View allAll Photos Tagged Propeller
A bunch of sycamore keys dangling from a branch. We used to call them propellers or helicopters because of the way they twirled around when they fell.
▪︎Airframe Family: Supermarine Spitfire
▪︎Latest Model: Seafire III
▪︎Last Military Serial: PP972 RN
▪︎Construction Number: AIR/2605/C23(C)
▪︎Last Civil Registration: G-BUAR
▪︎Latest Owner or Location: Bentwaters Cold War Museum, Bentwaters Park, Rendlesham, Suffolk, England
Date / Event
▪︎1944 - Constructed as a Seafire III / Taken on Strength/Charge with the Royal Navy with s/n PP972.
▪︎From 21st January 1992 to 26th November 1993 - To Precious Metals Ltd, 7 New Street, Saint Peter Port, Guernsey with new c/r G-BUAR.
▪︎From 26th November 1993 to 9th August 2004 - To Wizzard Investments Ltd PO BOX 702 Jersey keeping c/r G-BUAR.
▪︎Circa 17th July 2012 - Certificate of airworthiness for G-BUAR (SEAFIRE MKIII, AIR/2605/C23(C)) issued.
▪︎2012 17th July - To Air Leasing Ltd, The Cangle, Colne Engaine Road, Halstead, CO9 2QG keeping c/r G-BUAR.
▪︎2012 17th July - To Air Leasing Ltd, The Cangle, Halstead with new c/r G-BUAR / To Bentwaters Cold War Museum, Bentwaters Park, Rendlesham, Suffolk, England.
Supermarine Seafire LF.III PP972 was one of 250 Type 358 Seafire L.F.III aircraft ordered from Westland Aircraft in July 1943. PP972 left the works during September 1944 and was transferred to 809 (Naval) Squadron in November of that year. 809 Squadron saw service in the Far East onboard HMS Stalker during the later stages of the war. With its work done in the Far East the squadron sailed for its new temporary home at Royal Naval Air Station (RNAS) Nutts Corner, Northern Ireland before the squadron disbandment during January 1946.
PP972 was then issued to 767 (Naval) Squadron in May of 1946 as part of No.1 Operational Flying School, initially at RNAS Easthaven before reloating to RNAS Lossiemouth and her satellite landing airfield of Milltown, Morayshire.
The aircraft was then transferred to the French Aeronavale with code No.12F2 then later to 1F9 when it was operated from the carrier “Arromanches” in Indo China. After it was retired from technical training in 1949 it was placed in storage at Hyéres and eventually ended up in a wired off compound at Base Aeronavale 83 Gavres, near Loirent. She was privately purchased in 1970 and moved to the aerodrome at Vannes-Meucon. There the aircraft was restored to static condition and exhibited at the Resistance Museum at St Marcel from 1982. The aircraft was acquired by a new owner in 1987 and moved back to the UK. On 24th May 2012 PP972 was transferred to the workshops of Air Leasing Ltd at Bentwaters, Suffolk, on charter, to commence a final restoration to airworthy condition and was registered in their name on 17th July 2012.
