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From: "Frances Tang" <info@taiwan-aboriginal-art.com>
To: "阿超" <laser3mc@shaw.ca>
Sent: Thursday, May 16, 2002 5:12 AM
Subject: F3J人力拖曳
> 目前在台灣的同好皆用絞盤機起飛，尚未嘗試過人力拖曳起飛，是否可談談F3J人力
拖曳的技巧。跑道需多長？謝謝！
5.6.8.7. Towlines
a) Tow-lines for each competitor must be laid out only during the
competitor's five minute preparation time and must be retrieved by the end
of his/her working time.
b) The length of the towline shall not exceed 150 metres when tested
under a tension of 2 kg (4,4 lbs).
c) The tow-line must be made of polyamide monofilament material throughout
its length. It must have a pennant with an area of 5 dm2. A parachute (of
five (5) dm2 minimum area) may be substituted for the pennant provided it is
not attached to the model and remains inactive until the release of the
tow-line. Linkages (couplings, knots, loops, etc.) of different material
are permitted up to a total length of 1,5 m. They shall be included in the
total length of 150 m.
上面是拖曳線的規則, 拖曳線用兩公斤的拉力測試時不能超過150公尺(包括降落傘).
加上至少50公尺的拖曳者助跑者的距離, 再加上降落的場地約100-15公尺, 場地所需總
長度約要350-400公尺左右, 降落的場地可以隨場地的大小做調整. 拖曳線必須是用單
纖維線作成(像是牛筋或釣魚線之類的). 關於技巧方面, 有給點須要注意:
1. 拖曳線的尾端要確實的固定在地上, 否則對拖曳者來說非常危險, 從圖應該看的出
來.
2. 拖曳線在用之前可以先浸在水裡以增加韌性, 比較不容易斷.
3. 人力拖曳的力量不會比用絞盤機起飛小, 除非你的滑翔機是專為F3J設計或者你認為
你的滑翔機可以耐得住否則不要輕易嘗試.
4. 拖曳開始時, 線會開始拉緊, 等到線非常緊時再將滑翔機丟出, 千萬不要在拖曳者
開始跑, 線還沒有拉緊時就將滑翔機丟出, 因為拖曳線會脫勾, 滑翔機很可能會失速墜
毀.
如果妳還須要更多的資訊, 請讓我知道.
Jason
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發表於 2002年5月19日 04:45 PM
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