Brand New T-one Eurofighter leading edge slats
06-14-2017, 05:08 PM
#1
Brand New T-one Eurofighter leading edge slats
Well I now have my Eurofighter jet from T-one and Pacific RC Jets and I might add, several months sooner than I original had thought. Awesome craftsmanship and the detail is amazing. This is a true eurofighter, not a eurosport. Among the many realistic features are leading edge slats. Again, they are formed and fit to perfection. However since there are no instructions for assembly( we are all use to this by now) and no apparent hardware, I'm on my own to figure out how to attach them. The modeler in me wants so bad to see those "sliding" slats function but the RC pilot in me says , it may be a disaster when it comes to functionality. The easy way is just to glue them in place and be done with it. The plane will fly normal. The hair-pulling , insane method would be to try and design an ergonomic system of servo driven levers and rails that would actually allow them to be deployed. It was suggested to me to pick the middle ground and permanently attach them but in a partially deployed position, such as shown in these photos. I would like to take a survey on here and get feedback on what you all think about this, what type of flight characteristics I would inherit and how much deployment can I have to give the illusion without changing terribly the way the plane flies.( since it will be a permanent position)
I'm also thinking of starting a build thread for this model if there is any interest by others to do so. Let me know
Thanks
Marc
I'm also thinking of starting a build thread for this model if there is any interest by others to do so. Let me know
Thanks
Marc
06-15-2017, 12:55 AM
#2
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In general delta wings are very forgiving, we know from the CARF Eurosport that it has carefree handling, so although the slats are a nice scale feature and they do show clearly in photos of the full-size when it is manoeuvering, it is hard to see what advantage they would give to the model's handling.
06-15-2017, 12:50 PM
#7
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For a slot to work it has to be a specific shape, and the size of the gap matters too. Any old random slot does not help a wing just because it is a slot. Unless both are correct you will add drag for no lift benefit and possibly make lift worse not better. The probability of both the shape and the depth of the slot being in the beneficial range is pretty remote especially if you are picking a depth at random, so the safest thing to do is glue them firmly shut!
06-15-2017, 03:03 PM
#8
Wait until I build the new one and I will let you know my opinion on it. If your not going to make them work then they need to be full up so the plane flies right at speed.
I'm pretty sure they won't do much and would only be a thing for people that like scale looks.
I'm pretty sure they won't do much and would only be a thing for people that like scale looks.
06-15-2017, 03:35 PM
#9
Agree with Harry,
I have fitted LE slats to a BVM F100. These surfaces travel out about 12 mm, and down about 5mm, measured at the root. They travel on three tracks which are factory fitted in each wing panel at BVM. They were relatively easy to fit, but all the hard engineering and alignments are done at factory. Still a lot of work though…
I would not recommend gluing your slats permanently partially open, unless you want to do all your flying at high AOA, or in the landing configuration.
The problem is, LE slats look really cool.
I have fitted LE slats to a BVM F100. These surfaces travel out about 12 mm, and down about 5mm, measured at the root. They travel on three tracks which are factory fitted in each wing panel at BVM. They were relatively easy to fit, but all the hard engineering and alignments are done at factory. Still a lot of work though…
I would not recommend gluing your slats permanently partially open, unless you want to do all your flying at high AOA, or in the landing configuration.
The problem is, LE slats look really cool.
Last edited by roger.alli; 06-15-2017 at 03:38 PM.
06-15-2017, 08:38 PM
#11
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Later f-86 and some retro fits utilized power to deploy the slat which controlled both sides together. I did a little work on a full scale. Local rc jet flyer here was an f-86 pilot. They went to power position because in a turn the air speed auto deploy were not linked, left and right side, timed together and could give asymmetrical deployment with very bad results. The cable system and adjusting just to keep the inboard and outboard on one side together is quite complicated.
06-15-2017, 10:04 PM
#12
Slats work (in simplified words) by accelerating air through a slot and thus getting a better, faster and more laminar airflow over the top of the wing at higher AOA. Your wing features a step from the size of my porch.....im afraid you wont be accellerating your airflow, but disturbing it in an unforseeable way. Judging from the pictures, a "smooth" retrofit would be a pain in the......well, id glue them on in ihe all closed position.
