Below you will find example sentences with "reaction mass". The examples show how this phrase is used in natural context and which words often surround it.
Reaction Mass in a sentence
Corpus data
- Displayed example sentences: 20
- Discovered as a combination around: mass
- Corpus frequency in the collocation scan: 10
- Phrase length: 2 words
- Average sentence length: 28.2 words
Sentence profile
- Phrase position: 4 start, 10 middle, 6 end
- Sentence types: 20 statements, 0 questions, 0 exclamations
Corpus analysis
- The phrase "reaction mass" has 2 words and usually appears in the middle in these examples. The average sentence has 28.2 words and is mostly made up of statements.
- Around this phrase, patterns and context words such as accelerates the reaction mass is expelled, accelerating the reaction mass, rocket, energy and use stand out.
- In the phrase index, this combination connects with mass shooting, mass shootings, chain reaction, mass shootings, gravitational mass and body mass, linking the page to nearby combinations.
Example types with reaction mass
This selection groups the examples by length and sentence type, making usage of the full phrase easier to scan:
A rocket with a high exhaust velocity can achieve the same impulse with less reaction mass. (16 words)
A Water Powered Rocket is a type of model rocket using water as its reaction mass. (16 words)
For a high delta-v mission, the majority of the spacecraft's mass needs to be reaction mass. (18 words)
But they are so economical in their use of reaction mass that they can keep firing continuously for days or weeks, while chemical rockets use up reaction mass so quickly that they can only fire for seconds or minutes. (39 words)
If the reaction mass had to be accelerated from zero speed to the exhaust speed, all energy produced would go into the reaction mass and nothing would be left for kinetic energy gain by the rocket and payload. (38 words)
The advantage of this formulation is that it may be used for rockets, where all the reaction mass is carried on board, as well as aeroplanes, where most of the reaction mass is taken from the atmosphere. (37 words)
Example sentences (20)
Since a mass driver could use any type of mass for reaction mass to move the spacecraft, a mass driver or some variation seems ideal for deep-space vehicles that scavenge reaction mass from found resources.
Because a rocket must carry all of its reaction mass, most of the initially-expended reaction mass goes towards accelerating reaction mass rather than payload.
For maximum velocity, the reaction mass should optimally consist of fission products, the "ash" of the primary energy source, in order that no extra reaction mass need be book-kept in the mass ratio.
But they are so economical in their use of reaction mass that they can keep firing continuously for days or weeks, while chemical rockets use up reaction mass so quickly that they can only fire for seconds or minutes.
However, if the rocket already moves and accelerates (the reaction mass is expelled in the direction opposite to the direction in which the rocket moves) less kinetic energy is added to the reaction mass.
If the reaction mass had to be accelerated from zero speed to the exhaust speed, all energy produced would go into the reaction mass and nothing would be left for kinetic energy gain by the rocket and payload.
The advantage of this formulation is that it may be used for rockets, where all the reaction mass is carried on board, as well as aeroplanes, where most of the reaction mass is taken from the atmosphere.
Thus, although the energy required is 50 MJ per kg reaction mass, only 20 MJ is used for the increase in speed of the reaction mass.
Accordingly, many spacecraft utilize reaction wheels or control moment gyroscopes to control orientation in space. citation A gravitational slingshot can carry a space probe onward to other destinations without the expense of reaction mass.
One advantage of magnetic or solar sails over (chemical or ion) reaction thrusters is that no reaction mass is depleted or carried in the craft.
Power use and propulsive efficiency For all reaction engines (such as rockets and ion drives) some energy must go into accelerating the reaction mass.
Because the weight on Earth of the reaction mass is often unimportant when discussing vehicles in space, specific impulse can also be discussed in terms of impulse per unit mass.
For a high delta-v mission, the majority of the spacecraft's mass needs to be reaction mass.
One possible drawback of the mass driver is that it has the potential to send solid reaction mass travelling at dangerously high relative speeds into useful orbits and traffic lanes.
The impulse provided by launching a particle of reaction mass having mass m at velocity v is mv.
The kinetic energy is easiest to calculate when the speed is measured in the center of mass frame of the vehicle and (less obviously) its reaction mass / air (i.
The law of conservation of momentum is usually taken to imply that any engine which uses no reaction mass cannot accelerate the center of mass of a spaceship (changing orientation, on the other hand, is possible).
Alternatively, liquid oxygen could be used as reaction mass, which upon release would boil down to its molecular state.
A rocket with a high exhaust velocity can achieve the same impulse with less reaction mass.
A Water Powered Rocket is a type of model rocket using water as its reaction mass.