LET L-13 AC BLANIK Flight Manual Download

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Summary of Contents for L-13 AC BLANIK

Page 1: ... 2 3 4 and 5 have been approved by The Civil Aviation Authority of the Czech Republic in Prague S t 7 1gna ure Authority CAAJ rague Oc1 11 Stamp fli Original date of approval 15 7 1999 THIS FLIGHT MANUAL MUST BE CARRIED ABOARD THE SAILPLANE AT ALL TIMES WHEN IN OPERATION This Sailplane Flight Manual constitutes an FAA Approval Flight Manual for US Registreted asilplanes in accordance with FAR 21 2...

Page 2: ...ss to keep the service and flight documents current Manufacturer s address LET a s 686 04 KUNOVICE Czech Republic Telephone 420 632 51 1111 Fax 420 632 56 4102 Revised or amended parts of the text will b marked by vertical line in page margin and the number of the revision and date of its issue will be shown at the bottom of the page Rev No Section Affected Pages Date of Number of Date of Carried ...

Page 3: ...LIGHT MANUAL Do L13AC 1013 3 Rev No Section Affected Pages Date of Number of Date of Carried Out On Issuing Bulletin Bulletin Signature Revised Covering Approval Pages Revision I I I I I I I I I I I I f I I I I i I Nov 30 98 0 2 ...

Page 4: ... 5 Nov30 98 6 1 Nov30 98 6 Nov 30 98 2 Nov 30 98 7 Nov30 98 3 Nov30 98 9 Nov 30 98 4 Nov 30 98 9 Nov 30 98 5 Nov30 98 10 Nov 30 98 6 Nov30 98 7 Nov30 98 3 1 Nov 30 98 8 Nov30 98 2 Nov30 98 3 Nov 30 98 7 1 Nov 30 98 4 Nov30 98 2 Nov 30 98 3 Nov 30 98 4 Nov 30 98 4 1 Nov 30 98 5 Nov 30 98 2 Nov30 98 6 Nov 30 98 3 Nov30 98 7 Nov30 98 4 Nov30 98 8 Nov 30 98 5 Nov30 98 9 Nov 30 98 6 Nov 30 98 7 Nov30 9...

Page 5: ...C 1013 3 0 3 TABLE OF CONTENTS Section General 1 Limitations 2 Emergency Procedures 3 Normal Procedures 4 Performance 5 Weights and Balance 6 Sailplane and Systems Description 7 Sailplane Handling Care and Maintenance 8 Supplements 9 Nov 30 98 0 4 ...

Page 6: ... L 13 AC BLANIK SAILPLANE FLIGHT MANUAL Do L13AC 1013 3 Section 1 General Contents 1 1 Introduction 1 2 Regulation Basis 1 3 Warnings Cautions Definitions and Abbreviations 1 4 Basic Data 1 5 Three View Drawing 1 1 ...

Page 7: ...ARNING MEANS THAT NON OBSERVATION OF THE CORRESPONDING PROCEDURE LEADS TO AN IMMEDIATE OR IMPORTANT DEGRADATION OF FLIGT SAFETY CAUTION Mea ns th at no n o b serv ati on o f the c o rre s pond ing procedure leads to a minor or more or less long term degradation of flight safety NOTE Draws attention to any special item not directly related to safety but which is important or unusual km h IAS indica...

Page 8: ...by six bolts to the fuselage A vertical fin with rudder is attached to the rear fuselage The horizontal tail is also attached to the end of fuselage The elevator and ailerons are manual controls by control cables and push pull rods The rudder control is also manually operated by the feet using control cables and rods The air brakes are controlled by levers The elevator tri m tab is also lever cont...

Page 9: ...hord Geometric twist Ailerons Area Span Deflections up down Air brakes Area Span 3 Horizontal tail Area total Span Aspect ratio Dihedral angle Nov 30 99 Do L13AC 1013 3 46 59 ft 14 2 m 27 56 ft 8 4 m 6 86 ft 2 09 m 187 72 sq ft 17 44 m2 11 186 4 26 ft 1 298 m 30 19 1 6 sq ft 1 78 m2 9 13 ft 2 783 m 34 2 6 97 sq ft 0 648 m 2 4 61 it 1 404 m 2 28 63 sq ft 2 66 m 11 32 ft 3 45 m 4 3 50 1 4 ...

