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Saqr 3
Saqr a line of Unmanned aerial vehicles produced by the King Abdulaziz City for Science and Technology for the government of Saudi Arabia. , three models had been developed: Saqr 2, Saqr 3 and Saqr 4. All three models are manufactured from fiberglass and carbon composite material, making them lightweight and stealthy. The Saudi government has developed the craft for research purposes, and the units are equipped with cameras for aerial photography. According to Prince Turki bin Saud bin Mohammed, the Saqr-1 has a range of more than 2,500 km and can remain airborne for more than 24 hours. The UAV flies at an average altitude of 20,000 feet. It features a Ka band The Ka band (pronounced as either "kay-ay band" or "ka band") is a portion of the microwave part of the electromagnetic spectrum defined as frequencies in the range 26.5–40 gigahertz (GHz), i.e. wavelengths from slightly over one centim ... satellite communications system. These weapons are Chinese AR-1 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Unmanned Aerial Vehicle
An unmanned aerial vehicle (UAV), commonly known as a drone, is an aircraft without any human pilot, crew, or passengers on board. UAVs are a component of an unmanned aircraft system (UAS), which includes adding a ground-based controller and a system of communications with the UAV. The flight of UAVs may operate under remote control by a human operator, as remotely-piloted aircraft (RPA), or with various degrees of autonomy, such as autopilot assistance, up to fully autonomous aircraft that have no provision for human intervention. UAVs were originally developed through the twentieth century for military missions too "dull, dirty or dangerous" for humans, and by the twenty-first, they had become essential assets to most militaries. As control technologies improved and costs fell, their use expanded to many non-military applications.Hu, J.; Bhowmick, P.; Jang, I.; Arvin, F.; Lanzon, A.,A Decentralized Cluster Formation Containment Framework for Multirobot Systems IEEE Tr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Saudi Arabia
Saudi Arabia, officially the Kingdom of Saudi Arabia (KSA), is a country in Western Asia. It covers the bulk of the Arabian Peninsula, and has a land area of about , making it the fifth-largest country in Asia, the second-largest in the Arab world, and the largest in Western Asia and the Middle East. It is bordered by the Red Sea to the west; Jordan, Iraq, and Kuwait to the north; the Persian Gulf, Qatar and the United Arab Emirates to the east; Oman to the southeast; and Yemen to the south. Bahrain is an island country off the east coast. The Gulf of Aqaba in the northwest separates Saudi Arabia from Egypt. Saudi Arabia is the only country with a coastline along both the Red Sea and the Persian Gulf, and most of its terrain consists of arid desert, lowland, steppe, and mountains. Its capital and largest city is Riyadh. The country is home to Mecca and Medina, the two holiest cities in Islam. Pre-Islamic Arabia, the territory that constitutes modern-day Saudi Ar ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
King Abdulaziz City For Science And Technology
King Abdulaziz City for Science and Technology (KACST; ar, مدينة الملك عبدالعزيز للعلوم والتقنية) in Riyadh, Saudi Arabia is an organization established in 1977 as the Saudi Arabian National Center for Science & Technology (SANCST); in 1985, it was renamed King Abdulaziz City for Science and Technology. History In 1977, the ''Saudi Arabian National Center for Science and Technology'' (SANCST) was established, with Prof. Rida M.S. Obaid being the president. This center was created as an independent scientific organization that is responsible for the promotion of science and technology in Saudi Arabia. However, the name was later changed to ''King Abdulaziz City for Science and Technology'' (KACST). In 1987, KACST has joined the International Council for Science (ICSU) as a National Member. In 1984, Abdul Rahman Al-Athel was named as the President of the city. In 2007, Mohammed Ibrahim Al-Suwaiyel, who used to be the KACST vice president for re ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Saudi Arabian Army
Royal Saudi Land Forces ( ar, القُوَّاتُ البَرِّيَّةُ المَلَكِيَّة السُّعُودِيَّة, Al-Quwwat al-Bariyah al-Malakiyah as-Su'udiyah) is the land warfare service branch of the Armed Forces of Saudi Arabia. It is part of the Ministry of Defense (Saudi Arabia), which is one of the two military departments of the Government of Saudi Arabia, together with the Ministry of National Guard. History The modern Army of Arabia has its roots in the Saudi state, which was dating to 1744, and is considered to be the birth year of the Saudi army. As of 1901 the ground forces was re-established as a separate branch of the armed forces with the starting of the modern Saudi state. and it is considered the oldest branches of the Saudi Arabia's military. Conscription lasted up until dissolved the War chancellery. Historically, the MoW was created to unify the armies of the state under one military power. It was existed until 1933, when it was renamed ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Fiberglass
