HAWK21M From India, joined Jan 2001, 31660 posts, RR: 56 Posted (9 years 11 months 1 week 6 days 6 hours ago) and read 6981 times:
Whats the Advantage of a Towbarless v/s a Towbar Towing vehicle if there is Any.
I'm very familiar with A towbar Vehicle,but have not seen a Towbarless towing vehicle in Action.Anyone having detailed pictures on how it works.
Air2gxs From , joined Dec 1969, posts, RR:
Reply 6, posted (9 years 11 months 1 week 4 days 21 hours ago) and read 6715 times:
On the towbarless I have used:
You drive up and center up on the gear (chocks out)
Drive the tug forward until contacting the tires with the cradle (a light on the dash illuminates)
Close the cradle. Again a light illuminates when closed and locked.
Lift the nose until, you guessed it, a light illuminates.
I preferred using towbarless because I felt I had more control of the tug/aircraft. I insisted on it when pulling into, or out of, a crowded hangar or parking area.
BryanG From United States of America, joined May 1999, 431 posts, RR: 0
Reply 7, posted (9 years 11 months 1 week 4 days 21 hours ago) and read 6712 times:
I've never, ever seen a TBL used in the USA. They must be extremely rare here.
Most people here are used to seeing "pushbacks," as we call towbar-using machines. That betrays the typical scope of their jobs... merely to back the aircraft up away from the gate and turn it around. A TBL system would be terribly complex if that's all you need to do.
Air2gxs From , joined Dec 1969, posts, RR:
Reply 8, posted (9 years 11 months 1 week 4 days 18 hours ago) and read 6692 times:
Actually a towbarless system is less manpower intensive, safer (no towbar to shear) and holds the aircraft under more positive control. The pushes appear to be smoother and can be done faster.
Most airlines in the US already have a large capital investment in tug/bar combinations, why change if you don't have to? We have a couple in our SDF operation because we need them at certain spots. And as I said earlier: We just love them for going into and out of traffic.
Dalmd88 From United States of America, joined Jul 2000, 2532 posts, RR: 14
Reply 12, posted (9 years 11 months 1 week 4 days ago) and read 6594 times:
Towbarless tugs are used in the US. DL has two in ATL. Don't look for them at the gates though. They are rarely used for pushback. They are kept busy moving airplanes to and from Maintanence or remote parking areas. This is what they are best at since they can travel at taxi speeds. I believe CO also has some at EWR.
DAL7001 From United States of America, joined Jun 2004, 65 posts, RR: 0
Reply 21, posted (9 years 11 months 4 days 17 hours ago) and read 6260 times:
Actuay we at DL have three in ATL. We refer to them as supertugs which are made by Goldhoofer. We us them mainly at night to move a/c to/from mtc areas to their gates. We also do alot of gate/gate movements prior to the morning push.
Mr.BA From Singapore, joined Sep 2000, 3423 posts, RR: 22
Reply 22, posted (9 years 11 months 4 days 6 hours ago) and read 6211 times:
Actually I was wondering about the physics behind this tow-truck thing. Say you tow a fully laden B747 which has mass about 395,000kg you'll probably need a force of about 500000N to get it moving... how is it possible for the truck to produce such a force without the tires screeching the ground? Amazing...
Klaus From Germany, joined Jul 2001, 21388 posts, RR: 54
Reply 23, posted (9 years 11 months 4 days 5 hours ago) and read 6208 times:
The "Supertugs" carry the nose landing gear, they don´t just drag it. That´s the trick. They grab the gear and lift it up. As a consequence, they don´t need much ballast weight (if any), since the plane will already supply it.
Conventional tugs come with significant amounts of ballast to get enough traction.
CanadianNorth From Canada, joined Aug 2002, 3389 posts, RR: 9
Reply 24, posted (9 years 11 months 2 days 10 hours ago) and read 6069 times:
You could always do it YXY style where the aircraft are positioned far enough back from the terminal so the bridge is streched out a little more then come time to leave its pulled in and swings to the side, leaving just enough room for the 737 to do a very tight right turn and taxi out all on its own power. And for towing to/from the hangars the only people that do that here are Air North and they use a large forklift type thing that they rigged up to tow their HS748s and B732s between the terminal and their barns.
Just thought I'd throw in a story from the north
What could possibly go wrong?
: You could always do it YXY style where the aircraft are positioned far enough back from the terminal so the bridge is streched out a little more then
: Now, FMC is producing towbarless pushbacks. As a result, it will be more and more common in the States. Another advantage of thos push: you need only
: I swear I've seen one of these towbarless tugs in SFO many years ago bring a UAL 742 to our gate from MX to the hanger.. whether they stilll have them