"im going for a similar idea but with less of a payload, only around 15-20kg. ill be using 4 400mm EDF's powered from a micro turbine/generator set. for something like yours i would also go with ducted fans if you want VTOL capabilities but if…"
Lupoi Alexandru's Discussions
Engine needed!
Started this discussion. Last reply by Ian Painter Oct 1, 2011. 1 Reply 0 Likes
Need assistence for a plane
Started this discussion. Last reply by Lupoi Alexandru Jul 16, 2009. 14 Replies 0 Likes
Lupoi Alexandru's Page
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Lupoi Alexandru posted a discussionEngine needed!
Hi! I'm looking to build a UAV with a payload of around 100 kg of water. I'm guessing I'll need an engine of around 35-50 bhp. Got any ideas about the engine? Also, should I use a puller or a pusher prop? My engine budget is somewhere around 1000 USD :( ThanksSee More
Lupoi Alexandru replied to Lupoi Alexandru's discussion Need assistence for a plane"I'm going to start by building one of the geocrawlers and then move from there. Thanks a lot for all the help, admittedly I have to get more specs first. Sorry for the trouble"
Nick Sargeant replied to Lupoi Alexandru's discussion Need assistence for a plane"Good luck with that. This kind of performance is beyond the scope of hobbyists."
Wendi Smol replied to Lupoi Alexandru's discussion Need assistence for a plane"Hi Lupoi
with this piece meal info we will not get anywhere. If you really want any assistance here you have to make up your mind what you want to do!
The following criteria must be defined by you to even start having a look whether you went over…"
Earl replied to Lupoi Alexandru's discussion Need assistence for a plane"RC groups had a LOT of info. I am drawn to the home built 'foamies'. 3-4' and cost next to nothing to build in time and money. But, 3-4 hours flying time, it must be a big glider with thermal capabilities. But then, you are at the…"
ModeratorGary Mortimer replied to Lupoi Alexandru's discussion Need assistence for a plane
"An idea, find a real aircraft with those performance figures and start thinking about it from there.
I think your asking a bit much! Try starting with 1 hour at 60kmh"
Lupoi Alexandru replied to Lupoi Alexandru's discussion Need assistence for a plane"Ok, so I did some research, and realized that a more real estimate would be around 1120 km/h speed, 2.25 m length, around 2.5-2.7 m wingspan, an endurance of around 3-4 hours."
Lupoi Alexandru replied to Lupoi Alexandru's discussion Need assistence for a plane"surveilance only. How big should the frame be? I was thinking 200 km/h top speed , 115 km/h cruise speed."
Mike Bakula replied to Lupoi Alexandru's discussion Need assistence for a plane"3 hours endurance at 200 km/h (about 125 mph) in a 3.5 m airframe? I'm not sure it's even possible to do that with a gas engine -- there certainly aren't any battery technologies available with that kind of energy density.
Before we…"
Lupoi Alexandru replied to Lupoi Alexandru's discussion Need assistence for a plane"I want to build an airframe, length 3.5 meters tops, electrically powered. As for the speed, I need something around 200 km/h max speed. I have a company that will give me an electric engine, all Ihave to do is say the rpv I want. Also, I have a…"
Mike Bakula replied to Lupoi Alexandru's discussion Need assistence for a plane"If you want to focus on systems, you shouldn't spend time designing an airplane. I still don't have a good idea of what mission you want to perform, but of the fixed-wing platforms we've used here at ERAU, I've found the Senior…"
Xander replied to Lupoi Alexandru's discussion Need assistence for a plane"3 hours is asking... a lot. 45 min is considered an impressive flight time with the sorts of planes frequently used here. Dont think I've seen any that go for more than maybe an hour, unless you're actually looking at partial solar power…"
Ryan replied to Lupoi Alexandru's discussion Need assistence for a plane"Start by putting down some spec. of what you want, ie speed, weight, endurance, type of engine, type of payload, how high, how fast, how slow..."
Lupoi Alexandru replied to Lupoi Alexandru's discussion Need assistence for a plane"Thanks for the answers. My e-mail adress is alexlupoi@yahoo.com. I study Mechatronics so, I'm mostly interested in the "insides" of the plane, the machinery and the systems, that's why I don't really know how to make a…"
Mike Bakula replied to Lupoi Alexandru's discussion Need assistence for a plane"Why do you want to build a UAV for college? This may seem like a naive question, but it is actually the key question that drives a UAV design. If you are interested in platform (aircraft) development, you need specific goals (weight, range, speed,…"
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Comment Wall (1 comment)
- At 11:59am on July 13, 2009, Wendi Smol said…
- Hi, for meaningful answers you need to specifiy your plane a bit more: what drive - IC-engine or electric; what sort and weight of payload; how fast etc.
And please forget not to give your e-mail address if you want to get answers that way.
Have fun
W.
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