Flymaster GPS - Nearby Landings

According to FAI code, section 3, and also the XC-Contest rules, an FAI triangle must satisfy the 28%
leg rule, which states that the shortest leg must not be less than 28% of the total leg distance. The
Flymaster FAI triangle assistant module provides numerical and graphical, information about the triangle
status, distances, and required navigation to fulll the 28% rule. Since automatic detection of the triangle
vertices is very dicult, we decide to let the pilot manually decide on the rst and second vertex rather
than have this automated since this may lead to invalid triangles. The Triangle Assistant page allows the
pilot to manage the execution of a FAI Triangle by manually set the triangle vertices. The page can be
accessed through the main Menu (see Figure 4.8), and the page options can be seen in Figure 4.9. A short
description of each option can be seen in Table 4.3
Figure 4.9: Triangle Assistent Menu
Note: The Triangle Assistant page is only accessible when the instrument has a valid 3D
position x
Table 4.3: Triangle Assistent Menu Options
Option Function
Set Vertex 1
Denes the current coordinate as the rst FAI trian-
gle vertex.
Set Vertex 2
The current coordinate is set has vertex 2. If vertex
1 is not dened yet then the take-o coordinates are
used as vertex 1. In both cases vertex 2 can only
be dened if the minimum leg distance (2 Km) was
traveled.
Cancel FAI Trian-
gle
Cancel the current FAI triangle and resumes the task
if dened.
A more detailed description of the FAI triangle module assistant can be seen in section Chapter 7.
4.5 Nearby Landings
It is possible to dene waypoints as Landing , allowing the pilot to quickly check for landing options. The
Nearby Landings page will show all the waypoints, dened as Landings , for which the necessary glide ratio
is nite. Glide ratio's are calculated once the Flight Starts. Besides the waypoint name the distance and
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