Page 10: ...rea 1 25 sq ft 0 116 m2 Trim tab deflection up 12 1 down 4 Vertical tail Area total 16 15 sq ft 1 5 m 2 Height 5 25 ft 1 6 m Aspect ratio 1 7 Rudder Area 8 50 sq ft 0 79 m2 Deflection both sides perpendicular to axis of rotation 29 1 5 Fuselage Fuselage width 2 165 ft 0 66 m Fuselage height 3 61 ft 1 10 m cont Nov 30 99 1 5 ...

Page 11: ...L 13 AC BLANIK SAILPLANE FLIGHT MANUAL Do L13AC 1013 3 1 4 Three View Drawing 27 56 ft 8400 mm Fig 1 1 Nov 30 99 1 6 ...

Page 12: ...peeds 2 3 Not used 2 4 Not used 2 5 Power plant Instrument Marking 2 6 Weight 2 7 Centre of Gravity 2 8 Approved Manoueuvres 2 9 Manoeuvring Load Factors 2 10 Flight Crew 2 11 Kinds of Operation 2 12 Minimum Equipment 2 13 Aerotow and Winch Launching 2 14 Other Limitations 2 15 Limitation Placards Nov 30 98 2 1 ...

Page 13: ...t not be 230 more than 1 3 VRA Rough air speed 86 This speed must not be exceeded in severe turbulence 160 VA Manoeuvring speed 86 No full or abrupt contro l deflections may be made above this speed 160 because the sailplane structure might be overstressed Vw Maximum 65 This speed must not be exceeded winch launching speed during w i nch towi ng or motor 120 vehicle towing VT Maxi mum aerotowing 7...

Page 14: ... 8 000 9 000 V NE km h IAS I230 223 209 195 182 170 158 147 2 3 AIRSPEED INDICATOR MARKINGS Marking I KIAS km h IAS Significance Green arc 40 86 Normal Operating Ran e lower limit 72 160 is maximum weight 1 Vs 1 at most fo rward e g position upper limit is rough air speed Yellow arc 86 124 Speed range in smoot h air 160 230 Red line I 124 Maximum permi ssible speed for all 230 operations Yellow tr...

Page 15: ...ght solo Maximum useful load Weight of non lifting parts i e 65 5 1 MAC xr 27 323 0 51 in 694 13 mm i e 65 5 1 MAC 154 lb 70 kg 250 lb 113 kg 430 lb 195 kg maximum weight of non lifting parts 783 lb 355 kg WARNING IT IS NECESSARY TO USE SEAT WITH BALLAST OF 33 LB 15 KG IN THE FRONT COCKPIT WHEN FLOWtl BY A PILOT WEIGHING FROM MIN 121 LB 55 KG TO 154 LB 70 KG NOTE Installation of the front seat bal...

Page 16: ...ion 4 3 6 item 3 Half roll and half loop yes yes Section 4 3 6 item 4 Lazy eight yes yes Section 4 3 6 item 5 Inverted flight yes yes Section 4 3 6 item 6 Slow roll yes yes Section 4 3 6 item Spin yes yes Section 4 3 6 item a Chandelle climbing yes I yes Section 4 3 6 item 9 Steep turn yes yes Section 4 3 6 item 10 Flick roll yes yes Section 4 3 6 item 11 Flick half roll and half loop yes yes Sect...

Page 17: ...lot s weight is loss than 154 lb 70 kg it is necessary to use the cushion with 33 IL 15 kg ballast in front cockpit The rear seat must be secured aft using th e safety belt and shoulder harn esses 2 11 KINDS OF OPERATION The sailplane is certified in aerobatic category to allow approved aerobatic manoeuvres see para 2 6 Onty day VFR flights and cloud flights are permitted Intentional flights in ic...

Page 18: ...ipment must be approved A Flights according to VFR conditions 2 Airspeed indicators with colour markings according to item 2 3 2 Altimeters 2 Turn and bank indicators 2 Magnetic compasses 2 Accelerometer 2 Five point safety harnesses 2 Manual parachutes B Cloud flying Added to minimum equipment as per para A 1 VHF transceiver Nov 30 98 2 7 ...

Page 19: ...mum cable strength for winch launching of the sailplane is 1 400 lb 6 230 N 2 14 OTHER LIMITATIONS Maximum demonstrated crosswind component maximum demonstrated crossw ind c ompo nent for safe approach landing and aerotow launching is 16 kt Determinat ion of maximum wind speed at winch launching o 1 24 22 20 RELATIVE ANGLE TO WIND OIRECTIO 1 8 15 14 12 kt 1 0 kt 8 let 5 let let ao 2 let Wind angle...

