Re: Skyting demolition
Posted: 2019/10/31 14:07:49 UTC
http://www.ushawks.org/forum/viewtopic.php?f=2&t=818
Peter (Linknife) Birren
- a damn good reason
- pilot and crew with shit sufficiently together
- So please do tell us whom you were using for a driver.
- It's amazing what you can accomplish with an 0.8 G Infallible Weak Link. And the best way to precisely hit the figure is to use a single loop of 130 pound Greenspot Dacron Trolling Line, install it on one end of a bridle, and declare it to be 0.8 Gs. Or, if your operator specifies 1.0 Gs, declare it to be 1.0 Gs. Or, if they're still breaking too inconveniently, install another one on the other end and call the combo 2.0.
- And here I was thinking that you'd developed the most effective release known in this edge of the solar system.
- Ever hear about a wimpy, wallowing takeoff from "running into" the line on a dolly or platform launch?
- Lessee... Both ends IMMEDIATELY know there's a serious problem and that this bird ain't gonna fly. We have time to notify the driver to stop but:
-- that's not gonna be soon enough
-- neither end has the ability to terminate the tow until aft the dope on the rope has fallen down and slid on the pavement
Peter's fuckin' Miracle Release might as well have been a hook knife velcroed onto the starboard downtube.
- So the car's rolling at not much faster than wimpy running / below stall speed, the observer immediately calls abort, but we've still gotta worry about the back end stuff.
12-01125
http://farm9.staticflickr.com/8809/18382342111_f94a5114a9_o.png
One of those high complexity / really dangerous Rube Goldberg systems with scores of options for fucking thinks up.
Peter (Linknife) Birren
Peter Birren - 2011/11/25 15:34:07 UTC
Tad, have you ever been dragged on a blown foot launch with too strong of a weaklink? I have, sideways. It ain't fun. Some years later when more had been learned and things changed, I messed up again in similar fashion, the .8G weaklink broke and kept me from being dragged as before. As well, one of our newer pilots on his first day out static towing, had a wimpy, wallowing takeoff from "running into" the line. The observer called for the car to stop, pilot slid in on his belly and the weaklink broke allowing him to stop quickly without the glider doing a ground tumble. Had the weaklink been stronger...
But I guess empiric evidence like this doesn't count for anything in your world.
No, Peter. Only total idiots foot launch when they're operating from roads/runways. If you're foot launching you better have:Tad, have you ever been dragged on a blown foot launch...
- a damn good reason
- pilot and crew with shit sufficiently together
Too strong a weak link. Anything over the 0.8 G FAA legal minimum for AT....with too strong of a weaklink?
You blow the foot launch AND you manage to get the glider turned sideways. Keep up the great work.I have, sideways.
- Would've been a total blast for me. Got a video?It ain't fun.
- So please do tell us whom you were using for a driver.
Donnell had scientifically proven beyond the slightest shadow of any reasonable doubt that the rope breaks and premature releases which had been the greatest dangers for tow launches were actually our only real hopes for surviving the weekend.Some years later when more had been learned and things changed...
Yes. You foot launched....I messed up again in similar fashion...
The sweet spot. The minimum the FAA permits and the maximum Donnell permits....the .8G weaklink...
Succeeded....broke...
- Shortened the period during which you were a totally helpless dope on a rope....and kept me from being dragged as before.
- It's amazing what you can accomplish with an 0.8 G Infallible Weak Link. And the best way to precisely hit the figure is to use a single loop of 130 pound Greenspot Dacron Trolling Line, install it on one end of a bridle, and declare it to be 0.8 Gs. Or, if your operator specifies 1.0 Gs, declare it to be 1.0 Gs. Or, if they're still breaking too inconveniently, install another one on the other end and call the combo 2.0.
- And here I was thinking that you'd developed the most effective release known in this edge of the solar system.
Yeah, why bother with a complex and thus dangerous platform rig when a two thousand foot polypro static line works just as well and more reliably 'cause of its simplicity.As well, one of our newer pilots on his first day out static towing...
- What an asshole. And after all the top quality instruction and prep he'd had. Go figure....had a wimpy, wallowing takeoff from "running into" the line.
- Ever hear about a wimpy, wallowing takeoff from "running into" the line on a dolly or platform launch?
Why didn't he just freewheel the winch? Oh, right. You assholes just tie a two thousand foot length of polypro to the trailer hitch and have no capability of guillotining it 'cause it's too thick for a Linknife to handle.The observer called for the car to stop...
- Pilot? Donchya hafta have gotten something actually airborne before you can apply for consideration for pilot status? (Not at the Reel Pilots Association apparently.)...pilot...
And on the pavement of the Richard Bong Recreation Area runway, right?....slid in on his belly...
- Great job, Infallible Weak Link. You sensed that the towline tension had exceeded the limit for safe operation and infallibly and automatically released the glider from tow. They don't call you Infallible for nuthin'....and the weaklink broke...
- Lessee... Both ends IMMEDIATELY know there's a serious problem and that this bird ain't gonna fly. We have time to notify the driver to stop but:
-- that's not gonna be soon enough
-- neither end has the ability to terminate the tow until aft the dope on the rope has fallen down and slid on the pavement
Peter's fuckin' Miracle Release might as well have been a hook knife velcroed onto the starboard downtube.
Really hard to beat quickly. The kid dashed out into the street and the driver quickly stomped on the brake pedal. Unfortunately we're defining quickly as three to five seconds so the results weren't all we'd hoped for....allowing him to stop quickly...
- So the glider didn't have wheels? 'Cause otherwise why would one worry about it doing a "ground tumble"....without the glider doing a ground tumble.
- So the car's rolling at not much faster than wimpy running / below stall speed, the observer immediately calls abort, but we've still gotta worry about the back end stuff.
A Tad-O-Link? I shudder to think about. Tad-O-Links NEVER break when they're supposed to. Tad conned Paul Tjaden into using one at Zapata and he LOCKED OUT. No fuckin' WAY it safe the towline tension hadn't exceeded the limit for safe operation. Good thing he wasn't climbing hard in a near stall situation. Just look what happened to Zack Marzec with a proper Infallible 0.8.Had the weaklink been stronger...
No, it counts TONS. Please keep it coming. And I'd be more than happy if you could put up the videos.But I guess empiric evidence like this doesn't count for anything in your world.
12-01125
http://farm9.staticflickr.com/8809/18382342111_f94a5114a9_o.png
One of those high complexity / really dangerous Rube Goldberg systems with scores of options for fucking thinks up.