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Showing results for tags 'f5-res'.
Found 13 results
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Having seen several F3-RES gliders hit wing flutter on the bungee and watched as tailplane flutter led to the sad demise of an F5-RES under power on Saturday, I thought it was about time I got past my own limited understanding and read more about the causes and cures. I found the link below a useful summary of the physics of causes and fixes. If you want to skip the maths, look at the pictures then jump to page 9 for a summary of the problem and possible fixes. I've posted this to the Facebook group too as I know not everyone is on BARCS. https://www.kimerius.com/app/download/5784128815/Aerodynamic+Flutter.pdf
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A placeholder for the 12th 2021 F3-RES/F5-RES Combined 14 day duration postal. This is an experimental event and the rules may be altered for subsequent challenges. Please submit your score below. The 14 day clock will start when the first score is submitted and will restart if and when the current high score has been beaten. This is a for fun challenge for UK based pilots, anyone may enter with EITHER 1. a bungee-launched glider up to 2 metres wingspan and the standard Hi-Start can post a time. The standard Hi-Start bungee is a maximum of 10m of 6/4mm surgical tubing and 50m of static line (minimum 30lb breaking strain). Lighter/smaller bungee rubber may be used. OR 2. an Electric motor launched glider up to 2 metre wingspan fitted with an Altitude Limiter set to 60m and a maximum motor run time of 20 seconds. Object: Fly your 2 metre wingspan glider for as long as possible from a flat field, the person who's time is unbeaten for 14 days 'wins' and a new challenge starts. Rules: Flight times begin when line releases from the tow-hook or in the case of an electric motor powered glider, 20 seconds after the hand launch. The model must land in the launch field for times to count. While the object is to encourage F3/F5-RES types, any model up to 2 metre span may be flown (F3/F5-RES, foam, R/E mouldie) but please state the type of model with your time. Note that ailerons or other camber changing devices fitted are no longer permitted, even if disabled. All scoring flights must start with a hand release from Ground Level No Flight information telemetry permitted except for Received signal strength and Receiver battery status. Fly safely! No slope soaring
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A placeholder for the 11th 2021 F3-RES/F5-RES Combined 14 day duration postal. This is an experimental event and the rules may be altered for subsequent challenges. Please submit your score below. The 14 day clock will start when the first score is submitted and will restart if and when the current high score has been beaten. This is a for fun challenge for UK based pilots, anyone may enter with EITHER 1. a bungee-launched glider up to 2 metres wingspan and the standard Hi-Start can post a time. The standard Hi-Start bungee is a maximum of 10m of 6/4mm surgical tubing and 50m of static line (minimum 30lb breaking strain). Lighter/smaller bungee rubber may be used. OR 2. an Electric motor launched glider up to 2 metre wingspan fitted with an Altitude Limiter set to 60m and a maximum motor run time of 20 seconds. Object: Fly your 2 metre glider for as long as possible from a flat field, the person who's time is unbeaten for 14 days 'wins' and a new challenge starts. Rules: Flight times begin when line releases from the tow-hook or in the case of an electric motor powered glider, 20 seconds after the hand launch. The model must land in the launch field for times to count. While the object is to encourage F3/F5-RES types, any model up to 2 metre span may be flown (F3/F5-RES, foam, R/E mouldie) but please state the type of model with your time. Note that ailerons or other camber changing devices fitted are no longer permitted, even if disabled. No Flight information telemetry permitted except for Received signal strength and Receiver battery status. Fly safely! No slope soaring
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A placeholder for the 10th 2021 F3-RES/F5-RES Combined 14 day duration postal. This is an experimental event and the rules may be altered for subsequent challenges. Please submit your score below. The 14 day clock will start when the first score is submitted and will restart if and when the current high score has been beaten. This is a for fun challenge for UK based pilots, anyone may enter with EITHER 1. a bungee-launched glider up to 2 metres wingspan and the standard Hi-Start can post a time. The standard Hi-Start bungee is a maximum of 10m of 6/4mm surgical tubing and 50m of static line (minimum 30lb breaking strain). Lighter/smaller bungee rubber may be used. OR 2. an Electric motor launched glider up to 2 metre wingspan