Page 20: ... 4 and 7 5 Values given on the placards must comply with the installed instrument e g airspeed indicator a front cockpit without ballast o I b both front and rear cockpits R c Air brakes Air brakes extended retracted Landing gear Landing gear retracted extended b Trim Seat back Air vent t Pedal adjustment c1 Canopy lift off Wheel brake Canopy jettison Baggage rear seat only Release Nov 30 98 No ba...

Page 21: ...TITUDE ALTITUDE Fl UP TD 8 200 10 000 13 000 16 SOO 20 000 23 000 26 000 VNE KIAS 124 120 113 105 98 92 85 or MAX ALOWABLE SPEED VS AlTITUDE PRESSURE AlTITUDE m UP TO 2 500 3 000 4 000 5 000 6 000 7 000 8 000 VNE km h IAS 230 223 209 195 182 170 158 30 000 79 9 000 147 MAX WINCH LAUNCHING SPEED 6S KIAS VNE 124 KIAS AERO TOWING SPEED 76KIAS VAA 86KIAS MANOEUVRING SPEED 86 KIAS or or VNE 230 km h MA...

Page 22: ...3 AC BLANIK AA Ayres Compony SAILPLANE FLIGHT MANUAL Do L13AC 1013 3 SECTION 3 Emergency Procedures Contents 3 1 Introduction 3 2 Canopy Jettison 3 3 Bailing out 3 4 Stalls 3 5 Spin 3 6 Spiral Nov30 98 3 1 ...

Page 23: ...he lever Note Turning the lever front or rear 180 upwards and forward pulls the hinge pins on the right and left side of the cockpit The canopy strap is also released 2 lf the canopy does not jettison hold the emergency jettison lever in its end position and at the same time push the canopy upward using the other hand 3 2 BAILING OUT Release the safety harnesses and stow them Grasp cockpit rails p...

Page 24: ...L 13 AC BLANIK SAILPLANE FLIGHT MANUAL Do L13AC 1013 3 CANOPY JETTISON DURING FLIGHT 1 Fig 3 1 Nov 30 98 ...

Page 25: ...left rudder and vice versa If we apply the control surfaces in time and energetically the sailplane will stop slightly below the horizon which is enough to adjust speed to let it continue its controlled gliding If it is not corrected the sailplane may enter a spin 3 5 SPIN A spin usually results from a disproportional application of rudder at stall Standard procedure to recover from a spin is 1 Pr...

Page 26: ...evers pivoted in consoles on outside ribs from the fuselage side Remove lock pins from the front hinge pins and wing main pins and knock out the front pin Gently move the wing up and down when installing or removing the pins Pull the wing from the fuselage by a slow and carefu movement and place it perpendicularly with the leading edge pointing downwards on a special handling equipment 4 2 2 Wing ...

Page 27: ...4 2 Field Sailplane Assembly And Disassembly 4 3 Daily Inspection 4 4 Pre flight Inspection 4 5 Normal Operations and Recommended Speeds 4 5 1 Not used 4 5 2 Take Off and Climb 4 5 3 Flight 4 5 4 Approach 4 5 5 Landing 4 5 6 Flight with Water Ballast 4 5 7 High Altitude Flight 4 5 8 Flight in Rain 4 5 9 Aerobatics Nov 30 98 4 1 ...

Page 28: ...IAyes Comoonv Nov 30 98 L 13 AC BLANiK SAILPLANE FLIGHT MANUAL Do L13AC 1013 3 c A Centering the front hinge B Control joint between the wing and the fuselage C Wing main hinges with the main pin Fig 4 1 4 3 ...

Page 29: ...y means of the pin which can be removed from the hole in bulkhead No 15 see Fig 4 2 det 8 The pin shall be secured with a safety pin Extended parts of the tailplane spars shall be inserted into the clevises on both ends of the strut and secured with pins The latter shall be locked with safety pins To avoid damage to the elevator during sailplane transit both rudder and elevator shall be secured by...

Page 30: ...ed fuse lage tail portion 2 Left half of elevator 3 Right half elevator 4 Elevator control countershaft S Securing pin 6 Securing strut 7 and 8 Strut securing pin 9 Securing strap WARNING Nov 30 98 ENSURE THE CORRECT POSITION OF THE ELEVATOR CONTROL COUNTERSHAFT AFTER TILTING THE ELEVATOR INTO THE NORMAL FLIGHT POSITION RED MARKED PART OF THE DRIVING MUST BE ON ITS LEFT SIDE IN THE BACK VIEW IN FL...

