Δευτέρα, 5 Σεπτεμβρίου 2011

REMOTE CONTROLLED KITE AERIAL PHOTOGRAPHY

Aerial photography is implemented via an r/c kite - suspended pan tilt rig ,and an rf video link. Kite aerial photography is completely  different  from  traditional r/c model photography. It has some serious advantages as :
  • Low cost
  • Low risk for environment, operator and subject
  • Completely portable. (whole set fits in a 40 lt backpack)
  • Easy maintenance.
  • Quiet and low profile.
  • One person operation , remote operation possible. 
Main drawbacks are :
  • Wind must have a speed  over 12 knots (>4 beaufort scale) - not a problem at  the Aegean islands.
  • Kite line must be clear of electric lines, trees and other obstacles.
The kite can be a fully foldable one (no spars) of the flowform type but virtually any type with a 2-3m2 area can be used..
The spool (reel) is the most critical part of the system , because it must take 150-400m of line, it must have a kind of brake ( and that is very important!) and a handle that can wind and release the line fast . Mine is hand  made of 10mm plywood.
The rig is suspended on a picavet style cross from the line below the kite (as a safety measure) ,it weights approx 500grams  and it consists of:
  • a 2mm  aluminum frame with 4mm ball bearings (from old floppy disk readers) 
  • 2 standard servos for pan and tilt (the pan servo must rotate 360deg )
  • A micro servo for the shutter button 
  • an rf video/audio link at 1.2GHZ  connected to tv out of the camera
  • a standard 3 channel r/c transmitter at 35 MHZ 
  • A high resolution digital camera (>9mpix) in wide angle mode, low weight
  • Batteries for all the above
kite, profile

kite and spool

kite and rig



Ancient stone heaps , Χουβέλες στο Αίπος

Ancient stone heaps , Χουβέλες στο Αίπος

Aquaduct over Koufos stream, Το υδραγωγείο στο ρέμα του  Κουφού

Chios landscape ,  Ανοιξιάτικο τοπίο


Δότια Χίου , Dotia Chios

Byzantine tower at Dotia ,Chios . Βυζαντινός πύργος στα Δότια

Anavatos - Chios  Ανάβατος Χίου
 Here is a low-resolution video from the aerial camera. 

video

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