Can the Mariner 3 (I should have used Mariner 4 for an example but we'll stick to 3 which also has the passive stabilization vanes)
Here, there is an exemple of 2 (identical) spacecrafts.
The whole sentence in parenthesis add nothing to the question
=> Remove it
The question actually has nothing to do with Mariner
=> Use "A spacecraft with solar vanes, similar to mariner 3" or similar sentence
be tethered by a long pole or line
We enter the domain of science fiction. This is fine per see, but makes it hard to narrow down an answer, since it assume we have technologies still unknown to us.
to utilize the gravity gradient
The tether and gravity gradient are two things that have little in common, and not directly related, or applicable to each other.
and radiation from it's vanes to reduce the need of propellants to maintain orientation to the Earth?
- You narrowed down the subject of your question to one single effect. This is good.
The long pole would have solar vanes
- Why have solar vanes both on the spacecraft and the poles ?
This add unnecessary complexity to the question
=> Try to make your problem simpler, not more complicated, especially when it is hypothetical.
=> Eventually, add it in a second part. Ex "Can a spacecraft be able to do A? Would B help ?"
at either end
- Either end ? Surely you don't mean to put solar vanes on the ground (the other end of the cable)
that can use gravity
- Solar vanes function with solar pressure, not gravity. This makes no sense
to adjust altitude
- Surely you meant attitude (orientation) ?
- Solar vanes and gravity gradient are meant to control the orientation, not the positon. Once again you are mixing up concepts
by turning with against or solo up down and around the pole
- This sentence makes no sense. Always try to make simple sentence. Ex: "By moving around the pole"
to change the way radiation hits the vanes
- The vanes of Mariner 3 where actuated, there is no need to move the spacraft around (or was it the poles with the vanes?)
while creating the imbalance you mention
- Who is you ? In this context, name the subject.
Doing this should be able to create lift
and change orientation eliminating the need for propellants.
- Do not mix concepts if not well understood
- Do not try to add additional parameters
- Do re read yourself. Multiple times
- After an edit, re read the whole question
- Make sure you understand each concepts separately
- Use appropriate tenses, and conditional form when appropriate
- Avoid completely changing a question. Sometime creating a new one is better.
- Simplify your questions; eventually adding complexity in follow ups
- Do not add off topic/non relevant informations (eg: vanes move by magnetic [...]) the fact that they move with magnetic forces is irrelevant to the question)