5iMX.com 我爱模型 玩家论坛 ——专业遥控模型和无人机玩家论坛（玩模型就上我爱模型，创始于2003年）

标题: 推荐一款好飞宜做的水上草地机 [打印本页]
作者: flowerains    时间: 2009-4-12 11:06
标题: 推荐一款好飞宜做的水上草地机
很久之前就想搞个水鸡了，但是一直以来都没有合适的，朋友买了好几架卡塔琳娜，总是飞的不好，终于在rcgroup上看到了一个比较有个性的，利用清明节小长假在家里做了一个。经过自己制作并试飞，发现这个水鸡好做，对设备要求不高，但是飞行性能很好，而且从水面起飞也很简单，的确值得推荐，马鞍山两个模友看过后已经在做了，好东西和大浆分享。这是这个飞机的制作图纸和制作过程http://www.rcgroups.com/forums/showthread.php?t=922465&highlight=polaris。
Here's my latest design to share with the forum, a foam parkflyer adaptation of Laddie Mikulasko's beautiful Northstar seaplane. I named this design Polaris to pay homage to the original (for those that don't know, Polaris is the astronomical name of the real North Star). I owned a Balsa USA Northstar kit back in the late 1980s and have loved the design ever since. This design was intended to be as true as possible in outline to the original, but I did make several modifications to adapt it to simple sheet foam construction, electric propulsion, and to better suit the parkflyer role. The most obvious changes are larger empennage, larger control surfaces, and a slightly deeper hull (see the comparison pic below), all of which improve low speed handling for better parkflyerability.

This model handles BEAUTIFULLY both in the air and on the water, and is a real joy to fly. It's well-mannered, smooth and stable at all speeds and aerobatics are a breeze, but to me one of the best things about this model is the amazing speed range—top speed is in excess of 70 mph, yet the model slows down well and can plop down into the water at high alpha under full control at less than 10 mph. This allows the model to be flown in very tight spaces if desired, or if you have a bigger flying site you can open it up and enjoy the speed. It handles wind and waves remarkably well, too. This model also flies very well off of grass—takeoffs require only 10-20 feet and it can even do easy touch and goes off grass.

Here are the technical specs:

Wing area: 343 sq in
Span: 29.0"
Length: 38.4"
Weight RTF: 20 oz
Wing loading: 8.4 oz/sq ft
Motor: Grayson 2212-06
Battery: Thunder Power 2100 mAh 11.1V Prolite
Prop: APC 6x4
Current: 22 amps
Watts: 240 watts
Power loading: 190 watts/lb
Speed control: Grayson 30 amp
Receiver: Berg 7P
Flight controls: Elevator, ailerons, rudder

This model was designed to use a Grayson 2212-06 motor and 3s 2100 mAh lipo. At 20 oz AUW, this motor provides 190 watts per lb, 1.3:1 static thrust-to-weight ratio for unlimited vertical, and 70+ mph top speed—and all at a very light wing loading of 8 oz/sq ft. Plus the small 6" diameter prop minimizes torque effects and allows for a low thrust line to minimize thrust-induced pitch changes. And to top it all off, this motor is very inexpensive ($39.99 for BOTH the motor and ESC!), so any worries about potential water damage are greatly reduced. Other motors that could work well on this model are the Littlescreamers Park Jet (with 6x4 prop) or Super Park Jet (with 7x5 prop). In fact, with the LSPJ motor and 1320 mAh battery, AUW would be only 17 oz—resulting in an extremely low wing loading but still over 1:1 thrust-to-weight ratio for excellent performance. This model was designed to accommodate up to a 7" diameter prop—just mount the motor at the bottom of the firewall if using a 6" prop and at the top of the firewall if using a 7" prop.

Like most seaplanes this model has a high thrust line, however, there is very little pitch trim change with throttle. That's primarily because both the motor and horizontal stabilizer are installed with -2 degrees incidence relative to the wing. The only time I've noticed a pitch trim change with throttle is during VERY slow high alpha flying, where going to full throttle quickly will pitch the nose down. Since the elevator is directly in the prop blast there's plenty of control power to correct, but if you just advance the throttle smoothly you won't even have to worry about it. But most of the time when flying this bird, you don't have to worry about the high thrust line at all.

