| Harald Prinzler Detmolder Straße 42 D-33189 Schlangen |
Phone: +49-5252-7830 Fax: +49-5252-7830 email: hprinzler@aol.com URL: http://members.aol.com/hprinzler |
Description: Flowform with a molar shape
Created by: Harald Prinzler
Creation date: november 07, 1998
Last change: june 09, 1999
All values are related to the base line of the profile (lower leading edge
to trailing edge = 100). With the given datas you should calculate all
pieces of the kite depending on your chosen base line.
The length of the base line should be 2 metres or more. For shorter base
lines the maximum height of the profile could be too small.
The width of the chamber should be between 10 and 15. In my pencil sketch I
used 10. So, the area of the bottom surface has a height of 100 and a width
of 80.
The trailing edges of the chambers C4 are open. Cut the surfaces between
profiles P4 and P5 between the ends of the profiles. All other trailing
edges are closed.
The distances for air flow holes on the surfaces are related to the leading
edges. On top side use the upper leading edge, on bottom side use the lower
leading edge.
The length of the bridle lines are calculated for a chamber width of 10.
For other chamber width, take 2.5 times the width of the kite for B1 and
use Pythagoras to calculate the length of the other bridle lines.
Definitions
-----------
P_ Profile number
P1 Outer profiles, no vents
P5 Center profile, use the profile P4 and cut the trailing edge at
x-position 50 (Height at trailing edge is not zero).
C_ Chamber number
K_ Keel number
B_ Bridle line number
Xp X-position from leading edge to trailing edge. 0 is the lower
leading edge.
Yp Y-position from profile base line to maximum profile height.
L.E. Leading edge
T.E. Trailing edge
!FF
Overview
--------
Bottom view:
(Leading edge)
P1 P2 P3 P4 P5 P4 P3 P2 P1
+----+----+----+----+----+----+----+----+
| | | | | | | | |
| C1 | C2 | C3 | C4 | C4 | C3 | C2 | C1 |
| | | | | | | | |
| | | | | | | | |
| | | | | | | | |
| | | | | | | | |
| | | | | | | | |
| | | | --- | | | |
| | | | / \ | | | |
| | | / \ | | |
| | | / \ | | |
| | / \| | |
| | / \ | |
| | / \ | |
| / \ |
| / \ |
|/ \|
(Trailing edge)
Front view:
(Upper leading edge)
P1 P2 P3 P4 P5 P4 P3 P2 P1
+----+----+----+----+----+----+----+----+
| | | | | | | | |
| C1 | C2 | C3 | C4 | C4 | C3 | C2 | C1 |
| | | | | | | | |
+----+----+----+----+----+----+----+----+
| | | | |
| | | | |
K1 K2 K2 K2 K1
B3 B2 B1 B2 B3
Side view: (Keel only)
T.E. (Profile base line) L.E.
-------------------------+
K1 --__ \K2 |
--__ \ |
--__ \ |
--__ \ |
--__\ |
--\|
!FF
Data tables
-----------
Profile P1: Profile P2:
Xp Yp Xp Yp
------------------------ ------------------------
0 0 0 0
-7.735 14.044 -7.735 14.044
0.000 17.213 0.000 17.213
6.250 17.824 6.250 17.824
12.500 18.005 12.500 18.005
18.750 17.846 17.679 17.846
25.000 17.409 22.857 17.409
37.500 15.882 33.214 15.882
50.000 13.690 43.571 13.690
62.500 10.992 53.929 10.992
75.000 7.869 64.286 7.869
87.500 4.343 74.643 4.343
93.750 2.420 79.821 2.420
100.000 0 85.000 0
0 0 0 0
Profile P3: Profile P4/P5:
Xp Yp Xp Yp
------------------------ ------------------------
0 0 0 0
-7.735 14.044 -7.735 14.044
0.000 17.213 0.000 17.213
6.250 17.824 6.250 17.824
12.500 18.005 12.500 18.005
16.607 17.846 15.536 17.846
20.714 17.409 18.571 17.409
28.929 15.882 24.643 15.882
37.143 13.690 30.714 13.690
45.357 10.992 36.786 10.992
53.571 7.869 42.857 7.869
61.786 4.343 48.929 4.343
65.893 2.420 51.964 2.420
70.000 0 55.000 0
0 0 0 0
For profile P5 cut the trailing edge at Xp=50
Keel K1 Keel K2
Xp Yp Xp Yp
------------------------ ------------------------
0 0 0 0
0 -36 0 -36
100 0 50 0
0 0 0 0
!FF
Air flow holes:
Chamber Dist. Diameter Dist. Diameter
(Bottom surface) (Top surface)
------------------------------------------------
C1 10 5 78 5
C2 20 4 58 4
C3 30 3 39 3
C4 40 2 19 2
Vents:
Profile Xp,Yp Diam. Xp,Yp Diam. Xp,Yp Diam. Xp,Yp Diam.
(Vent 1) (Vent 2) (Vent 3) (Vent 4)
-----------------------------------------------------------------------
P1 (no vents)
P2 20,7 10 35,7 10 50,6 8 65,3.5 3
P3 20,7 10 35,7 10 50,4 4 -
P4 20,7 10 35,5 6 - -
P5 20,7 10 35,5 6 - -
(Positions are related to the lower leading edge)
Bridle lines: (Width=80, B1=2.5*Width)
Line Length
----------------
B1 200
B2 201
B3 204