SRIJAN 2019 : Rules for Zonal Round of Aeromodelling Competition


A team must design, fabricate and demonstrate a fixed wing aircraft system that can perform tasks mentioned in following rounds with given constraints. A team has to design, fabricate and demonstrate any kind of flying device system that can perform maneuvers with given constraints. All type of flying device are allowed like (Quadcopter, hexacopter, tricopter, grocopter, fixed wing plane, delta wing palne, helicopter etc …).

Design Constraints:

1. Only electrical motors are allowed. The use of IC engines or any other means of providing thrust is prohibited.
2. Use of gyroscopes (gyros) and programming assistance in receivers is prohibited.
3. Only radio frequency controlled devices are allowed. Other kind of wireless controllers are not allowed.
4. The maximum size of model is not more than the 2 meters
5. APM (Auto pilot Mode is not allowed )
6. T/W <=0.75 without payload (If excess thrust is measured, it will be neutralized by adding weight below the aircraft at center of gravity)
7. Propeller diameter should not be greater than 15 inches
8. Total wingspan should be a maximum of 1.5 m
9. All turns in the course shall be directed away from the spectator side of the course. Any turns in the course towards the spectators will result in a zero score for that flight. This is an important safety rule.
10. Any object falling from the model during the take-off, flight or landing may disqualify the attempt.

Abstract Submission:

1. All the participants need to submit online an abstract on their aero model , which should be no longer than 4 pages of A4 size 1.5 line spacing with standard formatting. The Abstract must document the basic design of the aircraft (dimensions, wing areas, speed, etc.) and should also explain how their design is suitable for given problem.
2. Along with the abstract, participants also must send a zip file containing at-least 5 and no more than 10 photographs of the aircraft while it is being built.
3. The Abstract must be submitted 4 days in advance of the competition date

Competition : There will be two round at Zonal Level : Round 1 and Round 2.

Rules for Round 1 :

1. A maximum of 5 minutes will be given to each team to perform this round. The team can repeat the round within the specified time to score more points.
2. If the aeromodel does not take off in first attempt during qualifier round due to uncontrollable/ natural causes like sudden gusts of wind etc., they will be given second attempt then and there itself. This will be applicable only if the cause happens within the first 3 seconds of flight.
3. The timer will start the moment the participating team enters the take-off zone with the aeromodel or within 30 seconds of previous team completing their attempt, whichever is earlier. The participants need to be prepared in time and launch without delay after entering the take-off zone.

Steps for Round 1 :

A good measure of the design of an aircraft is in rate of climb and gliding time. The steps of this round are as follows :
1) Climb for 20 seconds with full throttle (without payload)
2) Glide for maximum time with dead stick ((throttle=0 or Gliding)
3) Land in given zone of 20X20m
(The aircraft however can be maneuvered while it is gliding.)

Flight Scoring The teams will be graded based on the glide time of the aircraft as mentioned below. Scoring for Round 1 : 10* (glide time in seconds)

Rules for Round 2 :

1.The objective is to fly the course in the shortest time. Atleast three attempts at flying the course will be permitted per model.
2. If the aeromodel does not take off in first attempt during qualifier round due to uncontrollable/ natural causes like sudden gusts of wind etc., they will be given second attempt then and there itself. This will be applicable only if the cause happens within the first 3 seconds of flight.
3. The timer will start the moment the participating team enters the take-off zone with the aeromodel or within 30 seconds of previous team completing their attempt, whichever is earlier. The participants need to be prepared in time and launch without delay after entering the take-off zone.

Steps for Round 2 :

• Participants have to show their flying skills by showing clean aerobatics (given tasks). This round will be a gate round i.e. the Host Institute will provide an arena with few gates through which the aero model have to cross and perform the following pattern.
a) Take off from given zone of 20X20m.
b) Fly straight (climb smoothly) (Refer Figure-1).
c) Cut the throttle drive straight (Refer Figure-1).
d) Pass through the gate (5mX5m) by bring it towards the take off/landing zone
e) Roll & stabilize the aircraft after passing through the gate. (Refer Figure -2)
f) Take half loop and roll the aircraft then make a figure of 8 (Refer Figure -3).
g) Pass through the gate (5mX5m) by bring it towards the landing zone/ take off
h) Land in the landing\take off zone

Flight Scoring

The team having the shortest flight time will be awarded 100 points and the remainder of the team’s flight scores will be calculated on a pro rata basis. The highest two scores of the three attempts will form the basis for the official flight score for each team.

Final Score = Score from Round 1 + Score from Round 2.

Figure 1
Figure 2
Figure 3

Revisions

Any revisions to the Scope of the Competition would be intimated to all the participants via registered email and on the websites of the respective festivals at-least 45 days before the event takes place.

General Guidelines 1. Maximum of 3 members in a team.
2. Members of a team may be from same/ different college or branch or semester
3. Participants are required to get a declaration and Registration for signed by the respective HoD/Dean/Principal in addition to their institute.
4. The participant must have the ID Card during the event.
5. The use of 2.4 GHz radio is required for all aeromodels competing in the competition. If the participants want to use any other frequency, they will have to inform the organizers in advance.
6. Receivers installed in the aeromodel must be in 'receiver mode only'.
7. All the systems (Servos, motor, etc.) will be checked by host institute coordinator for functionality before the competition. If found not working, teams will be dismissed from the competition.
8. Pilot can position himself at any point in the arena to fly the aeromodel during the rounds. But one of the team member should call the steps as they are performed.
9. In view of stringent safety requirements, if a pilot flies out of the designated flying zone which includes overhead of the event organizing and control section, as mentioned at the venue, he/ she is disqualified and has to immediately turn back and land at any cost.
10. Teams are suggested to carry additional components (motors, batteries, propellers etc.) as needed to avoid last minute surprises at the venue. You will lose time/ attempt if you are not ready at the time of your turn.
11. Metal propellers are not allowed.
12. Pilot should fly only using transmitter and receiver.
13. The models can have powered take-off with a landing gear or can be launched manually by a person standing at ground level.
14. Aircraft should be built from scratch by the participants of the team and should not be a purchased model.
11. A team member can’t be a part of more than one team.
12. Teams cannot participate in more than one zonal event even if they do/do not qualify for the State round.
13. New members cannot be added to the teams who have been selected at Zonals to reach the State Round.
14. Bring your college/student I-Card at the time of competition.
15. Any of the above-mentioned rules, if found violated, teams would not be allowed to participate in the competition.
16. Each team is advised to bring all components for their aircraft although they are coming from same college. Any delay due to sharing of components might result in your team losing the time available for your attempt or lose the entire attempt itself.

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