One of the secrets behind the fantastic slow speed controllability of this model is the location of the prop right in front of the elevator and rudder. That not only gives this model great slow speed control, but also gives it a degree of control similar to my thrust vectoring park jets. At slow speeds, the model will loop and yaw VERY quickly if you give a quick blip of throttle along with the control input!

The finish on my model is just bare foam with some colored packing tape for trim. This keeps the model very light, quick to build, and also makes it easy to repair. Plus the packing tape is strategically placed in areas that need to be strengthened anyway for a seaplane—the bottom of the fuselage and the leading edges of the wings and tail. Hence this paint scheme!

EDIT (4-30-09): For those that want to save time over scratch building this model, a complete laser cut kit is now available at Model Aero. Here's a link:

http://modelaero.com/Merchant5/merch...tegory_Code=AM

And here's a link to a fantastic review by Jon Barnes of the Model Aero Polaris kit. LOTS of great photos and videos in this review!

http://www.rcgroups.com/forums/showthread.php?t=954314

VIDEOS

Here's a YouTube flight video of this model flying off water:

Polaris Seaplane Parkflyer (5 min 1 sec)


And here's a video of flying off snow:

http://www.vimeo.com/2623048

Attached Thumbnails
Here are some photos showing the construction details for this model. If you've built any of my pusher-prop park jet designs before, you won't see anything new here.

This model features all internal servos and linkages to make it as watertight as possible. The only places for water to enter the hull are the 4 pushrod exits, which can all be sealed with grease or Vaseline. The elevator servo is mounted inside the nacelle, and a channel inside the vertical tail allows the motor power wires and elevator servo wires to be run internally.

The #1 glue I recommend for building this bird is epoxy mixed with microballons, since it's lightweight, cures quickly, and perhaps best of all, is pure white to match the color of the Depron perfectly. That makes most of the seams invisible. I also applied beads of epoxy/microballons at all structure intersections to waterproof the model.
Attached Thumbnails
Plans for this model are posted below in the usual tiled and untiled formats. I'd recommend taking the untiled plans to Kinkos, who will print them for only a few dollars.

I hope others enjoy this model as much as I have. But remember, the only rule is—if you build it, you gotta post pictures!

EDIT (9/20/08): An illustrated construction guide has been added to the attachments below.

EDIT (11/7/08): Revised plans and construction photos showing a new nacelle design option are posted in post #392 (link below):

http://www.rcgroups.com/forums/showp...&postcount=392

Steve
Attached Thumbnails Attached Files
作者: flowerains    时间: 2009-4-12 11:10
对了，介绍一下我的配置：xxd2208kv1500+7060+20A电调+老b1000mah11.1v电池+孵化器6通接收+辉盛9g三个，起飞重量（含1000mah电池）385g。

[ 本帖最后由 flowerains 于 2009-4-12 11:12 编辑 ]
作者: yljon    时间: 2009-4-12 12:04
加一个轮子＝水＋陆＋空

:em24: :em24:
作者: 风飞    时间: 2009-4-12 12:06
好机，很喜欢，但自己不会做:em12: ，楼主能帮忙做一架吗所以费用我给:em05:
作者: soone    时间: 2009-4-12 12:23
不错
作者: flowerains    时间: 2009-4-12 13:45
标题: 回复 板凳 的帖子
呵呵，我只是爱好，如果你在马鞍山可以教你做，外地的实在没办法了
作者: flowerains    时间: 2009-4-12 13:47
标题: 回复 藤椅 的帖子
不用加轮子，可以在草地或者平整的地面起飞的
作者: yqyqingyv    时间: 2009-4-12 14:16
真漂亮啊@@
作者: fusu123    时间: 2009-4-12 15:17
楼主  麻烦给发份图纸   谢谢fusu11fusu@.qq.com
作者: flowerains    时间: 2009-4-12 15:46
标题: 回复 9楼 的帖子
兄弟，看帖太不仔细了，要打pp哦，我在帖子里已经发了图纸和制作网站，仔细看看
作者: QQ哥    时间: 2009-4-12 20:04
:em07: 做的不错哦
作者: 飞行无极限    时间: 2009-4-12 20:15
确实不错。
作者: 罪人    时间: 2009-4-12 20:46
:em15: :em15: 好东西 学习下
作者: 北部湾海盗    时间: 2009-4-12 21:27
xion
作者: EternalLove    时间: 2009-4-12 21:55
:em00: :em00: :em00:

楼主,你发的网站我打不开,可以给我发份图纸吗,先谢了...

