What is F4C and F4H
| What is F4C and F4H scale competition |
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Norwegian version here.
A scale model aircraft competition is carried out after rules specified by the FAI (Fédération Aéronautique Internationale). Norway is represented at the time by the committee chairman Narve Jensen.During this event there will be competition in two classes:
F4C - Radio Control Scale Models Model built by the pilot.
F4H - Stand-off Scale Radio Control Models Model built by the pilot, built by others or bought ready made.
The competition consists of two parts; static and flying. Both parts are judged by judges who give marks from 0 to 10 points. The pilot with most points in the class is the winner. Flying and static judgment is going on in parallel between the two classes.
In F4C there is also a nation’s competition, with three pilots on each team, points from the individual competition counts. In both F4C and F4H there is also a Nordic championship.
STATICScale judgment is a little different between the two classes. The competitor provides documentation to the judges to prove that the model is as close to the original as possible. The complexity of the documentation is grater in F4C than in F4H.
F4C - SCALE MODELS
The following are judged
1. Scale Accuracy K Factor
a. Side view 13
b. End view 13
c. Plan view 13
2. Color
a. Accuracy 3
b. Complexity 2
3. Markings
a. Accuracy 8
b. Complexity 3
4. Surface texture and scale realism
a. Surface Texture 7
b. Scale Realism 7
5. Craftsmanship
a. Quality 12
b. Complexity 5
6. Scale detail
a. Accuracy 9
b. Complexity 5
Total K Factor K = 100
The marks from the judgment from three judges is multiplied with a K-factor and summed. Max score is therefore 3000 points.
F4H - STAND-OFF SCALE
1. Scale Accuracy K-factor
a. Side view 10
b. End view 10
c. Plan view 10
2. Color accuracy 10
3. Markings accuracy 10
4. Craftsmanship quality 10
5. Scale Details 10
Total K Factor K = 70
The marks from the judgment from three judges is multiplied with a K-factor and summed. Max score is therefore 2100 points.
FLYINGIn a championship 3 rounds are normally flown and judged by five judges. The flying part is equal in both F4C and F4H. As in ski jumping the highest and lowest marks is removed. Scoring is given in marks from 0 to 10 and with a total K-factor 100, maximum score is therefore 3000 points. The average of the two best rounds counts in the final score. Maximum points is therefore (Static + Flying) 6000 points in F4C and 5100 points in F4H.
The following is judged:
1. Take-off K = 11
2. Option 1 K = 7
3. Option 2 K = 7
4. Option 3 K = 7
5. Option 4 K = 7
6. Option 5 K = 7
7. Option 6 K = 7
8. Option 7 K = 7
9. Option 8 K = 7
10. Approach and Landing K = 11
11. Realism in flight
a) Engine sound (realistic tone & tuning) K = 4
b) Speed of the model aircraft K = 7
c) Smoothness of flight K = 7
d) Choice of options K = 4
Total K Factor K = 100
Options are exercises chosen by the pilot in witch the airplane is capable of. The figure eight and descending 360 degrees are mandatory exercises.
The pilot normally uses a caller who reads out the exercises that are performed, also when the exercise is started and ends. If the aircraft crosses a given safety line the score is normally zero. (This can be difficult to see from the audience position).
First and second round is flown in a drawn order, the last round by reversed ranking. Best pilot last. Weather and wind can implicate delay in flying. No aggregated ranking is published before everyone is done with static judgment and has finished the first round.
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