General Characteristics:
▪︎Location: Sywell Aerodrome
▪︎Owner: Air Leasing Ltd
▪︎Role: Carrier-Based Fighter
▪︎National Origin: United Kingdom
▪︎Manufacturer: Supermarine
▪︎First Flight: 7th January 1942
▪︎Built: 1944
▪︎Status: Retired
▪︎Primary Users: Royal Navy / French Navy / Irish Air Corps / Royal Canadian Navy
▪︎Number Built: 2,646
▪︎Developed From: Supermarine Spitfire
▪︎Crew: 1
▪︎Length: 30ft 2½in / Wingspan: 36ft 10in / Height: 11ft 5½in tail down with propeller blade vertical
▪︎Empty Weight: 5,317 / Gross Weight: 7,232lb
▪︎Fuel Capacity: Internal fuel + provision for 30 imperial gallons / 45 imperial gallons / 90 imperial gallon belly drop-tanks
▪︎Powerplant: 1 x Rolls-Royce Merlin 55 (or 45 / 46 / 50) V-12 liquid-cooled piston engine, 1,585hp
▪︎Maximum Speed: 359mph at 36,000ft / Cruise Speed: 272mph
▪︎Range: 465 miles cruising speed
▪︎Service Ceiling: 36,000ft
▪︎Rate of Climb: 3,250 ft/min
▪︎Time to Altitude: 20,000ft 8 minutes 6 seconds
▪︎Armament:
2 x 0.787in Hispano Mk.II Cannon / late Seafire IIIs Hispano V Cannon, 120 rpg
4x 0.303in Browning Machine Guns in wings, 350 rpg
8 x 60lb Rockets
2 x 250lb Bombs one under each wing / 1 x 500lb Bomb under fuselage.
Sourced from:
www.aerialvisuals.ca/AirframeDossier.php?Serial=155243
warbirdaviation.co.uk/Profiles/supermarine-seafire-lf-iii...
Charles Parsons tried many different designs of propellers in tanks before settling on this configuration of three propellers on each shaft.
as unglam as its gonna sound i thought this was very poor thing/beautiful
i was taking a piss at some random neighbourhood shopping mall before running off to attend a friends malay wedding. and just above the urinal was this little skylight window with a exhaust fan stuck to it..
And you know when old pals get married, you kinda have this sudden catharsis? like how your peers really took a different route from where you're going? and all that other thoughts about your so called "life"? I don't really see the link myself but i thought whoever placed the exhaust fan here must have talked to it and heard its dreams of being a propeller on some jetplane. The one that wanted to see the world and didn't want to be stuck in some random public toilet.
So whoever placed it there heard its plea and propped the fan up the window. Hereis where the setting sun shines thru, with the beautiful sky with the specks of cloud and the large plains where everyone seems so tiny(its in the Woodlands field...but well you make do with what you have lah). Here was where the propeller could pretend to be like the big props in the sky.
so take heart young propeller, one day you'll break out of the glass prison your in, get recycled and end up as a prop on the worlds first recycled plastic commercial airplane. (isn't recycling all the rage now?) There you'll see vast oceans and jungles that stretch into the horizon. Everyone else will hear your story and more exhaust fans will be placed on windows (which is silly but really nice! like in this picture) hoping to be a big prop like you one day.
So dear propeller, keep on spinning !
*the author is taking a 6 month study/exchange trip to melbourne and really hopes to see more beautiful skies and break out the glass prison. He thinks of himself as one of the few propellers that really wanted and finally could*
A propeller from the RMS Lusitania on display as part of the Merseyside Maritime Museum collection on display at Canning Dock, Liverpool.
The information board alongside reads:
"Lusitania propeller, 1909
This propeller was one of four from passenger liner RMS Lusitania (1907). She sailed between Liverpool and New York until she was torpedoed by the German submarine U-20 on 7 May 1915 with the loss of 1,191 lives.
Lusitania and her sister ship Mauretania were owned by Liverpool's Cunard Line and carried passengers and mail on regular services to the U.S.A. Lusitania held the Blue-Riband for the fastest crossing of the Atlantic by a passenger vessel. making the trip in under 4.5 days. This propeller was fitted in 1909 to improve her speed.
Lusitania continued her transatlantic run after the outbreak of the First World War until she sank in under twenty minutes off the coast of southern Ireland. People were outraged by the deliberate targeting of a passenger ship and Lusitania's fate still causes controversy today."
From the opening sequence of "We Are Hull" - part of Made in Hull - in Queen Victoria Square, Hull.
The propeller represents Hull's long maritime conections.
'Made in Hull' tells Hull's recent history from World War II to the present day.
There are several installations in the city. The installation in Queen Victoria Square is projected onto the City Hall, the Maritime Museum and Ferens Art Gallery. And is amazing, spectacular and moving.
