Search research articles

ABOUT JoVE

Overview Leadership Blog JoVE Help Center

AUTHORS

Publishing Process Editorial Board Scope & Policies Peer Review FAQ Submit

LIBRARIANS

Testimonials Subscriptions Access Resources Library Advisory Board FAQ

RESEARCH

JoVE Journal Methods Collections JoVE Encyclopedia of Experiments Archive

EDUCATION

JoVE Core JoVE Business JoVE Science Education JoVE Lab Manual Faculty Resource Center Faculty Site

Terms & Conditions of Use

Related Concept Videos

Energy Bands in Solids

Energy Bands in Solids

Isolated atoms have discrete energy levels that are well described by the Bohr model. And, it quantifies the energy of an electron in a hydrogen atom as En. Higher quantum numbers 'n' yield less negative, closer electron energy levels.
Band Formation:
When atoms are brought close together, as in a solid, these discrete energy levels begin to split due to the overlap of electron orbitals from adjacent atoms. This split occurs because of the Pauli exclusion principle, which states...

Harvesting Solar Energy by Means of Charge-Separating Nanocrystals and Their Solids

Harvesting Solar Energy by Means of Charge-Separating Nanocrystals and Their Solids

A general strategy for the development of charge-separating semiconductor nanocrystal composites deployable for solar energy production is presented. We show that assembly of donor-acceptor nanocrystal domains in a single nanoparticle geometry gives rise to a photocatalytic function, while bulk-heterojunctions of donor-acceptor nanocrystal films can be used for photovoltaic energy...

Rocket Propulsion in Gravitational Field - II

Rocket Propulsion in Gravitational Field - II

A rocket's velocity in the presence of a gravitational field is decreased by the amount of force exerted by Earth's gravitational field, which opposes the motion of the rocket. If we consider thrust, that is, the force exerted on a rocket by the exhaust gases, then a rocket's thrust is greater in outer space than in the atmosphere or on a launch pad. In fact, gases are easier to expel in a vacuum.
A rocket's acceleration depends on three major factors, consistent with the...

A Saline/Bipolar Radiofrequency Energy Device As an Adjunct for Hemostasis in Solid Organ Injury/Trauma

A Saline/Bipolar Radiofrequency Energy Device As an Adjunct for Hemostasis in Solid Organ Injury/Trauma

The goal of this publication is to demonstrate the potential application of a novel device using simulated solid organ injuries in a porcine...

Rocket Propulsion in Empty Space - I

Rocket Propulsion in Empty Space - I

The driving force for the motion of any vehicle is friction, but in the case of rocket propulsion in space, the friction force is not present. The motion of a rocket changes its velocity (and hence its momentum) by ejecting burned fuel gases, thus causing it to accelerate in the direction opposite to the velocity of the ejected fuel. In this situation, the mass and velocity of the rocket constantly change along with the total mass of ejected gases. Due to conservation of momentum, the...

Rocket Propulsion In Empty Space - II

Rocket Propulsion In Empty Space - II

The motion of a rocket is governed by the conservation of momentum principle. A rocket's momentum changes by the same amount (with the opposite sign) as the ejected gases. As time goes by, the rocket's mass (which includes the mass of the remaining fuel) continuously decreases, and its velocity increases. Therefore, the principle of conservation of momentum is used to explain the dynamics of a rocket's motion. The ideal rocket equation gives the change in velocity that a rocket...

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by

Same author

SOCS3 Stabilizes PARP1 to Suppress Adipogenic Transcription and Abdominal Adipogenesis in Avian.

FASEB journal : official publication of the Federation of American Societies for Experimental Biology·2026

Same author

Patriarchy is not broken, it is softly remixed: masculinities and gay fatherhood in Chinese surrogacy families.

Culture, health & sexuality·2026

Same author

Microbial-Associated Food Web Trophic Transfer of Heavy Metals Potentiates Health Risks in a Mining-Impacted Subtropical Yuanjiang-Red River Basin.

Environmental science & technology·2026

Same author

Development of a river habitat quality index (RHQI) framework for dry-hot valleys: Unraveling driving mechanisms and management implications.

Journal of environmental management·2026

Same author

Emodin Exerts Dual Hepatoprotective/Hepatotoxic Effects Dependent on Metabolic Microenvironment via Gut-Liver Axis Crosstalk: A Multi-Omics Study in MAFLD and Normal Mice.

International journal of molecular sciences·2026

Same author

Insect Odorant Receptors: From Structure and Evolution to Mechanism and Application.

Insects·2026

Search research articles

Related Experiment Video

Updated: Jan 19, 2026

Harvesting Solar Energy by Means of Charge-Separating Nanocrystals and Their Solids

Harvesting Solar Energy by Means of Charge-Separating Nanocrystals and Their Solids

Published on: August 23, 2012

An ascent guidance algorithm for the energy management of solid rockets.

Xiaoming Cheng¹, Ran Zhang², Xijuan Zeng²

¹School of Astronautics, Beihang University, Beijing 100191, China; Beijing Aerospace Automatic Control Institute, Beijing, 100854, China.

ISA Transactions

|September 9, 2019

Summary

A new Double-arcs Energy Management (DAEM) algorithm efficiently manages solid rocket energy. This method theoretically satisfies height increment constraints, offering faster, real-time solutions for rocket guidance.

Keywords:

Ascent guidance Energy management Multi-restriction Solid rockets Velocity capability curve

More Related Videos

Energy Bands in Solids

Energy Bands in Solids

A Saline/Bipolar Radiofrequency Energy Device As an Adjunct for Hemostasis in Solid Organ Injury/Trauma

A Saline/Bipolar Radiofrequency Energy Device As an Adjunct for Hemostasis in Solid Organ Injury/Trauma

Published on: July 28, 2020

Related Experiment Videos

Last Updated: Jan 19, 2026

Harvesting Solar Energy by Means of Charge-Separating Nanocrystals and Their Solids

Harvesting Solar Energy by Means of Charge-Separating Nanocrystals and Their Solids

Published on: August 23, 2012

Energy Bands in Solids

Energy Bands in Solids

A Saline/Bipolar Radiofrequency Energy Device As an Adjunct for Hemostasis in Solid Organ Injury/Trauma

A Saline/Bipolar Radiofrequency Energy Device As an Adjunct for Hemostasis in Solid Organ Injury/Trauma

Published on: July 28, 2020

Area of Science:

Aerospace Engineering
Guidance, Navigation, and Control (GNC)

Background:

Efficient energy management is critical for solid rockets to meet terminal constraints.
Traditional methods struggle with satisfying height increment constraints during energy management.

Purpose of the Study:

To propose a novel Double-arcs Energy Management (DAEM) guidance algorithm.
To address limitations in satisfying height increment constraints in solid rocket energy management.

Main Methods:

Developed the DAEM algorithm based on online planning of the velocity capability curve.
Designed the velocity capability curve using two tangential arcs.
Transformed the guidance problem into solving a system of nonlinear equations for arc parameters in real-time.

Main Results:

The DAEM algorithm theoretically satisfies the height increment constraint.
The algorithm achieves quadratic convergence for solving the nonlinear equations.
Simulations demonstrate the effectiveness and advantages over existing energy management algorithms.

Conclusions:

The DAEM algorithm provides an effective solution for solid rocket energy management.
DAEM offers theoretical satisfaction of height increment constraints and real-time computational efficiency.