|
Space Programme Of Pakistan
The Space & Upper Atmosphere Research Commission, commonly referred to as SUPARCO, is the national space agency of Pakistan. The agency, originally established in 1961 as a committee in Karachi, became an independent commission in 1981. Its initial objective was to learn rocketry and high altitude research from the United States, which ultimately led to the development of a national satellite program. This culminated in the successful launch of Pakistan's first satellite from China in 1990. The agency was also an early participant in the rocket development program launched by the Ministry of Defence of Pakistan. The agency leads the National Space Program (NSP) and maintains the orbital operations of its satellites with support facilities throughout the country. SUPARCO also serves as the secretariat for Pakistan Space Activities Regulatory Board (PSARB) which was established in February 2024 under the National Command Authority to regulate all space-related activities i ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Karachi
Karachi is the capital city of the Administrative units of Pakistan, province of Sindh, Pakistan. It is the List of cities in Pakistan by population, largest city in Pakistan and 12th List of largest cities, largest in the world, with a population of over 20 million. It is situated at the Geography of Pakistan, southern tip of the country along the Arabian Sea coast and formerly served as the Federal Capital Territory (Karachi), country's capital from 1947 to 1959. Ranked as a Global city, beta-global city, it is Pakistan's premier industrial and financial centre, with an estimated GDP of over $200 billion (Purchasing power parity, PPP) . Karachi is a metropolitan city and is considered Pakistan's most cosmopolitan city, and among the country's most linguistically, ethnically, and religiously diverse regions, as well as one of the country's most progressive and socially liberal cities. The region has been inhabited for millennia, but the city was formally founded as the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Orbital Station-keeping
In astrodynamics, orbital station-keeping is keeping a spacecraft at a fixed distance from another spacecraft or celestial body. It requires a series of orbital maneuvers made with thruster burns to keep the active craft in the same orbit as its target. For many low Earth orbit satellites, the effects of non-Keplerian forces, i.e. the deviations of the gravitational force of the Earth from that of a homogeneous sphere, gravitational forces from Sun/Moon, solar radiation pressure and air drag, must be counteracted. For spacecraft in a halo orbit around a Lagrange point, station-keeping is even more fundamental, as such an orbit is unstable; without an active control with thruster burns, the smallest deviation in position or velocity would result in the spacecraft leaving orbit completely. Perturbations The deviation of Earth's gravity field from that of a homogeneous sphere and gravitational forces from the Sun and Moon will in general perturb the orbital plane. For a Sun-syn ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Wallops Flight Facility
Wallops Flight Facility (WFF) is a rocket launch site on Wallops Island on the Eastern Shore of Virginia, United States, just east of the Delmarva Peninsula and approximately north-northeast of Norfolk, VA, Norfolk. The facility is operated by the Goddard Space Flight Center in Greenbelt, Maryland, and primarily serves to support science and exploration missions for NASA and other Federal government of the United States, federal agencies. WFF includes an extensively instrumented range to support launches of more than a dozen types of sounding rockets; small expendable suborbital and orbital rockets; high-altitude balloon flights carrying scientific instruments for atmospheric and astronomical research; and, using its Research Airport, flight tests of aeronautical research aircraft, including unmanned aerial vehicles. There have been over 16,000 launches from the rocket testing range at Wallops since its founding in 1945 in the quest for information on the flight characteristi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