DISCLAIMER
Nothing you see here is real, even though the conversion or the presented background story might be based historical facts. BEWARE!
Some background
The Kawasaki Ki-121 was an experimental fighter aircraft that used a license-built (Kawasaki) DB 601 liquid-cooled engine, the Ha-40, augmented by a turbosupercharger. This was at that time an unusual choice because the majority of Japanese aircraft at that time used air-cooled radial engines.
The Ki-121 was designed by Takeo Doi and his deputy Shin Owada of Kawasaki Aircraft Industries (Kawasaki Kokuki Kogyo K.K.) in 1942, who had already designed the Ki-60 and Ki-61 interceptors in 1940. The emphasis in the requirements was for a high speed and a good rate of climb, along with a cannon armament. This was in due response to a complete change from the usual IJAAF penchant for lightly armed, highly manoeuvrable fighters with lightweight structures, which proved to be unsatisfactory against heavy bombers and their escort fighters.
The first prototype of the Ki-121 emerged in March 1943 as a compact, all metal, stressed skin monoplane, bearing a strong resemblance to the Ki-61. Its tapered wings featured initially square wing tips and were built around a system of three spars; a Warren truss main spar and two auxiliary spars. The rear spar carried the split flaps and long, narrow chord ailerons, while the front spar incorporated the undercarriage pivot points. The undercarriage track was 3 metres (9 ft 10 in). The pilot's seat was mounted over the rear spar, the cockpit sported a bubble canopy, another innovative feature that allowed the pilot excellent view.
The first prototype was powered by an imported DB 601A-1 with a radial compressor, rated at 960 hp. This was soon replaced by an Aichi AE1 Atsuta 12 engine (a license-built, modified version of the DB 601) which was mated with a turbo supercharger, installed on the port fuselage side, right behind the engine block. This new engine put out 1.560 hp and drove a four-bladed propeller. This especially improved performance at greater heights.
Another innovative feature of the Ki-121 was the steam vapour cooling system for its engine, which had been successfully tested in parallel for the heavy Ki-64 fighter on a Ki-61 test bed. The system was installed in the outer wings. It effectively reduced drag and made an external radiator superfluous. The oil cooler was mounted under the engine (the first prototype sported a single radiator bath, which was later replaced by two drum coolers). A total fuel capacity of 550 l (121 Imp gal) was carried in self-sealing fuel tanks in the lower hull and inner wings, which could be augmented by 2 x 200 l (44 Imp gal) drop tanks under wing hardpoints.
The armament consisted of two synchronized, fuselage mounted 12.7 mm calibre Ho-103 machine guns which were set in a "staggered" configuration (the port weapon slightly further forward than that to starboard) just above and behind the engine. In the prototype, one German-made Mauser MG 151/20 20 mm cannon was housed in each wing, just outside of the landing gear wells and the propeller’s radius. The wing hardpoints could, alternatively to the drop tanks, carry a maximum bomb weight of 160kg each or unguided 60 lbs. air-to-air rockets.
From the start of flight testing it became apparent that the original design was seriously flawed in several key areas. The take-off run was unacceptably long, while in flight the aircraft displayed some directional instability, excessively heavy controls and poor control response. The spinning characteristics were described as 'dangerous' and the stalling speed was very high. On the positive side, the re-engined Ki-121 prototype showed an impressive top speed of 640 kilometres per hour (400 mph) and a very good rate of climb. Additionally, the cooling system worked well and reliably, only the oil cooler capacity had to be improved.
As a result the second prototype, which was still being built, was hurriedly modified in an attempt to mitigate some of the more undesirable traits. Some 100 kilograms (220 lb) was removed, primarily by replacing the MG 151 cannons with Ho-5 machine guns and through structural simplifications. The stabilizer areas were tremendously enlarged (both vertical and horizontal fins). Coupled with a slight increase in wing area to 16.80 m² (180.8 ft²) through rounded wing tip extensions this resulted in a slightly lower wing loading and better handling characteristics. Detail changes were also made to airframe sealing and to the contours of the oil cooler air intakes.
