Mechanical Engineering
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# Calculations for Pneumatic cylinder launcher

## Question

Hello,

I want to build a pneumatic launcher for UAV and drones. i need to know the size of pneumatic cylinder i would need for launching at different speeds.

Weight range: 45 to 55 kg

desired Speed: 70 to 120 km/s

desired launcher length: 7 to 20 m

i need calculations for air pressure, air consumption, Force, speed, cylinder type and size at above values of weight and launcher length.

Kindly, help me with the calculations.

Email: shaheer.hassan366@gmail.com

## Recommended Posts

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Do you have any idea what sort of launcher you want to build? I can imagine several different mechanisms for doing this, which makes your question too broad to be answered. If you have no idea, perhaps that is where you should start.

DrD

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the aim is to build a single pneumatic cylinder launcher using pressurized air.

attached are some examples images which resemble the end design of launcher.

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With the devices you have pictured, the pneumatic cylinder must accelerate at the same rate as the plane. What about using leverage? I'm thinking of something like a sling-shot, where the plane would be attached to an arm rotating about a fixed pivot point? Then the pneumatic cylinder can move much more slowly (but with higher loads), and you should be able to release the plane at the proper point to go in the intended direction.

DrD

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I want to launch a 60 kg, mass , at 15 m/s using pneumatic cylinder launcher.

i need to calculate the size of bore and air consumption for cylinder required when;

pressure: 10 bar

velocity: 15 m/s

stroke size: 10 foot, (around 120 inch)

i am struggling with the calculations.

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