My $0.02
Hank
My $0.02
Hank
06-16-2017, 06:29 AM
#13
Guys thx so much for the varied input! That's exactly what I needed to hear ! BTW , the F100 looks really cool, nice job. Well since BVM didn't build this wing , sounds like I better glue them shut in full up position. I did read where some slats were free floating (relying on air speed to operate them), but that's full scale with full weight. I can imagine in a model the inconsistency would be significant, so that's not an option. I guess I'll just lose the "cool " factor.... like we say, once in the air , who can tell. I just wanted it for the static looks. Thanks again for responses
marc
marc
11-09-2017, 07:26 AM
#18
George you just glue them up. They are made separate so make them look more scale when installed. It works great. Everyone asks me if they are functional. Also while doing weathering you can get in the cracks deep to make it look more real.
I have taken this plane to a hover so no need to use slats to slow it more. It handles great at slow speeds. If you glue them half deployed your inverted performance will suffer.
11-10-2017, 05:26 AM
#20
My Feedback: (21)
Mmflytime. If you want to make them work, Look up the manual on the Skymaster web site for the large 1/5th F-86 Sabre. They have a very neat system for sliding hinges. It will take some building to make the hardware but it can be done. I used the slates on my large Sabre and they work fantastic and look great too when deployed. it really slows the Sabre down. I would not recommend having the slats free floating and deploy on there own. I read a book about the Blue Angels, when they where in the A-4 they had slats that would deploy when the air pressure over the wing dropped low enough. Problem was that while doing maneuvers, pressures would be different from one side of the jet to the other. They had a few instances when one slat would deploy and roll them over on their back . Once the team figured out what was happening. they bolted the slats shut. If you put them on the Eurofighter as operational, 2 servos in each wing will be needed to push them out. This is how the Sabre is set up.
You say there is no hardware for the slats? If so contact Dirk or Barry Pacific RC jets, find out why. I believe something was over looked
Good luck
Joe Lewis
Kingtech
K-80, K-140,K-180 owner
You say there is no hardware for the slats? If so contact Dirk or Barry Pacific RC jets, find out why. I believe something was over looked
Good luck
Joe Lewis
Kingtech
K-80, K-140,K-180 owner
Last edited by Jetpilot24; 11-10-2017 at 05:28 AM. Reason: addition
11-10-2017, 05:33 AM
#21
My Feedback: (21)
Well I now have my Eurofighter jet from T-one and Pacific RC Jets and I might add, several months sooner than I original had thought. Awesome craftsmanship and the detail is amazing. This is a true eurofighter, not a eurosport. Among the many realistic features are leading edge slats. Again, they are formed and fit to perfection. However since there are no instructions for assembly( we are all use to this by now) and no apparent hardware, I'm on my own to figure out how to attach them. The modeler in me wants so bad to see those "sliding" slats function but the RC pilot in me says , it may be a disaster when it comes to functionality. The easy way is just to glue them in place and be done with it. The plane will fly normal. The hair-pulling , insane method would be to try and design an ergonomic system of servo driven levers and rails that would actually allow them to be deployed. It was suggested to me to pick the middle ground and permanently attach them but in a partially deployed position, such as shown in these photos. I would like to take a survey on here and get feedback on what you all think about this, what type of flight characteristics I would inherit and how much deployment can I have to give the illusion without changing terribly the way the plane flies.( since it will be a permanent position)
I'm also thinking of starting a build thread for this model if there is any interest by others to do so. Let me know
Thanks
Marc
I'm also thinking of starting a build thread for this model if there is any interest by others to do so. Let me know
Thanks
Marc
Joe Lewis
Kingtech
K-80,K-140,K-180
Owner
Last edited by Jetpilot24; 11-11-2017 at 04:51 AM. Reason: spelling
11-10-2017, 01:43 PM
#25
http://www.rcuniverse.com/forum/images/icons/icon7.gif
Kris,
I agree. Would be curious to hear from pilots that have fixed the slats at a certain noticeable position to " simulate use" and comment on its flight characteristics. But it sounds like it is a sweet flyer just the way it is stock. I hope to experience that some day!
I agree. Would be curious to hear from pilots that have fixed the slats at a certain noticeable position to " simulate use" and comment on its flight characteristics. But it sounds like it is a sweet flyer just the way it is stock. I hope to experience that some day!