Garry Morgan

An AD for sport star for fuse cracking if you havent seen it . and at least two in Australia?

Cheyenne is all but finished, GFA is about to come and do the final inspection manuals are complete, ( RAA paper work is easy ) It has been designed to be a glider unlike many touring motor gliders are an ext ion of a power aircraft. I have the motor for the single seat 18m to finish off the fuse design, the foam core material will be in Aust in a couple of months. S glass is now the final decision for spar material, I believe this will be the first glass plan kit performance sail plane for maybe 30 years, and the bonus self launch is a big plus.

Small no, it is a major factor, only tested to 3.2G and clam 4 G limit?? the fuse in now cracking on a few in Aust. Many of the imports don't use aircraft bolts, and I have seen cap screws beening used. An aircraft bolts apart from the quality, they only have thread for the washer and nut in safty, other bolts have long threads which bear on the structor , wernt we taught that was a no no as the thread can damage the parts they sit on? and cap screws are to hard for aircraft, and have seen many of these brake, I just refuse to use any thing but quality hard ware if I am flying in it. Many imported aircraft just are not built to our structural standards, but they look nice there is no question about that.???

The new Cougar has 100mm higher U/C to swing 1.8m props and a larger nose leg for heaver motors like the Lycoming. which requires a step on the side of the fuse. Many of the cosmetics have been improved as you will see on the Cheyenne motor glider. We are looking to do a longer canopy, moving the rear back to get better entry to the rear seats. The design doesn't need any changes as it was 100% all round on its first flight. People that fly in it say they wouldn't believe how good it fly s if they hadn't seen it for them selves.We need to move our demo Cougar to make a new one this winter so we dropped the price to 55k

Kit no. 51 has just been sold in the Cheetah /Sierra range about 25 are flying. Mostly using jab motors using our install no one has had problems, to many people knock a good motor. One guy has fitted a D motor and is not happy with it so far, the UL motor is still an UL known, The new Cougar will have a Lyc.233 fitted , we also have just installed a Viking motor to a Cougar but it wont be run for a couple of months yet.

The Cougar has about 100 hrs TT I am lowering the price to 55k to make way for a new one for the winter. You have to fly it to believe what it can do .

Just stick with the kit one as I cant remember the last time I used my trim. once its set you wont use it ?

Hi every one I havent been on line for a while so about timeI gave you an update on what is going on, I have made a new tail and cut out some metal out of the rudder to lighten the rear end. Each tail half was 6.5kg it is now 2.5 kg The rotax motor I was going to use is 25kg heavier, so it will need a little weight in the nose. these are being painted and early next week we will do another weight and balance. Some instrument changes. and the paper work, GFA ( Dennis Stacey) will come and look at the aircraft soon. As for the single seater design, is now very close to to a final shape and size. The 13m is out, 15m class is also going to 18m and open class is coming down to 18m. The design is 18m 4 piece wing self launch ( I have just received my 28hp Hirth motor at 17kg) Should have the performance between a Ventus and an SAG 29. no moulds, and now no carbon, the spar will be made of S glass. The foam sandwich core is on order. It will have a retractable main and nose wheel, the nose wheel will be steerable. Trim drag of the tail at all speeds has been solved with an all flying tail, many of the early gliders where not set up right and got a bad name, but trim drag is an area I have spend a lot of time on. Airfoil is a T 12 They are all much the same for there age, like race cars the all look the same for there age. A trend now for the fuse is not to tapper it to fast the Duckhawk and Ventusis a good example.After about a year I realised it is not all German rocket science as many say, most of the best gliders now are not from Germany like the JS!, Duck hawk etc. The big thing is all these gliders are very expencieve and made in hi teck moulds, and no one has plans for a hi performance glider it all stopped when glass came along about 35 years ago. So even if it doesent perform quite as good as I expect, I Hope it will get some glider pilots into the air at an affordable cost.A plan built one will be under 15K the cost now to buy a import 18m self launch is about 250-300 k. I am sure I am going to upset so more people with this, one agents reaction so far was a BIG NO. NO. when I mentioned the cost to build, I got into a little trouble when I got caught measuring a glider, ha ha got my measurements. Safe flying. The Morgan 10 ,is that the Cheyeene is the tenth aircraft I have now designed and built if you where wondering what it meant .

7634 is now sold. sorry

I have just spent two weeks in Omarama new Zealand one of the best wave sites in the world, and a wide range of gliders to measure up. ash 25 self launch ( which i got a 4 hr ride in)to an asg 29 one of the latest designs from which i got some good info from.( some people not happy about me getting the info from it ?) If you read the latest kit planes mag. about the HP24 glider you will start to realise that it is not all rocket science people talk about. There are just a few factors that need to right and you will have a realy good performing sailplane. I also looked at another fuse plug in the hangar a guy way going to build a 15m glider and stopped work on it when he relised that 15m class is going out and 18m is the new glider. the open class is coming down and the 15m class is coming up.So my home work was right . I have a 4 peice wing easy to build. the carbon spar is now gone and S glass at 87,000 psi is now the go. At Omarama I also learned about using convergent lift which a 4 hr flight using only this and getting to 11,000' in the alps , mountain flying is a lot different from flying high above the ground in aussie. one day guys where getting 24,000'in wave but couldn't get clearance in Queenstown airspace where it was going 40,000 + .I also got some trout fishing in and lot count of how many i caugh, but Trevor and Jenny will have trout for Christmas dinner. I believe my design shape now is now almost there and still working on the motor set up to get the motor up and going quicker as many take a minute to just get it up. control set up in the cockpit is also an area to be worked on. The touring motor glider only has the fuse to be painted, which i hope to get use of the paint booth on tuesday.

