IVHMS

Question 1

IVHMS is compromised of:

Answer 1

An on board system, integrated vehicle health and management unit, ground station and software for displaying, viewing, and extracting helicopter health and safety information.

Question 2

Functions of the on board system:

Answer 2

Power checks, main rotor track and balance, tail rotor track and balance, engine output shaft testing and balance, oil cooler testing and balance, maintenance card recording, isolating irregular/unusual vibrations, mechanical diagnostics, etc.

Question 3

MFDs provide over how many pages of IVHMS data?

Answer 3

15

Question 4

The IVHMU on board memory contains data spanning multiple flights (approx. 25 hours). It will ____ old files in a logical fashion to prevent memory overflow.

Answer 4

Delete

Question 5

What is the only way to transfer data to the ground station?

Answer 5

PCMCIA card (must be in before power applied).

Question 6

How many accelerometers are there and what do they do?

Answer 6

29+ mounted to the airframe and they track and monitor temperature, vibration, pulse input interfaces, timing references, and general frequency input interfaces.

Question 7

Cockpit Voice and Flight Data Recording has sufficient crash protected memory to record:

Answer 7

Four channels of voice for a minimum of two hours per channel.

Question 8

Are HUMS and CVR/FDR data downloading independent of each other?

Answer 8

Yes

Question 9

The inertia sw is used to control primary power to the CVR/FDR in the event of:

Answer 9

An incapacitating incident.

Question 10

CVR/FDR starts recording when any of the following exist:

Answer 10

1 EG ON (NG1 greater than 55%), #2 ENG ON (NG2 greater than 55%), Main XSM OP greater than 20 PSI, or WOW switch equals false (in flight).

Question 11

CVR/FDR stops recording when all of the following exist:

Answer 11

1 EG OFF (NG1 less than 55%), #2 ENG OFF (NG2 less than 55%), Main XSM OP less than 20 PSI, or WOW switch equals true (on ground).

Question 12

What is the minimum operating life of the underwater locator beacon? What is its useful life?

Answer 12

30 days and 6 years.

Question 13

Mechanical Diagnostics can be acquired in one of the three modes:

Answer 13

Automatic, prompted, or forced.

Question 14

How many events can be captured per HUMS-E-REC I-Event start/stop cycle?

Answer 14

Around 5

Question 15

IVHMU captures intermittent events including:

Answer 15

Cockpit noise, vibration data, and flight parameter data.

Question 16

How many seconds of data is captured?

Answer 16

15 seconds before and after the event button is pressed. It takes up to 5.5 mins to complete the processing of the event.

The purpose of the I-Event sw is to record data for troubleshotting.

Question 17

The right pitot tube is connect to the:

Answer 17

Pilots air data system.

Question 18

Where is the I-Event data viewable?

Answer 18

On the IVHMS Ground Station.

Question 19

What starts/stops recording of the CVR/FDR?

Answer 19

DCUs

Question 20

Which IVHMS main menu would a pilot need to access to perform a HIT check?

Answer 20

Power Checks