Rule Changes for 2020

   Synopsis of 2020 Scale Rule Changes Outdoor & Indoor RC

6.1.1    General Scale Rules

The general scale rules have been amended to note the following:

  • Multiple entries for certain competitions at the CD’s discretion.
  • It is the Competitors’ responsibility to download or obtain in advance the appropriate score sheets as they will not automatically be available at the competition.
  • Dolly and catapult launch systems are allowed with penalties as detailed in individual class rules
  • R/C Failsafe requirements

6.1.2    Static Judging

Clarification of the Documentation requirements regarding Proof of Texture.

6.3.1    Scale Radio Control

Addition of previously unwritten rules regarding the Flight Judges position, the Judges centre line and the addition of a restricted zone around the judges and pilot.

Incorporation of the previously unadopted FAI rules on judging Realism in Flight

Extensive revision of the Flight Scoresheet.

6.3.2    Scale R/C Stand-Off

Changes to Stand-Off Scale Static Judging rules and K-Factors to bring the class closer to the FAI F4H rules.

6.3.4    Scale Radio Control Indoor

An additional Indoor RC event has been introduced – RC Kit Scale – to provide an             introductory class for indoor RC building and flying to encourage new participants.

The indoor RC Flying Only class has been consolidated into the rule book to provide a simple, low key and fun event with the objective of encouraging new participants.

Models with electronic and/or gyro stabilisation devices will have their take-off and landing scores reduced by 40%.

In addition, the  Scale RC Indoor rules have been amended to note the following:

           RC Open Scale Class

Against the objective of emulating the full size subject from take off to landing

  • Dolly or catapult launch systems are allowed to facilitate modelling of war-bird etc. types.
  • No penalty for seaplanes/flying Boats or subjects that used dolly take off at full size. All other subjects have a 10% penalty applied to the take off score
  • Pilot not visible as per full size attracts 10% flight score penalty
  • Flight with un-retracted undercarriage attracts a 10% flight score penalty
  • 3 Optional manoeuvres

RC Kit Scale Class

  • Max flying weight = 300 gm
  • Max wing loading = 15 gm/dm2
  • Structure based on revised FF Indoor Kit Scale (Stick & Tissue) rules
  • Modifications for motor, RC and Scale control surfaces not penalised
  • Auto-stabilisation allowed with penalties
  • 2 Optional manoeuvres
  • To encourage building of new models, the winning model will not be eligible in future years

            RC Flying Only Class           

  • Max flying weight = 300 gm
  • Max wing loading = 15 gm/dm2
  • Modifications for motor, RC and Scale control surfaces not penalised
  • Auto-stabilisation allowed with penalties
  • 2 Optional manoeuvres

6.3.5    Scale Radio Control Helicopters

The Scale R/C Helicopter Rules which were introduced in 2014 to stimulate Scale Helicopter competition, have been removed from the Scale Rule Book due to lack of interest and to reduce the page count.

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Synopsis of 2020 Rule Updates Free Flight

Scale Outdoor FF

An additional outdoor free flight event has been introduced – Intermediate Scale – to  provide a competition based on a limited documentation requirement for those models, possibly of an open scale level of presentation, of subjects where the full requirement of the Open Class documentation cannot be satisfied.

The scoring for the Intermediate class retains an emphasis on flight performance over static rendition.

6.1.1   General Scale Rules

The general scale rules have been amended to note the following:

  • Multiple entries for certain competitions at the CD’s discretion.
  • It is the Competitors’ responsibility to down load appropriate score sheets as they will not automatically be available at the competition.
  • Dolly and catapult launch systems are allowed with penalties as detailed in individual class rules
  • Onus is on the competitor to claim any relevant flight bonuses

6.4.1    Open IC Class

The objectives of the Open Scale Classes are to emulate the full size subject aircraft both in static appearance and in flight performance as closely as possible.  The rules have been updated as follows:

  • Maximum motor size increased to allow 20/21 size 4 strokes on basis of allowing greater flexibility of subject, better sound representation with no associated power or overall model weight penalty compared with current rules.
  • New models for the 2020 and future seasons that are fitted with motors of >2.0 cc capacity must be fitted with a remote engine cut-off capable of terminating powered flight on demand when required for competitor/spectator safety.
  • Multiple engine bonus for thrust line separation >10% span
  • Take-offs utilising dolly and/or catapult assisted launch systems will be allowed. Unless the subject modelled is a Float Plane, Flying Boat or if the subject aircraft used an assisted launch technique, assisted take off will be subject to a penalty of -10% of the take off score.
  • Until such time as there are sufficient entries to support a dedicated competition and in order not to stifle continued development, Electronic Motion Stabilisation Devices (EMSDs) will be permitted in the Outdoor FF Open and Intermediate Scale competitions with associated penalties.
  • Static and Flight judging of EMSD assisted models will be undertaken as an integral part of the Open and Intermediate Scale competitions and flights for all models will be scored without taking cognisance of the use of EMSD assistance with flight penalties applied to EMSD equipped models to take into account EMSD benefits.
  • The penalties to be applied  are:

For single axis EMSD systems controlling lateral stability, the penalty to be applied will be the equivalent of the penalty applied for the use of grossly exaggerated dihedral  =  -10%

For single axis EMSD systems controlling the yaw or pitch axes, or multiple axis systems, the penalty will be that the model will not be eligible for a podium position.   However, competitors whose gyro assisted models are excluded will be allowed a second non-EMSD assisted entry to the competition.

