100% satisfaction guarantee Immediately available after payment Both online and in PDF No strings attached
logo-home
B747-400 Hydraulic System Questions with 100% Correct Answers $12.99   Add to cart

Exam (elaborations)

B747-400 Hydraulic System Questions with 100% Correct Answers

 8 views  0 purchase
  • Course
  • B747-400 Hydraulic System
  • Institution
  • B747-400 Hydraulic System

Describe the hydraulic system, what it powers and name the general components Correct Answer Hydraulic system consists of 4 independent systems operating at 3000 PSI powering: (PASS- SELF - BRAKES) - Primary flight controls - stabilizer trim - Landing gear - flaps - spoilers - breaks...

[Show more]

Preview 1 out of 4  pages

  • August 30, 2024
  • 4
  • 2024/2025
  • Exam (elaborations)
  • Questions & answers
  • B747-400 Hydraulic System
  • B747-400 Hydraulic System
avatar-seller
ExamsGuru
B747-400 Hydraulic System Questions with
100% Correct Answers
Describe the hydraulic system, what it powers and name the general components
Correct Answer Hydraulic system consists of 4 independent systems operating at 3000
PSI powering:

(PASS- SELF - BRAKES)

- Primary flight controls
- stabilizer trim
- Landing gear
- flaps
- spoilers
- breaks

- Autopilot servos
- elevator feel
- Steering



The system consists of:

- 4 engine driven hydraulic pumps (one for each engine).
- 4 reservoirs
- 2 electrical demand pumps (system 2 & 3)
- 2 Pneumatic demand pumps (system 1 & 4)
- 2 electrical Auxiliary pumps (system 1 & 4)
- 4 SOVs (one for each engine)
- Numerous Hydraulic actuators for primary and secondary flight controls and the
landing gear

What pressure does the hydraulic system operate at? Correct Answer 3000 PSI

How is the hydraulic SOV operated? Correct Answer Manually by the engine fire switch

What is the purpose of Demand Pumps? Correct Answer As the name suggests,
demand pumps will operate if the engine driven pumps fail or are under high demand
(such as when flaps extend or are already extended)

How are the Demand pumps operated? Correct Answer Electrically for system 2 and 3
and pneumatically for system 1 and 4.

The benefits of buying summaries with Stuvia:

Guaranteed quality through customer reviews

Guaranteed quality through customer reviews

Stuvia customers have reviewed more than 700,000 summaries. This how you know that you are buying the best documents.

Quick and easy check-out

Quick and easy check-out

You can quickly pay through credit card or Stuvia-credit for the summaries. There is no membership needed.

Focus on what matters

Focus on what matters

Your fellow students write the study notes themselves, which is why the documents are always reliable and up-to-date. This ensures you quickly get to the core!

Frequently asked questions

What do I get when I buy this document?

You get a PDF, available immediately after your purchase. The purchased document is accessible anytime, anywhere and indefinitely through your profile.

Satisfaction guarantee: how does it work?

Our satisfaction guarantee ensures that you always find a study document that suits you well. You fill out a form, and our customer service team takes care of the rest.

Who am I buying these notes from?

Stuvia is a marketplace, so you are not buying this document from us, but from seller ExamsGuru. Stuvia facilitates payment to the seller.

Will I be stuck with a subscription?

No, you only buy these notes for $12.99. You're not tied to anything after your purchase.

Can Stuvia be trusted?

4.6 stars on Google & Trustpilot (+1000 reviews)

72042 documents were sold in the last 30 days

Founded in 2010, the go-to place to buy study notes for 14 years now

Start selling
$12.99
  • (0)
  Add to cart