Home Contents

The Tiny
Products The Next The Max The Max II The Middle The Tiny Presentations For sale Tips Notes

 

 

 

The "TINY" is another our actual project. It uses paper sheeted foam wing with newly designed airfoil shown on notes page.

550g heavy model with .15 engine easily flies full F2B pattern on 17m lines. I was surprised with its flying ability. I can say it is much easier to fly full pattern than with full size F2B model (unfortunately only in calm condition). I recommend it to all those who want to learn F2B pattern.

On bottom of page is table with detailed data giving all dimensions as well as some numbers helping to trim the model before flying. All is in SI units.

Here is example of 2 models differing in look only. Both use paper/foam wing and 4mm thin balsa flaps, stab and elevator. First one uses old cross scavened Os Max .15 with 9x4 prop and clunk tank - good choice for beginners.

wpeE.jpg (15976 bytes)

Second, nice looking is the same layout, just better finished.

wpeD.jpg (25943 bytes)

 

Here are some details:

wing wing
span mm

1000

area m^2

0,23

chord root mm

220

aspect ratio

4,27

chord tip in mm

160

taper

0,67

chord tip out mm

160

C/4 sweepback deg

4,25

root flap mm

60

thickness of airfoil %

0,19

tip flap in mm

27

area flaps %

0,19

tip flap out mm

30

max. angle flaps deg

27,00

tip flap to tip mm

0

wing loading kg/m^2

2,99

thickness of airfoil root mm

50

CG %

15,58

thickness of airfoil tip mm

40

max. tension flaps pushrod N

33,69

wing AC offset (level) mm

9,29

tail wing AC offset (corner) mm

10,86

span mm

460

chord root mm

80

tail
chord tip mm

60

area m^2

0,06

root flap mm

60

area tail % wing

0,25

tip flap mm

50

aspect ratio

3,68

C/4 sweepback deg

3,11

linkage taper

0,79

bellcrank max Deg

27

elevator % tail

0,44

bellcrank size mm

100

max angle tail deg

29,96

bellcrank arm mm

20

max. tension tail pushrod N

5,37

horn arm flap mm

20

horn arm flap/elevator mm

22

needed line tension N

13,48

horn arm elevator mm

20

centrifugal force N

20,45

line tension over head N

13,59

lines drag lines N

1,27

diameter mm

0,3

lines sweepback (level) deg

3,54

lenth m

17

lines sweepback (over head) deg

5,32

lap time s

5

lines to flaps (level) mm

124,04

lines to flaps (over head) mm

108,41

prop
diameter "

9

pitch "

4

Speed m/s

23,25

rpm 1/min

11000

weight g

18

tip weight (sum) g

19,70

fuselage engine out (effective) deg

3,93

prop-wing mm

170

arm of engine out mm

17,09

flap-tail mm

300

arm of engine down mm

23,49

CG to LE (root) mm

65

weight g

600

overall engine momentum (level) (down) Nm

-0,01

weight of wing ~ g

200

overall engine momentum (corner) (down) Nm

0,05

engine out Deg

2,5

engine up mm

10

needed cy wing (corner)

1,50

engine down Deg

1,5

needed cy tail (corner)

0,43

fuselage offset right mm

5

landing gears height mm

120

speed lost in corner m/s

0,86

corner recovery (level) deg
corner recovery (level) m
corner radius m

3

corner recovery (overhead) deg

0,00

corner recovery (overhead) m

0,00

lines retire (level) m
lines retire (overhead) m

0,00

angle of attack wing before corner deg

15,97

angle of attack wing in corner deg

6,67

reserve of wing cy in corner

0,18

CG front neutral point mm

115,70

momentum CG to neutral point mNm

33,76

momentum to mass

5,63

static reserve of stability %

24,43

elevator roll (in) deg

3,45

 

 

wpeF.jpg (9524 bytes)wpe10.jpg (10341 bytes)wpe12.jpg (10334 bytes)

wpe11.jpg (17033 bytes)wpe13.jpg (16535 bytes)wpe14.jpg (14139 bytes)

wpe15.jpg (28579 bytes)wpe16.jpg (21280 bytes)

wpe18.jpg (23894 bytes)wpe17.jpg (23222 bytes)

 

 

 

Home ]

Send mail to igor-hexoft@netax.sk with questions or comments about this web site.
Copyright 1998 Hexoft
Last modified: marca 03, 2000