LoneStar Kit Helicopter Specifications (late version)
The Lonestar experimental kit helicopter was originally designed and developed in the early 1990’s before going through a number of layout changes. After the original prototype, there were three production versions – each improving on the one before.
It was a real sleeper and though it won many awards at major airshow displays around the country, the LoneStar Kit Helicopter gained little publicity.
This desirable little helicopter has all the features that todays homebuilt helicopter experimenter wants.
Compact single seat size
Light weight aluminium
Simple bolt together construction
Very low cost materials
Simple low maintenance design
Easy to manufacture parts*
No specialised airframe parts
Simplified maintenance inspection
The evolution of the Rotax aircraft engine range made it possible to build a small lightweight aircraft and the LoneStar helicopter is one of them. Though the LoneStar kit helicopter started out with the Rotax 582 – it wasn’t long before it moved to a higher horse power two stroke engine – the Hirth F-30 engine.
Redback Aviation purchased the Australian marketing rights and promotional material prior to the companies demise.
We have the only known remaining machinist and perspective drawings as received direct from designer and company owner, Ken Rehler before his unfortunate passing some years ago.
These ARE NOT the complete drawings – but enough information to build the swash plate (this part is complete) and some other components.
Major changes from the original prototype included moving from an all steel welded aircraft grade 4130 chromoly airframe with tricycle style landing gear to a bolt-together aircraft grade 6061 all aluminum airframe with typical helicopter skid style landing gear.
Other refinements the the LoneStar helicopter kit were with the combined belt and chain drive along with the innovative through shaft cyclic swash plate control system – thought to be the catalyst of the current Mosquito kit helicopters swash plate control system.
It’s through shaft cyclic swash plate control system while resembling the current Mosquito Ultralight Kit Helicopter (Mosquito AIR and XE Ultralight Helicopter), was developed long before it.
The benefits of this kind of through shaft swash plate control system for the rotorblade’s directional control can be seen in the inherent stability of similar designs such as the commercial Enstrom helicopters, the Angel CH7 Kit Helicopter and the previously mentioned Mosquito ultralight helicopters. The components also remain protected inside the shaft avoiding any damage or contamination from the elements.
Other kit helicopters (such as the Mini 500), and commercial helicopters (such as Enstrom), also employ similar through shaft designs.
The idea is by no means a new one, though its individual technical advancements certainly is.
The Lonestar factory was completely lost during floods in the mid 1990’s and thus a magnificent little design that was well ahead of its time never had a chance to fully evolve. It can only be imagined where the LoneStar might be today should it have had its chance in aviation life?
VIDEO: LoneStar Helicopter Flight Video – © Copyright protected
Check out the YouTube flight video which runs for approximately 10 minutes showing the Lonestar in full flight and performing various standard manoeuvres. Note the short tail boom does not seem to have any negative effects on flight performance. Please note that the model shown flying was the first production model of the three main layout configurations that the Lonestar evolved through. The picture at the top of the page was its final form including all mods and updates. The manuals and drawings for both of these designs are included in the complete pack.
Buy LoneStar Helicopter Plans Online Today
By now, everyone should know of the Aeros helicopter plans, Furia – CH6 – SkyLark helicopter plans, the Mini 1 weight-shift helicopter, and the range of Adams Wilson plans – The “Flying Triumph” AKA Choppy, the AW95 and the SkyTwister helicopters. These have been the only homemade helicopter plans available on the market – till now!
The Aeros plans were never viable in that they were generally “incomplete” and required a foundry to cast aluminum casings etc… Should this design have been further developed as was the Adams Wilson helicopter, there might be more flying today!
The Mini – 1 “weight shift” helicopter (even with the addition of a swashplate, it looks a little too simple) – I would not consider this a serious contender in this discussion, weight shift! enough said…
The Furia, well, a marvel of engineering genius – that’s if you are an engineer with access to high tech machining equipment. Otherwise, no more than an interesting read.
