Landing Gear Systems

Question 1

What are the requirements of an undercarriage?

Answer 1

SUPPORT the all up WEIGHT ON the GROUND;
ABSORB landing LOADS, provide SHOCK ABSORPTION;
WITHSTAND SIDE LOADS;
MINIMUM ROLLING FRICTION;
MINIMUM DRAG while AIRBORNE;
Provide MAXIMUM TRACTION;
PREVENT ACCIDENTAL RETRACTION on the ground;
MINIMUM WEIGHT FOR given STRENGTH

Question 3

What is the definition of footprint?

Answer 3

The SURFACE AREA occupied by the aircraft TYRES when STANDING on the GROUND

Question 5

What is the main purpose of retractable undercarriage?

Answer 5

REDUCE DRAG

Question 6

What are the types of motive power?

Answer 6

ELECTRIC motor;
HYDRAULIC actuator;
PNEUMATIC actuator;
MECHANICAL linkage

Question 7

What is an ACN?

What does it stand for?

Answer 7

AIRCRAFT CLASSIFICATION NUMBER;
A number that expresses the RELATIVE EFFECT of an aircraft at a GIVEN CONFIGURATION on a PAVEMENT STRUCTURE for a specified standard SUB GRADE STRENGTH.

Question 8

What is a PCN?

What does it stand for?

Answer 8

PAVEMENT CLASSIFICATION NUMBER;

A number that expresses a LOAD CARRYING CAPACITY of a PAVEMENT for UNRESTRICTED operations.