(recommended sonic ambience: http://www.youtube.com/watch?v=SINl5JY7LhI)
Saturday, 21st January 2012:
Well this is not about my first day gliding. However it is about my first day at a new (different) gliding club while still a beginner with discontinued, near-zilch experience.
Having just come back from my very amazing (to myself that is) second flight at the Nymphsfield airfield on a day of good thermals, quite a bit of wave, my increased feel of the aircraft and a very "exciting" landing - I feel it is worth telling you about my set of experiences on my first day at the club at this airfield last week-end.
On a clear yet cold morning (8.30 am) I was picked up by my colleague who agreed to take me along with him to his gliding club in his car. I knew very little of actual gliding and my colleague was my 'Senpai'.
After I had entered his car and we were done with the "Bonjour"s; my friend's first comment was about my clothing - which he felt was inadequate for the cold. Airfields are vast open spaces of land with wind freely blowing across. It was only more than reasonable a comment given that we are in the middle of winter, though a 'warm' one in comparison with the last two winters.
After one stop at a Tesco to purchase food (which in my case was croissants and an IRN BRU) we drove to the club with my friend talking me through the weather forecast for the day. He patiently explained to me that that the lift available to the glider may be marginal at the airfield because the wind wasnt blowing strong enough into the airfield and in a direction such that the natural orientation of the airfield tends to favour despite the day being of "good weather - sunny with clear blue sky" to those who didn't care.
So when we got out the car, we started walking towards the club office as my friend showed me the canteen from the outside and also said of the availability of a kitchen at the club for self-service. We then entered the main 'hall' of the club office adjoining which were a little kitchen and a briefing room. the 'hall' was mostly occupied by two rectangular tables lined in series continuity with chairs lined all around except 'width-side' which adjoined a wall. My friend then introduced me to people seated there - most of who were elderly and they all greeted me with a smile and their own names in exchange for mine......although, they allall seemed to use a wee bit of an effort grasping my India-made name. I thought they were all quite friendly.
After leaving my bag along with the others, I followed my friend towards a hangar which was seen to be open. Outside the hangar was a glider - resting on the nearly cut grass. It was about to be D.I.-d. D.I. is abbreviation for Daily Inspection or alternatively interpreted by some as Direct Inspection. The C.B.S.I.F.T., C.B.E. (Google it or ask me when we talk) was carried out and was explained to me by a kind member who was a part of it. Now the main controls in this glider were a 2-axis moving stick (much like a joystick) and a pair of pedals (not including air-brakes). I had the honour of being a part of it by helping by moving the control stick and pedals as I was asked to. This was done to ensure than there was no jam-interference with the motion of control surfaces. However an interference was found to be occurring between the elevator and the rudder of this aircraft and thus it did not pass the D.I. for the day as it would be unsafe to fly it as it was.
Now an aircraft flies based upon the pressure of air which is built under it. It is not to different from a boat floating the surface of a water. Air is of much lower density. Thus aircraft are different in conception. Imagine Fish Tank full of water. In order for a body to float on it, it must be lighter than the up-thrust pressure exerted by the water as result of its tendency to assert itself within the volume of the fish tank as a result of gravity. Now imagine yourself to be in this boat. The boat will Tend to tip to one side in you, being the only person in it moved over to that side. Similar is an aircraft. It is different however as it is more of a "sub-marine" than a boat - as it does not float on the surface but within the 'water'.......i.e. air - also a fluid but a less dense one.
While on a boat, assuming you were at the centre - should you move to a side, the boat will Tend to tip because of your having changed the distribution of forces on the boat to be such...........i.e. the forces are no longer symmetrically distributed. The working of aircraft controls is based upon the same principle. the redistribution of forces is however carried out by moving of "control surfaces" which will vary the area impacted by the forces. In an aircraft, basic controls are Ailerons - controlling the side-to-side or 'roll' motion of the aircraft; Elevators - controlling the nose up-nose down motion i.e. 'pitch attitude' of the aircraft with respect to the horizon and a Rudder - to control the directional turning or 'yaw' of an aircraft. So again, the Ailerons with respect to gliders are almost always present on the wings, Elevators - on the tail-wing/Horizontal tail-plane and the Rudder - on the Fin/vertical tail plane as in the case of boats (if this para was a misadventure with respect to getting through to you, google it or ask me when we speak - but this is how conventional fixed wing aircraft of popular current production "fly" on a basic level).
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| Aileron roll - observe the wings (courtesy WikiPedia) |
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| Elevator pitch - observe the Tail wing (courtesy WikiPedia) |
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| Rudder yaw - observe the Tail Fin (courtesy WikiPedia) |
So we went back to the hangar which had its shutters open and 'pulled out' another glider and D.I.-d it.
It passed the D.I. But the exciting bit for me was that I actively helped with 'pulling it out'.
