looking for compact turbofan engine for homebuilt plane, w/ thrust between 150 & 300 lbs, any suggestion ??

Answer 1

Can't think of any turbo-fan...but in turbo-jet there is the Solar Turbine..originally used as an APU source.
There are also several aircraft APU's that are in that catagory.
I have heard of a homebuilder who used a Allison C-18 (normally powering the 'A' model Jetaranger helicopter) in pure thrust mode.
There is also the french TRS-114 originally used on the BD-5J.

Also Williams made a small turbojet WR24-6 with 115lbs thrust
http://www.everettaero.com/williams.html

Noel Penny 100 series as well....180 lbs thrust
http://www.everettaero.com/npenny.html

Hope this helps!

With respect to DogZ ...yes.they do burn thru a heap of fuel. But it isn't always as it appears.
For instance...a Allison C-18 will burn about 21-22 US gal/hr and output about 317 Shp. However unlike a recip of the same power, the turbine will maintain it's rated Shp to a much higher altitude where the payoff comes in SFC..specific fuel consumption due to the increased efficency with dereased OAT as well as the payoff of Indicated Airspeed vs True Airspeed.
As well the C-18 can burn anything from perfume, turpentine, varsol to stove oil!....$$
And not to forget..a properly cared for C-18 will easily make 4500-5500 hrs between overhauls.

I agree...something like a Quickie with an O-200 will scream along at 150kts.....but it'll carry you, a pencil case, and about 2hrs fuel.
So all depends on the mission.
Check out what Comp-Aire is doing with their Turbine conversion.
Cheers and good building!

Answer 2

there are none for less than $5,000. and they eat tons of fuel. about 7 times a comparible prop or ducted fan would use.
The reno airshow has a class of plane called formula 1, which can go 250mph with a 100hp O200 engine. thats only 5 gallons an hour. The smallest jet airplane ever, at 700lbs, eats 35 gallons an hour at 300mph

Im going to start a plane in the next few months and use a 60hp jabiru hooked to a ducted fan. it should give from 200 to 300 lbs of thrust.
You can get one from a ducted fan powered boat.
I am a pilot, and I advise you to use parts that have been tested on existing ultralight experimental. its only a few hundred bucks for plans for solid wings and fuselage.
Just put a ducted fan on instead of a prop. If you make it past the body and wings, attaching a ducted fan will be simple.

Answer 3

Williams makes aircraft engines of this size. They probably have a web site where you could get more details.