Page 31: ...el unit check operation of the brakes and the shock absorber inspect the attachments of the instrument panels and inspect the instruments tor damage inspect ventilation system inspect attachment of the first aid kit inspect battery bay check the voltage of airborne battery and charge t he battery if necessary inspect the moisture trap For more details see Maintenance Manual item 2 2 2 Operational ...

Page 32: ...L 13 AC BLANIK SAILPLANE FLIGHT MANUAL Do L13AC 1013 3 Sequence of the Walkaround Inspection of the Sailplane Fig 4 3 Nov 30 98 4 7 ...

Page 33: ...no dirt no clogging Cockpit canopy surface no damage no dirt Pitot tube no damage no clogging 2 Cockeit interior Instruments no damage Altimeters correct QNH QFE setting Transceiver if installed proper operation Nose ventilation no clogging proper function Safety harnesses no damage Control system trimmimg proper function air brakes 3 Landing gear wheels Tire no damage correct inflation main landi...

Page 34: ...g skin including leading no damage no deformations edge loosened rivets Aileron surface no damage to fabric cover no damage to trailing edge Aileron easy movement Airbrake locking in hinges no damage t o locking in hinges and control t ie rods 5 Rear fuselage section Fuselage surface no damage no deformations loosened rivets Inspection cover proper attachment of control elements connections securi...

Page 35: ...o damage vertical speed indicator Eievators easy movement Locking of rear pin non damaged condition of horizontal tail of locking wire securing th e rear pin of the horizontal tail unit Rudder easy movement 7 Tail landin9 9ear Landing gear attachment no damage of attachment 8 Right wing see item 4 left wing 9 Front fuselage section Pins for canopy opening p roper position in relation to hinges Nov...

Page 36: ...hould be done on the ground only Three pedal positions are possible The pedals are secured with locking pins Control column Check the control column for free movement left and right and fore and aft Instruments Set t he altimeters to ONH value to read field altitude The altimeters set to zero will indicate pressure at aerodrome level QFE Check all instruments and note that the vertical speed indic...

Page 37: ... of about 3 ft 1 m hold a level attitude until the tow plane starts to climb During cross wind take offs unstick the sailplane at a higher speed The tow rope is to be attached to the front hook only NOTE Before take off at an airport where dirt may get into the cockpit close the ventilators The ventilators can be opened during the climb For take offs close to o0 c and high humidity fu lly open all...

Page 38: ...ne for the climb speed The recommended tow speed is 59 70 KIAS 11 0 130 km h IAS Aerotowing procedures are not different than normal techniques b Level flight Can be performed up to speed Vr 76 KIAS 140 km h IAS c Descending Nov 30 98 When descending on aerotow observe the approved limitations of this sailplane As necessary apply air brakes or side slip to increase the vertical descent rate 4 13 ...

Page 39: ...onventional Moving the control stick to the left we are performing left side slip to maintain straight descent apply almost full right rudder The angle of bank of the sailplane will be between 1o0 20 The side slip as a means of increased rate of descent is effective only with simultaneous application of air brakes The steady speed can be maintained by maintaining constant pitch angle When performi...

Page 40: ...d and secured ventilation shut Uncommended banking at stall must be corrected by releasing aft stick pressure and even pushing of the control stick forward with simultaneous application of opposite rudder 4 Use of air brakes The air brakes are to be used to avoid exceeding the VNE speed i e a at stall into an abnormal position e g during aerobatics b when disoriented during cloud flying It is reco...

Page 41: ...de for landing should allow the main gear wheel to touchdown before the tail wheel contacts the ground to reduce shock to the tail wheel from uneven ground Do not flare prematurely in order to prevent the sailplane from dropping from a higher height on the tail wheel Off field landing The pilot must make a decision on the landing gear posi tion It is recommended to land with the landing gear retra...

Page 42: ...in rain has little effect on the pilot s view Excessive moisture from pitot static system can be drained from the moisture trap There are no rain induced airspeed errors 4 5 9 AEROBATICS The sailplane is 1ble to perform the approved aerobatic manoeuvres provided limitations contained in Section 2 2 2 6 and 2 7 are observed Instructions for performing the listed aerobatic manoeuvres are given on th...

Page 43: ...ng the position nose up the control force drops slightly due to speed decrease However maintain the backward stick movement but do not use more than about 60 of the control stick full deflection in the inverted position Also the load factor must drop in the upper part of the loop arc After passing the inverted position the speed will increase and the control stick must be eased slightly so the fli...

