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Why can a spacecraft traveling in space can travel at a constant speed and in a straight path without using engines?
To generate any sort of power on Earth, you need to transform energy from one form to another.
The brakes on your car for example, turns kinetic energy (friction) into thermal energy in order to generate the stopping power. Energy is all around us, and it cannot be destroyed, only transformed.
The trouble then comes to figuring out the best ways to vent the thermal energy from the brakes to make them more effective.
In space an object has 'Mass' but not 'Weight'. As weight is calculated against gravity, which is obviously missing in space.
There is also no air, no energy. So if a spacecraft is propelled through space there is no resistance to push it faster, or push against it to slow it down. Its a void where a spacecraft would have to transform it own energy (in the way of thrust) in order to maneuver
What else can I help you with?
How four-stroke engines work?
four strok engines are like a scale down version of a car engine. They work the same way. unlike 2 stroke which can work any way E.G: upside down etc. 4 stroke engines need to positioned the right way so they can have a constant flow of oil. does this help?
Working principle of rocket engine?
A rocket engine, or simply "rocket," is a jet engine[1] that uses only propellant mass for forming its high speed propulsive jet. Rocket engines are reaction engines and obtain thrust in accordance with Newton's third law. Since they need no external material to form their jet, rocket engines can be used for spacecraft propulsion as well as terrestrial uses, such as missiles. Most rocket engines are internal combustion engines, although non combusting forms also exist.Rocket engines as a group, have the highest exhaust velocities, are by far the lightest, and are the most energy efficient (at least at very high speed) of all types of jet engines. However, for the thrust they give, due to the high exhaust velocity and relatively low specific energy of rocket propellant, they consume propellant very rapidly.
What are two main types of rocket engines?
The two main types of rocket engines are Solid fuel rocket engines and Liquid fuel rocket engines.
Examples of both 'horizontal' search engines and Vertical' search engines?
Horizontal search engines are general-purpose search engines such as Google and Yahoo. Vertical search engines, meanwhile, are specialized by content such as Trulia, Mocavo and Yelp.
Are car engines pulleys?
yes car engines are pulleys
Why can astronauts not use parachutes to heip slowdown their spacecraftsas it approaches the moon how do they slowdown their spacecraft?
Astronauts cannot use parachutes to slow down their spacecraft when approaching the Moon because there is no atmosphere on the Moon to deploy parachutes effectively. Instead, spacecraft use propulsion systems like engines or thrusters to slow down as they approach the Moon. By firing these engines in the opposite direction they are traveling, they can reduce their speed and enter lunar orbit safely.
The differences between an aircraft and a spacecraft?
Spacecraft lack wings & their engines don't require air to function.
What is better constant torque or constant power engines?
mk
In outer space can travel at a constant speed and in specific direction without slowing down occur even when the engines are turned off why?
In outer space, objects can travel at a constant speed and direction without slowing down because there is no friction or air resistance to oppose their motion. Once an object is set in motion in the vacuum of space, it will continue moving in a straight line unless acted upon by an external force. This allows spacecraft to maintain their velocity even when their engines are turned off.
The four types of siege engines?
Straight/Inline engines, V type engines, Rotary engines and diesel engines
Why are rocket engines used to launch a spacecraft?
To give the space craft a boost
What is a launch of a spacecraft?
A spacecraft launch refers to the process of sending a spacecraft into space from Earth. It involves the ignition of the rocket engines to propel the spacecraft out of Earth's atmosphere and into its designated orbit. Launches can be conducted by government space agencies or private companies.
What types of car engines exist?
There are a number of different types of car engines. Some of these engine types are Straight/Inline engines, V type engines, Rotary engines and diesel engines.
What force causes the spacecraft to orbit the moon?
The force that causes a spacecraft to orbit the Moon is gravity. Gravity is the force of attraction between two objects with mass, like the Moon and the spacecraft, which keeps the spacecraft in orbit around the Moon.
How do you travel through the universe?
You had better travel near the speed of light or you will not see much of the universe. Unfortunately travelling near the speed is not yet possible, so you are out of luck.
Why petrol engines called constant volume engines?
In a engine, well 99.9% of them the piston is conected to a crank via a conrod, as nothing changes during the strokes of the piston and the cylinder bores dont change. The swept volume of the stroke is always constant.
Constant pressure cycle used in which engine?
Gas turbine engines and airbreathing jet engines use the Brayton Cycle.
