File:Barnett J4B ‘G-BWCW’.jpg
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[edit]DescriptionBarnett J4B ‘G-BWCW’.jpg |
English: c/n PFA G/14-1256
Built 1995 Joined the museum in October 2015. The Helicopter Museum Weston-super-Mare, North Somerset, UK 2nd October 2020 The following information is from The Helicopter Museum website:- “The Barnett autogyro (or Gyroplane and Gyrocopter as such personal machines were popularly described) was developed by Jerry Barnett in Olivehurst, California during the 1960s. Barnett was looking to improve on the basic Bensen-style gyrocopter of the day, increasing range and performance and improving safety. He established the Barnett Rotorcraft Company in 1962 to market his design for home kit building by customers and began with the J1, which featured a welded open airframe and evolved into the similar J2 with a 40hp Volkswagen engine driving the pusher airscrew. In turn this led to the J3m with an open cockpit with fabric covered sides. For his next improvement Barnett developed the fibreglass body shell with an enclosed cockpit and introduced the more powerful 100hp Continental 0-200 powerplant with a 7m diameter rotor. The design was also distinctive for its tall fin unit. In its single-seat layout this was designated the J4B, which first flew on 15 July 1968. A two-seat version, the J4B-2 was also made available and one of these broke the US coast-to-coast record in 1989, flown by Howard Merkel. Further versions were designated the J4B-2T as a two-seat trainer which became the BRC 540 Coupe after the 8th production example. A typical J4B had a gross weight on 400kg (880lb) and an empty weight of 240kg (530lb) so could carry a useful payload and achieve speeds of up to 200km/h (125mph). At least 222 kits were sold over the following years, although inevitably it is impossible to establish how many were actually completed and flown. The J4B in the Helicopter Museum's collection was purchased as a kit and assembled by Stephen Kirkby of Chandlers Ford, Eastleigh in Hampshire in 1995, using original Barnett Rotorcraft plans and intended to be flown under a Permit to Fly. It was registered with the Civil Aviation Authority on 5 May 1995. Having completed construction at his home, including the installation of a 115hp Lycoming 0-235 piston engine, Kirkby relocated the aircraft to Farley Farm airstrip, near Hursley, where it was ground run but never flown. Subsequently the powerplant was removed and sold on. The registration was cancelled on 3 March 2005 as 'permanently withdrawn from use', by which time the airframe had been apparently abandoned and left to languish in the long grass (literally) at the strip. 10 years later, the airframe came to the notice of The Helicopter Museum and, following discussions with the airfield owner, was donated and transported to Weston-super-Mare on 28 October 2015 for restoration and display. This required the manufacture of some key missing components and the acquisition of an engine and airscrew, sadly still unresolved.” |
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Source | https://www.flickr.com/photos/65001151@N03/51060133692/ |
Author | HawkeyeUK |
Camera location | 51° 20′ 21.21″ N, 2° 55′ 51.91″ W ![]() | View this and other nearby images on: OpenStreetMap | ![]() |
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This image was originally posted to Flickr by HawkeyeUK at https://flickr.com/photos/65001151@N03/51060133692. It was reviewed on 1 April 2021 by FlickreviewR 2 and was confirmed to be licensed under the terms of the cc-by-sa-2.0. |
1 April 2021
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current | 19:22, 1 April 2021 | ![]() | 5,634 × 3,756 (16.29 MB) | Ser Amantio di Nicolao (talk | contribs) | Uploaded a work by HawkeyeUK from https://www.flickr.com/photos/65001151@N03/51060133692/ with UploadWizard |
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Camera manufacturer | NIKON CORPORATION |
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Camera model | NIKON D5500 |
Exposure time | 1/40 sec (0.025) |
F-number | f/3.5 |
ISO speed rating | 400 |
Date and time of data generation | 14:31, 2 October 2020 |
Lens focal length | 18 mm |
Width | 6,000 px |
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Number of components | 3 |
Horizontal resolution | 939 dpi |
Vertical resolution | 939 dpi |
Software used | Adobe Photoshop Elements 14.0 (Windows) |
File change date and time | 18:50, 21 March 2021 |
Y and C positioning | Co-sited |
Exposure Program | Normal program |
Exif version | 2.3 |
Date and time of digitizing | 14:31, 2 October 2020 |
Meaning of each component |
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APEX aperture | 3.61471 |
APEX exposure bias | 0 |
Maximum land aperture | 3.6 APEX (f/3.48) |
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Light source | Unknown |
Flash | Flash did not fire, compulsory flash suppression |
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Sensing method | One-chip color area sensor |
File source | Digital still camera |
Scene type | A directly photographed image |
Custom image processing | Normal process |
Exposure mode | Auto exposure |
White balance | Auto white balance |
Digital zoom ratio | 1 |
Focal length in 35 mm film | 27 mm |
Scene capture type | Standard |
Scene control | Low gain up |
Contrast | Normal |
Saturation | Normal |
Sharpness | Normal |
Subject distance range | Unknown |
GPS tag version | 0.0.3.2 |
Serial number of camera | 2194296 |
Rating (out of 5) | 0 |
Date metadata was last modified | 18:50, 21 March 2021 |
Unique ID of original document | 8E38F4FB716F6E16554025080689882C |
IIM version | 32,767 |