Dartmoor Gliding News - Wednesday 2nd April 2025

Following the 1 April tomfoolery we could get back to serious stuff for the Wednesday Wavers.  Meteorology can be a complicated subject but here is a simple explanation of what's occurring, as they say on Barry Island.  The run of fine weather had been caused by high pressure over the United Kingdom.  Its slow movement across had caused a gradual shift in the wind direction until on Wednesday it was coming from the east.  A stable atmosphere.  A decent turn of wind speed and Voila!  Mountain Lee Wave.

Unsurprisingly, the DGS Google and WhatsApp groups had been chattering away with analysis of Skysight and RASP predictions.  Queries over the BBC weather forecast and how realistic the forecast for gusts would be.  The excitement had spread as far as RNAS Culdrose and Seahawk GC members prepared to join the Wavers.  Note that I have had to drop the reference to Wednesday as the CFI is getting tetchy that wave only seems to happen on a...certain midweek day!

There it is.  Lift marked in bright orange between the airfield and the ranges. Perfect!

The wave cross section for 0900 showing wave extending vertically all the way to 30,000 feet. 
Whoo Hoo!
Mike Jardine and I were duty and as ever thinking about our visitors for the day.  Would it be flyable for visitors or would rotor over the site prevent us, well me actually, delivering a good introduction to our sport?  Normally one can never tell until the day but on this instance both One Day Courses were cancelled on Tuesday so that they could rebook when the conditions were better for introductory flights.

The day dawned with an early start for the Wavers with privateers rigging to try for an early launch.  Alas, Merrivale (surface to 10,000 feet AMSL) and Willsworthy (surface to 4,500 feet AMSL) firing ranges were active today.  So club gliders without a moving map would have to stay to the east of the A386, the Tavistock to Sourton Road.  When I arrived and opened the gate the rotor was roaring overhead but later when the Duty Instructor arrived it was calm indicating that the wind strength must be changing and altering the wavelength of the wave.

The privateers fielded a Libelle, a Discus, a DG300, a Mini-Nimbus, an Open Cirrus, a Kestrel 19 and a K-6CR.  The Duty Instructor waited to see the results of the early launches and whether to field none, one, or two K-13s.  Andy was first up into the rotor and lots of sink in the down wave for the longest flight of the day; five minutes.  John Allan tried and managed three minutes as did Richard.  Time for a break and a cup of tea.  Then Andy tried again and much later John, who broke a weak link in the rotor.  All were very short flights.  On the basis of the results of the morning's flights it was decided to scrub the day and pack the toys away.

The early birds waiting for the right moment to launch
Andy and Phil prepared their trailers and left the site ready to head to Lleweni Parc (Denbigh) in North Wales at the weekend.  I will do the same on Saturday ready to head to Talgarth in the Black Mountains in South Wales for the week.

Phil ready to depart with his "Swedish" style trailer shares a word with Steve Lesson
Was that the end of the day?  No,  several club gliders needed checking, and small jobs doing, before bringing them back on line.

Adam works on the canopy emergency release mechanism on the Puchacz
One Day course candidate John Thorpe, even though he wasn't going to be able to fly, came to the club to witness proceedings and had a good introduction to what he would be doing when he rebooks.  We also welcomed Raymond Staines, who had flown with us some ten years ago, who arrived and promptly joined the club.  I gave him a walk round and an introduction to the Wavers and we made good progress on his introductory check list, as I am his "buddy".  He also had a good look at his "Welcome pack".

During day the Colin was preparing the fuselage of CCY for paint, masking it and using a block and tackle to lift it out of its belly dolly ready for spraying.  Inevitably there was a job for him in the hangar too.

Colin replaced part of the lap belt in the rear seat of K-13, FGR.  Its the little things that count.
John Smith continued to make progress on the new launch point bus assisted by a selection of members.  DB made progress on the gliding equipment trailer to accommodate the longer strops that are now recommended by Skylaunch.

More tea was drunk, lunch consumed, and the hangar packed.

So a lovely day, but with fierce rotor and strong wind.  Unfortunately the Wavers were unsuccessful on this occasion.  But as our readers know, "never say never to Dartmoor Wave".

Thanks to all who turned up for an early start to help launch the early birds and the trainees; Julia and Victor, also Malcolm, Dave Archer, and Steve Lesson who helped about the club.

The Chairman was missing, probably frustrated at not being present while stuck in Plymouth waiting for his car to be ready after work on it at the garage.

