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To reduse drag and make the airplane more streemlined.

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Q: Why do large aircraft have retractable undercarriage?
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Why Sequence Valves Are Used In Aircraft Having Retractable Undercarriage?

Sequence valves are used in aircraft having a retractable undercarriage because there is a certain sequence to the way things must be done. For example, before the landing gear can come down, the door on the undercarriage must be opened for it.


What is landing gear for a plane?

The landing gear of an aircraft are the fixtures on which the aircraft taxi's, take's off and lands and can be in the form of wheels, or pontoons (on float planes for water take-off and landing).The undercarriage of an aircraft can also be fixed or retractable. Large commercial aircraft such as a Boeing 747 for example will have retractable undercarriage, creating a far more aerodynamic airflow over the fuselage. On a much smaller scale, some aircraft such as Cessna 172's have been manufactured in both fixed and retractable gear "RG" models. Generally the very light aircraft will have fixed landing gear.AnswerThe primary role of the landing gear is to absorb the shock of landing the airplane as it comes in contact with the ground. It is designed as a shock attenuation device. It absorbs the shock and slows the vertical drop of the airplane.


Where is retractable gear on helio courier?

The Helio Courier is a fixed gear aircraft; no retractable gear.


What types of low wing single engine planes are there?

Many. - Conventional propellor aircraft, pushers (propellor atback), jets, canards ( main wings at back) fixed undercarriage aircraft in all those categories, retractable u/c in all those categories, gliders, trainers with side by side or tandem seats, cropduster types, and many others.


What is the event called when an aircraft takes off and scrapes the tail undercarriage?

It's called tailstrike.


What is undercarriage?

a wheeled structure beneath an aircraft, typically retracted when not in use, that receives the impact on landing and supports the aircraft on the ground.the supporting frame under the body of a vehicle.


Why do most small aircraft not have retractable landing gear?

because light aircraft use the basic hydraulic system for its operation so its not necassary to be there


What does gliders run on?

Gliders have a main wheel under the fuelsalge of the aircraft. This wheel may retractable.


Do aircraft have gears?

Retractable wheels on aircraft are often called "landing gear", and some of the engine designs used in aircraft can contain a gear box. But gears as they look like in cars aren't used in aircraft.


What is the definition of a complex type aircraft?

A "complex aircraft" is an aircraft which has a constant-speed propeller and/or retractable landing gear. The FAA requires pilots to attain the "complex aircraft" license endorsement before they are permitted to act as "Pilot in command" for such aircraft.


What is the opposite of cockpit?

Where the cockpit is near the front, the opposite end of an aircraft is the tail. (Where the cockpit is on the top, the opposite is the undercarriage. In a passenger aircraft, the opposite of the cockpit or control area is the passenger area, or cabin.)


What are the steps to converting a retractable gear airplane to a fixed gear airplane?

There is nothing to stop you from flying a retractable gear airplane with the gear always down. If the landing gear is permanently fixed in the extended position, the FAA requires that the gear-retraction lever (or switch) be removed or placarded as "inoperative". Additionally, retractable-gear aircraft have a maximum speed permissible with gear extended (VLE) obviously, the aircraft would be permanently limited to this speed.