Page 44: ...dder slowly in the required direction of turn As the force on the rudder decreases gradually apply full rudder Full deflection of the rudder should be reached when the sailplane heads about 45 in the direction of turn At this moment also start to use ailerons against the direction of stall turn which supports quicker turning and at the same time prevents sailplane roll ing to the inverted position...

Page 45: ...speed needed for the manoeuvre As the inverted position is reached move the pulled control stick gently forward to achieve almost gravity free state of the sailplane Then apply full aileron so as to roll the sailplane into the normal position When the sailplane is banked by 90 it is necessary to apply fu ll rudder deflection upwards to maintain the sailplane nose in the horizon and to avoid sailpl...

Page 46: ...e by applying top rudder usually deflection 25 to 30 is enough As bank increases beyond 90 when the sailplane goes inverted the rudder should be centralized and the control stick moved forward in the way required so as to keep the original fuselage attitude After reaching the inverted position bring the ailerons into their original position ease the control stick aft and begin slight pulling it ba...

Page 47: ... pulling the control stick with simulta neous coordinated use of ailerons and rudder At a speed of 54 KIAS 100 km h IAS do transition of the sailplane to a descent and after reaching 97 KIAS 180 km h IAS perform the steep turn to the opposite side smoothly pulling the control stick with simultaneous coordinated use of ailerons and rudder The flight path intersects at the lowest point of the manoeu...

Page 48: ... below 54 KIAS 1 oo km h IAS and then pull it back as during the half roll and half loop When recovering by means of a half roll the speed should be slightly increased first to about 76 to 81 KIAS 140 km h 150 km h IAS and then the nose raised to about 25 above the horizon and kept there Then full aileron deflection should be applied When banked vertically at 90 it is necessary to apply full top r...

Page 49: ...As the vertical bank position approaches and if the nose drops down apply slightly top rudder deflection If the beginning of the slow roll is performed correctly it is not generally more than 25 of its full range When banked vertically and when the sailplane is inverted the control stick should be pushed forward to maintain the pitch Keep the full aileron deflection Quite a big top rudder deflecti...

Page 50: ...to neutral position Initiate recovery from the spin by applying full opposite deflection of the rudder and easing the control stick forward When the sailplane stops rotation neutralize the rudder Recover the sailplane from the dive in the usual way The attitude during the spin is 60 70 nose down and the loss of height in one turn is approximately 260 ft 80 m when flying solo and 400 ft 120 m in on...

Page 51: ...L 13 AC BLANIK SAILPLANE FLIGHT MANUAL Do L13AC 1013 3 min 35 KIAS 65 km h IAS 43 54 KIAS 80 100 km h IAS 76 86 KIAS 140 160 km h IAS Fig 4 12 Nov 30 98 4 26 ...

Page 52: ... angle of approximately 45 above the horizon by pulling back the stick smoothly and continuously do not increase the angle At a speed of 76 KIAS 140 km IAS apply the rudder to the selected side of the turn and by coordinated positive use of the ailerons make a transition to gliding flight in the opposite direction at a minimum speed of 43 KIAS 80 km h IAS 43 KIAS 80 km h IAS 76 KIAS 140 km h IAS 9...

Page 53: ...o or 97 KIAS 180 km h IAS when flying dual Enter the climb simultaneously with a bank of approximately 45 After turning by about 150 start transition to gliding flig ht so that the manoeuvre will be finished in the opposite direction with the speed not decreasing below 43 KIAS 80 km h IAS 43 KIAS 80 km h IAS 92 97 KIAS 170 180 km h IAS Fig 4 14 Nov 30 98 4 28 ...

Page 54: ...ailplane nose is approximately 15 below the horizon Pull vigorously the control stick about 1 s and immediately afterwards apply full rudder As soon as the sailplane starts rolling apply immediately the aileron deflection in the direction of rotation The flick roll is finished by neutralizing controls 65 70 KIAS 120 130 km h IAS Fig 4 15 Nov 30 98 4 29 ...

Page 55: ...he sailplane starts to rotate at increasing descent Approximately at an angle of 45 before reaching the inverted flight centralise the rudder with maintaining the control stick fully back Ease the stick gently forward before reaching the level flight The speed should not exceed 65 KIAS 120 km h IAS The whole manoeuvre is performed within design manoeuvring speed therefore full deflections may be u...