The Chairman's view of the day's proceedings
Roll on Saturday, as we have five club gliders back on line.  However, on an initial look we might be for more of the same with perhaps stronger winds.  There is always work to be done around the site and lectures to be delivered.

Gavin Short

Dartmoor Gliding News - Sunday 30th March 2025

The morning greeted the early arrivals with low cloud. But as the forecast was for the cloud to lift and leave us with clear skies and a moderate NW breeze we set about getting things ready to fly.

Once the cloudbase was high enough, first into the front seat was Freddie Purkiss. Five flights during the day including a practice launch failure sees him well on his way to achieving his aims.

Freddie doing hid pre-flight checks.
Today's duty IFP Steve Fletcher had two visitors to fly. One was booked in and the other arrived unexpectedly. First visitor was Peter Timmoney arrived from Plymouth with his wife. Peter enjoyed three short flights with Steve.

Peter being briefed by Steve.
The second visitor was Colin Easton. An ex Dockyard Drawing Office worker also from Plymouth enjoyed two slightly longer flights with Steve.

Colin Easton and Steve.
Whilst Steve was flying the visitors I test flew K8 GDK after rigging post ARC.

Getting ready for the test flight.
When Steve had finished with the K13 it was time to resume training. New junior Edward Nicholson who wants to become a RAF Engineer settled into the front seat. Following his introductory flights last week it was time for hands on and was soon getting to grips with coordinated turns and trimming the glider during flight.

Edward excited to start his training.
An old member returned today using a voucher to re-introduce himself to flying. Matthew Stone enjoyed three flights with me. By the third he was doing everything showing how little he had forgotten.

Matthew happy back in the front seat.
Brent Tor.
Thank you to Phil Hardwick and Ed Borlase for all the winching today who under their guidance saw George Purkiss do the majority of the launches ready to eventually be cleared to drive the winch.
The longest flight today was only 10 minutes, but all enjoyed what flying was done.

Peter Howarth

Dartmoor Gliding News - Wednesday 26 March 2025

The Wednesday Wavers have been busy already this week.  Readers may recall that our resident doctor, Robin Wilson, had procured a defibrillator for the club.  Members have been briefed, and it is deployed in the Volvo (people carrier) when we are flying, so it is readily available.

Although defibrillators talk one through the process nowadays, to be more effective DGS members required some training.  That training was arranged for Monday afternoon at Lamerton Sports and Community Centre.  It was challenging to get there with roadworks and diversions on the road from Tavistock to Lamerton but almost all managed.

CPR and Defibrillator Training by Devon Air Ambulance Charity at Lamerton Hall

The training was conducted by a paramedic from the Devon Air Ambulance.  All tried their hand, led from the front by Andy.  The statistics are compelling; if you have a cardiac arrest (i.e. your heart stops) rather than a heart attack, the UK survival rate is just 7.8%.  If you have a defibrillator to hand the survival rate jumps to 50% - 75%.

Disappointingly 7 in 10 of the population will try and give CPR (cardiopulmonary resuscitation) but only 1 in 10 will attempt to use a defibrillator.  What 17 people from Lamerton village and eight pilots from DGS found out is that the use of a defibrillator is very straightforward.  The machine talks you through every step of the way.  It won't let you shock anyone inadvertently or do anything untoward.  So even glider pilots should be be able to use it.

Thanks to Stevie Downing (the Nightowl's better half) for arranging this.  The Nightowl will register our defibrillator so its availability (when we are flying) will be known.  To find a defibrillator near you, use the Defib Finder website, which is powered by the Circuit, a national defibrillator network, and enter your location to see nearby registered defibrillators.  Until DGS acquired ours the nearest defibrillator was in at Lamerton Hall (Sports and Community Centre).

Wednesday dawned a mild, clear day that warmed up rapidly.  The Wednesday Wavers were soon seen shedding thermal layers and enjoying the very pleasant spring sunshine.  The weather brought a number of privateers out, so much so that the club's Astir CS77 wasn't required by the solo pilots today.  At an early brief we welcomed Jake Matthews, another displaced Seahawk GC pilot, due to the hangar persisting situation at RNAS Culdrose.

Jake is not new to Brentor, he was last here eight years ago, so I took him on a quick tour and showed him the changes since then.  He was scheduled to have an orientation and check flight with Mike Jardine the Duty Instructor and of course the inevitable practice launch failure.   Jake is a Flight Instructor (Sailplane) at Culdrose, has a PPL and his own power aeroplane, and flies professionally for Skybus.  So if you fancy a trip to the Isles of Scilly, Jake is your man.