邮箱:wendy19910906@sina.com
作者: 金海岸    时间: 2009-4-13 05:46
楼主  麻烦给发份图纸   谢谢[fengliucaizi0599@yahoo.cn]
作者: 25495917    时间: 2009-4-13 09:40
太好了 收下了！！！！！！！！
作者: zxr5737436    时间: 2009-4-13 10:18
弱弱的问下
用什么材料做的
作者: 飞行无极限    时间: 2009-4-14 12:08
回楼上：KT板
作者: wuya0082    时间: 2009-4-14 15:57
请问LZ使用几mm的KT板做的？发动机仓那里使用的什么材料？能否上些详细图片。谢谢。
作者: 27号    时间: 2009-4-15 10:35
看上去不错~~我也准备做1个~呵呵~
作者: flowerains    时间: 2009-4-15 13:08
设计图上是6mm的板子，我是5mm的，全鸡都是kt做的，尾翼下部是三片kt夹在一起的，我是用热熔胶粘的，好了，基本上全部介绍玩了
作者: luhaoxi    时间: 2009-4-15 13:39
早就想做了``就是找不到适合的动力`
作者: wuya0082    时间: 2009-4-15 17:16
谢谢楼主。不懂再来请教
作者: yanbaguan    时间: 2009-4-20 16:51
请问，楼主的QQ是好多啊？不懂的问题请教下，我的是26793641
作者: yanbaguan    时间: 2009-4-20 17:01
不懂英文，后悔当初上课没有认真学习
作者: qhpqaz    时间: 2009-4-21 22:05
貌似你住春晖家园吧，帮楼主贴图纸

