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SPS2008

"Short Pack Standard Hang Glider"

A light hang glider that folds at 1.7 m to carry  inside the car, train, plane, or the cable car ...
(Click on the thumbnails and download the hight resolution PDF file)

01 1. Index and general data
02 2. Airfoil geometrical analysis
03 3. Frame
4.1 4. Frame details. Nose and aft keel
04.2
4.2 Frame details. Crossbar - leading
edge. Telescopical tubes union.
4.3 4.3 Frame details. Heart. A-frame.
      Antenna
4.4 4.4 Wires
5 5. Parts details
6 6. Parts list
7 7. Sail geometry
8.1 8.1 Sail details (1)
8.2 8.2 Sail details (2)
9 9. Sail colors design
10 10. Transportation bags
11 11. 3D model
12 12. Luff lines
13 13. Notes and advices



IMPORTANT NOTES:

ATTENTION. This model has not yet been built or put into flight. These drawings  are intended only as a compilation of the manufacturing technology of the  "Standard" hang gliders wings, which still remains very simple, requiring a broad knowledge. I think that these drawings will be of great interest to researchers and curious of the history of free flight.

To make this HG fligth require four basic previous operations:

1) Static equilibrium centering:

Move experimentally back and forth the position of the crossbar to find the center of gravity. This operation can also be done by theoretical calculation. Maybe make it later.

2) Aerodynamic centering:

Locate the hang point on the keel for a suitable speed flight and maximum performance. Must
realized experimentally. In addition, the A-frame should be rotated forward or backwards to ensure that the control bar is a comfortable distance for a supine pilot. In this project has turned 4º the A-frame forward.

3) Structural calculation of the entire set and determination of the safety coefficient. Maybe make it later. 

4) Experimental load tests.

Luff lines: The luff lines prevent deflations on the sail. If any deflation occurs, the trailing edge remains high, creating a reflex profile. They also facilitate the departure of the dives. Do not fly without luff lines installed.


APOLOGIES: It's possible that there are small errors not detected in this first version, or incorrect linguistic details that hinder understanding (English is not my usual language, but I try to do my projects in this language to broaden the spectrum of readers). If you find errors (technical or language) can send corrections to my e-mail and will be modified in the next version.

It must be really comfortable the HG transported in the trunk of the car or in the back seat ... Or boarding the train or the plane carrying a simulated sky package... And you will see the face that bring our paragliders colleagues when you begin to mount tubes with the telescopic "click" system...


In preparation:

Theory of the Standard HG:
-- Geometry
-- Aerodynamics
-- Structure

IMPORTANT: If your objective is only to build a hang glider and then flying..., forget this page, go to a  certified free flight school, learn with experienced instructors, and purchase certified new or used equipment, much more performante, cheap and safe.
CAUTION: The theory and practice of Hang Gliding only be learned at a flight school with qualified instructors.
Do not try to fly without such prior knowledge.


NEWS 2008-07-11


Although not directly based on SPS2008, but taking some infos, a group of university students from Estonia, have built a standard HG with aluminum frame and LDPE polyethylene sail.

The wing is 95 degrees nose angle, hang point ahead, and the trailing edge shape different from the SPS. A new polyester sail is under construction.

run1
1. First runs
frame
2. Triangle detail
LDPE
3. LDPE poliethylene sail

Please, do not forget the helmet on Youtube!
http://es.youtube.com/watch?v=U3tCiUO4vWM

Glider test #3:
http://es.youtube.com/watch?v=hViClmXNZQ0&feature=channel_page

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