The spring sunshine brings out the privateers; a Mini Nimbus, a Club 205 Libelle, and the mighty Kestrel 19 in the background.
The club's popular Astir CS77 wasn't needed today
Mike had a good 36 minutes soaring with Julia before continuing her circuit planning practice later in the day.

Julia was initially the only trainee on the airfield so she had Mike Jardine's undivided attention and made good use of the first flight for some soaring before taking two subsequent flight to work on her circuit planning.

The Twin Astir syndicate was active today with Phil taking Robin on three short flights whilst Malcolm made some longer solo flights in between their sorties.

Steve Fletcher was lucky enough to get away early in his Open Cirrus:

"At first the thermals died out at 1,800 feet QFE but after about an hour I experienced better ones to 2,200 feet, and eventually 2,400 feet before topping out at 2,700 feet.  Unfortunately, some of the best thermals were close to the firing ranges that were active today.  The best thermal of the lot was over the furze swaling on Blackdown with lift of 8 up, but pretty rough, and you had to have all the vents closed!!  A great day.  I could have stayed up longer but needed feeding."

Evidently Steve's hunger wasn't that urgent as he stayed up for 2 hours 11 minutes and earnt himself "Man of the Match".

Joining us for the day was Jake Matthews from Seahawk GC, taking a 45 minute soaring flight to familiarise himself with the airfield and the local area. 
Visitor James Smith prepares for his flight with Gavin.  Soaring bucket hats were very much the order of the day as the sun was quite powerful.
I welcomed visitors James Smith and Alexandra Geldenhuys.  Alex had bought James a double trial flight as a birthday present to celebrate the big day - today.  It was quickly done.  Earlier in the week, as duty BI, I checked my dance card to see that it was empty.  However, Alex bought a voucher on Monday and booked the flights on Tuesday ready for James to enjoy them on Wednesday.  They had a good drive up from Falmouth and enjoyed a relaxed day with us in the glorious sunshine.

James makes bespoke and custom modern furniture whilst Alex, who hails from South Africa, until recently was the director of her company importing olive oil from Portugal and coffee from the Caribbean.  Very James Bond, who of course as the cover story went worked for Universal Exports!

James enjoyed two extended flights.  Sadly the thermal activity didn't permit him as much time as I would have liked on the controls but he gained an appreciation of the sensitivity and small control movements required in a thermal.  On the second flight we were to the north of the airfield and witnessed the launch of the K-13 and Jake Matthews' practice launch failure.  It was stunning, literally a real bird's eye view.

After struggling to make his newly installed Flarm work Ed contacted NABOYS and they agreed with his (our) diagnosis.  They will take it back to investigate the fault.  Fingers crossed for a good result soon.  His patience today was rewarded.  Despite launching later in the afternoon he managed a 58 minute flight in EWO.

Ed prepares to fly in his K-6, EWO. Will his next flight be with a working Flarm?
The Twin Astir emerges from its T-hangar ready to take its syndicate members aloft
Malcolm's meanderings during his 1 hour 11 minute solo flight in the local area
Mike Bennett took a couple of flights in his Libelle to blow away the winter cobwebs.  Privateers Peter and John Allan flew their own gliders for some local soaring; Peter was very happy with his 1 hour 38 minutes aloft.
The east end launch point with gliders ready for flight, before the furze swaling started
After James' flights Alex decided that she wanted to fly too and purchased a single flight voucher.  She needed no encouragement from me as it turns out that she wasn't a first timer to "Free Flight" (in gliders) as she has flown briefly at Feshiebridge, in Scotland, and had a forty minute flight at RNAS Culdose.  The winch launch was however, definitely a new experience for her.

Alex decided she wanted to fly with Gavin too!
Although our flight together was shorter than both of James's two flights Alex enjoyed that the Puchacz (Eagle Owl) was joined by several birds of prey while I worked hard to climb in the thermal that Ed was marking several hundred feet above us.  Alas gravity won, as the Puchacz two-up, is half the weight of Ed in his K-6.  That's my excuse and I am sticking to it!

After the first swaling fire was extinguished a second fire was lit on Blackdown.  John Allan flew into to the updraft.  He commented:

"It made for a rather different and powerful thermal, with over 10kts in places.  You certainly noticed the lift when you flew into it!!"

the second set of furze swaling underway
Throughout the day John Smith continued to work on the City Bus conversion into Zack's Shack as the new west end launch point.  At the morning brief the Duty Instructor told John that he could come up at any time and jump the queue.  This also applied to our BGA Inspector Colin.  Sadly neither took up the standing offer.
 
