nagas's blog View Details
Posted by nagas | Yesterday @ 08:11 AM | 8,177 Views
Here is a new video of Charles Ritchel's Flying Machine which he built in 1876.

You can download the model here.

Charles Ritchel's Flying Machine - 1876 (1 min 1 sec)

Posted by nagas | Oct 16, 2021 @ 11:04 AM | 23,256 Views
I am in the mood for making videos!

Here is a new video for the Blue Thunder model that you can download here.

Blue Thunder On Patrol (1 min 19 sec)

Posted by nagas | Oct 05, 2021 @ 07:30 AM | 11,813 Views
A new flight video for Leonardo da Vinci's Air Screw for Phoenix Sim.

Leonardo Air Screw for Phoenix Flight Simulator (1 min 15 sec)

Leonardo is credited with inventing the helicopter with his Air Screw. In fairness he was probably influenced by the Chinese Top.

The idea was a bunch of guys would stand on the platform and running round the mast, turn the capstan thus providing power to the screw so generating lift.

The original Sketchup model was created by alfebilbao and took quite a lot of modification to get it into Phoenix Builder.

The Phoenix model can be downloaded here.
Posted by nagas | Oct 04, 2021 @ 10:26 AM | 12,379 Views
Piasecki H 21 Banana (2 min 16 sec)

You can download the model here

The Piasecki H-21 Workhorse/Shawnee is an American helicopter, the fourth of a line of tandem rotor helicopters designed and built by Piasecki Helicopter (later Boeing Vertol). It was a multi-mission helicopter and first flew in 1952.

The H-21 was nicknamed the "flying banana" because of the upward angle of the aft fuselage which ensured that the large rotors could not strike the fuselage in any flight attitude.

The H-21 uses two tandem, three-bladed counter-rotating rotors, and was powered by a nine-cylinder Curtis-Wright R-1820-103 Cyclone 1,150 hp air-cooled radial engine.

In 1959 Piasecki Helicopters came up with a concept for heavy lift over short distances where between two and six H-21Bs would be linked by beams to lift heavy loads. It was considered to be unsafe and never implemented. Presumably that is what the channel in the aft of the fuselage was intended for.

Phoenix Model:

RickP made a beautiful Blender model and gave me the pleasure of getting it flying in Phoenix.
Posted by nagas | Oct 02, 2021 @ 03:29 PM | 12,171 Views
Vought Sikorsky VS-300 Experimental Prototype Helicopter (1939) (1 min 2 sec)

You can download the model here

Igor Ivanovich Sikorsky, the Father of Modern Helicopters was born in Kiev, Russia in 1889.

In 1931 he filed a Patent for a direct lift aircraft which was awarded in 1935 and as the Engineering Manager of the Vought-Sikorsky Division of UAC in 1938 he started to develop his dream, the VS-300 experimental helicopter. The first untethered flight was demonstrated in 1940 as shown in the video.

The VS-300 was fitted with a Lycoming O-145-C, horizontally opposed four cylinder, 75 hp air cooled engine. It had a three-blade main rotor and a vertical antitorque tail rotor. The tail rotors (at one stage three) were driven by a shaft along the tail boom and a complex system of gears, belts and pulleys.

This configuration of a single main rotor with collective and cyclic control and a shaft driven vertical tail rotor is found today in most modern helicopters.

The helicopter underwent a series of modifications. Initially cyclic control of pitch and roll was ineffective so at one stage, side gantries were added at the end of the tail boom to support two lateral, horizontally orientated variable pitch rotors. By varying pitch of these rotors simultaneously, fore and aft control was provided. Roll was provided by differential pitching of the blades. Sikorsky found that in this configuration the VS-300 could not fly forward easily and he joked about...Continue Reading
Posted by nagas | Sep 30, 2021 @ 04:44 AM | 16,844 Views
A new flying site for Phoenix Flight Sim.

Flight Video: Apollo LEM flown in Phoenix Flight Sim.

You can download the model here:

Apollo 11 Lunar Landing (2 min 16 sec)

LEM Model by Fort Opus:

Adapted for Phoenix by Naga.

