Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Nitrous oxide fuel blend monopropellants

A technology of nitrous oxide and propellants, applied in the direction of fuel, gas fuel, liquid carbon-containing fuel, etc.

Inactive Publication Date: 2010-10-06
FIRESTAR ENG
View PDF3 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This example strongly demonstrates the main disadvantages of binary propellants—they must be stored in separate tanks (and often at different temperature and / or pressure conditions), and they must typically be at high pressures and high flow rates at predetermined and a specific mix ratio delivered to the combustion chamber

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Nitrous oxide fuel blend monopropellants
  • Nitrous oxide fuel blend monopropellants
  • Nitrous oxide fuel blend monopropellants

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] The mixing of fuel and oxidizer must be done in a controlled, measured manner to ensure that the resulting unit propellant has the desired performance characteristics.

[0041] figure 2 An exemplary schematic diagram of an apparatus for producing a NOFB unit propellant blend is illustrated. Propeller performance depends on the propellant burned. For this reason, it is often important to precisely mix unit propellant blends. A special device can be used to mix high vapor pressure unit propellants. In fact, these components can be mixed in their vapor phases and condensed in separate vessels to form a high-density liquid unit propellant. The methods and apparatus listed below are for illustrative purposes and derivatives thereof are equally acceptable methods of production. In this embodiment, SW-#s designate general on / off valves, REG-#s designate pressure reducing regulators, and IS-#s are tank separation valves. All valves were initially closed with regulators fu...

Embodiment 2

[0043] Produce and test candidate fuel blends. The most promising blends were selected based on the following criteria: combustion and theoretical engine performance; propellant stability; equilibrium and non-equilibrium miscibility properties; burn limit, flame temperature, and exhaust chemistry of the engine design; Graph properties, and combustion reaction rates.

[0044] The unit propellants of the present invention are named in the following manner. "NOFB" stands for Nitrous Oxide Fuel Blend. The next number indicates the position in group C2, 1 being ethane, 2 being ethylene, and 3 being acetylene. The numbers that follow indicate the oxidizer to fuel ratio. Thus, "NOFB34" is nitrous oxide blended with acetylene at an oxidizer-to-fuel ratio of 4. Additional letters (a, b, c) after the oxidizer-to-fuel ratio numbers may be used to describe differences in blends. For example, NOFB34 blends may include small amounts of specific additives to improve the chemical degassi...

Embodiment 3

[0051] Except I spIn addition to performance, many other properties of unit propellants are generally considered desirable. Hydrazine has an OSHA human lethal exposure limit of approximately 50 ppm. Low and non-toxic chemical unit propellant formulations are required to mitigate the relatively high costs of ground handling and work with toxic unit propellant formulations. The NOFB unit propellant formulation of the claimed invention is non-toxic and classified as an asphyxiating agent - in this respect NOFB is similar to gasoline, and only at very high concentrations overexposure will displace breathable air, causing asphyxiation or in more severe In mild cases can cause temporary exposure symptoms such as headache and / or confusion. In any event, removal to supply fresh air will relieve symptoms of exposure. The NOFB unit propellant evaporates rapidly into the air allowing large concentrations of liquid to be easily removed from the splashdown. Also, where hydrazine and th...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

Compositions and methods herein provide monopropellants comprising nitrous oxide mixed with organic fuels in particular proportions creating stable, storable, monopropellants which demonstrate high ISP performance. Due to physical properties of the nitrous molecule, fuel / nitrous blends demonstrate high degrees of miscibility as well as excellent chemical stability. While the monopropellants are particularly well suited for use as propulsion propellants, they also lend themselves well to power generation in demanding situations where some specific cycle creates useable work and for providing gas pressure and / or heat for inflating deployable materials.

Description

[0001] Inventors: Greg Mungas, David Fisher, Chris Mungas, Benjamin Carryer. [0002] References to related applications [0003] This application claims priority to US Provisional Patent Application No. 60 / 986,991, filed November 9, 2007, entitled "Nitrous Oxide Fuel Blend and Monopropellants," the entire disclosure and teachings of which are expressly incorporated herein by reference. A statement about the research or development funded by the fund [0004] This invention was made in part with support under Subcontract No. 1265181 from California Institute of Technology Jet Propulsion Laboratory / NASA. The United States Government may have certain rights in this invention. Background technique [0005] Liquid-fueled rockets have better specific impulse (I sp ), and the ability to throttle, shut down, and restart. The main performance advantage of liquid propellants is the oxidizer. Several practical liquid oxidizers (liquid oxygen, nitrogen tetroxide, and hydrogen peroxi...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): C10L1/23
CPCC10L3/02C06D5/08C06B47/04
Inventor 格雷格·蒙加斯戴维·费希尔克里斯·蒙加斯本杰明·卡里耶
Owner FIRESTAR ENG
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com