Late in the afternoon another wanderer, David Moult, arrived after having also gone walkabout in Australia (the other member who has been walkabout being our CFI, Rick Wiles).  We also welcomed back David's distinctive orange toweling hat.  Who can have forgotten that hat?
 
The Duty Instructor rose to the challenge and attempted to dust off David's cobwebs after his protracted absence.  Mike is definitely getting into his Treasurer's role as he ensured that David had filled out a membership form and paid his membership fees for 2025/2026 before leaving the field.
 
Another David, DB, flew with both Mike and I in the K-13 and Puchacz respectively.  His flight with me was a hangar landing as sadly the day was drawing to a close.

Steve Fletcher's view of Peter in his Kestrel 19
Peter then cropped Steve's photo so that our blog readers can admire the Kestrel in all its glory!
Time for certificates and temporary membership cards for James and Alex
Later I received a report that Alex was seen skipping with delight as she crossed the hangar apron when she left the site.  The DGS Basic Instructors pride themselves in giving our visitors a great experience and leaving them on "Cloud Nine".
Our tame paramedic Dave Archer rigged his K-6 in the morning and took a pair of flights in the afternoon to keep current and build confidence in his glider which still sports the Swiss flag on the tail.  Swiss and German registered gliders have to have their national flags on their tails by law.  The German ones are relatively discrete.  Uncharacteristically, not so the Swiss which is why most British owners leave them in place as it is a challenge to remove them.

A question for our juniors.  Which glider apart from Dave Archer's K-6 sports a Swiss flag on its tail and what is its Trigraph (which is different from the glider's registration)?  First correct reply from a DGS junior can claim a chocolate bar of their choice from the tea swindle.  My treat.

Who set Debbie alight? Oh, it's alright, it's the second swaling on Blackdown.
The Nightowl on the prowl contemplating the intricacies of glider assembly and disassembly
All the toys packed away, but the burning continues.
The Port wing of G-CFXB awaiting the final cosmetic touches following a minor repair.  We should be able to rig this K-8 on Saturday.  Fingers crossed.
A final view of the sunlit moors at the end of the day
Today was a lovely and enjoyable spring day.  The Wednesday Wavers managed 26 flights; two trainees, two visitors, check flights for a visiting FI(S), and privateer flights.

Gavin Short

Dartmoor Gliding News - Saturday 22nd March 2025

Forecast for a dry day with 10+ knots winds from the east. There did not seem to be any wave in the forecast. 
No wave in the forecast. What's this then?
Today saw the return of CFI Rick Wiles from his extended holiday down under. After an initial solo flight, Rick was into a very full training list. Meanwhile, Scratch was flying today's One Day Course candidate, Wilbur Budd. 

New junior member Ed ready to fly
Junior member Aiden and family before he flew in the wave with me
Most flights were circuits or extended circuits in the somewhat buoyant air. Towards 3pm the cloud base started to lower until quite suddenly a wave bar set up over the winch. Luckily, I was launching with new junior member Aiden. At the top of the launch there was very strong rotor turbulence along with a noticeably lower cloud base. Releasing early we pushed towards the east, clearing the front of the cloud to be immediately in smooth wave lift at 4 knots. The cloud looked like a huge white cliff, and we climbed rapidly up the face. The wave bar was laying NW - SE not the more normal N-S. We explored north along the wave bar topping out at 2800ft QFE ( above the airfield ). Pushing back to the SE it was obvious that there was quite a bit of south in the wind; we were much slower over the ground on this beat.

Julia flying with Rick along the top of the wave bar
Aiden's view of the wave bar
Climbing nicely at 4 knots
Good view over the clouds
Mindful of the lowering cloud base, I radioed the other 2 aircraft who were up here with us with our plan to descend over Mary Tavy upwind of the cloud where we discovered that the cloud base was now around 1000ft. We flew an somewhat abbreviated circuit in strong rotor.

Approaching Marry Tavy ready for the descent.
(we are currently overhead the airfield over the wave bar.)
We paused any launching at this point because of the lowering cloud base. 15 minutes later the cloud suddenly detached from it's fixed wave position, drifting quickly away to the east and launching recommenced. The wave system was still there but was gradually lowering as it collapsed. This led to Adam Hoskin who was flying K13 FSD solo recording the longest flight of the day at 1hr 18min. He reported that the flight was conducted at the top of the wave system at just 1,400ft which reduced to 1,000ft by the end of the flight.

