Sky Explorer Paper Helicopter
Fold opposite rotor blades, then let your little explorer spin toward the floor.
Drop & spin
You need: Printer paper and scissors.
Download packA4 + US Letter PDFs · 1 making sheet
Guide included; keep it on screen if you prefer.
Your printable pages
Print the making sheets single-sided at 100% / Actual size. Tap a page to look closer.
Make it, then try it
1. Cut the outline and three slots
Cut out the rectangle. Cut the centre line between A and B, stopping at the crossbar. Cut both short side slots. Stop at each dot. Do not cut any dashed fold line.
2. Fold a narrow body
Below the side slots, fold C and then D BEHIND the centre body along the long dashed lines. The bear stays visible on the front. Fold the bottom 15 mm up on the back. Keep the crossbar flat.
3. Make opposite rotor blades
Fold A forward and B backward at the dashed line above the crossbar. Seen from the side, the two blades point in opposite directions. Keep their creases level.
4. Drop, watch and adjust
Stand on the floor. Hold the narrow body at shoulder height, then let go over a clear space. If it tumbles, check the opposite blade folds and straighten the body. Try again.
Three ways to try your paper helicopter
This printable paper helicopter uses opposite blade folds and a narrow folded body. Start with a clear floor space and one gentle release before trying a comparison.
Make a first-drop record
Stand on the floor and hold the finished helicopter at shoulder height over a clear space. Release it without throwing. On scrap paper, mark whether it turns, tumbles or falls sideways. Straighten the body and repeat from the same height.
Reverse the blade folds
After the first trial, fold blade A and blade B in the opposite directions from before. Keep the body and release height the same. Watch from the same viewpoint and compare the direction of the turn. Describe what you see rather than expecting a particular result.
Choose a landing zone
Place a sheet of scrap paper on the floor as a landing zone. Release the helicopter above it and see where it lands. Try again after adjusting just one blade crease. Record the changes; keep the release gentle and stay on the floor.
Questions before you make it
What paper should I use for this paper helicopter template?
Start with ordinary printer paper, as specified in this design. Heavy card changes how the rotor bends and falls. Print at 100% / Actual size so the blade and body dimensions match the guide.
Does this paper helicopter need a paper clip?
No. This template uses folded side panels and a 15 mm bottom fold to build up the lower body. The supplied version requires only printer paper and scissors; its trials should start without added weights.
Why does my paper helicopter tumble instead of spin?
Check that A and B fold in opposite directions, the centre slot stops at the crossbar, and the side panels fold behind the body. Straighten the body, check for a blade caught against it, and release gently again. This prototype still needs physical flight testing.
Which lines do I cut and which do I fold?
Cut the outside rectangle, the centre slot between the blades, and the two short side slots. Stop each slot at its marked endpoint. Fold the dashed lines; do not cut through the crossbar.
How many pages do I need to print?
Print the first page for the helicopter. The second page is the illustrated guide and can stay on screen. Both the A4 and US Letter PDFs use the same template dimensions.
Digital assembly illustrations. Physical assembly and use have not yet been tested.