Neil Armstrong model by Max Grueter
Posted by nagas | Sep 24, 2021 @ 11:19 AM | 15,762 Views
Pitts Sky Car "Umbrella" Ornithopter (2 min 8 sec)

We have all seen the movies of this early ornithopter pumping and bouncing as seen in the 2nd video below and had a good laugh. However, the idea was not quite as ridiculous as it may seem at first sight.

The "umbrella" was not just a simple membrane which of course would be unable to provide any lift. It was in fact an ingenious and sophisticated device that had been well thought out even if it wasn't successful.

It was composed of sixty radial slats that opened on the upstroke allowing air to pass through and closed on the downstroke trapping and forcing air down. In addition, it also spun on each stroke in an attempt to generate more lift. These movements were driven by a complex mechanism with gears and cranks to generate the spin and reciprocation. 

"Jack" John W. Pitts filed a Patent for his idea in 1924 which was granted in 1926. Pitts, in collaboration with W. P. Kindree constructed two versions, the first of which was tested in 1928. 

Apart from the Patent and newsreel movies that were made, little more is known about Pitts or his aircraft. 

The first version which is modeled here was powered by a 65 hp engine of unknown manufacture. The second version was much more robust but weighed a massive 1,200 Kg (!) and was powered by a Curtis OX-5 90 hp engine.

As It was not possible to determine the manufacture of the engine used in the first version, the Curtis ...Continue Reading
Posted by nagas | Sep 08, 2021 @ 06:43 PM | 16,268 Views
This site was made for my buddy RickP for the demo flights of his Virgin Galactic Space Ship 2, White Knight 2 and combination of both.

Here is a video of Rick flying his Virgin Galactica Space Ship 2 at the site:

Virgin Galactic SS2 Flight (0 min 59 sec)

Links to the Virgin Galactic Craft:

Space Ship 2

White Knight 2

White Knight 2 and Space Ship 2

Posted by nagas | Sep 02, 2021 @ 10:33 AM | 26,542 Views
Flying Teapot is the third studio album by the progressive rock band Gong, originally released by Virgin Records in May 1973.It was re-issued later in the year with different cover art by BYG Actuel in France and Japan.

That cover art was used as the texture for the model.

A challenge set by my buddy John although he meant a real model!

You can download the model here.

Gong's Flying Teapot (0 min 52 sec)

Posted by nagas | Aug 24, 2021 @ 08:14 AM | 16,349 Views
Asboth AH Helicopter (1 min 6 sec)

Following the work of Petróczy, Karman and Žurovec (PKZ) around the time of WWI, Hungarian engineer Oszkár von Asboth who had worked on both of the PKZ helicopters and who was a specialist in propeller design and manufacture started to develop the concept and designed and flew four different helicopter between 1928 and 1931.

As with the PKZ series, two counter rotating coaxial rotors were employed which were capable of providing sufficient lift. However, just like the PKZ aircraft, his were also inherently unstable and need to be tethered. Over 250 flights were made, some of which lasted for up to an hour. The helicopters were capable of climbing to an altitude of 30m. The problem of providing forward thrust was addressed with the addition of a forward facing propeller in later versions as with typical fixed wing aircraft.

Looking closely at the few photographs that are available, the two central, lateral panels appear to be articulated with control horns and wires attached. This may have been an attempt to deflect the main rotor down wash to one side or the other to provide some degree of control although it seems to have been ineffective. The front and rear panels were also probably similarly hinged although that is not apparent in the available pictures.

The problems of providing directional control and forward thrust were not solved until the genius Igor Sikorsky invented both collective and cyclic pitch mechanisms...Continue Reading
Posted by nagas | Aug 04, 2021 @ 08:45 AM | 34,175 Views
Lego 42092 Rescue Helicopter with upgraded Blade 130s mechanism.

Upgrades include Rakon Heli Carbon Fibre frame, 180 Trio Three-Blade Head, alloy tail boom, alloy tail motor mount and alloy tail blade fittings.

A breezy day so altitude holding was a little problematic at times hence the bumpy landing.

Lego 42092 Rescue Helicopter (0 min 55 sec)

Not much in the way of modifications need to fit the 130s inside. I cut a carbon fibre plate and after drilling holes to bolt the plate to the Lego kit I then found I could attach the 130s Rakon frame to it! Doh!

