Thursday, November 15, 2018

Fill Drain how to make safe...

One way to fill a tank... (and how I've filled every rocket tank to date)
Is just put a removable fitting on the top of the tank and pour in the propellant.
Its real hard to make a system lighter than just a single AN cap.

This has several problems...
  • It does not scale, in a Otrag vehilce you might have 128+ tanks to fill.
  • On a biprop vehicle, once one of the propellants is loaded loading the other propellant becomes a hazard.
  • Its very difficult to precisely fill to exact levels.
  • It does not help you drain after an abort scenario.

    So I'd like to do remote fill and drain on the vehicle without adding a bunch of weight...
    Here is one possible scheme that can be done with a single tank penetration.










At the expense of wasign some propellant it ensures the system is filled to a precise level (the level of the bottom of the dip tube, and only requires one tank penetration.

It has the added advaltage that if you use the valve RV1 to vent the tank in an in flight abort, it does nto vent the all the propellant, only the pressurization gas.... With Lox its not an issue to dump propellant while in the air, with H2O2 dumping in the air can start a large area brush fire.








24 comments:

Ben Brockert said...

Ground abort, yes, mostly ullage gas will come out. In flight the liquid will not be settled at the bottom of the tank in most abort cases, so some liquid is still going to come out the vent.

Unknown said...

So the OTRAG design is modular. Can each tank be assembly line filled then attached?

Paul Breed said...

Don't want to handle prefilled tank, too hazardous....
Also tank is likely not strong enough un-presurized.

Ben, actually in an inflight abort all propellant is probably flung forward fairly quickly and the vent tube being in the half way center of the tank could really only ever have propellant in zero G, any other time only passing blobs of propellant..


Unknown said...
This comment has been removed by a blog administrator.
Mary robinson said...

I think it is good way to fill a tank easily. I have seen other ideas somewhere on Edu birdie but i couldn't understand that.

David said...

What software did you use to draw these diagrams?

sanchesginger@gmail.com said...

Your blog is incredibly informative, https://resumeperk.com/blog/how-to-build-a-lasting-career-in-finance-10-expert-tips because you clearly state a lot of useful data that you can use to become more professional.

receive a perfect review curriculum said...

At first sight it all seemed very complicated to me and I couldn't understand all these functions. I had to find more information in Internet and then read this post again.

youtubecomactivate said...

We have to know the methods you can easy way to Activate YouTube doing YouTube.com/activate. If you are facing issues with YouTube, like how to connect YouTube on your TV, mobile or other devices contact us. Google has provided us the enjoyment, and by YouTube activate, you watch here latest videos, songs, or web series, etc.

Okseoabhinav said...

The information you are providing that is really good. Thank for making and spending your precious time for this useful information. Thanks again and keep it up. https://www.akgvg.com

Ragani Tiwari said...

Brilliant Information. I appreciate your skills and your knowledge. Thanks for sharing this information.
Are you looking for fine-tuned Rolling Mill Drives & Automation control solutions to increase process stability, reduce downtime, and ensure consistent product quality? Don't need to go anywhere. The Akshi automation team brings together a rare combination of long production process expertise and electrical device knowledge to ensure that our technology solutions boost mill efficiency, ensure reliable production, and deliver premium product quality.

cally jesper said...

When you are dealing with water damage, immediate action is crucial. HAND IN HAND REMODEL AND REPAIR LLC professionals respond immediately and use advanced equipment and techniques to remove the water quickly by Water Damage Repair. They closely monitor and document the drying process to verify your property is dried properly and thoroughly.

JohnMillar said...

Whether you need help with a quick repair or assistance with a major project, you can count on the Affordable Riverside Electrician Colorado or surrounding areas to get the job done. At Todd Peters Electric, we service all of Riverside County, offering reliable prices, industry-leading finance options, a range of, and the guarantee to respond to your home in 60-90 minutes after you place your call.

Online Great Game! said...

I cannot thank you enough for the article.Really thank you! Great.


스포츠토토티비
스포츠중계
해외야구중계

Online Great Game! said...

Our credit fix administrations work to fix past credit errors and confirm credit report precision. Converse with a credit fix master today!


토토사이트
토토

فروش فوری سیم کارت said...

Oh, a storm is threat'ning My very life today If I don't get some shelter Oh yeah, I'm gonna fade away.



خرید سیم کارت 0912

nasethoasl said...

anchor YSL Dolabuy read view publisher site my blog my company

indianammpanel4u said...

Indiansmm4u is the fastest and most affordable SMM Panel for all your social media needs. Our SMM panel can help you to get 100% real social media followers. Indiansmm4u services provide all types of social media marketing services to users at very reasonable prices. We provide world-class SMM services that are reliable, quick, and cost-effective. For more information, please call our toll-free number or visit our website.

spray machine price said...

Hello!!

Useful blog. Thank you for sharing with us.

Spray machine price

Anonymous said...

Project Management Assignment Help from Finest Writers in the Field.

Online Project Management Assignment Help
to undergraduate and postgraduate students always provides assignments within the time or before the deadline. Deadlines are as important to the experts as you.

visit us at- Archlite Assignment Help

Yabrood said...

The above information is very clear, easy to read and presented in a professional manner using bullet points and all caps to highlight the important information. ....Thanks from bus Yabrood
Also Check

waterproofing dubai
waterproofing companies in dubai

Slot เว็บ ตรง said...

Slot เว็บ ตรง มองดูไม่เสริมเติมกว่า PG SLOT 2022 เว็บของพวกเรา นําเสนอเกมสล็อตที่นานัปการซึ่งจะทําให้ท่านเพลินใจได้นานหลายชั่วโมง นี่เป็นคุณประโยชน์บางประการของการเล่นเกม

Kindle Avenue said...

Excellent share for all visitors: Kindle Avenue

Unknown said...

Your insights into tank filling methods for rockets provide a fascinating glimpse into the complexities of propellant loading. The idea of using a removable fitting on the top of the tank for pouring in the propellant is both ingenious and practical, especially considering the challenges of scalability, bipropellant loading hazards, and precision filling levels. Your proposed scheme for remote fill and drain with a single tank penetration is particularly intriguing, addressing issues like precise level filling and potential hazards during an abort scenario. The balance between efficiency and safety in rocket design is a captivating subject, and your exploration of these considerations adds valuable depth to the conversation. Looking forward to more insights into rocketry innovations!" Read the full article.