Note: It is intended that, as soon as the level of EMSD assisted entry reaches a level where the provision of additional infrastructure, manpower and trophies etc. become viable, a dedicated competition will be introduced.

The scoring system is unchanged giving a Flight to Static ratio of approximately 1:1

6.4.2    Open Rubber Class

The objectives of the Open Scale Classes are to emulate the full size subject aircraft both in static appearance and in flight performance (from take-off from runway to return to and landing on the runway) as closely as possible. The rules have been updated as follows:

  • An optional take off element is re-introduced into the flight scoring schedule
  • Take-offs utilising dolly and/or catapult assisted launch systems will be allowed. Unless the subject modelled is a Float Plane, Flying Boat or if the subject aircraft used an assisted launch technique, assisted take off will be subject to a penalty of -10% of the take-off score.
  • Multiple engine bonus for thrust line separation >10% span.
  • EMSDs are eligible with penalties outlined in section 6.4.1

The scoring system is unchanged giving a Flight to Static ratio of approximately 1:1

6.4.3    Open CO2/E Class

The objectives of the Open Scale Classes are to emulate the full size subject aircraft both in static appearance and in flight performance as closely as possible. The rules have been updated as follows:

  • Models above 200gms fitted with electric motor(s) driving external propeller(s) must be fitted with a remote engine cut-off capable of terminating powered flight on demand when required for competitor/spectator safety. The device must also prevent the motor(s) being accidentally restarted if the model is picked up by a third party.
  • Take-offs utilising dolly and/or catapult assisted launch systems will be allowed. Unless the subject modelled is a Float Plane, Flying Boat or if the subject aircraft used an assisted launch technique, assisted take off will be subject to a penalty of -10% of the take off score.
  • Multiple engine bonus for thrust line separation >10% span
  • EMSDs are eligible with penalties outlined in section 6.4.1

The scoring system is unchanged giving a Flight to Static ratio of approximately 1:1

6.4.4    Intermediate Scale Class

The objective of the Intermediate Scale Class as for the Open Classes is to emulate the full size subject aircraft both in static appearance and in flight performance as closely as possible. The rules have been introduced as follows:

  • Minimum documentation of 3-view plus 1 photograph/Illustration or written description
  • Maximum surface area. = 150 dm2
  • Maximum weight of complete model without fuel. = 2 kg
  • Maximum wing loading = 50g/dm2 (16.4 oz/ft2)
  • Motive Power I/C Piston engine(s), CO2 or Electric Motors** or Rubber Motors

**         Batteries to be carried in the model

  • Maximum displacement permitted for two stroke engines is 2.5cm3 or for four stroke engines (marketed as .20/.21 size) is up to a maximum of 3.6cm3.
  • For multi-engine models, the maximum total displacement is limited to 5.0 cm3 for 2-stroke engines and 7.2 cm3 for 4-stroke engines.
  • Models with external propeller(s) driven by electric motor(s) and weighing above 200gms or fitted with IC motors of capacity > 2.0 cc must be fitted with a remote engine cut-off capable of terminating powered flight on demand when required for competitor/spectator safety. In the case of electric motors, the device must also prevent the motor(s) being accidentally restarted if the model is picked up by a third party.

The competitor may be required to demonstrate the effectiveness of any fitted cut-out safety device to the Competition Director before flights are carried out.

  • EMSDs are eligible with penalties outlined in section 6.4.1
  • Flight bonuses are as for the Open classes

The scoring system is defined to give a Flight to Static ratio of approximately 2:1

6.4.5    Rubber Precision Scale Class

This class is a development of the outdoor Kit Scale class and is intended to attract new participants to Free Flight Scale.  Competition flights are flown to a target duration as a means of testing rubber model trimming skills and hence rewards consistency over duration.  In response to requests for increased flexibility of model choice, the eligibility rules of the Kit Scale class have been expanded to include all FF scale rubber powered designs from published plans as well as kits and consequently, the class name has been changed to FF Outdoor Rubber Precision   Scale.  The rules have been updated as follows:

  • Competition now open to any rubber powered scale model that has been published in either kit form or as a plan from any source
  • Structural modifications and scaling remain as per 2019 rules
  • Fitting of DTs is permitted but with penalties for initiation before target flight time.

6.4.6    EJR Designs Element of Eddie Riding Trophy

The overall concept of the use of EJR plans only and the replication of EJR’s original intent remains but the static judging element has been further simplified in line with the Indoor Kit Scale approach.


Synopsis of 2020 Rule Updates Indoor Free Flight

Scale Indoor FF

Two additional indoor free flight competitions have been introduced.