Pulling out a glider is usually done by atleast two people actively in contact with the aircraft. One being at the nose and the other at a wing tip. One at the nose is responsible for Pulling the aircraft forward while the one at the wing tip will steer it directionally by using the usually long wing as a moment arm. It is usually recommended that the steering be done only from one wing while the other wing is left free. Interestingly, this wing also had snap-fit winglets.........distinctly resembling the 737NG blended winglets or their A320 equivalent which are by no means a nearly easy job fitting I can tell you.
One thing while I did the DI......My fingertips were cold. The gloves I had on were epic fail.
It was a day of clear sky.........and frost. The remperature was negative 2 and there was windchill which eroded away temperature from the body at God-knows what rate. But the next step was me witnessing the aircraft being towed away to the launch point. The launch point was situated such that it is as much ito the wind as possible while being in line with the length of the airfield. The towing of the aircraft was done by affixing a hook to the fore of the aircraft, underneath the nose to a vehicle (Land Rover in this case) with a driver trained for the job. A man stands by at the wingtip to steer the aircraft. While I walked this distance, I was briefed again about Daily Inspection and the procedure to tow a glider. While I walked, I realised that Ice had formed on the fore surface of my 'work disguise' Nikes.....which was inadequate to wear on an airfield at this time of the year according my friend and I was only just starting to see his point in this regard, following the failure of my gloves which I was attempting to damage-control by blanketing my gloved hands with the pockets of my jacket.
We then reached the launch point where I noticed a but which appeared to be converted to an office or 'shelter' place parked at a side. I was then introduced to my instructor who was communicating over a radio which was located in the bus. I then gathered that he was communicating with the winch operator.
Now most gliders lack a launchable engine. They rely on an external means of initial power i.e. in order to be 'thrown into the air. Once airbourne, they 'fly' by Gliding into Lift-Favouring regions of air. Two most common ways of launching glider aircraft are by using a Winch or by Aero-tow. While a Winch-launch by is a "cable"/rope attached to the fore of a glider being pulled by a firm and secure motor of heavy-duty engineering; Aero-tow launch is by towing of a glider into air, to a desired altitude by an aircraft linked to it by an attached cable. And I witnessed my first winch launch - which was the launch of a two-seat glider. While I watched and attempted filming with my super-wimped-out fail of a phone camera, my instructor turned to me and started making conversation. He asked me if I was familiar with flight and how it worked, what I did for a living etc. And he explained to me why the lift wasnt going to be reasonable on the day despite being the bright and sunny looking cold day that it was. I didnt quite follow his explanation as I am very unfamiliar with meteorology and havent found the flow as of yet to synchronize with my book on meteorology for a pilot which I had purchased out of interest a few months ago. He then said to me that since I was here for a first time and on "trial membership", I would be launched by Aero-tow and he would be my instructor for the day. I then noticed a glider land quite smoothly outside the bus almost from the same spot it launched from. It was the same glider which had just taken off and it had only been five minutes since the take off. And that is what a "no lift" day of still air did. However had it only had a reasonable engine, the engine would have caused enough turbulence in the surrounding air to create a reasonable lifting pressure under the wings. It is Analogous to attempting sailing on a day of still air in a still water.
My friend then came to me and asked if I wanted to go along with him. I followed him not knowing where we were headed. He motioned me to a golf cart with the member who was explaining to me the towing of a glider while I was walking along, behind the wheel. So my friend stood at the back of it while I was asked to sit beside the driver. We then drove to another end of the airfield with more hangars. The hangar area of interest was opened by removing large door-plates which were bolted. The gliders lay in rest inside. It struck me to get a snippet with my not-so-nice phone camera at this point (below).
The glider was then attached to a hook on the back of this (quite powerfully engined) cart by means of a link-rod. Both wings of the glider were held hoisted in place by a 'bangle-slide-in' dolly with rugged wheels to enable the towing of a glider without a man at a wing. This ofcourse mandated that the driver be extra careful. So we rode back as we chatted about the relevant and the irrelevant. Boy have I never ridden the back of a golf-cart standing and in an open field before. It was awesome. Wind blowing to the face. The legs were warm from the engine while the face was feeling erosion of temperature. I tried clicking pictures, most of which were horrible and nearly dropped my phone once while trying. The reflex was an OOPS, which made the driver stop and he asked if everything was okay.....but my half-embarassed encouraging (to him) words of apology were sufficient for him to continue with a "Dude, we're cool man. Relax!".
Close to the launch point, my friend and myself disembarked and helped position the glider to be lauched.
The D.I. was then carried out and it was found to be fit. I then witnessed an aero-tow launch with the tug aircraft being a powerfully engined aircraft designed for crop-dusting. I then got into the bus and requested the man at the radio to be allowed to sit at the back of the bus as my feet were freezing, for which I received an encouraging response. I was grateful.
Back of a golf cart (the glider is a Grob)
Piper Pawnee - the Tug aircraft
I alternated between the inside and the outside of the van at intervals at each moment that I felt the missing-in- action complex. Inside the van, I had spent my time by removing my socks and placing my feet on the seat for comfort and re-circulation of blood.
