Uniktour Space : orbital space flight agency

orbital space flight agency An orbital space flight is a space flight where the spacecraft enters into orbital, usually meaning low earth orbit. The expression "orbital space flight" is mostly used to distinguish from sub-orbital space flights. Orbital space flight from earth is normally achieved by large rockets that are capable of accelerating from rest to about 11 km/s. The orbital space flight from our agency program is intended for persons in generally good health, 18 years of age or older and without physical disabilities. Uniktour Space : orbital space flight agency


	Experience
	Orbital flight Vs Suborbital flight
	Spaceport
	The spacecraft
	Model XP specifications
		Model XP sub-system
		Technologies XP
		Conceptual designs
	Flight plan
	Fares

Suborbital flight / Orbital flight Vs Suborbital flight

Is defined as the trajectory of a spacecraft which is submitted to the attraction of a main body and meets with the balistic surface of such, thus unabling it to complete an orbit (http://fr.wiktionary.org/wiki/suborbital).

Orbital basic notion:
An orbit is the trajectory defined as a body traveling around another body with the effect of gravity. A classic example is with the solar system where Earth, planets, asteroids and comets are in orbit around the Sun, same as moons are in orbit around the planets. Nowadays, many artificial satellites are in orbit around the Earth.

It is impossible to position a body in orbit at a lower altitude around the Earth since the friction of the air on the satellite stops it from maintaining momentum. We call this effect ‘’atmospheric slowdown’’. On the other hand, the Moon, which has no atmosphere, can sustain a body in orbit at a lower altitude and this, barely higher than Mount Everest.

A sub-orbital or suborbital flight is the trajectory of a spacecraft moving at a suborbital speed, less than the one required to maintain orbit. And we also use the term ‘’suborbital’’ because the maximum speed of 3500 km/h is insufficient to maintain orbit. (we would need to go 10 times this speed to obtain one complete orbit around the Earth).

Orbital or suborbital flight?
If the velocity given to the object (spacecraft) is insufficient, the insertion target is not obtained and the object falls without obtaining orbit. (its weight exceeds centrifugal force). This is where we mention suborbital flight. This suborbital flight allows however to reach the frontier of space, defined by international treaties, i.e. an altitude of 100 km.

Satellization speed
We consider that a spacecraft is submitted to two strengths:

1. The weight W which attracts it to the center of the Earth.
2. The centrifugal force F which tends to push it away from Earth.

When the shuttle performs a circular orbit around the Earth, the centrifugal force and the weight compensate equally. The shuttle then remains in constant altitude. It is an orbital flight.

To remain in orbit, we require sufficient speed and altitude. For an altitude of 300 km, (low orbit), the satellization speed is 27,800 km/h. In order to obtain orbital flight, it is necessary to acquire altitude and satellization speed to obtain insertion target for orbit!

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