So in the end I went with hot glue. It holds well so far and if needed I can free it up with a little isopropyl.
Posted by nagas | Jun 26, 2021 @ 02:26 PM | 21,469 Views
Four launch positions are available; two for fixed wing including Parked and Catapult, one for helicopters and one for amphibious aircraft.

Original Panorama by Jurgen Schrader.

Original Flying Site for Phoenix by Ezekial/Freshman IGN

Panorama Modified and completely new Flying Site created by Naga


USS Hornet at Sea (2 min 21 sec)

Posted by nagas | Jun 18, 2021 @ 01:44 PM | 15,003 Views
A new flying site for Phoenix Flight Sim.

A grassy field with WW-1 vintage aircraft and observation balloons suitable for aircraft of the period.

In the skys, a Sopwith attacks the Bloody Red baron in his Fokker DR1 who gets it!

A Fokker DVII and Eindecker III are among my favourite aircraft....Continue Reading
Posted by nagas | Jun 09, 2021 @ 04:41 AM | 18,822 Views
Petróczy, Karman and Žurovec (PKZ)

In 1916, István Petróczy proposed an electrically driven rotorcraft to replace the dangerously flammable observation balloon. His original concept was for the onboard electric motor to be supplied by a dynamo driven by an internal combustion engine.

Video Flight demonstration

PKZ-2 WWWI helicopter for Phoenix Flight Sim. (0 min 59 sec)


The PKZ-1 was designed by Karman and Žurovec. It had four radiating arms with four-bladed propeller on top of each, geared in pairs such that each pair spun in the opposite direction just like a modern Quadcopter.

The rotors were driven from a single centrally located electric motor. A ground-based generator fed power through the tethering cables to the motor. In a short series of four test flights in March 1918 the craft was able to lift three men. The wiring insulation in the motor burned out on the fourth flight and was not repaired.


The PKZ-2 was developed by Žurovec in parallel with the PKZ-1, but wholly independently. Zurovec only acknowledged the support of Petróczy.

It had three radiating arms, each housing a rotary piston engine. These engines were coupled together to drive a central pair of contra-rotating wooden propellers mounted above the airframe. A round cockpit for the aircrew was fixed centrally, on top of the rotor mast. Landing gear consisted of rubber-fabric cushions, one large central one and three smaller ones at the end of each arm.

The...Continue Reading
Posted by nagas | Jun 06, 2021 @ 12:17 PM | 28,613 Views
The Sikorsky S-58 is a piston engine helicopter developed from the earlier S-55 as an anti-submarine warfare and general utility and transport vehicle for the US Navy. It first flew in March 1954.

It was given the military designation by the US Navy as HSS-1 Seabat in the ASW configuration, HUS-1 Seahorse in the utility configuration and H-34 Choctaw when later adopted by the US Army.

In 1956 one was sent to the UK to serve as a pattern where it was developed further by Westland Helicopters as the Westland Wessex for the British Royal Navy Fleet Air Arm and later the Royal Airforce. It was fitted with a Napier Gazelle turboshaft engine overcoming the piston engine limitations and also with an automatic pilot system and used for ASW, Utility and SAR roles. Sikorsky subsequently developed a turbine version themselves, the S-58T.

Phoenix S-58 Models

Four versions of the model are available for download:

Mercury Capsule Freedom 7 and astronaut Alan Shepard Recovery, 5th May 1961 by US Marines HSS-262 helicopter #44 with piston engine flying from the USS Lake Champlain (CV-39).

Westland Wessex Royal Navy 737 Naval Air Squadron fitted with jet turbine engine. 

US Navy Air Development Squadron VX-6 "Puckered Penguins" supporting the US Antarctic Program Operation Deep Freeze at McMurdo Station Antarctica with piston engine.

US Army Crash Reaction Aircraft.

In total, ten liveries are available for download reflecting the various roles for the S-...Continue Reading
Posted by nagas | May 30, 2021 @ 04:37 PM | 27,703 Views
Made using Lego's software by aelfyer's very smart son. It will soon be time for him to make the models for Phoenix himself!

You can download the model here:

Demonstration flight in "Lego Land" by Naga:

Lego Apache at Lego Land (0 min 59 sec)

Posted by nagas | Apr 19, 2021 @ 10:12 AM | 5,044 Views
Monday 19th April 2021 flight history was made! The first aircaft to fly off world!