fitted with an Altitude Limiter set to 60m and a maximum motor run time of 20 seconds. Object: Fly your 2 metre glider for as long as possible from a flat field, the person who's time is unbeaten for 14 days 'wins' and a new challenge starts. Rules: Flight times begin when line releases from the tow-hook or in the case of an electric motor powered glider, 20 seconds after the hand launch. The model must land in the launch field for times to count. While the object is to encourage F3/F5-RES types, any model up to 2 metre span may be flown (F3/F5-RES, foam, R/E mouldie) but please state the type of model with your time. Note that ailerons or other camber changing devices fitted are no longer permitted, even if disabled. No Flight information telemetry permitted except for Received signal strength and Receiver battery status. Fly safely! No slope soaring
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A placeholder for the 7th combined 2M F3-RES, F5-RES 14 day duration Challenge for 2021. This is an experimental event and the rules may be altered for subsequent challenges. Please submit your score below. The 14 day clock will start when the first score is submitted and will restart if and when the current high score has been beaten. This is a for fun challenge for UK based pilots, anyone may enter with EITHER 1. a bungee-launched glider up to 2 metres wingspan and the standard Hi-Start can post a time. The standard Hi-Start bungee is a maximum of 10m of 6/4mm surgical tubing and 50m of static line (minimum 30lb breaking strain). Lighter/smaller bungee rubber may be used. OR 2. an Electric motor launched glider up to 2 metre wingspan fitted with an Altitude Limiter set to 60m and a maximum motor run time of 20 seconds. Object: Fly your 2 metre glider for as long as possible from a flat field, the person who's time is unbeaten for 14 days 'wins' and a new challenge starts. Rules: Flight times begin when line releases from the tow-hook or in the case of an electric motor powered glider, 20 seconds after the hand launch. The model must land in the launch field for times to count. While the object is to encourage F3/F5-RES types, any model up to 2 metre span may be flown (F3/F5-RES, foam, R/E mouldie) but please state the type of model with your time. Note that ailerons or other camber changing devices fitted are no longer permitted, even if disabled. No Flight information telemetry permitted except for Received signal strength and Receiver battery status. Fly safely! No slope soaring
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A placeholder for the 6th combined 2M F3-RES, F5-RES 14 day duration Challenge for 2021. This is an experimental event and the rules may be altered for subsequent challenges. Please submit your score below. The clock will start when the first score is submitted and will restart if and when the current high score has been beaten. This is a for fun challenge for UK based pilots, anyone may enter with EITHER 1. a bungee-launched glider up to 2 metres wingspan and the standard Hi-Start can post a time. The standard Hi-Start bungee is a maximum of 10m of 6/4mm surgical tubing and 50m of static line (minimum 30lb breaking strain). Lighter/smaller bungee rubber may be used. OR 2. an Electric motor launched glider up to 2 metre wingspan fitted with an Altitude Limiter set to 60m and a maximum motor run time of 20 seconds. Object: Fly your 2 metre glider for as long as possible from a flat field, the person who's time is unbeaten for 14 days 'wins' and a new challenge starts. Rules: Flight times begin when line releases from the tow-hook or in the case of an electric motor powered glider, 20 seconds after the hand launch. The model must land in the launch field for times to count. While the object is to encourage F3/F5-RES types, any model up to 2 metre span may be flown (F3/F5-RES, foam, R/E mouldie) but please state the type of model with your time. Note that ailerons or other camber changing devices fitted are no longer permitted, even if disabled. No Flight information telemetry permitted except for Received signal strength and Receiver battery status. Fly safely! No slope soaring
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A placeholder for the 5th combined 2M F3-RES, F5-RES 14 day duration Challenge for 2021. This is an experimental event and the rules may be altered for subsequent challenges. Please submit your score below. The clock will start when the first score is submitted and will restart if and when the current high score has been beaten. This is a for fun challenge for UK based pilots, anyone may enter with EITHER 1. a bungee-launched glider up to 2 metres wingspan and the standard Hi-Start can post a time. The standard Hi-Start bungee is a maximum of 10m of 6/4mm surgical tubing and 50m of static line (minimum 30lb breaking strain). Lighter/smaller bungee rubber may be used. OR 2. an Electric motor launched glider