We are building a new Cougar with the 100mm higher undercarriage, this makes it look like a much bigger aircraft. My new one will have the 233 Lyc. motor 6-8 hrs of fuel and will be able to carry 350kg for 4 people. the interior needs to be upgraded, full upholstery top to bottom, we have a good guy here to do the job.

After much thought on the wing skin finishing and the work needed, also the ageing shrinkage problems, and to get the constant strength in carbon fibre ( for the home builder) and the( buckling )cost which isn't to bad. A spar made of S glass, making foam ribs, just bolt a timber pattern each end and sand to shape. Make a leading edge, it is easy to bond a metal skin over it. This would save many months of sanding, which will shrink in a few months.

Yes to fly it as a 4 seat aircraft with 4 people you will need a CASA medical, but your RAA licence can be changed over, if you cant get a class two medical your wife has a lot of shopping space. As far as i know the Cougar is the only 4 seat you can de rig into a trailer.

Hi David, A glider with a retractable fold away motor , as the 18m single seat will need a GFA rego and membership Form two inspections. As for the touring motor glider which has a fixed motor up front as a normal powered aircraft can be registered RAA SAAA GFA or CASA

With the new CASA rec. licence the new Cougar will have 4 seats and 6+ hrs of fuel with the Lycoming. motor it will be 100mm higher off the ground. folding front seats at the front. It will carry 4 people and full fuel, and a quick derig into a trailer.

Hi Keff, Some clubs i here have a morning and afternoon shift so one is not at the field all day, a two seat self launch would solve this problem.My design is now a 18m 4 piece wing, one man can easly rig it with the new rigging adds for the wings. The construction for the wings which is a big job in glass will now go to bonding metal skins, foam ribs,, and a carbon spar.a fus thin shell that can be pulled in and out for the pilot size and then finish off the glass work. control systems in gliders are usally a mass of horns and bellcranks, i will make this a very simple system.A stearable nose wheel and working on making it retractable with the main wheel. an FX 79/140 airfoil is much as all the most modern ones like the DU84 . seems to be the next generation from the FX 67/ from the LS 6 and jantars. The 13.5m doesent look like it will get much interest in Australia as it does in other parts in the world, but a 40-45/1 glide will get you places, and the glide at higher speed ( 80-90kts) needs comprises . the motor at this stage will be a 28hp hirth as there is not much around that will fit. Designing a glider is a lot of work, but there is only realy about 6 aspects of the design that need to be worked on as far as shape and size. this may take another years work yet, but making it lower in building time is another task.

You have just showed that you have no idea how to cal a bending moment there is lot more to it.

Well to work out a bending moment you need to know a weight and span and a G loading. I think you have taken the total aircraft weight ( not the carrying load) as your spar caps are much to big. I have measured some spars ,but it isnt hard to work out a thickness. Your cal. need some looking into they are not correct,or your experience.

Yes 12.7% thick is the maxium ,and it is at the tip, the root is 3-4% - a 800 mm cord will be 72mm and the centre of the moment for the spar cape will about 63mm a 900mm cord will 91mm thick .Airfoil data will give a MAXIUM thickness which is not what the aircraft will be, and it changes along the wing. it is not the same from root to tip now days, it was 20 years ago but some have discovered how to improved handling with out losing performance.

Look at any modern glider 75mm for a Ventus C, a 2 seat Duo is 150mm wing, thickness are 8-10% at the root and 12% approx at the tip that is bacause they dont use washout fort the last 20 years.

In getting performance some handling in modern gliders is lacking a bit as they only make the control surface just big enough the rudder mainly, The Alpin is very bad we have. The Jantar 3 was a big improvement, The motor will fold back into the fuse, many people dont like it back there ,but you cannot get away from it. The one man rigging systems out now are very good to rig out of a trailor, over seas at a comp. they rig and de rig every day as in asiie we just tie them down for the week. Building wings with out moulds is very easy the foam core 5mm 60kg sq m glass the inside surface as it will still bend and bond it over the wing. It can be sanded with a long strigth edge to the keep profile .lay the top layers of glass use a long strigth edge to squige the resin in and the same with the filler and a sanding board which you can bolt to a sander. There should not be much filler. the faom is hard and flat. the problem with the filler over time if shrinks at different rates with thickness. The skin is super strong and stiff, the gliders dont use ribs, but you see people sitting on the wings. (dont do it )

It will be a bit slower (10kts) and motors around 80- 100 hp most motors will fit or you make them fit. also if you know any one wanting a good cheap motor i have a 80hp Rotax but it will be sold with all the extras needed to get it complete for an airframe. The tapered wing ribs can be purchased from us .

Not sure what you mean Paul (lightwing) Wing loading will be about 32-47 kg sq m and one of the cleanest lies around. Just the tail and fin I can save about 1.8 sq m from a Jantar to a more modern design. I have a fuse mold from my last glider which I can modify. it will use a steel fram for the U/C motor wing and carry it rear of the prop doors to keep all strength .It will use the cockpit air extractor to spot canopy leaks from braking up the boundry layer, and a tubo in the wings.

Off to the paint shop next week, panel to be wired in ,and then ready for the paper work with GFA.

I have spend some time looking at a design for a self launch from two seat single and options. I have now decided on a single seat 18-22m 4 piece wing all glass and with no moulds, one cannot get away from carbon for spars with such high bending moments with a 80mm thick wing. a self launch 28hp motor L/D 45+ . Still refining things, its not like designing a power aircraft and will probably take another 12 months. cost of the build under 20k.