The cloud is clearing away overhead...
... revealing this lenticular to the north
As always, it was not all about the flying. John was busy working on Zack's Shack the new west end launch point bus. In the hangar, there was progress on the K8 C of A. Most interestingly, Julia Old presented a "technology demonstrator" for the new automation system for the manual winch. This looks very promising.
Julia's winch throttle system demonstrator
Fitting the control tower 
Continuing the tradition of inventive flying headwear.
Val models her new headwear inspired by her recent Turkish holiday
An excellent day

Steve



Dartmoor Gliding News - Denbigh Expedition - March 2025

Readers will recall that some of the Wednesday Wavers were missing from Brentor on Wednesday 19 March.  So in the style of of Law and Order; Special Victims unit: "This is their story", as told by Richard Roberts.

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Andy, Phil, and I had booked a week in North Wales at Denbigh.

The trouble with booking gliding and accommodation, a long way in advance and early in the year, is that the weather can be a bit of a gamble. 

Denbigh Gliding at Lleweni Parc is well known for its adventurous flying conditions, but so early in the season you just don’t know what you will get. 

As we got nearer our planned leaving date for Wales the weather was uninspiring.  So we didn’t leave on the Friday but delayed our departure until Sunday lunchtime.  Our gamble paid off as the weather got better each day while we were there. 

Day One - Monday 17 March 2025

We all rigged and flew.  Local soaring up to about 3,000 ft but climbs were unreliable and the cloud coverage was near total with the odd bit of sun trying to shine through.

The DGS team's gliders rigged but still in their "pyjamas"
Day Two - Tuesday 18 March 2025.  Wave was forecast and the feelings were all positive but in reality the day was a bit more difficult than predicted.  The experts launched early but were soon having to top up height with the big iron thermal (engine) they had onboard.

However, once they found which parts of the sky were working they managed a few rounds of the local task that they had set.  Andy made the most of the day of the Dartmoor Gliding Society pilots by climbing to 11,000ft.

Andy’s view of the west coast of Wales from overhead Lake Bala (a suitable reference point for a canoeist)

Chris Gill, the CFI at Denbigh Gliding, had bigger plans that involved travel through several other countries.  See Dartmoor Gliding Society Wednesday 19 March 2025 blog for details) Chris Gill's tour of the four countries of the United Kingdom

Day Three - Wednesday 19 March 2025.  A very localised forecast showed a weather window of just a few hours, however, it also showed a convergence line in the blue along the north side of the airfield.

We all flew and tried to make the most of it.  Andy and Phil both managed to explore the local area and then returned to the airfield after some good flying. 

Phil arriving back at Lleweni Parc

I decided to be very committed and push out to explore the area.  The end result was me picking fields in a very hilly area not far from the airfield.  The choice of landable fields was further reduced by the not insignificant population of sheep in many of the fields (well, it is Wales). 

 

Good choice of field for my outlanding - (uphill and into wind. It worked out OK)

On the upside, the airfield was only 15km away

Day Four - Thursday 20 March 2025.  The day forecast was flyable locally and this was proved by some of the Southdown Gliding Club contingent from West Sussex who were also on site. The conditions focused the mind and patience of James in their club DG-505, G-CKOW, getting low and stuck on a small ridge for 120 beats until a thermal allowed them to get the height required to return to the airfield!

Note, even the local place names are not helpful

Having had a better than expected spell of weather already, our sights were fixed on the wave that was forecast for tomorrow.  So today we all opted to stay on the ground and prepare ourselves and our gliders for tomorrow. 

Last day - Friday 21 March 2025

This was the wave forecast on Skysight.

Yellow and red mean strong areas of wave lift - blue means descending areas
A task was set similar to earlier in the week;  300 km running up and down several times from Corwen, past Lake Bala, and down to Barmouth station on the west coast.
 
We all took a long aerotow to the area and got established climbing generally to 7-8,000 ft

Above this height the visibility was intermittent.

7,000 ft and still climbing 
Fires on the moorland adding to the hazy visibility
Phil and I enjoyed the wave flying but Andy really went for it, achieving a flight of 256 km and a maximum height of 15,000 ft.

Andy's BGA ladder score.  Third highest for the day.

After landing we all made the long trip back to Devon. 

A great week, a great advert for early trips away to other clubs. We agreed that we all benefited from team work and all managed to gain knowledge from one another.

We now feel ready for the summer season.

Thanks to all who went, and all at Denbigh Gliding for the warm reception, great local knowledge, and weather forecasting/task setting.

Richard Roberts

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 Gavin Short