up to 2 metre wingspan fitted with an Altitude Limiter set to 60m and a maximum motor run time of 20 seconds. Object: Fly your 2 metre glider for as long as possible from a flat field, the person who's time is unbeaten for 14 days 'wins' and a new challenge starts. Rules: Flight times begin when line releases from the tow-hook or in the case of an electric motor powered glider, 20 seconds after the hand launch. The model must land in the launch field for times to count. While the object is to encourage F3/F5-RES types, any model up to 2 metre span may be flown (F3/F5-RES, foam, R/E mouldie) but please state the type of model with your time. Note that ailerons or other camber changing devices fitted are no longer permitted, even if disabled. No Flight information telemetry permitted except for Received signal strength and Receiver battery status. Fly safely! No slope soaring
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A placeholder for the 4th combined 2M F3-RES, F5-RES 14 day duration Challenge for 2021. This is an experimental event and the rules may be altered for subsequent challenges. Please submit your score below. The clock will start when the first score is submitted and will restart if and when the current high score has been beaten. This is a for fun challenge for UK based pilots, anyone may enter with EITHER 1. a bungee-launched glider up to 2 metres wingspan and the standard Hi-Start can post a time. The standard Hi-Start bungee is a maximum of 10m of 6/4mm surgical tubing and 50m of static line (minimum 30lb breaking strain). Lighter/smaller bungee rubber may be used. OR 2. an Electric motor launched glider up to 2 metre wingspan fitted with an Altitude Limiter set to 60m and a maximum motor run time of 20 seconds. Object: Fly your 2 metre glider for as long as possible from a flat field, the person who's time is unbeaten for 14 days 'wins' and a new challenge starts. Rules: Flight times begin when line releases from the tow-hook or in the case of an electric motor powered glider, 20 seconds after the hand launch. The model must land in the launch field for times to count. While the object is to encourage F3/F5-RES types, any model up to 2 metre span may be flown (F3/F5-RES, foam, R/E mouldie) but please state the type of model with your time. Note that ailerons or other camber changing devices fitted are no longer permitted, even if disabled. No Flight information telemetry permitted except for Received signal strength and Receiver battery status. Fly safely! No slope soaring
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A placeholder for the 3rd combined 2M F3-RES, F5-RES 14 day duration Challenge for 2021. This is an experimental event and the rules may be altered for subsequent challenges. Please submit your score below. The clock will start when the first score is submitted. This is a for fun challenge for UK based pilots, anyone may enter with EITHER 1. a bungee-launched glider up to 2 metres wingspan and the standard Hi-Start can post a time. The standard Hi-Start bungee is a maximum of 10m of 6/4mm surgical tubing and 50m of static line (minimum 30lb breaking strain). Lighter/smaller bungee rubber may be used. OR 2. an Electric motor launched glider up to 2 metre wingspan fitted with an Altitude Limiter set to 60m and a maximum motor run time of 20 seconds. Object: Fly your 2 metre glider for as long as possible from a flat field, the person who's time is unbeaten for 14 days 'wins' and a new challenge starts. Rules: Flight times begin when line releases from the tow-hook or in the case of an electric motor powered glider, 20 seconds after the hand launch. The model must land in the launch field for times to count. While the object is to encourage F3/F5-RES types, any model up to 2 metre span may be flown (F3/F5-RES, foam, R/E mouldie) but please state the type of model with your time. Note that ailerons or other camber changing devices are no longer permitted. No Flight information telemetry permitted except for Received signal strength and Receiver battery status. Fly safely! No slope soaring
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A placeholder for the 2nd combined 2M F3-RES, F5-RES 14 day duration Challenge for 2021. This is an experimental event and the rules may be altered for subsequent challenges. Please submit your score below. The clock will start when the first score is submitted. This is a for fun challenge for UK based pilots, anyone may enter with EITHER 1. a bungee-launched glider up to 2 metres wingspan and the standard Hi-Start can post a time. The standard Hi-Start bungee is a maximum of 10m of 6/4mm surgical tubing and 50m of static line (minimum 30lb breaking strain). Lighter/smaller bungee rubber may be used. OR 2. an Electric motor launched glider up to 2 metre wingspan fitted with an Altitude Limiter set to 60m and a maximum motor run time of 20 seconds. Object: Fly your 2 metre glider for as long as possible from a flat field, the person who's time is unbeaten for 14 days 'wins' and a new challenge starts. Rules: Flight times begin when line releases from the tow-hook or in the case of an electric motor powered glider, 20 seconds after the hand launch. The model must land in the launch field for times to count. While the object is to encourage F3/F5-RES types, any model up to 2 metre span may be flown (F3/F5-RES, foam, R/E mouldie) but please state the type of model with your time. Note that ailerons or other camber changing devices are no longer permitted. No Flight information telemetry permitted except for Received signal strength and Receiver battery status. Fly safely! No slope soaring
