Support Refhub: Together for Knowledge and Culture

Dear friends,

As you know, Refhub.ir has always been a valuable resource for accessing free and legal books, striving to make knowledge and culture available to everyone. However, due to the current situation and the ongoing war between Iran and Israel, we are facing significant challenges in maintaining our infrastructure and services.

Unfortunately, with the onset of this conflict, our revenue streams have been severely impacted, and we can no longer cover the costs of servers, developers, and storage space. We need your support to continue our activities and develop a free and efficient AI-powered e-reader for you.

To overcome this crisis, we need to raise approximately $5,000. Every user can help us with a minimum of just $1. If we are unable to gather this amount within the next two months, we will be forced to shut down our servers permanently.

Your contributions can make a significant difference in helping us get through this difficult time and continue to serve you. Your support means the world to us, and every donation, big or small, can have a significant impact on our ability to continue our mission.

You can help us through the cryptocurrency payment gateway available on our website. Every step you take is a step towards expanding knowledge and culture.

Thank you so much for your support,

The Refhub Team

Donate Now

Spacecraft Propulsion

4.3

بر اساس نظر کاربران

شما میتونید سوالاتتون در باره کتاب رو از هوش مصنوعیش بعد از ورود بپرسید
هر دانلود یا پرسش از هوش مصنوعی 2 امتیاز لازم دارد، برای بدست آوردن امتیاز رایگان، به صفحه ی راهنمای امتیازات سر بزنید و یک سری کار ارزشمند انجام بدین

کتاب های مرتبط:

This valuable textbook describes those subjects important to conceptual, competitive stages of propulsion design and emphasizes the tools needed for this process. The text begins with a discussion of the history of propulsion and outlines various propulsion system types to be discussed such as cold gas systems, monopropellant systems, bipropellant systems, and solid systems. Included with the text is PRO: AIAA Propulsion Design Software, which allows the reader to proceed directly from understanding into professional work and provides the accuracy, speed, and convenience of personal computing. Also, the software contains conversion routines that make it easy to move back and forth between English and metric systems. A recommended text for professionals and students of propulsion. In order to obtain the AIAA Propulsion Design Software please contact AIAA Customer Service at custserv@aiaa.org. They will give you instructions on how to download the software. System Requirements: PC-compatible (486 or higher), 8 Mb RAM, 20 Mb hard drive space available.

دانلود رایگان مستقیم

برای دانلود رایگان این کتاب و هزاران کتاب دیگه همین حالا عضو بشین

برای خواندن این کتاب باید نرم افزار PDF Reader را دانلود کنید Foxit Reader

نویسندگان:


نظرات:


4.3

بر اساس 0 نظر کاربران