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Seriously considering returning the Spark (Not anymore!)
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<blockquote data-quote="Blue Baron" data-source="post: 7492" data-attributes="member: 1204"><p>There are reports where DJI replaced lost Sparks, after tedious documentation of the circumstances (flight log etc.). I remember of one case with the sudden fly away issue.</p><p></p><p>I computed the impact energy of a Spark falling out of sky. My estimate for end final velocity is 18 m/s, impact energy 50J. This should be reached from moderate altitudes well below 50m already. 100J can seriously injure a person as it will likely hit its head (although not its face). However, it won't likely be lethal and is in a range of what police uses to manage an aggressive crowd (50 - 200J rubber bullets, although rubber bullets can kill) ...</p><p></p><p>That's one of the advantages of the Spark. Unlike its heavier siblings, falling out of the sky it won't kill ...</p></blockquote><p></p>
[QUOTE="Blue Baron, post: 7492, member: 1204"] There are reports where DJI replaced lost Sparks, after tedious documentation of the circumstances (flight log etc.). I remember of one case with the sudden fly away issue. I computed the impact energy of a Spark falling out of sky. My estimate for end final velocity is 18 m/s, impact energy 50J. This should be reached from moderate altitudes well below 50m already. 100J can seriously injure a person as it will likely hit its head (although not its face). However, it won't likely be lethal and is in a range of what police uses to manage an aggressive crowd (50 - 200J rubber bullets, although rubber bullets can kill) ... That's one of the advantages of the Spark. Unlike its heavier siblings, falling out of the sky it won't kill ... [/QUOTE]
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Seriously considering returning the Spark (Not anymore!)