) which is beneficial for attacking on the ground. It has space for a pilot and weapon systems manager. In the rear cockpit there are four screens displaying information from the radar, infrared sensors and weapons status, along with others

THE UNDEFEATED FIGHTER: F-15 EAGLE JETS 

The F-15 Eagle is an American twin-engine, all-weather tactical fighter aircraft designed by McDonnell Douglas, now Boeing, in 1972. 

It entered service in 1976 and is among the most successful fighter jets in production today, with no losses in aerial combat. 

The F-15 has a laser designator which can lock in a target 10 miles away, while also having LANTIRN (Low Altitude Navigation and Targeting Infrared for Night) which is beneficial for attacking on the ground.

It has space for a pilot and weapon systems manager. In the rear cockpit there are four screens displaying information from the radar, infrared sensors and weapons status, along with others. 

The aircraft is predominantly used by the US Air Force as well as the air forces of Saudi Arabia, Israel and Japan.

Each model costs around £21million ($28million) and the aircraft has been modified and improved over the years with different variants now used around the world, including the faster F-15E Strike Eagle. 

A pair of United States Air Force F-15 Strike Eagle fighter jets are pictured over the English Channel

A pair of United States Air Force F-15 Strike Eagle fighter jets are pictured over the English Channel

As of 2018, the aircraft is being produced in different variants with production set to end in 2022.

At a glance:

Crew: One pilot

Length: 63ft 9ins (19.43m)

Wingspan: 42ft 10ins (13.05m)

Height: 18ft 6ins (5.63m)  

Max takeoff weight: 68,000lbs (30,845kg) 

Engines: 2 Pratt & Whitney F100-PW-100 or −220 afterburning turbofans 

Max speed: Mach 2.5+ (1,650mph) 

Max altitude: 65,000ft (20,000m) 

Armament: One 20mm (0.787in) M61A1 Vulcan 6-barrel Rotary cannon, four AIM-7 Sparrow missiles, four AIM-9 Sidewinder missiles, eight AIM-120 AMRAAM missiles 

Read more at DailyMail.co.uk