Streamer Duration rules

« Duration Events

31.1 Scope

Streamer Duration Competition comprises eleven events open to single-staged entries that contain a single streamer as the only recovery device. The purpose of this event is to achieve the longest flight duration time.

31.2 Streamer Specifications

A streamer is defined for this event as a piece of cloth, plastic film, or paper, whose shape is approximately rectangular. The streamer must have a length- to-width ratio of five to one (5:1) or greater and have a minimum area of 100 square centimeters. The streamer and model must be connected by only a single line or cord, attached at the narrow end of the streamer. The cord may not be connected to either the streamer or the model at more than one point (e.g., no yokes are permitted). The streamer may not be cut, slit, or otherwise altered in such a manner as to affect its nature as a simple connected plane.

31.2.1 FAI Streamers

For FAI class streamer duration, the streamer must have a length-to-width ratio of ten to one (10:1) or greater. The cord attaching the streamer to the model may be attached to a loop of thread which is attached to each edge of the narrow end of the streamer.

31.3 Assembly

Several pieces of material may be assembled into a single streamer to overcome length restrictions imposed by the length of commercially available material. All pieces of the streamer shall consist of identical material (e.g., the same type of crepe, plastic, or so on). Lengths of streamer material assembled in this manner must be joined in a manner so as to keep the aerodynamic effects of the joint as small as possible. All such joints shall be parallel to the narrow axis of the streamer.

31.4 Classes

This competition is divided into classes based on the permissible total impulse of the motor(s). The following classes of Streamer Duration Competition are established:

Motor Class Weighting Factor Multi-Round Maximum
1/8A 8 20 sec
1/4A 8 30 sec
1/2A 8 60 sec
A 8 120 sec
FAI A 8 180 sec
B 9 180 sec
C 10 240 sec
D 11 300 sec
E 12 300 sec
F 13 300 sec
G 14 300 sec