Ingenuity coaxial helicopter succeded with its maiden flight after days of delay while new flight software was tested and uploaded.

Here to celebrate is Perseverance at Jesero Crater, Mars flying site for PhoenixRC Simulator.

Made from the 360 deg panorama taken by Perceverance on 20th February 2012 while it waited for Ingenuity to fulfill her destiny.


While visiting the Jesero Crater in my Occulus Quest Virtual Reality Headset (an amazing experience!) I realised that the flying site has considerable distortion with a goldfish bowl effect causing the horizon to be too high.

I have consequently rebuilt the site to make it more realistic.

I strongly suggest you download and use Jesero Crater Mars v2 instead, a more realistic rendering.

You can download my model of Ingenuity to fly at this site here.

Video of Ingenuity at Jesero Crater

Ingenuity at Jesero Crater for Phoenix Flight Sim. (1 min 10 sec)

Posted by nagas | Apr 11, 2021 @ 12:14 PM | 5,989 Views
Ingenuity Coaxial Helicopter

Most RC pilots, especially us chopper heads will be aware that taken along with the Perceverance Mars Rover, the first extraplanetary RC aircraft is due to make its maiden flight today 11th April 2021, the incredible Ingenuity coaxial helicopter. History in the making!

Ingenuity's design has clearly been influenced and much of it derived from the recent advances in RC helicopters, including flybarless, electronically stabilised flight control mechanisms as well as various components that can be bought off the shelf. Surprisingly, many of the componets in Ingenuity have been purchased by NASA, and can be found in other applications such as our mobile phones.

Ingenuity has a rotor diameter of 1.2m, a height of 0.49m and a total mass (not its weight on Mars!) of 1.8Kg with 350 Watts power available for a 90s flight.

The Phoenix Model and further details can be downloaded here:

Demonstration Video

Ingenuity flying at Jesero Crater. You can download the flying site here.

Ingenuity at Jesero Crater for Phoenix Flight Sim. (1 min 10 sec)

Posted by nagas | Mar 29, 2021 @ 01:50 PM | 8,204 Views
Pachisi Court located at Fatehpur Sikri near Agra in India holds very fond memories for me.

I visited as a seventeen year old young and idealistic hippy back in 1973. I remember sneaking in late at night during a full moon when it was officially closed until morning and having the whole place to myself, a mystical experience. Good job the guards didn't spot me!

Since that was nearly 50 years ago, I am planning to go back to India in 2023 if the Covid crisis is over and I am able too.

This is a work in progress and still needs some tidying up. As yet there are no collision surfaces.

It may get updated but in the mean time is posted "as is".

Hal Dhruv Sarang Display Team (1 min 15 sec)

Posted by nagas | Mar 29, 2021 @ 07:00 AM | 7,964 Views
The HAL Dhruv is a utility helicopter designed and developed by Hindustan Aeronautics Limited (HAL) from India. It has been named after an Indian mythological character, Dhruv, which in Sanskrit means 'unshakeable'.

The development of the Dhruv was announced in November 1984, and it was subsequently designed with assistance from Germany's Messerschmitt-Bölkow-Blohm (MBB) as a consultant and collaborative partner on the programme.

The helicopter first flew in 1992 and entered service in 2002. It is designed to meet the requirement of both military and civil operators, with military variants of the helicopter being developed for the Indian Armed Forces, while a variant for civilian/commercial use has also been developed. Military versions in production include transport, utility, reconnaissance and medical evacuation variants. Based on the Dhruv platform, the HAL Light Combat Helicopter (LCH) a dedicated attack helicopter and HAL Light Utility Helicopter (LUH), a utility and observation helicopter, are currently being developed.

As of October 2020, more than 300 HAL Dhruv have been produced for domestic and export markets. (Wikipedia)

Sarang ('Peacock') is the helicopter air display team of the Indian Air Force that flies four modified HAL Dhruv helicopters, also known as Advanced Light Helicopter (ALH). The team was formed in October 2003 and their first performance was at the Asian Aerospace show, Singapore, in 2004. The name Sarang is symbolic; the peacock is...Continue Reading