How they Fly?

Skids or Wheels ?

Wrote for the Helicopter History Site by David Gibbings and Taylor Cox


helicopter skids
Helicopter with skids
helicopter wheels
Helicopter with wheels


Skids are used mainly because they weigh less than wheels.

On larger, more powerful helicopters, wheels are used because the utility and convenience can be more important than the savings in weight. In order to move a skid-equipped helicopter on the ground, one has to attach a set of ground-handling wheels, jack up the helicopter, and roll it (into the hangar for maintenance, for example).

If your helicopter already has the wheels as a permanent feature, is more convenient to move around when the engine is shut down or the pilot has wandered off.

The design decision between retractable or fixed wheels becomes a trade-off between the complexity/weight but increased aerodynamic efficiency of retractable gear and the simplicity of fixed gear (and increased drag/reduced efficiency).

It really depends on the primary use of the helicopter; if you are logging, skids make sense because you can lift larger loads and are more concerned with hovering performance. If the primary mission is medevac or air transport, retractable wheels allow greater speed and increased fuel economy over long distances.

So the main factor is one of simplicity, a skid landing gear needs very little maintenance but there is a drawback. Ground handling is a bit more difficult, so it follows that it is the smaller machines that use them. Once you get above say 8,000lb or 4 tons, you really need some built in wheels to move the thing around, a Bell UH-1 must be somewhere near the practical limit, especially if your trying to get it under cover in a hurry.


Latest News

FlightSafety Academy at Vero Beach, Florida

Israel’ Orbit to Provide Satcom Terminals

Leonardo New Orders Ahead of LABACE 2017

Bell 412EPI Landing Gear for Gross Weight Increase

Waypoint Leased AW139 to Hevilift Australia

Coast Guard Miami Dolphin Rescued Navy Pilot

Idaho’ Bell 429 with New Medical Interiors

Russia to Test Ka-226T in Iran

Sponsors






Promote Your Services Here



Share this page on
           

Sponsored by


Promote Here




Flying a helicopter
Accidents
Acronyms
Jobs
Airliners
Airshows
Future helicopters
For Sale
Contact


Database

46835 serials
19299 photos
3956 heliports


Share this page on