Toronto Free Flight

Tag: F1A

An Open Letter To All Interested F1A Flyers, Clubs and Societies (from Brian Eggleston , Toronto, Canada)

by on Mar.17, 2009, under Posts

I have recently contacted Prof. Michael Selig who is renowned for designing low RN airfoils and their testing in the low turbulence wind tunnel facility at the University Illinois Urbana-Champaign (UIUC). They have already tested many airfoils suitable for RC models and FAI sailplane categories, plus a few F1C airfoils. Several reports on this work have been issued by SoarTech that contain useful data at model RN and also includes comparisons with XFOIL predictions.

There is a critical shortage of reliable wind tunnel test data on airfoils for the F1A category of Free Flight models that would help flyers select airfoils for their new projects. Also there is an increasing interest in using tools like XFOIL, and the version incorporated in Profili, to design improved airfoils for the future. Having a compendium of good test data encompassing currently popular airfoils and promising new designs of airfoils, would greatly assist the F1A fraternity and also other Free Flight categories.

With that in mind I contacted Prof Selig to ascertain his interest and he has responded very positively. So I want to establish the level of interest amongst individual modellers, clubs and National Societies in their participation with sponsorship or donations, and the supply of suitable wind tunnel models.  Costs will depend on the number of models involved and the duration of the tests, as there are significant fixed costs for setting up and dismantling the special facility.  Prof. Selig has indicated that testing fifteen two-dimensional airfoil models could take about one month. Airfoil testing at low RNs is tricky but the quality at UIUC is amongst the best available anywhere at a reasonable cost.

So, I am undertaking a preliminary survey about the level of interest.

*Would you (individual, club, National Society) be interested in participating in this initiative? 

If yes, would you then:

*Provide a donation (nominally in units of US$1000 -2000, but any appreciated), the target is in the mid five figures. 

*Require access to the preliminary data report 

*Commit to provide a wind tunnel model for testing (specifications given below, good accuracy required)

*Want the model digitized afterwards for checking the accuracy.

*Recommend existing airfoils for testing 

*Have a promising new airfoil design and provide wind tunnel model(s) suitable for testing

 

Once enough interest is established in the project, the management of funds will likely be handled by a national society or major club to be determined.  Coordination and liaison with UIUC and organizing manufacture of the models will likely require significant part-time effort from persons familiar with wind tunnel models and their testing.  

 

This is an exceptional opportunity to use a highly regarded test facility and thereby raise the standard of excellence in F1A modelling. Please reply to me at the email address given below. You will be kept advised of the status of the project as it evolves.

 

Brian Eggleston

 beggleston@rogers.com

For more details on the facility, the wind tunnel model design requirements and the kind of testing and data produced, look at :

www.soartech-aero.com/#V1

www.ae.uiuc.edu/m-selig/uiuc_lsat.html

www.ae.uiuc.edu/m-selig/uiuc_lsat/modelNotes.html

www.ae.uiuc.edu/m-selig/uiuc_lsat/vol4/NREL-SR-500-34515.pdf

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Report – Pan American Open (by Ron Felix)

by on Mar.12, 2009, under Reports

This contest was originated by Chris Lenartowicz, with the help of Peter Allnutt and Ron Felix – thus making it a joint Canadian & American effort. The purpose of the contest was to fill the need for a team-type competiton in this Hemisphere, similar to that of a European Champs. The award structure was created to acknowledge both teams and individuals from the Americas, as well as teams and individuals from outside the Americas – in essence, it was Pan American as well as Open.
To clarify this further, four (4) distinct contests were run concurrently:

1. One contest was for Individuals from countries within the Americas in F1A, F1B, and F1C, with gold medals for the first place winners in each event.

2. Another contest was for three-person teams from countries within the Americas (i.e., all team members are Canadian or USA, with no limit on the number of teams), involving F1A teams, F1B teams, and F1C teams. Gold medals were awarded to each team member on the first place teams for each event.

3. Open – A contest for individuals from any nation in F1A, F1B, and F1C, with gold, silver & bronze medals in each event for the first three places.

4. Open – A contest for three-person teams of any national or mixed makeup, involving teams for F1A, F1B, and F1C. Awards were medals – three golds, three silvers, and three bronzes, which were given to each team member on the first, second, and third place teams respectively.
In addition, diplomas were given to all participants, regardless of their placing in their entered event.
Up until Wednesday the day before the contest, it was not clear how many people would ultimately pay and enter this contest. However, a forcast for good weather the following day (along with forecasted possible bad weather during the Max-Men Weekend), brought out many additional paying entries at the last minute. It simply appeared that many decided to take advantage of the forecasted good weather and compete. As such, registration the evening before and during the morning of the contest made for some hectic administration.
The contest day started with light winds out of the west, and these gently shifted as the day progressed – eventually ended up with a light breeze blowing to the west. Winds were light enough to keep models visible throughout the day, and into the flyoffs – where binoculars were necessary. Temperatures ranged from approximately 40 degrees F to 60 degrees F throughout the day, and the skies varied from cloudy to partly cloudy. Throughout the day, we were also lucky to be spared from any rain or showers.
The standard of flying was very high – in no small part due to the very high caliber of the competitors themselves. In addition, it was apparent that many were also very determined to get ready for the World Champs. This was the case in all events, but especially in F1A. One flyer told us that he would never have thought that after making seven maxes, then making the five minute max, and then the seven minute max in the flyoffs- that he was ONLY able to finish 15th after the final round. It should also be said that some Teams – the USA included, used this as a team practice competition for the upcoming World Champs in Croatia. In this case, they flew in rotation, one man in the air at one time, during which time they were overseen by their Team Manger.
Scoring was run manually on desk-top mounted sheets, along with a large movable-position scoreboard with individual placards for each competitor. This was designed and constructed by Peter Allnutt specifically for this event. In addition, the use of a computer with an Excel Spreadsheet controlled/backed everything up until the fifth round. However, a computer crash created a pandemonium in the manual scoring because of the tedious team calculations. This was the situation right up until the contest end. After finding an oversight in not including one team, the final calculations had to be completed and checked the following day. As such, the team awards took place at the Max Men Banquet with the permission of Mr. Jim Parker, President of SCAT.
The contest ended with champagne, beer, wine and potato chips on the field, provided by Peter Allnutt. Judging by the amount of “empties” found on the ground the following morning, we assume that many people had a good time.
It must be said that help was given by many to run this contest, and this included Canadians and Americans, as well as the SCAT and the Max-Men organizations. We are indebted to them for providing their encouragement, help, and some equipment, for which we are very thankful.

Ron Felix

Here are the results: F1A, F1B, F1C

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2008/2007 Huron Cup

by on Feb.23, 2009, under Photos

Hey – some cooperation at last. Below are some nice pics from the last two Huron Cup competitions.
Thanks Yury!!!

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2009 Pan-American

by on Feb.23, 2009, under Photos

Hey, it was a great day for a competition (unlike the windy MaxMan).
Check out the results and enjoy the pics

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