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The final table. Double click to make it legible. The controversy... 2 or 3 years ago, when I first published the rules, I stated that it was the top 7 results to count. In the event of a draw, the 8th would be included etc. However, when I updated the rules last year, I didn't include that paragraph so technically, all 12 challenges count. This makes Graham Lorimer the winner who scored in every challenge. That deserves a medal simply for perseverance. However, if only the highest 7 results counted then CirrusRC would have have won. I will open a new posting for 2022 rules discussion but I would like to thank all those who participated for making the event so worthwhile. Give yourselves a big clap. So, well done to Graham, A very big well done to CirrusRC for that mammoth 2 hour plus flight - that will take some beating I would imagine And finally well done to Anthony who started later but climbed steadily through the ranks to finish 3rd. Only virtual trophies with virtual champagne awarded. You can get yourselves virtually drunk. Best wishes
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A placeholder for the 1st combined 2M F3-RES, F5-RES 14 day duration Challenge for 2021. This is an experimental event and the rules may be altered for subsequent challenges. Please submit your score below. The clock will start when the first score is submitted. This is a for fun challenge, anyone may enter with EITHER 1. a bungee-launched glider up to 2 metres wingspan and the standard Hi-Start can post a time. The standard Hi-Start bungee is a maximum of 10m of 6/4mm surgical tubing and 50m of static line (minimum 30lb breaking strain). Lighter/smaller bungee rubber may be used. OR 2. an Electric motor launched glider up to 2 metre wingspan fitted with an Altitude Limiter set to 60m and a maximum motor run time of 20 seconds. Object: Fly your 2 metre glider for as long as possible from a flat field, the person who's time is unbeaten for 14 days 'wins' and a new challenge starts. Rules: Flight times begin when line releases from the towhook or in the case of an electric motor powered glider, 20 seconds after the hand launch. The model must land in the launch field for times to count. While the object is to encourage F3/F5-RES types, any model up to 2 metre span may be flown (F3/F5-RES, foam, R/E mouldie) but please state the type of model with your time. Note that ailerons or other camber changing devices are no longer permitted. No Flight information telemetry permitted except for Received signal strength and Receiver battery status. Fly safely! No slope soaring
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There has been some discussion on various posts about a new F5-RES class and what the rules should look like. This post is intended as a discussion post to hopefully pool some ideas. F5-RES kits and ARTF airframes are already available from various specialist suppliers. 1. Airframe construction and restriction rules should be the same as F3-RES. 2. Regarding open events, I can't see why the class could not be run in parallel (as a sub class) with existing F5J events to the same sets of rules. 3. If the class is to be run in parallel with F3-RES events then perhaps the following. Motor Run maximum 20 seconds Altitude limited to 130m The reason for this is that you would need to limit how far upwind from the launch point a F5-RES could get - assuming its launched from the same line that a bungee launched F3-RES model is launched. F3-RES open rules use a 100m line and 15m bungee. Assume that a launch height of 100m plus any zoom gain. 130m seems reasonable as typically a F5-RES is carrying increased cross sectional area/drag and more mass - which would be advantageous in a breeze. This would also apply to a dedicated F5-RES event with a 6 minute flight task maximum 4. If the class is to be run in parallel with F3-RES small field events (e.g. BARCS postal) then perhaps the following. Motor Run maximum 15 seconds Altitude limited to 70m Your thoughts please. It appears that there will be a couple of F5-RES events in the UK next year (2021) and it would be nice to influence any rules in advance of an event.
