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ChrisR's user avatar
ChrisR's user avatar
ChrisR
  • Member for 10 years, 4 months
  • Last seen more than a month ago
5 votes
Accepted

Which method STK uses to compute Umbra or Penumbra time intervals?

5 votes

Powered Explicit Guidance - Why wouldn't it be used?

1 vote

Optimal numerical method to solve BVP for optimal low thrust control

2 votes

TT-TDB with SPICE from ephemerides kernels as 'de440t.bsp'

8 votes

GN&C free / open source softwares suggestions

0 votes

How to propagate satellite to orbit intersection (relative node) in GMAT?

3 votes

State vector conversion when changing central body

2 votes

Satellite Revisit Time Analysis

4 votes

Different/better ways to calculate the shadow region passage of the satellite and the effect of orbital elements, other than shadow cone technique?

8 votes

How can we determine the most appropriate central body for orbit propagation?

6 votes

Precise Orbit Determination (POD) vs GNSS accuracy; seeking references

11 votes

Has ion propulsion ever been used in a deep space trajectory correction maneuver proper?

2 votes

How to calculate time needed for spacecraft to travel a given number of meters in elliptical orbit or hyperbolic trajectory?

1 vote

Wrong position during orbit propagation in Unity

4 votes

Access to Chebyshev coefficients from JPL ephemerides

2 votes
Accepted

How would you convert keplerian orbital elments into cartesain vectors with quaternions?

1 vote
Accepted

What are the differences (if any) between the techniques of range-rate and delay-doppler measurements?

2 votes

Can mascons have Lagrange-like points? In principle? At the Moon?

2 votes
Accepted

Rotation matrix / coordinate transformation of maneuver parameters from Prograde, Normal, Radial to Cartesian XYZ?

2 votes

How much more likely is it for a colony on Mars to receive a damaging meteorite hit than a similar structure on Earth?

1 vote
Accepted

How to model payload deployment in General Mission Analysis Tool

2 votes

Obtaining orbital parameters of a closed orbit given the characteristics of the arrival hyperbolic orbit

1 vote
Accepted

Given an arrival date, is there a way to calculate the declination and right ascension of the arrival asymptote into Mars?

2 votes

GMAT code -- Change animation speed

3 votes

Create a sensor in STK

3 votes
Accepted

How many cubesat U's is CAPSTONE really?

3 votes

How to design a lunar flyby trajectory in GMAT?

1 vote

Attitude control with cold gas thrusters

2 votes

How to calculate the solar irradiance (flux) on Mars. But,measurments are made at Earth orbit or at 1 AU

19 votes

Most accurate attitude determination system in spacecraft?