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Question

Difficulty: MediumDirect Fact Retrieval

Read the following technical passage and complete the statement below:

Pneumatic de-icing boots are installed on the leading edges of aircraft wings and stabilizers to eliminate accumulated ice during flight. When the system is activated, an engine-driven pneumatic pump inflates the flexible rubber boots with regulated air pressure, cracking the brittle ice layer so that the slipstream blows it away. Standard operating procedures dictate that pilots must cycle the inflation boots only after a minimum of one-quarter inch of ice has built up; inflating the boots prematurely can cause a hollow ice bridge to form around the inflated boot, rendering subsequent inflation cycles ineffective.

Based on the passage, complete the following statement:

Answer:Inflating pneumatic de-icing boots prior to reaching the recommended thickness can lead to the formation of a 【hollow ice bridge】.

Answer

hollow ice bridge (or ice bridge)
The author directly states that inflating the boots prematurely causes a 'hollow ice bridge' to form around the inflated boot, which prevents subsequent inflation cycles from cracking the ice.

Step-by-Step Solution

1
Scan the passage for key terms related to premature activation or inflating before the recommended thickness.
The text states: 'inflating the boots prematurely can cause a hollow ice bridge to form around the inflated boot, rendering subsequent inflation cycles ineffective.'
Direct fact retrieval requires isolating the specific factual sentence answering the prompt.
2
Extract the specific noun phrase representing the physical structure created by premature inflation.
The passage identifies the structure as a 'hollow ice bridge'.
The blank requires the exact explicit consequence identified by the author.

Key Concept

Direct Fact Retrieval
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Topics

Direct Fact Retrieval

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