An airship is a type of aircraft that flies using a very large balloon filled with a lighter-than-air gas. Airships were an important means of air transportation before the 1940s but are little used today, having been largely replaced by airplanes and helicopters.However,some aeronautical engineers believe that airships could become popular again because they offer a number of advantages over airplanes and helicopters.
One advantage of airships is that for vertical lift(the force that keeps the ship airborne),they use a balloon that floats rather than an engine.Airplanes and helicopters use engines for both vertical lift and horizontal movement,but airships use engines solely for horizontal movement.So,airships use less fuel than a typical aircraft-thus making their fuel costs more economical.
Another advantage of airships is that they can be used in hard-to-reach locations.Unlike airplanes, airships do not require a long runway for takeoff and landing because of their ability to lift off and land vertically.The only other aircraft capable of ascending into the sky by going straight up and descending straight down to the ground is the helicopter,which can carry only a small amount of weight.Airships,meanwhile,are able to carry very heavy loads.As a result,airships could do jobs that neither airplanes nor helicopters can do,such as carrying heavy logs from forests to distribution centers.
Finally,airships could even be used to replace satellites.Currently, satellites are launched into Earth's orbit carying all kinds of equipment important in telecommunications or in surveying large areas of Earth's surface for military purposes.Since airships can also rise high above the surface and stay there without refueling for a significant amount of time,they could provide services similar to those provided by satellites,and at a considerably cheaper cost.
The reading and lecture are both about the comparison of the airship with aeroplane and helicopter. The author of the reading feels that there were several beneficial aspects of the airship. The lecturer challenges claim made by the author. He is of the opinion that the airship would not like to be used in the future.
To begin with, the reading says that airship has less expedition of energy in terms of aeroplane and helicopter--uses balls for floatation and requires only horizontal movement. The speaker, on the other hand, argues that, with the airship, there would be a decrease in fuel lift, which contains lighter gases, hydrogen and helium, having negative properties. He points out that the hydrogen could easily catch fire and helium have low lifting power. Thus, it would not be a true economic solution.
Moreover, the article says that the airship can be used in difficult areas like a small place, and could carry heavyweight. The lecturer casts doubt on it. He elaborates on it by giving an example. For instance, when the airship is allowed to take a tree log, it should have to land slowly down, pick up it, and safely rise. Furthermore, he illustrates that if there is not a steady wind, then there would be a high chance of an accident.
Finally, the author posits that the airships can be used as a substitute for satellites as it can function a same as it. On the contrary, the professor opposes on it pointing that the airship could not rise more than a height of 14 km. According to him," when there is a strong wind, it requires a lot of energy i.e. fuel to resist it, and required to refuelled along the path". Consequently, there would be uninterrupted services provide it
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| 2020-10-09 | rohamheidari | 83 | view |
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| 2020-11-14 | minafathi75 | 80 | view |
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Grammar and spelling errors:
Line 1, column 192, Rule ID: ENGLISH_WORD_REPEAT_BEGINNING_RULE
Message: Three successive sentences begin with the same word. Reword the sentence or use a thesaurus to find a synonym.
...eral beneficial aspects of the airship. The lecturer challenges claim made by the a...
^^^
Line 4, column 252, Rule ID: COMMA_PARENTHESIS_WHITESPACE
Message: Put a space after the comma
Suggestion: , &apos
...than a height of 14 km. According to him,' when there is a strong wind, it requir...
^^^^^^
Transition Words or Phrases used:
consequently, finally, furthermore, if, moreover, so, then, thus, for instance, on the contrary, to begin with, on the other hand
Attributes: Values AverageValues Percentages(Values/AverageValues)% => Comments
Performance on Part of Speech:
To be verbs : 13.0 10.4613686534 124% => OK
Auxiliary verbs: 12.0 5.04856512141 238% => Less auxiliary verb wanted.
Conjunction : 9.0 7.30242825607 123% => OK
Relative clauses : 12.0 12.0772626932 99% => OK
Pronoun: 26.0 22.412803532 116% => OK
Preposition: 37.0 30.3222958057 122% => OK
Nominalization: 6.0 5.01324503311 120% => OK
Performance on vocabulary words:
No of characters: 1418.0 1373.03311258 103% => OK
No of words: 298.0 270.72406181 110% => OK
Chars per words: 4.75838926174 5.08290768461 94% => OK
Fourth root words length: 4.15483772266 4.04702891845 103% => OK
Word Length SD: 2.68826925474 2.5805825403 104% => OK
Unique words: 163.0 145.348785872 112% => OK
Unique words percentage: 0.546979865772 0.540411800872 101% => OK
syllable_count: 443.7 419.366225166 106% => OK
avg_syllables_per_word: 1.5 1.55342163355 97% => OK
A sentence (or a clause, phrase) starts by:
Pronoun: 7.0 3.25607064018 215% => Less pronouns wanted as sentence beginning.
Article: 9.0 8.23620309051 109% => OK
Subordination: 2.0 1.25165562914 160% => OK
Conjunction: 3.0 1.51434878587 198% => OK
Preposition: 5.0 2.5761589404 194% => OK
Performance on sentences:
How many sentences: 17.0 13.0662251656 130% => OK
Sentence length: 17.0 21.2450331126 80% => The Avg. Sentence Length is relatively short.
Sentence length SD: 44.0201275134 49.2860985944 89% => OK
Chars per sentence: 83.4117647059 110.228320801 76% => OK
Words per sentence: 17.5294117647 21.698381199 81% => OK
Discourse Markers: 7.58823529412 7.06452816374 107% => OK
Paragraphs: 4.0 4.09492273731 98% => OK
Language errors: 2.0 4.19205298013 48% => OK
Sentences with positive sentiment : 6.0 4.33554083885 138% => OK
Sentences with negative sentiment : 6.0 4.45695364238 135% => OK
Sentences with neutral sentiment: 5.0 4.27373068433 117% => OK
What are sentences with positive/Negative/neutral sentiment?
Coherence and Cohesion:
Essay topic to essay body coherence: 0.171323521293 0.272083759551 63% => OK
Sentence topic coherence: 0.0546679998384 0.0996497079465 55% => OK
Sentence topic coherence SD: 0.0410079132642 0.0662205650399 62% => OK
Paragraph topic coherence: 0.110359762282 0.162205337803 68% => OK
Paragraph topic coherence SD: 0.0225567705658 0.0443174109184 51% => OK
Essay readability:
automated_readability_index: 9.8 13.3589403974 73% => Automated_readability_index is low.
flesch_reading_ease: 62.68 53.8541721854 116% => OK
smog_index: 3.1 5.55761589404 56% => Smog_index is low.
flesch_kincaid_grade: 8.7 11.0289183223 79% => OK
coleman_liau_index: 10.03 12.2367328918 82% => OK
dale_chall_readability_score: 8.19 8.42419426049 97% => OK
difficult_words: 70.0 63.6247240618 110% => OK
linsear_write_formula: 8.5 10.7273730684 79% => OK
gunning_fog: 8.8 10.498013245 84% => OK
text_standard: 9.0 11.2008830022 80% => OK
What are above readability scores?
---------------------
Rates: 81.6666666667 out of 100
Scores by essay e-grader: 24.5 Out of 30
---------------------
Note: the e-grader does NOT examine the meaning of words and ideas. VIP users will receive further evaluations by advanced module of e-grader and human graders.