Flight tests carried on, and while most shortcomings could be ironed out, the modified prototypes still displayed most of the shortcomings, just to a lesser extent. The supercharged engine also caused teething troubles – maintenance requirements were high. By this time Kawasaki's Ki-100, which had also been designed as a dedicated interceptor as a Ki-61 derivate, was also beginning to show promise and the Koku Hombu selected this type in fulfilment of its requirements.
Nevertheless, the Ki-121 was approved by the Koku Hombu as 'Army Type 6 Fighter' because of its high speed. An order was placed for one additional prototype and eighteen pre-production aircraft with even more enlarged tail fins. These bore the designation Ki-121-I and were named "Hitofuki" (‘gust of wind’ or ‘blast’). A further version with enlarged wing span as a high altitude interceptor, the Ki-121-II, was also in the design stage, but did not become hardware. The use of 2 × 30 mm (1.18 in) Ho-155 cannon in the wings was also envisioned.
The war's soon end however stopped the construction of further planes. The number of prototypes remained two, and twelve Ki-121-I pre-production aircraft with marginal improvements reached frontline squadrons in April 1945. It is not known if the Ki-121 was actively involved in homeland defence, it never received an allied code name - active planes will probably have been mistaken for Ki-61 fighters. Eventually, the Ki-121 did not progress any further. Its place was taken by the less complicated and more promising Ki-100 with a radial engine.
General characteristics:
Crew: 1
Length: 8.90 m (29 ft 2 in)
Wingspan: 10.58 m (34 ft 9 in)
Height: 3.05 m (10 ft 0 in)
Wing area: 16.80 m² (180.8 ft²)
Empty weight: 2.580 kg (5.690 lb)
Max. take-off weight: 3,900 kg (8,600 lb)
Maximum speed: 640 km/h (345 kn, 400 mph) at 7,500 m (24,600 ft)
Range: 950 km (515 nmi, 590 mi)
Service ceiling: 11,500 m (37,730 ft)
Time to 5,000 m altitude: 4 min 47 sec
Engine: 1 supercharged Aichi AE1T Atsuta 12 twelve-cylinder inverted vee liquid-cooled engine, rated at 1,560 hp for take-off, 1,340 hp at 2,100 m and 1,190 hp at 5,800 m.
Armament:
2 × 12.7 mm Ho-103 machine guns, 400 rpg, in the nose
2 × 20 mm Ho-5 cannon, 250 rpg, in the wings
Bombs: 2 × 160 kg (350 lb) bombs or 2 x 200 l (44 Imp gal) drop tanks on underwing hardpoints
The kit and its assembly
In case you are in doubt: this is a whiff! The fictional Ki-121 actually is an Italian Macchi C.205 'Veltro' (an Italeri kit). I settled on this machine since it can easily be mistaken for a Ki-61 – e. g. both planes used the same DB 601 engine, and originally I just wanted to create a colour version in Japanese markings. But with building progress, things turned more and more Frankenstein, so that only hull and wings are original.
Cosmetic surgery and replacement parts include:
● Bubble canopy from an A-1 Skyraider single seater (a bit large, took some putty work…)
● Rear fuselage section was lowered for the new bubble canopy
● Horizontal stabilizers from a DH.88 Comet
● Vertical stabilizer is the tip of a Ju 188 elevator
● New wheels on the original (though reversed) main landing gear struts
● Scratch-built, semi-recessed turbocharger on port side
● Relocating the original air intake to starboard, w/o the sand filter
● For-bladed propeller and spinner from a Spitfire Mk. XVI
● Wing hardpoints (empty, though, for the sake of the plane’s clear lines)
● The original C.205’s radiator bath was omitted
● Flaps were lowered/opened, with some interior details
No dramatic change was intended, since the C.205's lines are pretty elegant and IMHO match Kawasaki’s designs of the era, like the Ki-61 or Ki-64, well. The result is a compact machine, reminiscent of a heavily shrunk Blackburn Firebrand prototype?
