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-   -   Glider down in a field in Angus (https://www.pprune.org/private-flying/481272-glider-down-field-angus.html)

BackPacker 30th Mar 2012 13:26


He is very happy as that was his 50 km flight to complete his silver badge.
Does an outlanding count for the 50km silver assignment? I would assume you've got to land at a "proper" place, for instance another gliding base, or at least a field which you declared in advance. Not just a field which happened to be underneath you once you are 50km from home base.

If not, you could just get yourself towed to 5500' altitude, glide in a straight line, find a field when you get below 500' and fulfill the requirement. (Assuming a 1:30 glide angle.) Where's the challenge in that?

Heston 30th Mar 2012 13:54

The rules stipulate the height above which you may not be towed befrore starting the 50K attempt. You must carry a barograph which is inspected after the flight to ensure compliance. Even with modern gliders 50K is a real acheivement for the improving pilot.

H

Piltdown Man 30th Mar 2012 15:12

Heston is spot on. The maximum difference between altitude of the airborne starting and the end landing point must not be more than 1% of the distance flown. A field landing is also more than acceptable, as long as it is far enough away. For those being launched by aerotow, the tug driver also has to say where and how high he dropped his victim off. A winch launch simplifies things.

Returning to the OP, a hill in the middle of a field is often quite a good thing. Land at the edge and roll up the hill to stop. Landing uphill also does a good job at killing any float. Ask pilots from Dunstable about that. As for crashed gliders, I've apparently been involved in lots of them. Concerned members of the public call regularly call the police to report an incident. It's quite good really because if you did actually spang it into the ground, it would be nice to found sooner than later. Generally though, it turns out to be a waste of police time.

I just hope nobody tells the press that gliders regularly "crash" into fields on purpose.

PM

piperboy84 30th Mar 2012 16:04

Well as you can tell I am somewhat unfamiliar with gliders and there operations, but am truly amazed at the utility of them being able to land it in a tiny/hilly field and get the wings off and back home so easy, I have a few questions, when re-installing the wings and re rigging does that have to be done by a certified airframe mechanic? does a glider have to have a certificate of airworthiness like powered aircraft or can the glider owner upon becoming proficient in the crafts systems work on/and remove and reinstall the wings and rigging themselves?,

thing 30th Mar 2012 16:12

They do have certs and the owner can rig and derig their own glider. Well anyone can rig and derig any glider as long as they've been shown the salient points. I had to derig the club K8 after my 50k downwind dash. It's suprisingly simple, gliders are designed to be quickly rigged and derigged precisely because they finish up in fields. Also at the end of the flying day at most clubs, personal gliders are put back in their trailers.

It's obviously sensible to get your rig checked by someone else who knows how to rig that particular glider.

Denti 30th Mar 2012 16:19

Nope, no licensed mechanic needed to pull it apart or put it back together if you mean the normal rigging out of the trailer or back in. Gliders are built and certified that way, it is normal for them to have the wings and tailplane removed or put back in. At least over here in germany they do have a normal certificate of airworthiness and are subject to normal part M maintenance.

Found a site with a one person rigging assembly which shows some pictures and videos about rigging, however i haven't used any product of that kind, rigging with two or three persons usually takes around 5 to 15 minutes.

BabyBear 30th Mar 2012 16:42

piperboy, it sounds like it is time you got yourself acquainted with gliding. It is an absolutely wonderful way to fly. IMHO the mistake is in trying to compare it to power, you can't, they are just different.

I found this Angus Gliding Club Web Site

BB

BackPacker 30th Mar 2012 20:33

Actually the rigging/derigging procedure is listed in the PILOT operating handbook of a glider, and (at least here in NL) common rigging issues, like the proper way to attach and lock the flight controls, are tested as part of the written exams.

So, yes, rigging and derigging is a very common task in the glider world, and is intended to be done by a pilot, not by a mechanic.

Denti 30th Mar 2012 20:49

True, it is a normal procedure covered in the POH. Do you mean it is tested during the license tests? Or do you need to do a written test for each new glider you fly?

Piltdown Man 30th Mar 2012 21:21


PM

BackPacker 30th Mar 2012 22:24

Denti, so far I've only done the written exams. There were a few questions in there about common rigging/de-rigging issues, mostly pertaining to control connections and the locking thereof. Things like correct usage of locking pins.

