LOCKHEED ""TRISTAR""

The Lockheed TriStar jet, featuring quieter RB211 engines, underwent acoustic tests in California. A Senate vote secured a loan, saving jobs and the engines. Innovations in engine design and sound absorption material contribute to its quiet operation, though some cabin noise remains, allowing passengers to converse without being overheard.

What is the main focus of the acoustic tests conducted on the Lockheed TriStar jet?

• To measure the speed of the jet

• To test the durability of the jet's body

• To evaluate the fuel efficiency

• To assess the noise levels of the engines

How much quieter are the Rolls-Royce RB211 engines compared to other jets?

• 25 percent quieter

• 50 percent quieter

• 100 percent quieter

• 75 percent quieter

What was the outcome of the American Senate vote regarding the Lockheed project?

• It resulted in a new tax on British workers

• It led to the cancellation of the project

• It guaranteed a loan of 104 million pounds

• It increased the project's budget by 50 million pounds

What are the two major technical accomplishments in the TriStar that contribute to its quiet operation?

• Enhanced landing gear and stronger fuselage

• Improved fuel efficiency and larger cabin space

• New wing design and advanced navigation system

• New Rolls engine and sound absorption material

What is the expected noise level in the cabin of the TriStar according to experts?

• Completely silent

• As loud as a typical jet

• Loud enough to require earplugs

• Quiet enough for conversations without being overheard