The first, based on a limited documentation requirement, has been called – Intermediate Scale.  The objectives of the Intermediate scale class are to encourage flyers to progress from kit plan-based competition onto documentation-based competition, to provide a competition for refined kit based models to encourage new participants and to provide a competition for those models, possibly of an open scale level of presentation, of subjects where the full requirement of the Open Class documentation cannot be satisfied.

The scoring for this class retains an emphasis on flight performance over static rendition.

The second – Starter No-Cal Profile Scale – is based on the existing BMFA No-Cal Profile rules but is simplified and flown to a higher minimum weight (6 gm without rubber) to encourage new competitors and to encourage the greater use of FF indoor duration techniques in indoor scale modelling.

6.1.1   General Scale Rules

The general scale rules have been amended to note the following:

  • Multiple entries for certain competitions at the CD’s discretion.
  • It is the Competitors’ responsibility to down load appropriate score sheets as they will not automatically be available at the competition.
  • Dolly and catapult launch systems are allowed with penalties as detailed in individual class rules
  • Onus is on the competitor to claim any relevant flight bonuses

6.4.9    Open Rubber Class

The objective of the Class is to emulate the full size subject in appearance and in             flight from take off to landing.  The rules have been updated as follows:

  • Maximum weight limit increased to 250 gm
  • Auto-stabilisation devices not permitted
  • Dolly or catapult launch systems are allowed to facilitate modelling of war-bird etc. types. No penalty for seaplanes/flying Boats or subjects that used dolly take off at full size. All other subjects have a 10% penalty applied to the take off score
  • Multiple engine bonus for thrust line separation >10% span
  • Flight Realism element with more explicit definition in line with RC guidance

Scoring method remains as is to give a Flight to Static ratio of approximately 1:1

6.4.10  Open CO2/E Class

The objective of the Class is to emulate the full size subject in appearance and in             flight from take off to landing. The rules have been updated as follows:

  • Maximum weight limit increased to 250 gm
  • Auto-stabilisation devices not permitted
  • Dolly or catapult launch systems are allowed as detailed in Open rubber class
  • Multiple engine bonus for thrust line separation >10% span
  • Flight Realism element with more explicit definition in line with RC guidance

Scoring method remains as is to give a Flight to Static ratio of approximately 1:1

6.4.11  Intermediate Scale Class

            The objective of the Class is to emulate the full size subject in appearance and in             flight from take off to landing. The rules have been introduced as follows:

  • Weight limit = 250 gm
  • Max wing loading = 15 gm/dm2
  • Motive power = Rubber, CO2/E
  • Auto-stabilisation is not permitted
  • Dolly or catapult launch systems are allowed as detailed in Open Rubber class
  • Flight bonuses are as per Open classes
  • Multiple engine bonus for thrust line separation >10% span
  • Flight Realism element with more explicit definition in line with RC guidance

Scoring method defined to give a Flight to Static ratio of approximately 2:1

6.4.11  Kit Scale Class

The objective of the class is to provide a low key competition to encourage             newcomers and club flyers to take part in indoor scale competition.  The rules have    been revised to re-focus the class back to the original stick-and-tissue intent and             have been updated as follows:

  • Maximum weight limit increased to 250 gm
  • Power to be used as per original kit
  • Auto-stabilisation is not permitted

Scoring method updated to give a Flight to Static ratio of approximately 3:1

6.4.11  Peanut Scale Class

The class rules have been updated to reflect the simplicity of the class and the US       scoring system when it was introduced into the UK in order to provide a more             attractive route into indoor competition and, in so doing, encouraging new              competitors.  The aircraft and wing type bonuses have been updated to encourage       more diverse subjects. The rules have been updated as follows

  • Dolly launch systems are allowed as detailed in Open rubber class but catapult systems are inadmissible
  • Marking system updated to cater for modern and foam based materials
  • Simplified marking system with maximum marks per judge of approximately 50
  • Flight durations capped at 50 seconds plus take off bonus of 10 secs to encourage new entrants

Scoring method updated to give a Flight to Static ratio of approximately 4:1

6.4.11  Pistachio Scale Class

The class rules have been updated to mirror the changes made to the Peanut rules

Scoring method updated to give a Flight to Static ratio of approximately 4:1

6.4.11  Starter No-Cal Scale Class

The objective of this new class is to encourage the greater use of FF indoor duration techniques in indoor scale modelling and to provide greater opportunity for competitive flight during indoor FF scale events.  The rules have been introduced as follows:

  • The model must be a recognisable facsimile of a full size aircraft
  • Maximum Wing Span = 16”
  • Minimum model weight excluding motor = 6gm
  • Motive Power = Extensible Rubber motor(s)
  • Construction Materials = Balsa wood and Jap-tissue
  • The use of hi-tech materials such as boron, carbon fibre etc. is not permitted
  • The model must have control surface outlines, window outlines and typical colour scheme and registration markings.
  • The model must have the full landing gear as per the full sized aircraft. No profile gear is allowed.. Models of aircraft with retractable gear may be depicted with the gear retracted.
  • No mechanical means of varying the propeller pitch or wing incidence are permitted.
  • The onus is on the competitor to provide proof of existence of obscure subject aircraft should it be requested by the CD

 

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