Dates
The 2010 2M Challenge will consist of four rounds, on the following dates:
· Sunday 7 February (SGC)
· Sunday 28 March (ETB – TBC)
· Sunday 2 May (BERG – TBC)
· Sunday 15 August (SGC)
Basic Format/Structure
2m RE Glider
200 m Winch Launch
3 Pilots per team
8 Minutes working time
6 Minutes flight time
Unlimited number of launches within working time (last flight counts)
NOTE! If you intend using your scores for the National Postals as well, you will have to abide by those relaunch rules!
Categories
There will be three categories namely Junior, Rookie and Senior. Refer to the MGA definition of pilot class for explanation.
Models
The aircraft must be a RC glider as defined by the MGA — no on-board propulsion of any type will be allowed.
There will be only one model class namely “2 Meter, Rudder Elevator Only” (G2K).
The only two control functions allowed are rudder and elevator (V-tails will be allowed).
The maximum allowable span is 2 metres projected span. This implies that the glider wing should be able to fit lengthwise through a ring exactly 2 metres wide.
There is no restriction on the construction techniques used in manufacturing any parts of the aircraft.
There is no requirement for the pilot to be the builder of the model although this is encouraged.
The model may be controlled with any make or model of radio providing it is able to operate simultaneously with other radios as per the latest SAMAA specifications.
Transmission must be on one of the SAMAA approved frequencies.
There is no restriction on the number of models an entrant may use in the course of the contest, a different one for each flight if he/she so wishes.
Launching and Re-Launching
Launching will be done through the use of an electric winch with a maximum distance of 200m between the winch and the turnabout.
There is no restriction on the number of re-launches, but the last flight counts.
NOTE! If you intend using your scores for the National Postals as well, you will have to abide by those relaunch rules!
Flights
2 Minutes preparation time.
8 Minutes working time.
6 Minutes flight time starts when the glider leaves the winch line and stops at the end of working time, or when the glider touches a “grounded” object.
Flight time outside of working time does not count (i.e. flight time stops at the end of working time).
Landing score outside of working time does not count.
Landing after 7 minutes flight time also does not count.
“Landing” further than 15 metres from the spot does not count.
Scoring
One point is allocated per completed second of flight time from release of the parachute/flag until the model touches a “grounded” object. One point per second is deducted for each full second after six minutes before the model comes to rest. The maximum possible flight score for each task is thus 360 points.
Landing points are calculated by subtracting five points from a maximum of 100 for each full metre that the nose of the model comes to rest away from the spot. 100 if the nose is within one meter of the spot, 95 if within 2 meters and so on down to 30 if within 15 meters.
The landing score is added to the flight score to obtain the task score. (Example: A 5 minute 54 second flight with a landing 1.4 m from the spot will receive a score of (5 x 60 + 54 = 354 flight points plus 95 landing points = 449 points)
Flights that extend 60 seconds over their target time lose all landing points.
For a flight to be recognized the pilot must have a separate timekeeper — timing for yourself is not permitted.
The maximum score is 460 points per flight, from 360 flight points (6x60 seconds at one point per second) plus 100 landing points.
1000 points are awarded to the pilot with the highest combined flight score in each slot. The other pilots’ scores are calculated proportionally.
Conditions permitting, ideally, six rounds will be flown. The best 5 scores will be used in calculating the pilot’s total score.
The pilot with the highest score in each class will be declared the winner for the specific Challenge.
Each individual pilot’s best three scores will count towards his/her total for the year.
The club’s total for the year will consist of the top 4 individual pilots’ scores, including a minimum of either one Junior or Rookie.