Fiberglass (American English) or fibreglass (Commonwealth English) is a common type of fiber-reinforced plastic using glass fiber. The fibers may be randomly arranged, flattened into a sheet called a chopped strand mat, or woven into glass cloth. The plastic matrix may be a thermoset polymer matrix—most often based on thermosetting polymers such as epoxy, polyester resin, or vinyl ester resin—or a thermoplastic. Cheaper and more flexible than carbon fiber, it is stronger than many metals by weight, non- magnetic, non-conductive, transparent to electromagnetic radiation, can be molded into complex shapes, and is chemically inert under many circumstances. Applications include aircraft, boats, automobiles, bath tubs and enclosures, swimming pools, hot tubs, septic tanks, water tanks, roofing, pipes, cladding, orthopedic casts, surfboards, and external door skins. Other common names for fiberglass are glass-reinforced plastic (GRP), glass-fiber reinforced plastic (GFRP) or GF ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Carbon-fiber-reinforced Polymer
Carbon fiber-reinforced polymers (American English), carbon-fibre-reinforced polymers (Commonwealth English), carbon-fiber-reinforced plastics, carbon-fiber reinforced-thermoplastic (CFRP, CRP, CFRTP), also known as carbon fiber, carbon composite, or just carbon, are extremely strong and light fiber-reinforced plastics that contain carbon fibers. CFRPs can be expensive to produce, but are commonly used wherever high strength-to-weight ratio and stiffness (rigidity) are required, such as aerospace, superstructures of ships, automotive, civil engineering, sports equipment, and an increasing number of consumer and technical applications. The binding polymer is often a thermoset resin such as epoxy, but other thermoset or thermoplastic polymers, such as polyester, vinyl ester, or nylon, are sometimes used. The properties of the final CFRP product can be affected by the type of additives introduced to the binding matrix (resin). The most common additive is silica, but other addit ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Stealth Aircraft
Stealth aircraft are designed to avoid detection using a variety of technologies that reduce reflection/emission of radar, infrared, visible light, radio frequency (RF) spectrum, and audio, collectively known as stealth technology. The F-117 Nighthawk was the first operational aircraft specifically designed around stealth technology. Other examples of stealth aircraft include the B-2 Spirit, the B-21 Raider, the F-22 Raptor, the F-35 Lightning II, the Chengdu J-20, and the Sukhoi Su-57. While no aircraft is totally invisible to radar, stealth aircraft make it more difficult for conventional radar to detect or track the aircraft effectively, increasing the odds of an aircraft successfully avoiding detection by enemy radar and/or avoiding being successfully targeted by radar guided weapons. Stealth is the combination of passive low observable (LO) features and active emitters such as low-probability-of-intercept radars, radios and laser designators. These are usually combined ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Aerial Photography
Aerial photography (or airborne imagery) is the taking of photographs from an aircraft or other airborne platforms. When taking motion pictures, it is also known as aerial videography. Platforms for aerial photography include fixed-wing aircraft, helicopters, unmanned aerial vehicles (UAVs or "drones"), balloons, blimps and dirigibles, rockets, pigeons, kites, or using action cameras while skydiving or wingsuiting. Handheld cameras may be manually operated by the photographer, while mounted cameras are usually remotely operated or triggered automatically. Aerial photography typically refers specifically to bird's-eye view images that focus on landscapes and surface objects, and should not be confused with air-to-air photography, where one or more aircraft are used as chase planes that "chase" and photograph other aircraft in flight. Elevated photography can also produce bird's-eye images closely resembling aerial photography (despite not actually being aerial shots) when ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Turki Bin Saud Bin Mohammed
Chagatai (چغتای, ''Čaġatāy''), also known as ''Turki'', Eastern Turkic, or Chagatai Turkic (''Čaġatāy türkīsi''), is an extinct Turkic literary language that was once widely spoken across Central Asia and remained the shared literary language there until the early 20th century. It was used across a wide geographic area including parts of modern-day Uzbekistan, Xinjiang, Kazakhstan, and Kyrgyzstan. Literary Chagatai is the predecessor of the modern Karluk branch of Turkic languages, which include Uzbek and Uyghur. Turkmen, which is not within the Karluk branch but in the Oghuz branch of Turkic languages, had been heavily influenced by Chagatai for centuries. Ali-Shir Nava'i was the greatest representative of Chagatai literature. Chagatai literature is still studied in modern Uzbekistan, where the language is seen as the predecessor and the direct ancestor of modern Uzbek and the literature is regarded as part of the national heritage of Uzbekistan. Etymol ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ka Band
The Ka band (pronounced as either "kay-ay band" or "ka band") is a portion of the microwave part of the electromagnetic spectrum defined as frequencies in the range 26.5–40 gigahertz (GHz), i.e. wavelengths from slightly over one centimeter down to 7.5 millimeters. The band is called Ka, short for "K-above" because it is the upper part of the original NATO K band, which was split into three bands because of the presence of the atmospheric water vapor resonance peak at 22.24 GHz (1.35 cm), which made the center unusable for long range transmission. The 30/20 GHz band is used in communications satellite uplinks in either the 27.5 GHz and 31 GHz bands, and high-resolution, close-range targeting radars aboard military airplanes. Some frequencies in this radio band are used for vehicle speed detection by law enforcement. The Kepler Mission used this frequency range to downlink the scientific data collected by the space telescope. The designation "Ka ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
