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On the second to last day of my vacation, November 2, I went to the Morton Arboretum and found they were having a "Controlled Burn". Of course I had to park and take some pictures of this—something you don't see everyday at the Arb. I was thinking of naming them "Cheech and Chong Visit The Arboretum" but decided on the more conservative naming convention.
This control tower was used to control the, now disused, bombing range off the Lincolnshire Coast. Taken from G-CEVS EV97 on 24th August 2014.
William Klein checking control effectiveness in ponderosa pine tree sprayed with ethylene dibromide to control mountain pine beetle (Dendroctonus monticolae). Bauer's Creek area. Fremont National Forest, Oregon.
Photo by: Ken H. Wright
Date: June 17, 1960
Credit: USDA Forest Service, Pacific Northwest Region, State and Private Forestry, Forest Health Protection.
Collection: Portland Station Collection; La Grande, Oregon.
Image: PS-3042
For additional historic forest entomology photos, stories, and resources see the Western Forest Insect Work Conference site: wfiwc.org/content/history-and-resources
Image provided by USDA Forest Service, Pacific Northwest Region, State and Private Forestry, Forest Health Protection: www.fs.usda.gov/main/r6/forest-grasslandhealth
From Moebius, the Seaview (1/128 scale) comes with a great control room. I chose to display mine outside the submarine, so it can be seen in all its glory.
Paddock was built at the start of the 2nd World War below the Post Office Research Station in Dollis Hill. The purpose of the two level citadel was to act as a standby to the Cabinet War Rooms in Whitehall. The bunker became operational in 1940 with the War Cabinet meeting there on 3rd October.
Churchill did not like the new bunker and by the autumn of 1943 the standby cabinet war rooms were relocated to the North Rotunda in Marsham Street, close to Whitehall; Paddock was abandoned the following year.
During the cold war, Paddock was suggested as a replacement for the North London Group War Room at Partingdale Lane, Mill Hill but this was rejected by the GLC. It was also, along with Station Z at Harrow, suggested as the Main Control Centre for the whole of London with the 4 (later 5) Group Controls reporting to it. The idea of 1 central control was never adopted and the upper floor at Paddock was relegated to a Post Office social club.
Following closure of Post Office Research Station, in the mid 1990's the site was sold to a property developer who converted the Research Station into luxury flats with a new housing estate on the rest of the site. The single storey surface building above Paddock was demolished but the citadel, which has local authority listing was untouched and two access points were retained one an unobtrusive steel door in a wall between two houses and the other a brick blockhouse beside the road which also houses a small electricity sub station. The site has now been handed over to a housing association.
[Subterranea Britannica www.subbrit.org.uk]
This is the “HobbyKing Quadcopter Control Board V2 (Atmega168PA)” [QUAD-CON16K] board. It’s bases on the KK control board. It contains three Japanese Murata piezo gyros for roll, pitch and yaw that are meant to be less sensitive to vibration than other gyros. The board has an Atmega168PA micro controller.
The board is meant to stabilise the quadcopter during flight. While there is documentation and I understand some of it I’m still struggling with this board. Adjusting the pots for roll, pitch and yaw is proving difficult but may not be the cause of my failing to fly.
The control tower at Greenham Common is due to be some sort of visitor's centre, selling souvenirs. I don't know, a miniature replica ICBM for your keyfob or something.
Peer down on this puny building from your almighty vantage point with the Google Earth linker.
Denver, CO -- The control tower is one of the last prominent features remaining from Stapleton International Airport. The tower now stands center of a residential and park redevelopment project. The last flight controlled by the tower was on February 25, 1995, when a Continental flight departed for London.
This work by cooper gary is licensed under a Creative Commons Attribution-NonCommercial-NoDerivs License. If you use this photo, please credit as "photo by cooper gary" with a link-back to this page on Flickr.
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USS Becuna (SS-319)
Philadelphia PA
Length: 307 feet, 7 inches
Beam: 27 feet
Displacement: 1,800 tons surfaced, 2,400 tons submerged
Crew: 8 commissioned officers, 5 chief petty officers, 67 enlisted men
Top Speed after Guppy refit: 15 knots (17mph) submerged, 18 knots (21mph) surfaced
Launched in 1944, the Becuna (SS-319) completed five wartime patrols in the Pacific Ocean. Becuna is similar to many submarines built in Philadelphia for the U.S. Navy.
Becuna is a BALAO-class submarine built in New London, CT. During World War II, "Becky" prowled the Pacific Ocean for Japanese ships, and is credited with sinking 3.5 Japanese merchant ships. Converted in 1951 to a Guppy 1A type with sophisticated radar and torpedo equipment including nuclear warheads, she is the only Guppy 1-A submarine on display.
The control board is a go between. The radio receiver passes on the signal for the control board to interpret which passes on a signal to each of the electronic speed controllers which controls the speed of the motors.
If the control board detects the quadcopter tilting down it counters it by speeding up the lowered motor and slowing down the raised motor.
Controls of the CMS magnet.
The voltmeter and ampmeter are clearly visible, with their respective scale.
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Motion control head I designed around a pair of surplus precision worm gearboxes. The vacuum infused carbon fibre covers are largely superficial/protective, they were my first experiment in directly CNC machining a mould. I machined the aluminium parts on my CNC router and anodized them at home.
Because the head was constructed around existing gearboxes its a little larger and heavier than I would like, weighing around 5KG but supporting loads upwards of 10kg.