Experimental Model 'X' - 1/5th scale |
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21sep99 |
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Key Dimensions (basis for estimates) |
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(metric) |
(imperial) |
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Prototype |
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Wingspan (30') |
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m |
9.1 |
in |
360.0 |
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Wing chord (est/ave) |
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m (ave) |
1.4 |
in (ave) |
54.0 |
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Wing area |
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sqm |
12.5 |
sqft |
135.0 |
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Fusalage length |
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m |
5.6 |
in |
221.0 |
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Model |
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Scale |
5.0 |
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Wingspan |
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m |
1.829 |
in |
72.0 |
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Wing chord |
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m (ave) |
0.274 |
in (ave) |
10.8 |
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Wing area |
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sqm |
0.502 |
sqin |
777.6 |
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Fusalage length |
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m |
1.123 |
in |
44.2 |
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Measure |
(g) |
(oz) |
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Motors |
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472.8 |
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16.7 |
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Astro 40G |
g |
208 |
430.7 |
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15.2 |
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Wire/plug |
m |
0.5 |
42.1 |
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1.5 |
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Props |
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42.0 |
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1.5 |
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13x8 MA |
g |
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22.0 |
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0.8 |
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Spinner |
g |
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20.0 |
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0.7 |
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Battery pack |
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1062.0 |
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37.5 |
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3000's |
cells |
0 |
0.0 |
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0.0 |
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2000's |
cells |
18 |
1062.0 |
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37.5 |
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Speed control |
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52.0 |
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1.8 |
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Jeti Jes60 |
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Est. |
52.0 |
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1.8 |
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Radio |
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394.2 |
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13.9 |
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Receiver |
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Est. |
31.4 |
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1.1 |
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Aileron servos |
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2 |
90.0 |
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3.2 |
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Elevator/Rudder |
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2 |
90.0 |
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3.2 |
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Retract servo |
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1 |
50.0 |
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1.8 |
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Aileron extension leads (1000mm) |
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2 |
18.8 |
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0.7 |
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Wing extension leads (400mm) |
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2 |
10.0 |
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0.4 |
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Rx battery 700mah |
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Actual |
93.7 |
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3.3 |
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Rx switch (3 lead) |
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Actual |
10.3 |
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0.4 |
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71.4 |
Motor/Radio |
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Fuz |
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783.5 |
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27.6 |
55.2 |
Airframe |
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Longerons (6 x 6mm hardwood x4) |
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1.123 |
64.7 |
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2.3 |
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Diagonals, etc (3 x 6mm balsa) |
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1.123 |
19.4 |
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0.7 |
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Bulkheads/formers |
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Est. |
20.0 |
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0.7 |
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Stringers (3 x 3mm balsa x10) |
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1.123 |
13.5 |
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0.5 |
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Gussets (1/64 ply) |
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Est. |
10.0 |
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0.4 |
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Front sheeting (1/16" balsa) |
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0.100 |
40.0 |
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1.4 |
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Turtle deck sheeting (1/16" balsa) |
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0.400 |
160.0 |
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5.6 |
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Canopy |
Scale |
5 |
60.0 |
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2.1 |
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Wing attachment (3mm ply?) |
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Est. |
40.0 |
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1.4 |
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Wing fillets |
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Est. |
40.0 |
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1.4 |
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Servo tray |
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Est. |
20.0 |
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0.7 |
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Battery tray |
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Est. |
30.0 |
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1.1 |
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Firewall/motor mount |
Scale |
5 |
55.2 |
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1.9 |
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Cowl |
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Scale |
5 |
139.8 |
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4.9 |
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Tail wheel/assembly |
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Est. |
20.0 |
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0.7 |
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Silk/Dope/Paint |
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1.123 |
30.9 |
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1.1 |
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Elevator pushrod |
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Est. |
10.0 |
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0.4 |
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Rudder control wires |
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Est. |
10.0 |
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0.4 |
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Tail (est) |
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175.8 |
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6.2 |
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Stab |
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Scale |
5 |
55.8 |
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2.0 |
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Elevator |
Scale |
5 |
34.8 |
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1.2 |
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Fin |
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Scale |
5 |
22.2 |
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0.8 |
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Rudder |
Scale |
5 |
27.0 |
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1.0 |
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Silk/Dope/Paint |
Scale |
5 |
36.0 |
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1.3 |
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Wing |
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606.0 |
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21.4 |
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Spars (6 x 6mm spruce x 2) |
Span |
1.829 |
38.9 |
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1.4 |
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Ribs (3mm depron x 28) |
# |
36 |
36.0 |
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1.3 |
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Webbing (1/16" x 20~55mm balsa) |
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1.829 |
16.1 |
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0.6 |
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L/Edge (6 x 6mm balsa) |
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1.829 |
6.6 |
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0.2 |
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T/Edge (6 x 6mm balsa) |
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1.829 |
6.6 |
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0.2 |
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Wing tips (6 x 12mm balsa x 2) |
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1.829 |
10.5 |
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0.4 |
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Top Sheeting (1/16" balsa l/edge 'D') |
Area |
0.502 |
30.1 |
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1.1 |
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Bottom Sheeting (1/16" balsa l/edge 'D') |
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0.502 |
30.1 |
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1.1 |
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Servo mounts |
Est |
2 |
40.0 |
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1.4 |
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Wing fuz mount |
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Est. |
20.0 |
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0.7 |
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Wing tip joiners (200mm carbon/brass x2) |
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Est. |
0.0 |
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0.0 |
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Ailerons |
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L/Edge (3 x 12mm balsa x 2) |
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1.829 |
3.8 |
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0.1 |
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Ribs |
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Est. |
10.0 |
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0.4 |
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Sheeting (1/16" balsa) |
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1.829 |
21.9 |
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0.8 |
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Retract units |
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Est. |
100.0 |
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3.5 |
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Mounts |
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Est. |
100.0 |
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3.5 |
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Wheels |
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Est. |
60.0 |
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2.1 |
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Collets |
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Est. |
10.0 |
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0.4 |
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Silk/Dope/Paint |
Area |
0.502 |
55.2 |
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1.9 |
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Pushrods |
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Est. |
10.0 |
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0.4 |
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TOTALS |
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3588.3 |
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126.6 |
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7.9 |
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lb |
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7.91 |
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Wing area (in) |
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778 |
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Wing loading (oz/sqft) |
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23.4 |
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Current (amps) |
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40.0 |
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Voltage (est.) |
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18.0 |
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Motor power (w) |
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720 |
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Power loading (w/lb) |
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91 |
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Motorcalc |
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Total weight |
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126.6 |
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Astro40 |
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13.0 |
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Batteries |
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36.9 |
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Speed control |
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2.0 |
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Airframe (balance) |
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74.7 |
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