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The solar-powered Helios (pictured) was constructed mostly of composite materials such as carbon fibre, graphite epoxy, Kevlar®, styrofoam, and a thin, transparent plastic skin.

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The video shows an LLRV taking off and hovering in the air at a Nasa test site, with its pilot perched perilously in the cockpit.

The LLRVs, humorously referred to as 'flying bedsteads,' were used to analyse piloting techniques needed to fly and land the tiny Apollo Lunar Module in the moon's airless environment.

One video shows Nasa's first test flight of inflatable wing technology (pictured).

Following this its wings were inflated using a burst of nitrogen oxide from a container on board This test video of a Lunar Landing Research Vehicle (LLRV) was taken in 1969 in preparation for the Apollo 11 moon landing later that year.

The fire and smoke from the resulting crash took over an hour to extinguish.