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.
Both the reading passage and the lecturer discuss the possibility of using airships in the future. While the reading passage brings up three advantages of using airship, the lecturer finds them impractical and provides some evidence to refute them.
First, the writer asserts that airships don't need fuel to move, like ballon, in spite of helicopteres and planes. Therefore, it will be a economic option comparison to airplanes and helicopteres. On the other hand, the lecturer declares that the airships need light gasses as hydrogen and helium. Hydrogen significantly suseptable to fire, as the past accidents of the airship shown. Helium is more fire resistance, but it is expensive and obtain difficultly. So the best safe and cost-beneficial option is using contemporary transits like airplanes.
Second, the author argues that airships can exert to some particular duty in some especial locations due to their ability to take-off and land without using spacious location like airplanes. Also they can load more than helicopters. For example, they can load three logs in same time. Conversely, the professor acclaims that the airships need to be steady in doing these duties. But, they are so light that winds in such altitude easily can disturb their balanced.
Finally, the writer says that the airships can be used to replace satellites. They will be economicly rather than modern satellites due their indepency to fuels. In contrast, the professor indicates that the past airship could reach to 14 kilometers eventually and they need fuel to resist w
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Grammar and spelling errors:
Line 3, column 41, Rule ID: EN_CONTRACTION_SPELLING
Message: Possible spelling mistake found
Suggestion: don't
...First, the writer asserts that airships dont need fuel to move, like ballon, in spit...
^^^^
Line 3, column 137, Rule ID: EN_A_VS_AN
Message: Use 'an' instead of 'a' if the following word starts with a vowel sound, e.g. 'an article', 'an hour'
Suggestion: an
...teres and planes. Therefore, it will be a economic option comparison to airplanes...
^
Line 5, column 192, Rule ID: SENT_START_CONJUNCTIVE_LINKING_ADVERB_COMMA[1]
Message: Did you forget a comma after a conjunctive/linking adverb?
Suggestion: Also,
...using spacious location like airplanes. Also they can load more than helicopters. Fo...
^^^^
Transition Words or Phrases used:
also, but, conversely, finally, first, if, second, so, therefore, while, for example, in contrast, in spite of, on the other hand
Attributes: Values AverageValues Percentages(Values/AverageValues)% => Comments
Performance on Part of Speech:
To be verbs : 8.0 10.4613686534 76% => OK
Auxiliary verbs: 12.0 5.04856512141 238% => Less auxiliary verb wanted.
Conjunction : 10.0 7.30242825607 137% => OK
Relative clauses : 7.0 12.0772626932 58% => More relative clauses wanted.
Pronoun: 20.0 22.412803532 89% => OK
Preposition: 31.0 30.3222958057 102% => OK
Nominalization: 3.0 5.01324503311 60% => More nominalizations (nouns with a suffix like: tion ment ence ance) wanted.
Performance on vocabulary words:
No of characters: 1319.0 1373.03311258 96% => OK
No of words: 250.0 270.72406181 92% => More content wanted.
Chars per words: 5.276 5.08290768461 104% => OK
Fourth root words length: 3.97635364384 4.04702891845 98% => OK
Word Length SD: 2.77849167715 2.5805825403 108% => OK
Unique words: 145.0 145.348785872 100% => OK
Unique words percentage: 0.58 0.540411800872 107% => OK
syllable_count: 408.6 419.366225166 97% => OK
avg_syllables_per_word: 1.6 1.55342163355 103% => OK
A sentence (or a clause, phrase) starts by:
Pronoun: 4.0 3.25607064018 123% => OK
Article: 7.0 8.23620309051 85% => OK
Subordination: 2.0 1.25165562914 160% => OK
Conjunction: 1.0 1.51434878587 66% => OK
Preposition: 4.0 2.5761589404 155% => OK
Performance on sentences:
How many sentences: 16.0 13.0662251656 122% => OK
Sentence length: 15.0 21.2450331126 71% => The Avg. Sentence Length is relatively short.
Sentence length SD: 34.9584016189 49.2860985944 71% => OK
Chars per sentence: 82.4375 110.228320801 75% => OK
Words per sentence: 15.625 21.698381199 72% => OK
Discourse Markers: 8.0625 7.06452816374 114% => OK
Paragraphs: 4.0 4.09492273731 98% => OK
Language errors: 3.0 4.19205298013 72% => OK
Sentences with positive sentiment : 5.0 4.33554083885 115% => OK
Sentences with negative sentiment : 4.0 4.45695364238 90% => OK
Sentences with neutral sentiment: 7.0 4.27373068433 164% => OK
What are sentences with positive/Negative/neutral sentiment?
Coherence and Cohesion:
Essay topic to essay body coherence: 0.141334912892 0.272083759551 52% => OK
Sentence topic coherence: 0.0486376638807 0.0996497079465 49% => OK
Sentence topic coherence SD: 0.0385956503588 0.0662205650399 58% => OK
Paragraph topic coherence: 0.0914377718506 0.162205337803 56% => OK
Paragraph topic coherence SD: 0.0193621001203 0.0443174109184 44% => Paragraphs are similar to each other. Some content may get duplicated or it is not exactly right on the topic.
Essay readability:
automated_readability_index: 11.3 13.3589403974 85% => Automated_readability_index is low.
flesch_reading_ease: 56.25 53.8541721854 104% => OK
smog_index: 8.8 5.55761589404 158% => OK
flesch_kincaid_grade: 9.1 11.0289183223 83% => OK
coleman_liau_index: 13.05 12.2367328918 107% => OK
dale_chall_readability_score: 9.18 8.42419426049 109% => OK
difficult_words: 76.0 63.6247240618 119% => OK
linsear_write_formula: 9.0 10.7273730684 84% => OK
gunning_fog: 8.0 10.498013245 76% => OK
text_standard: 9.0 11.2008830022 80% => OK
What are above readability scores?
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Rates: 60.0 out of 100
Scores by essay e-grader: 18.0 Out of 30
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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.