Painting
Since the fictional history of the Ki-121 only saw a couple of fighters in uncertain front line use, I settled on a typical late IJAAF livery based on various sources and references: overall blank metal (Testor’s Metallizer Aluminium Plate #1401) with a black anti-glare panel (Humbrol 33), coupled with an improvised, dark green camouflage on the upper surfaces and some colourful squadron markings.
Cockpit interior surfaces were painted in ‘Aodake Iro’, simulated with a base of Aluminium (Humbrol 56) and a coat of translucent blue paint on top of that. The landing gear wells were painted in a mix of Humbrol 225 (Mid Stone) and 155 (Olive Drab), for a greenish tan colour.
Hinomaru and squadron emblems come from the scrap box. The blue markings are fictional, the red dragon head emblems come from an aftermarket decal sheet. They belong to the JASDF 105 Sqn, which flew Ki-61 from Aug.’44-Aug. ’45, so it is IMHO a potential/plausible user for the Ki-121-I. This sentai later switched to F-86D interceptors - and from these machines come the emblems.
Since the improvised camouflage easily chipped/weathered (no primer was applied), a slightly ratty look was intended. Hence, decals were already applied onto the aluminium base coat, after basic markings like the glare panel or the yellow identification marks (with Humbrol 69) on the wings’ leading edges had been painted. Then, Humbrol’s Maskol was dabbed onto certain areas with a toothbrush and a fine, stiff-bristled brush around markings and hinomaru.
On top of that, green mottles and streaks (Humbrol 159, Khaki Drab, as a simultaion of the IJAAF's "A.2 Olive Green" tone) were applied with a small brush. The idea was to create a hand-painted look, with aluminium shimmering through and many extra worn areas that show even more bare metal skin.
After rubbing the Maskol off, the metal surface was sealed with a semi-matte, water-based varnish, while the glare panel remained matte, as well as the propeller (spinner in Red Brown, Humbrol 160, blades in Testor’s ‘Rubber’, #1183). Worn look and details were augmented by a light wash with black ink and some light dry painting, e .g. for exhaust marks and gun smoke residues.
All in all, this small and rather simple model kit was built in a couple of days as a distraction from my major Venator conversion.
a crease pattern for the propeller box.
red is mountain, blue is valley while you are looking at the outside of the box.
the grey lines are guide lines to provide references. I urge you not to actually fold them as they spoil the look of the final box. you can totally substitute them with some small pinches at the right places.
Wooden propeller & radial engine of Jim Beisner, Steve Boone, & Marla Boone's 1928 WACO ASO, tail #NC5852, at the annual 2014 WACO Vintage Fly-In at WACO Airfield and Museum, Troy, Ohio
WAITING.... the monument near the Pier Head, Liverpool, dedicated to the Liverpool carter's horses - standing near to the propeller of the RMS Lusitania, which was sunk by a German U-Boat in May 1915 which resulted in the deaths of almost 1200 people..
Propeller cloud.
Tried to find a name, and when backlit, each 6 teardrop group appears to have a 3 blade propeller in the midde.
And the back, with the triangle twist has a similar effect.
Molecule: glassine paper, hexagon from 20x20 cm square, 32 division grid.
Box: star paper lid, 32 division grid, Eh bottom.
Tessellation: tant paper, hexagon from 30x30 cm square, 64 division grid.
Planning to fold another one, refining the border folds.
CP: 2 version, 1 for thw 64 division grid, the other one for 32, 64 and 96 division grid.
Belonging to one of the "Yellow submarines" in which tourists can look at the sea flora through semi-transparent plastic windows from beneath the surface for 39€.
