Autos with wheels
Joined: Feb 2001
Posts: 579
Likes: 0
From: Canada
I agree with Nick about landing on rocks, its alot easier with tires and oleos than on skids. It is very easy to break skid gear; especially on Bell mediums.
John: The 76 pictured didn't run into trouble with clearance, it succumbed to a large vertical acceleration. On a happy note; it is flying again.
When I used to go to FSI for 76 training they had a couple of instructors which espoused the values of aerodynamic breaking. Aerodynamic Breaking in a 76 is VERY BAD, the boom will make contact with terra firma at appx 15 degrees nose up and any combination of downward collective accompanied with aft cyclic could cause the Main rotor blades to contact the vertical pilon, with expensive results.
John: The 76 pictured didn't run into trouble with clearance, it succumbed to a large vertical acceleration. On a happy note; it is flying again.
When I used to go to FSI for 76 training they had a couple of instructors which espoused the values of aerodynamic breaking. Aerodynamic Breaking in a 76 is VERY BAD, the boom will make contact with terra firma at appx 15 degrees nose up and any combination of downward collective accompanied with aft cyclic could cause the Main rotor blades to contact the vertical pilon, with expensive results.
Joined: Apr 2003
Posts: 3,012
Likes: 1
From: USA
IHL is quite right, for all helos, "aerodynamic braking" is simply a bad idea.
The decel developed by the rotor is peanuts while still on the ground. If you must stop, either pull back into a hover to stop, or put on the brakes (which develop 10 times the decel of the cyclic). Do not keep ground contact and pull the stick back.
The decel developed by the rotor is peanuts while still on the ground. If you must stop, either pull back into a hover to stop, or put on the brakes (which develop 10 times the decel of the cyclic). Do not keep ground contact and pull the stick back.
Joined: Feb 2005
Posts: 340
Likes: 1
From: KPHL
As with all rules, there are a few exceptions.
The H46 (and maybe the Chinook) isn't concerned with aft clearance during aerodynamic braking, within reason. The benefits of aerodynamic braking are more to do with keeping the wheel brakes cool. Although at the higher speeds, aerodynamic is much more effective even after an engine failure.
BTW Nick, congrats on the new position. I'm sure you'll enjoy it there and will establish yourself in biz jets like you have in helicopters.
The H46 (and maybe the Chinook) isn't concerned with aft clearance during aerodynamic braking, within reason. The benefits of aerodynamic braking are more to do with keeping the wheel brakes cool. Although at the higher speeds, aerodynamic is much more effective even after an engine failure.
BTW Nick, congrats on the new position. I'm sure you'll enjoy it there and will establish yourself in biz jets like you have in helicopters.