The Adams Wilson helicopter spin offs, AW95, SkyTwister etc… About the only viable homebuilt helicopter plans available, and quite near “complete” – or close enough to “work out” the missing information. There are also many forums discussing this design, people offering advanced drawing or pre-made parts, and MANY flying around the world.
This now only leaves the LoneStar! Like the Adams Wilson design, it is of bolt-together construction and of similar simple design. No complex gearboxes are used, simple belt and pulley drive systems, readily available raw materials, and of interesting layout. It has a through shaft control system, known for it’s improved stability.
Very similar in design the Mosquito Air helicopter (which came after the LoneStar helicopter), and with various engine options. The tail boom that remains within the main rotor disk, and works due to clearance between the rotors and the more stable swash system. A chopper ahead of it’s time, to a degree “under developed” – but still viable in it’s original format, or available for your own interpretation of upgrade.
Parts are relatively standard to manufacture – as with the AW95 helicopter. Most of the helicopter has been presented in plans and drawings. Missing are the two main members made of aluminum channel, that support the upper and lower ends of the vertical drive shafts. Most of the other parts and dimensions are given.
Get your downloadable eBook today! Plans for the entire tail rotor head, main control swashplate, elastomeric main rotor head, main rotor shaft and more….
The LoneStar helicopter kit was perfect for heli-mustering, it exhibited many suitable qualities. The tail boom resided within the main rotor disk reducing the risk of tail rotor strike instances in low flying bush mustering conditions. Being responsive and manoeuvrable in tight places is a necessity when mustering livestock in the bush.
Having a short tail boom did make the little chopper some what “twitchy” in hover though not much different to an Robinson R22. The downwash did not interfere with the anti torque tail rotor as you would think it could. And once into any lateral flight (eg. forward flight), it was a stable as any other small chopper. The through shaft controls also added to the helicopters surprising stability considering its size and tail boom length.
It’s Hirth F-30 four cylinder two stroke engine offered plenty of reserve power and reliable cooling through the forced air fan system. The composite blades were fitted with erosion protection tape on the leading edge which also protected them from the many bugs found in the warm Australian conditions.
Mechanically the helicopter was tough and easy to maintain. The red dust seemed to build up quick but did little to impair operation. While I encouraged the replacing of the final rotor drive chain system with one of the many poly-chain belt options, in outback conditions, any grit that found its was to the belt cog drive could cause the belt to fail. In this situation, the chain did its job perfectly and was a relatively cheap 100 hour (or “ON CONDITION” item). Just like a motorcycle chain, it handled contamination with ease and not affect to operation of the drive system.
The pilot wore a helmet fitted with communications which offered both added safety and noise reduction when communicating via radio. Being cabinless, there was little in the way of sun protection but could be argued that there was plenty of natural air flow for cooling the pilot.
The little LoneStar kit helicopter served well till a change in livestock management and farming procedures terminated its service. It proved robust in the limited time of service and fortunately, never experienced any emergency situation or component failure.
