For fixed-wing aircraft, ground effect is the reduced aerodynamic drag that an aircraft's wings generate when they are close to a fixed surface. Reduced drag when in ground effect during takeoff can cause the aircraft to "float" while below the recommended climb speed. The pilot can then fly just above the runway while the aircraft accelerates in ground effect until a safe climb speed is reached.
Stem or STEM may refer to:
A cog is a type of ship that first appeared in the 10th century, and was widely used from around the 12th century on. Cogs were clinker-built, generally of oak. These vessels were fitted with a single mast and a square-rigged single sail. They were mostly associated with seagoing trade in north-west medieval Europe, especially the Hanseatic League. Typical seagoing cogs ranged from about 15 to 25 meters in length, with a beam of 5 to 8 meters and were 30–200 tons burthen. Cogs were rarely as large as 300 tons although a few were considerably larger, over 1,000 tons.
Strake Jesuit College Preparatory is a Jesuit, college-preparatory school for boys, grades 9–12, in the Chinatown area and in the Greater Sharpstown district of Houston, Texas, United States. It is near Alief.
Clinker built is a method of boat building where the edges of hull planks overlap each other. Where necessary in larger craft, shorter planks can be joined end to end, creating a longer strake or hull plank. The technique originated in Scandinavia, and was successfully used by the Anglo-Saxons, Frisians, Scandinavians, typically in the vessels known as cogs employed by the Hanseatic League. Carvel construction, where plank edges are butted smoothly, seam to seam, supplanted clinker construction in large vessels as the demand for capacity surpassed the limits of clinker construction..
On a vessel's hull, a strake is a longitudinal course of planking or plating which runs from the boat's stempost to the sternpost or transom. The garboard strakes are the two immediately adjacent to the keel on each side.
In fluid dynamics, vortex shedding is an oscillating flow that takes place when a fluid such as air or water flows past a bluff body at certain velocities, depending on the size and shape of the body. In this flow, vortices are created at the back of the body and detach periodically from either side of the body forming a Kármán vortex street. The fluid flow past the object creates alternating low-pressure vortices on the downstream side of the object. The object will tend to move toward the low-pressure zone.
A gripe is a simple form of clamp used in building a clinker boat, for temporarily holding the strake which is being fitted onto the one to which it is to be attached. The strake is relatively thin and wide, so the tool must have a long reach and requires only a small movement. This is achieved by taking two pieces of dense timber, typically oak, each of a length a little more than twice the widest width of the strake. A coach bolt is fitted through the middle and adjusted so that the gripe will fit onto the land while admitting the point of a wedge between the free ends of the two parts of the gripe. The wedge is then tapped in so that the gripe grips the land, using the bolt as a fulcrum.
The Bevaix boat is a 1st-century Gallo-Roman wreck from the Bay of Bevaix, Lake Neuchatel, Switzerland. The remains of the ship, and a modern reconstruction, are on display at the Laténium archeology museum.
Divine Strake was the official designation for a large-yield, non-nuclear, high-explosive test that was planned for the Nevada National Security Site, formerly the Nevada Test Site. Following its announcement, the test generated great controversy, centering on two issues: its potential value in developing a nuclear "bunker buster" warhead, and the possibility that the mushroom cloud generated by the explosion could carry large amounts of radioactive dust deposited at the Test Site over years of nuclear testing.
A Balangay, or barangay is a type of lashed-lug boat built by joining planks edge-to-edge using pins, dowels, and fiber lashings. They are found throughout the Philippines and were used largely as trading ships up until the colonial era. The oldest known balangay are the Butuan boats, which have been carbon-dated to 320 AD and were recovered from several sites in Butuan, Agusan del Norte.
A falkusa is a traditional fishing boat used by fishermen from the town of Komiža on the Adriatic island of Vis, Croatia. Falkuša is a subtype of gajeta, a traditional Dalmatian fishing sailboat, and is sometimes called gajeta falkuša. Its design was adapted to the specific needs of Komiža fishermen, who went to long fishing expeditions in the open seas, a unique practice in the Adriatic and Mediterranean.
In ships, frames are ribs that are transverse bolted or welded to the keel. Frames support the hull and give the ship its shape and strength.
In aviation, a strake is an aerodynamic surface generally mounted on the fuselage of an aircraft to improve the flight characteristics either by controlling the airflow or by a simple stabilising effect.
Amazon Relational Database Service is a distributed relational database service by Amazon Web Services (AWS). It is a web service running "in the cloud" designed to simplify the setup, operation, and scaling of a relational database for use in applications. Administration processes like patching the database software, backing up databases and enabling point-in-time recovery are managed automatically. Scaling storage and compute resources can be performed by a single API call to the AWS control plane on-demand. AWS does not offer an SSH connection to the underlying virtual machine as part of the managed service.
"The Ship that Found Herself" is a short story by Rudyard Kipling, first published in The Idler in 1895. It was collected with other Kipling stories in The Day's Work (1898).
Johanna Maria "Annemarie" Penn-te Strake is a Dutch jurist and politician. She has been mayor of Maastricht since 1 July 2015.
Lepa, also known as lipa or lepa-lepa, are indigenous ships of the Sama-Bajau people in the Philippines and Malaysia. They were traditionally used as houseboats by the seagoing Sama Dilaut. Since most Sama have abandoned exclusive sea-living, modern lepa are instead used as fishing boats and cargo vessels.
Matthew Boling is an American track and field athlete specializing in the sprints and long jump. He won four gold medals at the 2019 Pan American U20 Championships in the 100 m, 200 m, 4 × 100 m relay and 4 × 400 m relay, and helped set world under-20 records in both of the relay races for the United States. He also ran in the semi-final for the American 4 × 400 m relay team at the 2018 World U20 Championships that went on to earn silver in the final.
Tataya are traditional small fishing boats, with or without outriggers of the Ivatan people in the Philippines. They are generally round-hulled and powered by rowers or sails made from woven pandanus leaves. They have several variants based on size and island of origin. The term tataya can also be used for all traditional boats in the Batanes Islands in general, similar to the term bangka in the rest of the Philippines.
