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1

To answer your question, both conditions are satisfied. Yes it is best (most efficient delta-v wise) to perform a maneuver at the line of nodes (at the equator). It is also a characteristic of GEO orbits that the solar gravity interacts with a equatorial (GEO) orbit to drive the line of nodes to the 90/270 line in the inertial frame. (the tilt of the earth ...


4

Despite this, no one thought of making the launch vehicle / its payload orbit around earth, even for one revolution till the Russians did it on 4th Oct. 1957. Why so? This is not the case. Both the Soviet Union and the United States were extremely interested in the capabilities that Nazi Germany had developed during World War II. Both attempted to capture (...


3

Getting to space is easy. Staying in space is hard. Staying in space is not about going up high. It is about going sideways really fast. From Navi Mumbai to Hyderabad is 600 km, space is only 100 km away. So, you are about 6× closer to space and about 200–300 km closer to the ISS than to Hyderabad, according to your profile. With a high-performance car, you ...


3

It's a matter of velocity. These rockets weren't capable of reaching Earth orbital velocity which is about 4.8 mi/s (7.7 km/s). Only at this velocity, when flying about parallel to the surface, the orbital perigee would no longer be within the Earth so that the craft would fall around the entire planet instead of falling onto the surface. V2 rockets for ...


4

In 1963 Project West Ford used a dispenser to place 480 million sub-satellites1 in orbit. 1Admittedly, very simple ones.


2

The Heavens-Above site can supply you with needed information. heavens-above.com -> Satellite database -> Select satellite whatever you want -> Orbit. Voila. And one more resource is Stuff in space, althouhg it shows only an inclination (from the needed parameters).


5

The elliptical orbits of the first satellites were intentional, and the only kind of orbit that could be achieved by these early rockets. Elliptical orbits with a low apogee can be reached by one almost continuous burn of the various stages of a rocket. To reach a circular orbit, it is either necessary to do a circularization burn after one half orbit to ...


2

Two satellites is never enough. In the picture below two satellites can cover the surfaces of Mars between the pairs of tangent lines enveloping each satellite, but a belt (shown in blue cutting through Mars) is left uncovered because it is outside the region between the pairs of tangents. On Mars or any other round body, you always need at least three ...


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