While my friend's single seat glider was getting ready for action, I followed the driver of the golf cart upon his encouragement into the land rover in order to pick up parachutes and batteries for the glider's radio units - back into the club office area. When we returned, I knew of the number of parachutes and how they were checked for usability. When I got back, I returned to the bus and my instructor said to me that he would fly me next. I spent the minutes between, trying to video the launch of my friend despite poor quality.
Most of it was from within the bus as my toes were still uncomfortably cold. Incase you're still curious about a winch launch - the following is what it approximately looks like. However the camera view of this video (courtesy: youtube) is epic. It seems like some body found a way to affix a camera to the wing of a K-21 glider. And it is interesting that it is a K-21 as I received instruction on a K-21 on the day.
http://www.youtube.com/watch?v=v2Qh95I_YM0
So finally my Instructor came back to me and said we were ready to fly. He then asked again of the whereabouts that I came from at India and said that he had spent about a year of his life as a hippie at India and had probably seen more of India than I had. I only had to agree as there is much of India that I havent actually seen. He also knew quite a few words and sentences in Hindi it turned out. So he tried telling me that while the aero-tow would tow me up to 2000 feet, we would most likely glide down from there and the lesson would comprise what could be accomodated within that - being a day of still air - and the time would be limited by it. However if I wanted more time, I'd have to be towed up to higher altitude and would require me to give the pilot "bakshish" of 10 quid (which was ofcourse intended as joke) but either ways I wasnt upto paying that much more. So he buckled me in with instruction of how to handle myself within the glider and what should be done in the eventuality that the aircraft may have to be ditched mid-air (a scary thought!). I would be allowed to control the aircraft after the altitude has been attained, the tug has been released, the aircraft satisfactorily stabilised and preliminary control instruction given. I was not allowed to use my camera whilst in flight as it posed a danger of falling into the aircraft and jamming controls.
The following video (courtesy Youtube) is Aero-tow launch using a Piper Pawnee aircraft:
http://www.youtube.com/watch?v=4FWlg3r90k4
So as the tug started to exert forward force on the aircraft, I felt locked in a box which was being dragged forward by a child pulling a connected leash for the first 3 seconds, but it soon stabilised so that the aircraft was moving in forward in a straight line. I could still feel the effect of little bump loads transferred from the landing gear wheels. Before I knew it, i was starting to face upwards with increasing angle while my guts were moving downwards...........and I was airbourne! As I rose, I could see the airfield below me - and a couple of birds too. I could see the beauty of this side of England. And is she beautiful! -blah blah- (and what everybody else will tell you will follow so I wont bore you with that)
So the instructor said I must keep lookout for other aircraft in sight for safety reasons and report to him the angle in clock-terms and in high, low or in-level. For example, if I saw a glider at about 45 degrees to my right and above me, I'd say "Glider high at 3 o'clock" or along the lines.
The reason for alertness is in order to be able to actively avoid collision related accidents.
He then demonstrated to me the application of roll and yaw controls and asked me to follow them through with him. Now usually in 2 seat instruction gliders, the instructor sits at the back while the student is at the front and the controls are all connected in duplication. This means that if the instructor moved a control stick, it is linked such that the student's stick would move too. The control stick, which looks not too different from a joystick worls for Pitch when moved forward and backward and roll when moved side-to-side. The rudders are controlled by alternating push-pedals.
After he had demonstrated each control, he said that I must control the aircraft by myself for a while in order to get some feel. The controls hand-over is customariy done by the instructor saying, "You have control" to which the student is expected to respond with a nice and friendly "I have control" before the take over. If at any point the student isnt confident, the student will hand-over saying, "You have control"...whereas when the instructor would like to take back control, he would initiate by saying, "I have control".
And I was only happy to control. The important thing with pitch was to be able to hold the aircraft at a certain attitude, which is only determined my looking straight out at the horizon. A repeated wisdom from instructors is "Everything you need is in front of you." I was happy for he said that I was doing well during the lesson. He however said that when the aircraft was being rolled simultaneously in attempt to turn it, my pitch-pull got heavy handed. I was still happy, I was feeling it and I had learnt something for real on the day.
But it had to end as we were only bound to......gravity! :-( We were down in 13 minutes with smooth landing. While landing, airbrakes are deployed in order to both slow down and level the aircraft. It was quite smooth and the only thing I felt was the impact of first touchdown. I found out that it had lasted only 13 minutes and I was naturally only craving for more........but I left it for another day (today?).
a little down about coming down
And I spent the rest of the afternoon discovering the very interesting collection of books at the office, sipping a hot cup of tea and eating what little was left of my food whilst waiting for my friend. I then helped out tuck the gliders away as and when a hand was needed. I then drove back as the sun staring to set, reminiscing this very awesome Saturday, with a big thanks to my friend and resolve to learn to fly solo- very well that too!Someday.......in reality.....yet as good as my (fictitious) heroes Luke Skywalker and the Swat Kats.








