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The Rainbow IVb was designed for F3B competition. The MH 32 airfoil makes the plane easy to handle, and also fast in the speed task.
wing: Hollow molded, 3-piece glass wing with carbon spar and special reinforcements for F3B/F3J. The ballast tube in the wing is left out in the F3J version to further reduce the weight. The ailerons are top hinged, while the flaps are bottom hinged to achieve a good butterfly braking performance.
fuse: The molded, yellow prepainted glass/kevlar fuse has a servo bay and a nose cone for easy installation of the radio equipment. The wing can be mounted on the fuse right after delivery.
tail: 2-piece, hollow molded V-tail with carbon spar.
und Ruderklappen als Elastic-Flap angelenkt.
flight performance/usage:
The basic concept of the Rainbow IVb gives the plane a wide flight spectrum. The plane can be used either for slope sailing (F3F) or thermal duration (F3B/F3J) started with a winch.
radio:
aileron, flaps (butterfly), rudder, elevator (V-tail)
test report:
AUFWIND magazine 01/2000 and 03/2000
desig: Dieter Perlick
subject to modifications
| specs: | |
| span: | 304 cm (119,68 in) |
| Rumpflänge: | 145 cm (57.1 in) |
| weight F3J: | 2100-2200 g (74-77 oz) |
| weight F3B: | 2200-2300 g (77-81 oz) |
| ballast wing: | 1100 g (38.8 oz) |
| ballast fuse: | 500 g (17.6 oz) |
| airfoil: | MH 32 |
| area: | 61 dm
(945.5 in) |
| loading: | 34-63 g/dm
(11-21 oz/ft) |
| usage: | F3B/F3J |
| price: | 946,- Euro |