[ 本帖最后由 qhpqaz 于 2009-4-21 22:12 编辑 ]
作者: joe928    时间: 2009-4-21 23:48
:em26: :em26: :em26:
作者: 我的2007    时间: 2009-4-22 00:17
:em15: 好玩
作者: yanbaguan    时间: 2009-4-22 12:01
有没有喷绘板的啊？这个飞机叫什么名字啊
作者: yanbaguan    时间: 2009-4-27 20:50
请教下，楼主如何防水处理
作者: netcat    时间: 2009-5-4 08:42
莫没翼型的啊？？？
作者: yanbaguan    时间: 2009-5-4 15:47
今天做了一个，一下就栽了，可能太重了，有600多克了。主要是热熔胶用太多了，重。重新在来
作者: yanbaguan    时间: 2009-5-9 20:05
我做了一个，加上11.1V1300毫安　15C电池总共600克重了，飞机头太轻了，不好飞。
作者: BBG    时间: 2009-5-17 22:39
请问2212KV1400能飞这个么？用什么浆？
作者: flowerains    时间: 2009-5-18 12:47
可以，用7060桨11.1v电池
作者: flowerains    时间: 2009-5-18 12:49
老大你做的太重了，600g，天哪，我的才370g也全部是热熔胶粘的，重新做吧，不要超过500g
作者: yanbaguan    时间: 2009-5-20 11:38
看样子还要减肥到400克。
作者: xsen    时间: 2009-5-30 18:22
这么轻啊！
楼主坐机机的时候，KT板上原来两面的纸质表皮揭了吗？？
作者: yanbaguan    时间: 2009-5-31 09:07
撕了KT就没强度了
作者: zkw203    时间: 2009-6-6 23:34
这个软天线我喜欢
作者: fuuuudl    时间: 2009-6-7 19:39
标题: 这个水机用2212-1000kv+9050的浆可以吗？
这个水机用2212-1000kv+9050的浆可以吗？
作者: lfjqq    时间: 2009-6-8 10:32
用9050桨飞机结构就要做更改了，原图纸只能用6寸桨，我用的是2212  1400KV  7060桨  2200mah  20C电，感觉还不是很爆，最好还是用2600KV的，配小桨才刺激。
作者: 山寨机    时间: 2009-6-9 12:36
你好
能发一份图纸给我吗？
邮箱shenqizhanche@163.com
谢谢
作者: 880622    时间: 2009-6-14 23:41
提示: 作者被禁止或删除 内容自动屏蔽
作者: 会飞的四不像    时间: 2009-6-28 20:51
防水问题如何解决
作者: wh642835430    时间: 2009-6-28 21:25
留个脚印收藏了
作者: wxplt    时间: 2009-7-1 22:12
好贴，谢谢LZ分享！
作者: wxplt    时间: 2009-7-1 23:03
用704硅胶做防水，将电调和接收机的缝隙硅胶填上就好了。
作者: 牛气冲天    时间: 2009-7-7 12:17
发个图纸给我吧，谢谢
作者: 牛气冲天    时间: 2009-7-7 12:18
abcd2997711@sina。com
作者: 只上九霄    时间: 2009-7-21 10:11
LZ：你这个机机电调安装在哪个位置？设备舱的防水如何解决？水平尾翼那根拉杆和舵机连接后好像没法安装机翼，麻烦你能交流一下吗？:em00:
作者: smo    时间: 2009-8-25 16:43
试飞后仔细图装 :em26:
作者: kulewei    时间: 2009-8-25 19:47
好贴
作者: N8    时间: 2009-8-27 04:36
好贴，谢谢分享！
作者: qing33    时间: 2009-9-25 00:40
不错不错，正在制作中~~~~~
作者: 小手乱摸    时间: 2009-9-25 09:54
:em26:
作者: 想想    时间: 2010-1-20 15:37
真的不错！
作者: zhyopi    时间: 2010-1-22 13:12
你好LZ：能不能也给我发份图纸啊，先在这里谢谢了！
作者: zhyopi    时间: 2010-1-22 14:46
原帖由 flowerains 于 2009-4-12 15:46 发表
兄弟，看帖太不仔细了，要打pp哦，我在帖子里已经发了图纸和制作网站，仔细看看

你好，LZ：我看了这个制作网站，里面的图纸没尺寸啊！这个图纸是A0还是A1的？请楼主答复，谢谢！
作者: flowerains    时间: 2010-1-22 19:24
标题: 回复 60楼 zhyopi 的帖子
Wing area: 343 sq in
Span: 29.0"
Length: 38.4"
Weight RTF: 20 oz
Wing loading: 8.4 oz/sq ft
Motor: Grayson 2212-06
Battery: Thunder Power 2100 mAh 11.1V Prolite
Prop: APC 6x4
Current: 22 amps
Watts: 240 watts
Power loading: 190 watts/lb
Speed control: Grayson 30 amp
Receiver: Berg 7P
Flight controls: Elevator, ailerons, rudder
作者: flowerains    时间: 2010-1-22 19:32
我用的图纸就是我在网上发布的地址下 载的，图纸大小是121.9cm*91.43cm，其实你不用管，直接拿到打印的地方1：1出图就可以了，如果你要自己切图，按照上面的尺寸核一下，翼展29英寸，机长38.4英寸
作者: wxndmyt88    时间: 2010-1-23 00:32
马鞍山几个魔友怎么联系啊？？？？？？？？
作者: 三栖模迷    时间: 2010-1-23 16:43
水平尾翼可省略，采用飞翼的控制方式。
作者: 南瓜大校_2010    时间: 2010-1-24 10:22
标题: 回复 板凳 风飞 的帖子
玩模型的一大乐趣就是自己动手哈
作者: gzfish    时间: 2010-1-24 16:42
标题: 整机防水涂料
:em04: 我看见外国人是用涂料做整机的防水的,用的是什么东西呢?
作者: 哈尔滨的雪    时间: 2010-1-28 09:19
哈哈，可以等比例放大:em26:



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