Quantcast
AIRCRAFT HYDRAULIC SYSTEMS

Share on Google+Share on FacebookShare on LinkedInShare on TwitterShare on DiggShare on Stumble Upon
Custom Search
 
  
!    Aluminum trailing edge cap !    Aluminum or polyurethane and nickel abrasion leading edge strip Additionally, rotary rudder blades may have deicing provisions, such as electrothermal blankets that are bonded into the blade's leading edge. or a neoprene anti-icing guard embedded with electrical heating elements. Q4-17. What is the main advantage of rotary-wing aircraft over fixed-wing aircraft? Q4-18. What are the three types of landing gear used on helicopters? Q4-19. The directional control and antitorque action of the helicopter is provided by what group? AIRCRAFT HYDRAULIC SYSTEMS LEARNING OBJECTIVE: Identify the components of aircraft hydraulic systems and recognize their functions. The aircraft hydraulic systems found on most naval aircraft  perform  many  functions.  Some  systems operated by hydraulics are flight controls, landing gear, speed brakes, fixed-wing and rotary-wing folding mechanisms, auxiliary systems, and wheel brakes. Hydraulics has many advantages as a power source for operating these units on aircraft. !    Hydraulics combine the advantages of lightweight, ease of installation, simplification of inspection, and minimum maintenance requirements. !    Hydraulics operation is almost 100-percent efficient, with only a negligible loss due to fluid friction. However, there are some disadvantages to using hydraulics. !    The possibility of leakage, both internal and external, may cause the complete system to become inoperative. !    Contamination by foreign matter in the system can cause malfunction of any unit. Cleanliness in hydraulics cannot be overemphasized. COMPONENTS OF A BASIC SYSTEM Basically, any hydraulic system contains the following units: !    reservoir to hold a supply of hydraulic fluid !    pump to provide a flow of fluid !    Tubing to transmit the fluid !    selector valve to direct the flow of fluid !    An actuating unit to convert the fluid pressure into useful work A simple system using these essential units is shown in figure 4-21. You can trace the flow of fluid from the reservoir through the pump to the selector valve. In figure 4-21, the flow of fluid created by the pump flows through the valve to the right end of the actuating cylinder. Fluid pressure forces the piston to the left. At the same time, the fluid that is on the left of the piston is forced out. It goes up through the selector valve and back to the reservoir through the return line. When the selector valve is moved to the position indicated by the dotted lines, the fluid from the pump flows to the left side of the actuating cylinder. Movement of the piston can be stopped at any time simply by moving the selector valve to neutral. When the selector valve is in this position, all four ports are closed, and pressure is trapped in both working lines. 4-19 ANF0421 PRESSURE LINE SELECTOR VALVE IN "DOWN" POSITION RETURN LINE SELECTOR VALVE IN "UP" POSITION WORKING LINES HAND PUMP ACTUATING UNIT RESERVOIR Figure 4-21.—Basic hydraulic system, hand pump operated.



Aviation News
FAA Seeks Comments on Aircraft Emergency Operations
The FAA today issued a Federal Register Notice seeking public...
faa.gov
Overhaul Support Services to Improve Black Hawk Weapons System
Overhaul Support Services has received a $7.4 million firm-fixed-price contract...
aviationtoday.com
Search and Rescue: Extreme Maritime Challenges
S-70B Seahawk launches as a refueling probe is transferred while...
aviationtoday.com
Northrop Grumman Achieves B-2 Software Upgrade Milestone
[Avionics Today April 24, 2014] Northrop Grumman has completed the Preliminary...
aviationtoday.com
Rolls-Royce to Support V-22 Engines
Rolls-Royce has received $39 million to support AE 1107C engines...
aviationtoday.com
Rockwell Collins Reports on Project Missouri Radio Test
[Avionics Today April 23, 2014] Rockwell Collins released a statement about...
aviationtoday.com
Regional Scan: Latin America
Avianca Upgrades A320s With ROPS Flight display featuring the Airbus...
aviationtoday.com
Kestrel Makes sUAS Automation Progress
[Avionics Today April 23, 2014] Lockheed Martin's announced progress with its...
aviationtoday.com
Regional Scan: Middle East & Africa
Thales, Qatar to Develop OPV-A Thales, Qatar Air Force officials...
aviationtoday.com
Boeing Stands Out Among Lockheed, Northrop 1st Quarter Results
[Avionics Today April 23, 2014] Three of the world's largest aerospace...
aviationtoday.com
QF16: Unmanned Viper Takes Flight
  A pilotless F-16 during flight. Photo: Boeing The U.S....
aviationtoday.com
The Future of Unmanned Flight
Just five years ago, the idea of the futuristic aircraft...
aviationtoday.com
Sikorsky Flies Optionally Piloted Black Hawk
[Avionics Today April 22, 2014] Sikorsky Aircraft Corp. announced a successful...
aviationtoday.com
Time to Rethink UAS in the US
The Federal Aviation Administration’s (FAA) treatment of very small UAS...
aviationtoday.com
FAA Announces First UAS Test Site Operational
The North Dakota Department of Commerce is ready to start...
faa.gov
Mercury Systems to Provide UAS Processing Modules
[Avionics Today April 21, 2014] Mercury Systems announced a new $3.2...
aviationtoday.com
Airbus Corporate Foundation, JetBlue and Luftfahrt ohne Grenzen send humanitarian aid to Haiti
Ten tonnes of medicine, sheets and blankets shipped on JetBlue...
airbus.com
Northrop Grumman Opens Aircraft Integration Center
[Aviation Today April 16, 2014] Northrop Grumman announced its dedication of...
aviationtoday.com
L-3 TCAS System Selected for KC-46A
[Avionics Today April 18, 2014] Boeing has selected the T3CAS Integrated...
aviationtoday.com
F-35 to Make First U.K. Flight in July
[Avionics Today April 18, 2014] This summer's Royal International Air Tattoo show...
aviationtoday.com
 


Privacy Statement - Copyright Information. - Contact Us

comments powered by Disqus

Integrated Publishing, Inc.
9438 US Hwy 19N #311 Port Richey, FL 34668

Phone For Parts Inquiries: (727) 755-3260
Google +