Page 56: ... 1013 3 Section 5 Performance Contents 5 1 Introduction 5 2 Approved Data 5 2 1 Airspeed Indicator System Calibratio n 5 2 2 Stall Speeds 5 3 Non approved Further Information 5 3 1 Demonstrated Crosswind Performance 5 3 2 Flight Polars Nov 30 98 5 1 ...

Page 57: ...2 1 Airspeed indicator system calibration The diagram is effective fo r maximum flight weight of 1100 lb 500 kg 0 160 f 150 OE 7140 u Ql Q 0 O Q iii D iO 130 120 110 100 90 80 70 60 50 40 30 280 240 200 160 120 80 20 40 10 0 Nov 30 98 actual speed calculated speed I I I V I V vv v v vv vv v I I II V v ii v 0 40 80 120 160 200 240 280 0 10 20 30 40 50 60 70 80 90 100 110 120 130 140 150 160 Flight ...

Page 58: ...ive for maximum fl ight weight of 1102 lb 500 kg 0 160 r tJ I 150 OE 280 14 0 u 130 240 a 120 110 200 u 100 co 90 D 160 co 80 70 120 60 50 40 80 30 20 40 10 0 Nov 30 98 actual speed calculated speed I v I I I I V I fC v I vv I VI 1 V I I f 7 I I I V I I I I I f I I I v I I I I I V I I I I I ti I I 1 I I I I l I I I I I I I I I I I I I 1 1 1 I I I I I I 1 I I I I I I I 0 80 120 160 200 240 280 0 10...

Page 59: ...2 The figure is valid for wing span 46 59 ft 14 2 m CAUTION 70 c E O 35 Q Q _ 0 60 2 30 50 25 40 The stall warning speed Is for all configurations in Fig 5 2 2 3 KIAS 4 6 km h IAS higher than stall speed f V _ Air brakes extended Yr n Air brakes retracted I 380 400 420 440 460 480 500 Weight kg 00 1000 1100 Weight lb Fig 5 2 Nov 30 98 5 3 ...

Page 60: ...e Maximum demonstrated crosswind component is shown in the Sect 2 item 2 14 5 3 2 Flight speed polar Maximum flight weight of 1100 lb 500 kg Airspeed KIAS km h IAS 0 10 20 30 40 50 60 70 80 90 100 0 0 20 40 60 80 100 120 140 160 180 200 l I I I I air brakes retracted 1 landing gear retracted r 300 Q a co 2 r 600 3 4 900 5 6 1 200 7 Fig 5 3 Nov30 98 f I I 5 4 ...

Page 61: ...ted crosswind component is shown in the Sect 2 item 2 14 Flight speed polar 1 Maximum fl ight weight of 110 2 lb 500 kg 0 0 0 10 20 20 40 30 60 c I I 4S 50 60 70 80 100 120 80 140 Airspeed KIAS km h IAS 90 100 I 160 180 200 I I I I I air brakes retracted I landing gear retracted v E 1 O Q Cl a I I Q 300 2 600 3 4 900 5 1 200 7 I Fig 5 3 Nov 30 98 t re I I I 5 4 ...

Page 62: ...y SAILPLANE FLIGHT MANUAL Do L13AC 1013 3 Section 6 Sailplane Weights and Balance CONTENTS 6 1 Introduction 6 2 Weigh ing Record 6 3 Basic Empty Weight and Moment 6 4 Balance Chart 6 5 Equipment List 6 6 Balance Record Nov 30 98 6 1 ...

Page 63: ...cale corresponds to the value given in the column on the left and is marked with an arrow indicating direction of progress in chart The chart of the centre of gravity vs sailplane weight is given in the bottom part The region of non allowable centre of gravity range is horizontally hatched and relates to all flight conditions 2 Directions for the balance chart use See FIG 6 1 on Page 6 4 Line 0 Ma...

Page 64: ...trument panel in the same fashion as in the previous paragraph That is how you arrive at point E Draw a vertical on down to the lower part of the chart Now use the weight scale on the lower left part of the balance chart Mark the sum of all weights Empty sailplane front pilot parachute ballast seat rear pilot parachute instrument changes baggage Draw a horizontal line from the mark to th e right T...

Page 65: ...b 65 S EMPTY SAILPLANE CENTER OF GRAVITY RANGE 62 70 Line 0 Froot Pilol par ll hute seat balast 300 250 200 150 100 50 Line 1 Rear Piiot p uachute 300 200 100 A line 2 Front instrument panel change 30 10 line 3 Rea r Instrument p anet chano es 10 Line 4 line 5 Bagoaoe Aft or rear pilot seat no lnnuenc e E on centre ot g ravrty po11t on Weight lb 23 38 Fig 6 1 Nov 30 98 6 4 ...