All photo rights are owned by Doc's Friends, Inc. and use of the photos on this site for publication must be approved by Doc's Friends, Inc. For more information, contact: www.b-29doc.com/media-contact/
Object information:
Other Designations: Caldwell 44, NGC7479, Propeller Galaxy, Superman Galaxy
Constellation: Pegasus
Distance: 120 M LY
Apparent Magnitude (V): 11
Description:
The Propeller Galaxy (NGC 7479) is a barred spiral galaxy located about 120 million light-years away from Earth in the northern constellation of Pegasus (the Winged Horse), while it is racing away from us at some 2381 kilometers per second.
It has a very asymmetric spiral structure with a bright, long bar. Its tightly wound arms create an inverted ‘S’, as they spin in an
anticlockwise direction. However, at radio wavelengths, it spins the other way, with a jet of radiation that bends in the opposite direction to the stars and dust in the arms of the galaxy.
This radio jet in the Propeller Galaxy was probably put into its
bizarre backwards spin by a recent minor merger with another galaxy.
NGC 7479 is also classified as a Seyfert galaxy, a galaxy with an
extremely bright, active galactic nucleus (AGN), that contains a
supermassive black hole.
[Last year I imaged this galaxy 1314mm focal length (f/6.3). I am now able to image it at 2165mm (f/10). Even at f/10 the galaxy is small, so I have cropped this image slightly.]
================================
Location: backyard, Richmond, VA
Date: 9-14-2023
Conditions: Clear and cool.
Seeing: average
Equipment:
Scope: Celestron C-8
Camera: ASI294MM
Mount: iOptron CEM-70
Filters: Astonomik Deep-Sky RGB, Astronomik L-2 Luminance
Software: Astro Pixel Processor, Pixinsight, Gimp
Imaging Settings:
Binning: 2x2
Gain: 120
Temp: -10C
focal length: 2165mm
subs:
L 84 x 120s
R 16 x 180s
G 16 x 180s
B 15 x 180s
Total integration time: 5 hr 9 min
Ncomment blogspamed:
ncomment.com/blog/2008/09/23/propeller/
Gerard Barberi experimentally submits it to Propeller:
www.propeller.com/story/2008/09/24/propeller-design-flaw/
Added to Mixx by cGt2099:
All photo rights are owned by Doc's Friends, Inc. and use of the photos on this site for publication must be approved by Doc's Friends, Inc. For more information, contact: www.b-29doc.com/media-contact/
All photo rights are owned by Doc's Friends, Inc. and use of the photos on this site for publication must be approved by Doc's Friends, Inc. For more information, contact: www.b-29doc.com/media-contact/
Designer: Seiji Nishikawa
Diagram: Essential Origami book by Steve & Megumi Biddle
Unit: 2 squares
Paper: Kraft Paper
The book says, "In Japan this model is folded when congratulations are given, such as at New Year or at a wedding".
All photo rights are owned by Doc's Friends, Inc. and use of the photos on this site for publication must be approved by Doc's Friends, Inc. For more information, contact: www.b-29doc.com/media-contact/
All photo rights are owned by Doc's Friends, Inc. and use of the photos on this site for publication must be approved by Doc's Friends, Inc. For more information, contact: www.b-29doc.com/media-contact/
April 9, 2014: Outer housing mostly complete, work begins on making the inner mechanism. Here one of four blade inner rotational elements is readied for a taper cut. This will free it to rotate with its neighbors in the closely packed interior.
Made from salvaged junk from my local scrapyard. The base is made a spun stainless steel half sphere..I found two of them but have no clue what they were from or for. The section on top of the base is ceramic, originally was used at a power station... also from the scrap yard, some kind of vintage propeller fan blade, there some auto transmission parts and a few other scrap yard finds.
The chairs are also from the same local scrap yard.
All photo rights are owned by Doc's Friends, Inc. and use of the photos on this site for publication must be approved by Doc's Friends, Inc. For more information, contact: www.b-29doc.com/media-contact/