Hello you guys,
I'm trying to implement the lift of a rotationally symmetric blunt reentry vehicle, with a shifted CoG.
It should be possible to flatten or steepen the flight route by rotating the vessel, thereby changing the position of the CoG and creating or reducing lift, depending on the CoG position and the direction the roll angle is applied.
The CoP is positioned aft the CoG and lies in the symmetry axis of the vessel.
In the API_Guide it is recommended to use at least two airfoils (LIFT_HORIZONTAL and LIFT_VERTICAL).
At the moment I positioned them both in the CoP and use the same aerodynamic parameters for both airfoils.
Probably not the best idea, or is it possible it could work out as I expect it to?
(unspecified question, but maybe it comes clear what I want to achieve over the next lines).
What I'm trying to understand right now is the look/physical appearance of the airfoils, when created.
1. Question:
Do they match the shape of the mesh, or do I have to imagine the shape more like a plane wing. And the LIFT_VERTICAL airfoil and LIFT_Horizontal airfoil are standing orthogonal on each other.
If it's not understandable, what I mean, I can provide some drawings if it would help.
2. Question
Do the airfoils interact?
Could it be possible that I produce more lift with just one airfoil in comparison with a second simulation run, with the exact same flight path and a second airfoil?
3. Question
If my CoG would be in the axis of symmetry. I would need to have a lifting force which is the same for every roll angle.
Is this achievable with two airfoils?
4. Question
Is this the best way to accomplish this?
Thank you very much in advance =)
Have a nice weekend
birdman
I'm trying to implement the lift of a rotationally symmetric blunt reentry vehicle, with a shifted CoG.
It should be possible to flatten or steepen the flight route by rotating the vessel, thereby changing the position of the CoG and creating or reducing lift, depending on the CoG position and the direction the roll angle is applied.
The CoP is positioned aft the CoG and lies in the symmetry axis of the vessel.
In the API_Guide it is recommended to use at least two airfoils (LIFT_HORIZONTAL and LIFT_VERTICAL).
At the moment I positioned them both in the CoP and use the same aerodynamic parameters for both airfoils.
Probably not the best idea, or is it possible it could work out as I expect it to?
(unspecified question, but maybe it comes clear what I want to achieve over the next lines).
What I'm trying to understand right now is the look/physical appearance of the airfoils, when created.
1. Question:
Do they match the shape of the mesh, or do I have to imagine the shape more like a plane wing. And the LIFT_VERTICAL airfoil and LIFT_Horizontal airfoil are standing orthogonal on each other.
If it's not understandable, what I mean, I can provide some drawings if it would help.
2. Question
Do the airfoils interact?
Could it be possible that I produce more lift with just one airfoil in comparison with a second simulation run, with the exact same flight path and a second airfoil?
3. Question
If my CoG would be in the axis of symmetry. I would need to have a lifting force which is the same for every roll angle.
Is this achievable with two airfoils?
4. Question
Is this the best way to accomplish this?
Thank you very much in advance =)
Have a nice weekend
birdman