What does the last number in 100/130 relate to?

Rome through the General Aircraft Technical Knowledge Exam. Dive deep into the core concepts of aircraft operation. Tackle multiple-choice questions and detailed explanations to ensure you soar to success. Prepare meticulously and conquer your test!

Multiple Choice

What does the last number in 100/130 relate to?

Explanation:
The two numbers in aviation gasoline grades like 100/130 denote octane performance, specifically resistance to engine knocking. The first number is the Research Octane Number (RON), which reflects detonation resistance under lighter, milder test conditions. The last number is the Motor Octane Number (MON), which measures detonation resistance under harsher, more severe conditions (hotter intake, higher engine speed, higher cylinder pressure). So the last number tells you how well the fuel resists detonation when the engine is under demanding conditions. That’s why the last number is tied to detonation resistance, not cold-start performance, rich mixture behavior, or fuel density.

The two numbers in aviation gasoline grades like 100/130 denote octane performance, specifically resistance to engine knocking. The first number is the Research Octane Number (RON), which reflects detonation resistance under lighter, milder test conditions. The last number is the Motor Octane Number (MON), which measures detonation resistance under harsher, more severe conditions (hotter intake, higher engine speed, higher cylinder pressure). So the last number tells you how well the fuel resists detonation when the engine is under demanding conditions.

That’s why the last number is tied to detonation resistance, not cold-start performance, rich mixture behavior, or fuel density.

More Multiple Choice Questions
Subscribe

Get the latest from Passetra

You can unsubscribe at any time. Read our privacy policy