I would assume that an actual rigging/derigging, or at least a discussion of that, would be part of the practical exam, but I'm not there yet.

cats_five 31st Mar 2012 08:26

I don't remember it being in the Bronze exam in the UK, and at present that's the only exam we do - EASA looms. The person I brought my glider from showed me (we rigged, fiddled & derigged when I went to see it), I showed my syndicate partner. We also help rig & derig club gliders which where I fly are all modern glass gliders. We always do a positive control check after rigging, and club gliders get one each time they are DI'd.

BTW there are more gliding clubs in Scotland:
The Scottish Gliding Centre Official Website (Portmoak)
Cairngorm Gliding Club - Feshie
Highland Gliding Club (Easterton)
http://www.deesideglidingclub.co.uk/ (Aboyne)
Home Page (Dumfries)

However so far as I know only the first flies 7 days a week, weather permitting.

A and C 31st Mar 2012 08:39

As with all things that can kill you if you get it wrong it is a good one a to have someone look over the glider you have just rigged, mistakes in this area are rare but could be fatal.

Interestingly some of the modern powered aircraft like the Diamond's show their ancestry in the way the wings are attached, it is very easy to get the wings off with just a few control conections and two bolts to undo to get the spar pin locks out, the de- rig can be done very quickly once you have taken the fuel out of the wings.................that is if you don't decide to try to remove the spar pin locks with a hacksaw like someone tried to do on an aircraft I recently put back together!

cumulusrider 31st Mar 2012 10:57

On a typical modern glider such as a Discus or Ventus the spars slot through the fuselage and locate in the oposite wing. They are held in place with a single pin through both spars and safety clipped.
The tailplane is loctated on two lugs that operate the elevator at the rear and a spring loaded pin at the front.
All controls are automatically connected.

Tape up the gaps, DI and fly.
Simples.

The500man 31st Mar 2012 12:09


I don't think all the speculation on here is appropriate, not until the family of the pilot have been informed.

Please remember that this forum is read by the media.


That guy makes me smile. Oh and before I forget... A lot of nonsense being said here!
;)

WorkingHard 31st Mar 2012 12:20

Why does the glider arm of flying seem to work in kilometres when the rest of the UK uses statute miles or nautical miles please?

cats_five 31st Mar 2012 15:19

All the performance flights for badges and diplomas are in metric - meters of height gained, kilometers of distance flown.

Would you rather fly 50 km for your silver distance badge or 26.9978402 nm? They are the same (according to the Google calculator), but the former is less of a mouthful!

However we do use feet, knots and knots on the altimeter, asi and vario in the UK and the placard for my glider is marked in pounds and knots.

Denti 31st Mar 2012 19:50

Its different on the continent, ASI's are marked in km/h, V/S in m/s, altitude in meters, weights are in kg and so on. Same for most so called ultralights. However modern glass cockpit interiors for gliders display feet and FL as well if you have to fly into airspace that requires that (above FL100/130 in germany).

chrisN 3rd Apr 2012 03:18

I use a one-person rigging aid (to put the wings on and off) and it works fine if the ground is reasonably level. It takes slightly longer than if a competent helper is available, but still only 15 minutes or so to rig to the point that the airframe is ready.

Taping up the gaps (almost the last bit of the video clip above) to make for really clean aerodynamics, and putting in carry-on pilot equipment including logger, computer, programming intended route, etc., can take as long again – but most of that needs doing even if it is kept rigged in a hangar, plus a DI (daily inspection – like a walk round plus some bits).

DI is taught by clubs, and pilots have their log books signed to show competence, usually after learning to do it on a club glider. Other types one learns from others and/or the handbook. It is not part of any formal examination in the UK AFAIK.

I think the French invented certificate requirements and nomenclature for records distances and heights, hence the metric notation. It is not just gliding – ballooning and other aviation sporting achievements use them too. There is a clue in the name of the world body that governs it all – FAI (Fédération Aéronautique Internationale, "FAI - The World Air Sports Federation").

Chris N

cats_five 3rd Apr 2012 07:17

I flew my glider once without wing tape (too damp to get it to stick) and speed control was all over the place because of the noise.

AFAIK because of legislation changes pilots must now have a Bronze to do a DI without supervision, so no more signing off in the log book. However we do teach doing a DI. Each type of glider has it's own gotchas - or at least each type I've done a DI on.


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