Page 66: ...ning 691 80 27 43 18 976 07 Add Radio 1 25 23 0 28 75 Frt Mic so 45 0 22 50 Rr Mic so 5 0 2 50 Batteries 9 60 20 0 192 00 New Totals 703 65 27 17 19 116 82 MAC 65 18 Empty Sailplane P O Dox 869 675Airport Road Driggs ID 83422 Phone 208 354 3100 Fax 208 354 3200 ...

Page 67: ...ntre of gravity position of the empty sailplane a relative to the reference plane b relative to then mean aerodynamic chord R2 x 185 83 R1 x 22 32 XL 6 14 X 100 XL GL XT 51 102 XL 9 11 U in XT 6 Gi7 MAC The centre of gravity position of the empty sailplane calculated in Part B meets the type sailplane specification and makes it possible to achieve the required operational flight centre of gravity ...

Page 68: ...str panel 0 40 21 9 555 5 rear instr panel x J Electric LUN 1211 1 0 79 69 9 1775 5 turn and front instr panel 0 36 21 9 555 5 Ibank side rear instr panel indicator I x Vertical speed LUN 1141 04 1 06 70 4 1788 5 Iindicator front instr panel 0 48 22 4 568 5 t 10 knots rear instr panel I x Vertical speed LUN 1147 23 8 1 10 69 6 1768 5 indicator front instr panel 0 50 60 knots Ix jMagnetic LUN 1221 ...

Page 69: ... Subject Type Wfil Arm from the b reference datum kg rib No 1 in mm x Side hooks A 001 023 L 0 99 0 6 16 A 001 023 P 0 45 x Cable Tube 0 26 0 6 16 protection 0 12 x Transceiver unit x Paint Polyuretan 18 74 40 9 1038 8 5 A standard B non standard Nov 30 98 6 7 ...

Page 70: ...seat Rear seat Front seat Rear seat Front seat Rear seat Date Signed tl m Max Min Max Min Max Min Max Min Max Min Max Min 0 Il 1 dqp_ f 6l so 451 gso l J r IlD tf9f 9 0 1 P o 2 r qp_ 6J 66 2 50 1J 6 2J O 1r 2 0 f5 6 il Pl fJ 3 eq2 6 ib5 1Jt 1lf7 lS 0 Jr 6 eb O 1 6 L 0 ZIPP 1 c I en r r L r z m Ol J i z z c r CJ 0 r w 1 Single seat 2 Tandem seater front pilot max weight 0 w CX 3 Tandem seater rear ...

Page 71: ...scription CONTENTS 7 1 Introduction 7 2 Cockpit Control 7 3 instrument Panel 7 4 Landing Gear System 7 5 Seats and Safety Harness 7 6 Pitot and Static Sytem 7 7 Air Brake System 7 8 Baggage Compartment 7 9 Water Balast System 7 10 Not used 7 11 Not used 7 12 Electrical System Nov 30 98 7 1 ...

Page 72: ... The detailed description and operation of the sailplane and its systems is given in the Maintenance Manual of the L 13 AC BLANIK sailplane 7 2 COCKPIT CONTROLS See item 7 3 7 3 INSTRUMENT PANEL The front and rear cockpit with instrument panels instruments and control elements is represented schematicaly in this item See Fig 7 1 and 7 2 cont Nov 30 98 7 2 ...

Page 73: ...d 22 Label Elevator trim control 23 Label Wheel brake 24 Label No smoking 25 Label Tow release 26 Label Max airspeeds 27 Identification number 28 Label TURN AND BANK INDICATOR 29 Accelerometer 30 Label Air vent 3 1 Label Landing gear extended 32 Label Landing gear retracted 33 Label Adjustment of pedals 34 Label Min pilot weight 35 Label canopy jettison 36 Label Max alowable speed vs altitude 37 L...

Page 74: ... Vertical speed indicator 18 Microphone optional 19 Label Air brakes extended 20 Label Air brakes retracted 21 Label Canopy lift off 22 Label Elevator trim control 23 Label Wheel brake 24 Label No smoking 25 Label Tow rel ease 26 Label Max airspeeds 27 Identification number 28 Label TURN AND BANK INDICATOR 29 Accelerometer 30 Label Canopy jettison 31 Label Max alowable speed vs altitude 32 Label A...