|SPECIFICATIONS – (Lonestar kit helicopter dimensions -late version)|
|Helicopter Engine||Rotax 582 UL||Hirth 2706-2C2||Rotax 618 UL||Hirth F-30-EP2|
|Cooling System||Liquid cooled||Forced air cooled (fan)||Liquid cooled||Forced air cooled (2 fans)|
|Power||64 hp||46 kw||65 hp||47kw||74 hp||55 kw||94 hp||69 kw|
|Gross weight||680 lbs||310 kg||680 lbs||310 kg||760 lbs||345 kg||920 lbs||415 kg|
|Empty weight||420 lbs||190 kg||390 lbs||180 kg||430 lbs||195 kg||470 lbs||210 kg|
|Useful load (pilot & fuel)||260 lbs||120 kg||290 lbs||130 kg||330 lbs||150 kg||450 lbs||205 kg|
|Fuel capacity (seat tank)||8.3 gal||31.5 lt||8.3 gal||31.5 lt||8.3 gal||31.5 lt||8.3 gal||31.5 lt|
|Fuel weight (seat tank)||51 lbs||23 kg||51 lbs||2 3kg||51 lbs||23 kg||51 lbs||23 kg|
|Fuel consumption at cruise||4.8 gal/hr||18.2 lt/hr||4.8 gal/hr||18.2 lt/hr||5.1 gal/hr||19.3 lt/hr||5.6 gal/hr||21.2 lt/hr|
|Rate of climb||600 ft/min||180 m/min||600 ft/min||180 m/min||700 ft/min||215 m/min||1000 ft/min||305 m/min|
|Service ceiling||9000 ft||2740 m||9000 ft||2740 m||9200 ft||2805 m||9500 ft||2895 m|
|Hover in ground effect (HIGE)||5500 ft||1675 m||5500 ft||1675 m||5700 ft||1735 m||6000 ft||1830 m|
|Hover out of ground effect (HOGE)||4500 ft||1370 m||4500 ft||1370 m||4700 ft||1430 m||5000 ft||1525 m|
|Range at cruise||105 miles||170 kms||105 miles||170 kms||100 miles||160 kms||95 miles||150 kms|
|Flight duration||1.7 hrs||1.7 hrs||1.6 hrs||1.5 hrs|
|Range at cruise with auxiliary tanks||235 miles||375 kms||235 miles||375 kms||225 miles||360 kms||215 miles||345 kms|
|Flight duration with auxiliary tanks||3.9 hrs||3.9 hrs||3.7 hrs||3.4 hrs|
|Minimum airspeed||0 mph||0 km/ph||0 mph||0 km/h||0 mph||0 km/h||0 mph||0 km/h|
|Cruise airspeed||60 mph||96 km/h||60 mph||96 km/h||62 mph||100 km/h||65 mph||104 km/h|
|Maximum airspeed||85 mph||135 km/h||85 mph||135 km/h||88 mph||140 km/h||95 mph||150 km/h|
|Velocity limit (VNE)||100 mph||160 km/h||100 mph||160 km/h||100 mph||160 km/h||100 mph||160 km/h|
|Take off – landing distance||0 ft||0 m||0 ft||0 m||0 ft||0 m||0 ft||0 m|
|Construction time||160 hrs||160 hrs||160 hrs||160 hrs||160 hrs||160 hrs||160 hrs||160 hrs|
|DIMENSIONS – (Lonestar kit helicopter dimensions -late version)|
|Main rotor diameter||20.0 feet||6.10 meters|
|Tail rotor diameter||3 feet 6 inches||1.07 meters|
|Length – nose of skid to tail||13.5 feet||4.09 meters|
|Width – at skids||5.0 feet||1.52 meters|
|Height – overall||7 feet 4 inches||2.23 meters|
|Height – overall for garage storage||6 feet 9 inches||2.05 meters|
NOTES ON THE LONESTAR KIT HELICOPTER DESIGN:
▣ Design performance calculations were based on a standard 70 degree F / 21 degree C day at sea level with an average 170 lb pilot weight plus approximately 30 lbs of fuel.
▣ Gross weight specified is the maximum allowable weight limit. Reduced total weight (pilot/fuel/aircraft) will result in improved helicopter flight performance.
▣ Auxiliary fuel tanks are two 5.25 gallon (20 liters) side tanks providing a total of 10.5 gallons (40 liters) or 65 pounds/30 kilograms of additional fuel.
▣ Only the Rotax 582 and Hirth F-30 engines were tested by the manufacturer in the LoneStar kit helicopter.
▣ The Hirth F-30 engine (110 HP at 6200 rpm) has 94 HP at 5600 rpm. Reduced rpm on two stroke engines contributes to increased reliability with less wear.
▣ Construction time quoted was for the aircraft kit only, not including painting, instruments, engine and rotor blade track and balancing procedures.
▣ The above specifications relate to the then current Lonestar kit helicopter.
▣ Due to later product improvement including some mast support changes, these specifications and dimensions may change from model to model.
PLEASE NOTE: Star Aviation is no longer in existence and the LoneStar kit helicopters are no longer produced. Mr Ken Rehler passed away recently so this is the only known remaining source of information licenced to be advertised and distributed to the public. All property is copyright protected.
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