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The ALPHA 4 HIKE
In this supplement to the ADVANCE ALPHA 4 handbook you can
fi nd all the relevant information about the HIKE design, as well as the
differences from the normal ALPHA 4.
Intended use
As a lightweight version of the ALPHA 4 the HIKE offers the hiker,
trekker, traveller or quite simply the weight-conscious pilot a genuine
lower-end intermediate alternative option.
Differences from the ALPHA 4
Lightweight Skytex 27 g/m
2
fabric (top surface and bottom surface )
is used for the HIKE and, in conjunction with Skytex 40 g/m
edge and ribs), provides an effective compromise between weight
and durability. Compared with the equivalent ALPHA 4 the HIKE
takeoff weight has been raised by around 20 kg, meaning that a
smaller glider size can be fl own. In addition, specially coated un-
covered lines are used. Both of these features contribute to slightly
more dynamic in-fl ight behaviour, and markedly improved perfor-
mance – without affecting passive safety and simplicity of use.
Other differences:
• Narrow risers, with unaltered speed system
• New speed system attachment (see illustration page 15)
• No Quick-Snap big ears system
• Compact, light-as-possible backpack
• Light inner bag
Flight characteristics
This section is a supplement to the chapter "Flight characteristics" in
the ALPHA 4 handbook, which also applies to the HIKE.
Compared with the existing ALPHA 4 the HIKE fl ight characteristics
2
(leading
are mostly identical, particularly when fl own at the same wing loading.
At the expanded weight ranges of the HIKE (23 size weights above
75 kg, 25 above 88 kg and 28 above 106 kg) manoeuvring is slightly
more dynamic however, because the wing loading is clearly higher
than for a regular ALPHA 4. Specifi cally worth mentioning is the ten-
dency to dive in front while recovering from a full stall – noticeably
greater because of the higher wing loading. And, as well, the accele-
rated asymmetric collapse behaviour is more dynamic.
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