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by bjt4888
February 26th, 2020, 2:38 am
Forum: Wright Stuff C
Topic: Wright Stuff C
Replies: 887
Views: 84508

Re: Wright Stuff C

A biplane suffers aerodynamic interference between its two overlapping wings. The high-pressure air below the upper wing and the low-pressure air above the lower wing tend to cancel each other out. Because of this aerodynamic interference, a biplane does not obtain twice the lift of a monoplane hav...
by bjt4888
February 23rd, 2020, 3:27 pm
Forum: Wright Stuff C
Topic: Wright Stuff C
Replies: 887
Views: 84508

Re: Wright Stuff C

Congratulations to all on your successes! Xiangyu, that video is not only a great time, it was aesthetically very pleasing to watch the plane carve the circles. Our regionals is next Saturday, so we've done everything we can. Reliable for us is 1'35" each way. We can get upwards of 1'50" each way b...
by bjt4888
February 22nd, 2020, 7:01 pm
Forum: Wright Stuff C
Topic: Wright Stuff C
Replies: 887
Views: 84508

Re: Wright Stuff C

Hello everyone, I just got back from the invite. Here's how it went: Took 1st overall with a combined flight time of 2:45 under 30 ft. First flight was good, to the right 1:41 no touch. The second flight...uhhhhh.... This is where things got wonky. I'm still not sure what exactly happened. Even tho...
by bjt4888
February 19th, 2020, 6:13 am
Forum: Wright Stuff C
Topic: Wright Stuff C
Replies: 887
Views: 84508

Re: Wright Stuff C

How do I decrease the total climb of the plane to accommodate for a lower ceiling, without losing out on too much flight time? Lorant, See the “winding” topic here from the 2015 Wright Stuff archive: https://scioly.org/forums/viewforum.php?f=191 Also, there are many helpful post in this forum. You ...
by bjt4888
February 16th, 2020, 2:41 pm
Forum: 2020 Invitationals
Topic: University of Michigan Scioly Invitational 2020
Replies: 33
Views: 5753

Re: University of Michigan Scioly Invitational 2020

If you are referring to the IM building near the “Hill Dorms”, seems like that would be workable. I think that there’s a footbridge over the main road, if I remember correctly (U of M LSA H 1974-77). The teams walk distances like this between events for States on the MSU campus. Another thought to a...
by bjt4888
February 16th, 2020, 11:29 am
Forum: 2020 Invitationals
Topic: University of Michigan Scioly Invitational 2020
Replies: 33
Views: 5753

Re: University of Michigan Scioly Invitational 2020

Also interested to hear top wright stuff times despite the pretty hazardous facility The two teams I coach that attended did not fly their real airplanes. Risk of damage was too high. "Room" was only 34 ft wide in the narrow dimension and was even narrower than that due to chairs and tables against...
by bjt4888
February 14th, 2020, 4:41 am
Forum: Wright Stuff C
Topic: Wright Stuff C
Replies: 887
Views: 84508

Re: Wright Stuff C

One more: don’t try to add more than a few turns at the very end of the process (no stretch).
by bjt4888
February 14th, 2020, 4:39 am
Forum: Wright Stuff C
Topic: Wright Stuff C
Replies: 887
Views: 84508

Re: Wright Stuff C

If your motors are consistently snapping at low winds a couple of things to look at: - Are you using good rubber? Not really much alternative to TAN Super Sport, unless you have a secret supply that has been properly stored of a good, old batch of TAN II. - Most obvious. Are you lubricating your mo...
by bjt4888
February 13th, 2020, 4:55 pm
Forum: Wright Stuff C
Topic: Wright Stuff C
Replies: 887
Views: 84508

Re: Wright Stuff C

We have been having some problems with our plane. I'll list the specs and the situation. 8.1g monoplane, Freedom flight model. Center of Gravity is 22.8cm from the nose. We used the props provided by the kit, which are 2-bladed and fit the 8cm gap. We strengthened them with clear tape rather than c...
by bjt4888
February 12th, 2020, 5:03 am
Forum: Wright Stuff C
Topic: Props
Replies: 5
Views: 1477

Re: Props

Yes, I agree with Crayola. In our initial build in October, my teams built two propeller designs each in several different pitches. Since then, we have tested several other designs also in various pitches. It only takes us about an hour or two to build a new propeller design, so easy to test lots of...

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