Page 75: ...s of the strap 10 which is attached by the bolt with washers on the left side and by the shortening device 18 on the right side of the frame The rearback rest is fixed attached to the floor on the bottom it is folding in the upper part for the acces into the baggage compartment and locked with the lock to the frame No 5 The installation and dismantling of the seat with the load is mentioned on the...

Page 76: ...the rest suspender 3 Move the levers pos 3 on the seat sides upwards pawls will shift in the seat face and fold the seat pos 1 to the floor 4 Move the levers pos 3 downwards the pawls will shift out of the seat by this and they must shift into the holes on the floor frame if the pawls do not shift in the holes move the seat to both sides to enable shifting of the pawls in the holes B Seat removal ...

Page 77: ...L13AC 1013 3 7 6 PITOT STATIC SYSTEM 5 8 _ Fig 7 5 1 Airspeed indicator 2 Altimeter 3 Vertical speed indicato r 4 Vertical speed indicator 5 Total pressure tube 6 Static pressure sensors 7 Compensated pressure tube 8 Moisture trap Nov 30 98 7 7 ...

Page 78: ... is possible too complete ly exclude the suction of the upper air brake during flight by adjusting both tie rods without any a of the forces in the control mechanism The air brake is secured in the open position with a stop Air brakes are extended or retracted by shifting of the lever on the cockpit left side see Fig 7 1 and 7 2 Air brakes using during flight is described in this flight manual on ...

Page 79: ...icators on the front and rear instrument panel Wiring diagram of LU N 1211 1 turn and bank indicator A on the sailplanes with the connection through the voltage regulator type of 12 4 5 Vss and on the board battery of 12 V B on the sailplanes with the connection on the battery of 4 5 Vss 4 3 5 6 Fig 7 7 1 Turn and bank indicator 2 Voltage regulator type of 12 4 5 v DC 3 Switch 4 Connecting block S...

Page 80: ...NUAL Do L13AC 1013 3 Section 8 Sailplane Handling Care and Maintenance CONTENTS 8 1 Introduction 8 2 Sailplane Inspection Period 8 3 Sailplane Alternation or Repairs 8 4 Ground Handling Road Transport 8 5 Cleaning and Care Nov 30 98 8 1 ...

Page 81: ...l items 4 3 and 4 4 Periodical inspections intervals and scope see Maint enance Manual item 2 2 3 Periodical maintenance 8 3 SAILPLANE ALTERNATIONS OR REPAIRS Before each sailplane alternation contact appropriate CAA to ensure adequate level of operation Instruments and aggregates which were recognized as disable for the further operation can be replaced only by the same type of the instruments ag...

Page 82: ...ble to shorten it by means of a loop b Parking The following ground equipment is intended for securing of the sailplane during the parking blocking fork for controls blocking optional blocking is performed in the rear cockpit plug of the sensor of compensated pressure cockpit cover For more details see Maintenance Manual item 3 1 o c Mooring If the sailplane is to be parked out of hangar it is to ...

Page 83: ...aft cockpit canopy and to the glases of left and right side windows The cockpit canopy is made of plexiglass remove the soil powder mud etc with wet soft cloth or with bucksin polish the glases with clean flannel rag after cleaning CAUTION It is prohibited to use the lacquer thinners petrol benzol alcohol turpentine nitrolacquers and the agents containing the silicon oil Wash the soil on the outer...

Page 84: ...QI L 13 AC BLANIK Con SAILPLANE FLIGHT MANUAL Do L13AC 1013 3 Section 9 Supplements Contents 9 1 Introduction 9 2 List of Inserted Supplements 9 3 Supplements Inserted Nov 30 99 9 1 ...

Page 85: ...e supplementary information on sailplane operation The information contained in this document supplements or superseds the basic Sailplane Flight Manual where covered in the sections contained herein For limitations procedures and performance not contained in this supplement consult the basic Sailplane Flight Manual _ _ 9 2 LIST OF INSERTED SUPPLEMENTS Date of Doc No Title of inserted supplement i...

Page 86: ...b 5 L 13 AC BLANIK A l COmOQr IY SAILPLANE FLIGHT MANUAL Do L13AC 1013 3 Date of Doc No Title of inserted supplement insertion I I I I I I I I I Nov 30 99 9 3 ...

Page 87: ...c w L 13 AC BLANIK M Av esCOC r IPQ r SAILPLANE FLIGHT MANUAL Do L13AC 1013 3 Date of Doc No Title of inserted supplement insertion I I I I Nov 30 99 9 4 ...

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