|
Project 621 (rocket)
Project 621 was a project by the Dornier company with the intention of producing a sounding rocket with liquid-fuel propulsion. It was to use a paraglider system to return safely to earth for later re-use. It had a wet mass of 240 kg (520 lb) and a dry mass of 74 kg. The rocket itself was never launched. The rocket of the project was supposed to reach an apogee of eighty kilometers, and then return from a height of forty kilometers, spiraling to the ground. In 1965, multiple drop tests of the paraglider system on the rocket test area in Salto di Quirra in Sardinia Sardinia ( ; it, Sardegna, label=Italian, Corsican and Tabarchino ; sc, Sardigna , sdc, Sardhigna; french: Sardaigne; sdn, Saldigna; ca, Sardenya, label=Algherese and Catalan) is the second-largest island in the Mediterranean Sea, after ... was performed. The project was halted in 1966, after large problems occurred regarding the choice of a suitable wing material (textile wings could not handle the loads, wh ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Claudius Dornier
Claude (Claudius) Honoré Désiré Dornier (born in Kempten (Allgäu), Kempten im Allgäu on 14 May 1884 – 5 December 1969) was a France–Germany relations, German-French airplane designer and founder of Dornier GmbH. His notable designs include the 12-engine Dornier Do X flying boat, for decades the world's largest and most powerful airplane. He also made several other successful aircraft. Biography The son of a France, French wine importer and his German wife, Claude Dornier was born in Bavaria where he grew up and attended school, with science being his chief interest. Dornier then moved to Munich, where he graduated in 1907 from the Technical University of Munich, Technical University. As a young engineer, Dornier first worked on Strength of materials, strength calculations at the Nagel Engineering Works in Karlsruhe. In 1910 he joined Luftschiffbau Zeppelin in Friedrichshafen on the Bodensee, where his abilities quickly attracted Count Ferdinand von Zeppelin's attent ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sounding Rocket
A sounding rocket or rocketsonde, sometimes called a research rocket or a suborbital rocket, is an instrument-carrying rocket designed to take measurements and perform scientific experiments during its sub-orbital flight. The rockets are used to launch instruments from 48 to 145 km (30 to 90 miles) above the surface of the Earth, the altitude generally between weather balloons and satellites; the maximum altitude for balloons is about 40 km (25 miles) and the minimum for satellites is approximately 121 km (75 miles). Certain sounding rockets have an apogee between 1,000 and 1,500 km (620 and 930 miles), such as the Black Brant X and XII, which is the maximum apogee of their class. Sounding rockets often use military surplus rocket motors. NASA routinely flies the Terrier Mk 70 boosted Improved Orion, lifting 270–450-kg (600–1,000-pound) payloads into the exoatmospheric region between 97 and 201 km (60 and 125 miles). Etymology The origin of the term ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Paragliding
Paragliding is the recreational and competitive adventure sport of flying paragliders: lightweight, free-flying, foot-launched glider aircraft with no rigid primary structure. The pilot sits in a harness or lies supine in a cocoon-like 'pod' suspended below a fabric wing. Wing shape is maintained by the suspension lines, the pressure of air entering vents in the front of the wing, and the aerodynamic forces of the air flowing over the outside. Despite not using an engine, paraglider flights can last many hours and cover many hundreds of kilometres, though flights of one to two hours and covering some tens of kilometres are more the norm. By skillful exploitation of sources of lift, the pilot may gain height, often climbing to altitudes of a few thousand metres. History In 1966, Canadian Domina Jalbert was granted a patent for a ''multi-cell wing type aerial device—''"a wing having a flexible canopy constituting an upper skin and with a plurality of longitudinally extend ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rocket
A rocket (from it, rocchetto, , bobbin/spool) is a vehicle that uses jet propulsion to accelerate without using the surrounding air. A rocket engine produces thrust by reaction to exhaust expelled at high speed. Rocket engines work entirely from propellant carried within the vehicle; therefore a rocket can fly in the vacuum of space. Rockets work more efficiently in a vacuum and incur a loss of thrust due to the opposing pressure of the atmosphere. Multistage rockets are capable of attaining escape velocity from Earth and therefore can achieve unlimited maximum altitude. Compared with airbreathing engines, rockets are lightweight and powerful and capable of generating large accelerations. To control their flight, rockets rely on momentum, airfoils, auxiliary reaction engines, gimballed thrust, momentum wheels, deflection of the exhaust stream, propellant flow, spin, or gravity. Rockets for military and recreational uses date back to at least 13th-century China. Signific ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Apogee
An apsis (; ) is the farthest or nearest point in the orbit of a planetary body about its primary body. For example, the apsides of the Earth are called the aphelion and perihelion. General description There are two apsides in any elliptic orbit. The name for each apsis is created from the prefixes ''ap-'', ''apo-'' (), or ''peri-'' (), each referring to the farthest and closest point to the primary body the affixing necessary suffix that describes the primary body in the orbit. In this case, the suffix for Earth is ''-gee'', so the apsides' names are ''apogee'' and ''perigee''. For the Sun, its suffix is ''-helion'', so the names are ''aphelion'' and ''perihelion''. According to Newton's laws of motion, all periodic orbits are ellipses. The barycenter of the two bodies may lie well within the bigger body—e.g., the Earth–Moon barycenter is about 75% of the way from Earth's center to its surface. If, compared to the larger mass, the smaller mass is negligible (e.g., f ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Salto Di Quirra
Salto di Quirra is a restricted weapons testing range and rocket launching site near Perdasdefogu on Sardinia. It is the largest military range in Italy, composed of 12000 hectares of land owned by the Italian Ministry of Defence and one of the largest in operation within the European Union. Birth defects and cancer in the area have been blamed on weaponry used at the site. Sardinia hosts about 60% of Italian military ranges and together with Friuli-Venezia Giulia is one of the most militarized regions of Italy. Salto di Quirra primarily launches military rockets, but civilian rockets, such as the Skylark (rocket), Skylark, have occasionally been launched for the study of the upper atmosphere. The Salto di Quirra range is located close to the town of Perdasdefogu in a mountainous zone at the south-east of Sardinia. It is an inter-arm range, currently placed under the authority of the Italian Air Force. Its main activity deals with the tests of various types of missiles used or ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sardinia
Sardinia ( ; it, Sardegna, label=Italian, Corsican and Tabarchino ; sc, Sardigna , sdc, Sardhigna; french: Sardaigne; sdn, Saldigna; ca, Sardenya, label=Algherese and Catalan) is the second-largest island in the Mediterranean Sea, after Sicily, and one of the 20 regions of Italy. It is located west of the Italian Peninsula, north of Tunisia and immediately south of the French island of Corsica. It is one of the five Italian regions with some degree of domestic autonomy being granted by a special statute. Its official name, Autonomous Region of Sardinia, is bilingual in Italian and Sardinian: / . It is divided into four provinces and a metropolitan city. The capital of the region of Sardinia — and its largest city — is Cagliari. Sardinia's indigenous language and Algherese Catalan are referred to by both the regional and national law as two of Italy's twelve officially recognized linguistic minorities, albeit gravely endangered, while the regional law provides ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
.png "Click for more on -> Apogee")
