View Full Version : Whats the difference between a heli and plank turbine?
Laurens
09-10-2006, 06:42 AM
I was wondering what makes a heli turbine a heli turbine? I'm considering to try build a gasturbine engine, but I need more info first :mrgreen:
Heli_jack
09-10-2006, 06:55 AM
The heli turbine has a drive system of some sort. The actual turbine is a turbine is a turbine is a turbine.
Laurens
09-10-2006, 07:00 AM
ok so all I have to do is to connect the bearing shaft or something to a gearbox?
chopper jockey
09-10-2006, 07:44 AM
there are two types of turbine. The plank type are designed for thrust and squash the exhaust gases into a "jet" stream and is therefore more refered to as a jet . The other type of turbine is a "gas generator", this is designed in such a way that the exhaust gases are slowed down and allowed to expand, thus rotating a second stage wheel connected to a gearbox, this is better know as a two stage gas turbine. There are also hybrids out there which attach a belt or gear system to the compressor wheel of a jet , these are better known as single stage jet turbines, the main difference with these is the exhaust gases are not compressed into a stream, but allowed to "escape" :) they all have their own advantages and dis advantages
BarracudaHockey
09-10-2006, 08:42 AM
They have turbo prop engines now for planks that swing a prop now too, Quique uses on in his Yak, Greg Alderman is building one with a Wren turbine.
But yes they all work the same, Suck Squeeze Bang Blow
BarracudaHockey
09-10-2006, 08:49 AM
http://www.troybuiltmodels.com/Video.htm
Scroll down to Quique Turboprop
Laurens
09-10-2006, 11:38 AM
BORING :wink:
I don't like turbine's for 3D planks. If I would get a turbine I'll either get a heli or some scale plank.
If you are wanting to build a turbine engine we have two alternatives for you. For the homebuilder who has a workshop with lathe, milling machine etc. it is possible to buy the plans for our MW54 Mk 1 and build either a thrust (jet) engine or a gas-generator (heli first stage) engine. If you don't have a home workshop it is possible to buy the MW54 Mk 3 kit as either a thrust engine or a gas-generator.
Sara Parish
Wren Turbines
Heli_jack
09-11-2006, 07:52 AM
Wow, That is cool Sara, wish I had a milling machine.
Drake
09-12-2006, 08:43 AM
Sara roughly how much do the plans go for?
18 GB Pounds including shipping worldwide - that's about 30 USD.
Sara Parish
Wren Turbines
Laurens
09-12-2006, 11:01 AM
How does the gearbox work? Is it basically 2 helical cut gears? I might be able to make this myself too.
Drake
09-12-2006, 02:14 PM
Thanks Sara
Drake
Yes, the gearbox is basically two gears, and before we made the production version a number of customers did their own.
Sara Parish
Wren Turbines