ISIS has shared designs of how to make anti-aircraft missiles - encouraging fanatics to shoot down packed passenger planes.

The detailed plans, shared in an online video, include step by step instructions of how to create the missiles, even on how to enable the weapon to hone in on its target autonomously.

2 Designs for missiles designed to take down aircraft have been shared online by ISIS Credit: kuoty hyuiop / YouTube

The 35-minute video also shows how the missile can be fired from a fighter's shoulder, with the weapon then able to be controlled by mobile phone or a PC.

The designs show that the missiles can include a smart phone, which can then use its camera to identify aircraft targets and even control steering flaps.

It also suggests on how to install sensors to allow the missile to adjust its course.

It is now feared that ISIS will start to use the new weapons and deadly chemicals in their battle to try to keep hold of Mosul.

There have already been terrifying reports that the group is working on drones to spread explosive devices.

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The video has disturbingly been viewed more than 11,000 times with commenters sharing advice of where to get certain materials and sharing comments that God give the people involved victory.

One comment suggested that the missile should be used for revenge against the current assault on Mosul, which was held by ISIS before Iraqi forces poured in to challenge their hold on the city.

Others suggested potential improvements to improve the design.

The emergence of the plan is believed to be linked to difficulties encountered by ISIS in obtaining commercial shoulder-launched anti-aircraft missiles.

Western intelligence agencies are thought to have worked hard to ensure that obtaining them on the black market is extremely difficult.

2 The plans suggest using smart phones to be able to control the missile Credit: kuoty hyuiop / YouTube

The link to the video was posted to an ISIS-run password-protected website that includes a section devoted to military training and bomb-making.

The tactics come as ISIS was revealed to be using suicide dogs to inflict as much bloodshed as possible.

Meanwhile ISIS leaders have fled besieged Mosul through a network of tunnels while ordering its foot soldiers, including its youth wing "the Cubs of the Caliphate", to stand and fight.

It has also emerged that ISIS warlords are immersing themselves in the teachings of Hitler as they cling on to fantasies of building a worldwide empire based on their murderous beliefs.

Arabic translations of Adolf Hitler’s Mein Kampf – My Struggle – are being pored over by leaders of the terror group as they plot world domination.

Youtube has been approached for comment.

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