Table 5 - uploaded by Matteo Ceriotti
Content may be subject to copyright.
Ariane 5 GTO characteristics

Ariane 5 GTO characteristics

Source publication
Conference Paper
Full-text available
This paper introduces the mission analysis and design of the Hevelius – Lunar Microsatellite Mission. The objective of the mission is to place at least three landers on the dark side of the Moon, to perform some scientific experiments. A microsatellite orbiter is required to support the net lander as data-relay to the Earth. Moreover, another space...

Contexts in source publication

Context 1
... 5 puts the spacecraft in a GTO parking orbit: this choice allows to reduce the fuel mass. The launcher imposes some constraints on the orbital elements, as shown in Table 5. The preferred parking orbit is GTO1 in Table 5 because, at this altitude, aerodynamic drag can be neglected and the periapsis longitude is close to the required one. ...
Context 2
... launcher imposes some constraints on the orbital elements, as shown in Table 5. The preferred parking orbit is GTO1 in Table 5 because, at this altitude, aerodynamic drag can be neglected and the periapsis longitude is close to the required one. The launch is scheduled in 2015, which has imposed some restrictions on the initial argument of the ascending node which has to be 180 °, the orbiter must wait 9.78 days (22 orbit periods) in GTO. ...

Similar publications

Conference Paper
The performance of a cooperative multiuser direct-sequence code-division multiple-access (DS-CDMA) system is analyzed in the asymptotic regime where both the spreading codes and the number of users grow large with the same ratio. A simple signal-to-interference-plus-noise ratio (SINR) expression is derived that is independent from the spreading cod...
Conference Paper
Full-text available
In this paper, we propose an analytical framework for analysis and design of cooperative spectrum sensing methods over correlated Log–Normal shadow–fading environments, when each cooperative user makes use of a simple Amplify and Forward (AF) relaying mechanism to send the detected signal to a sink node. We will show that the framework requires eff...
Conference Paper
Full-text available
In this paper, we study the asynchronous cooperative diversity schemes employing the amplify-and-forward (AF) protocols over the frequency-selective channel. We consider three time-division-multiple-access (TDMA) based cooperation protocols and derive the corresponding pairwise error probabilities (PEP). From our analysis, it is seen that of the pa...

Citations

... Some results are provided, based on a pre-phase A study of a similar mission to the Moon, called Hevelius [29]. Three landers, with miniaturized payloads, are supervised by a data relay microsatellite [6] (100 kg class) and are transported by a carrier from a LEO to the surface of the Moon, on which they perform a semi-hard landing. Moreover, the carrier has to map the lunar gravitational field and the landing site. ...
Conference Paper
Full-text available
This paper deals with the design and optimization of transfer trajectories from the Earth to the Moon. In particular, the requirements of the ESMO mission have been considered. This mission, currently in its phase A, is completely designed by European students: because of this, the budged must be kept as low as possible. The mission analysis has thus to focus on low-energy transfers, in order to obtain very low cost trajectories. Two different chemical transfers are considered: a trajectory through L1 lagrangian point, considering a restricted three body problem, and a more complex Belbruno transfer, taking into account the presence of the Sun. Some results, from another low-cost lunar mission, are presented.
Article
When a 3-body gravitational system is modeled using a rotating coordinate frame, interesting applications become apparent. This frame, otherwise known as a barycentric coordinate system, rotates about the system’s center of mass. Five unique points known as Lagrange points rotate with the system and have numerous applications for spacecraft operations. The goal of the Matlab GUI was to allow easy manipulation of trajectories in a barycentric coordinate system to achieve one of two end goals: a free-return trajectory or a Lagrange point rendezvous. Through graphical user input and an iterative solver, the GUI is capable of calculating and optimizing both of these trajectory types for all of our solar system’s planets. Its inputs are inertial state vectors, a date and time, and the number of propagation days. The user can then graphically manipulate the resulting trajectories by increasing the spacecraft velocity and propagation start time. It outputs the resulting ΔV vectors and magnitudes as well as a graphical representation of the desired orbital path.