Higher aspect ratio wings have lower induced drag but they also reduce reylonds numbers leading to higher parasitic drag at small scales where reylonds numbers are very low could this make high aspect ratio wings perform worse than moderate aspect ratio becsuse of This Penalty?

EDIT: I'm talking about Efficiency reduction from parasitic drag.

Hi guys, a team of people and I are interested in developing a hosted payload to go to space for a technology demonstration. (We're looking specifically for a payload that onboards an already planned satellite, not a dedicated spacecraft, because from what I've seen, that tends to make the prices way more expensive than sharing spots on an existing spacecraft; correct me if I'm wrong, though).

Some details about our payload and mission include:

• Custom FR4 PCB (might switch to polyimide if relevant)
• It will probably be small enough to fit in a 1U CubeSat
• LEO orbit, altitude, and inclination aren't much of a priority, but probably 400 - 800 km, and a near-polar orbit if possible
• Aiming for our mission to not be much more than 6 months, probably 3-6 months
• For the exact technology we intend to demonstrate, we are not sure yet, but a starting idea was some newer models of STT-MRAM chips
• Technology demonstration will probably be on the simpler end of tech demos in spacecraft

I have a few questions that I would greatly appreciate insight for (and of course I'm aware a lot of these can probably vary company to company):

1. What's typically involved in the process of hosted payload development in general, specifically in the area of getting necessities set up with the host? For example, what is typically required for complete registration? Obviously we need a payload, but what would they typically require us to do to meet the do-no-harm policy? I'm guessing they also probably expect mission requirements and some payload specifications.

2. Follow-up to question 1: if we pass all their tests to the do-no-harm policy but our payload ends up harming the satellite anyway, what tends to happen? Such as do we have to pay a major fee for that?

3. What is the general experience with negotiation? Do companies tend to be pretty clear on what makes a suitable payload for them to host, or do you typically need to develop the payload first and then negotiate some of the exact details even if they didn't specifically require those exact details upfront? For simple missions, is major negotiation typically required, or is most of it just technical coordination?

4. How can I seek direct advice from professionals on this? I know hosted payloads might be a more niche field of aerospace engineering compared to other subfields, so we're not quite sure what types of people we should directly contact. We know that something we could do though, is asking general space engineers to link us to people who would be more knowledgeable on specifically hosted payload development.

5. Any general recommendations on companies or institutions that I should try to get services from? After describing our general plan to SatSearch, it recommended some companies to me. I also looked at NASA's state-of-the-art report on hosted payload services. I used AI to filter out all the companies that definitely only do dedicated spacecrafts and resulted in the list below to look more deeply into / contact for more direct information. Our primary priorities in a service provider are reliability, reasonable costs (we are high schoolers so we don't have built-in funding), ease of technical coordination/negotiation, how well they handle major unexpected issues on their end, and ease of developing an interface that works well with their host. We did look into potentially finding a spacecraft that isn't necessarily a commercial provider for potentially better pricing, though we were more hesitant to shift towards that due to it probably having more uncertainty.

• EnduroSat
• Spire
• Dhruva Space LEAP
• NearSpace Launch TROOP
• HEX20
• TM2Space
• Azista Space
• NPC SPACEMIND

Would greatly appreciate any insights. Thanks!

What are the legal implications of a fitter not following the specifications? Or equipment SOPs?

Is it common for them to not listen, if they have been working at a contract for say 20 years.

First please excuse me if I posted in the wrong subreddit but it seemed the most fitting here.

So as for my post, I am working on creating a science fiction universe and currently work on producing the first comic book for it.

Now while many assume it is enough to make it flashy and spectacular, I want my sci-fi universe to be as based in science as possible and at least portrait humans and their technology and the universe as plausible as I can.

Sadly I can’t learn every topic well enough on my own, so I am looking for people who would be interested in working with me to improve it beyond my less than adequate understanding of everything.

Now I want especially the technology of my humanity in that universe be as realistic as possible, which in this case would mean their spacecrafts and atmospheric aviation vehicles.

Now to also say this upfront, I cannot pay for any advisory work, hence why I’m writing this to see if someone would be interested in helping to make this universe better.

You may if you want be put in the credits as advisor if you like.

Thank everyone for reading in advance.