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HPH Glasflügel 304 C Flight Manual

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  • Page 1 á á á á Č Č á á Ltd.
  • Page 2 á á á á Č Č á á Ltd. Glasflügel 304 C ............Type Certificate No.: 98-03 Date of Issue: 12/01 Pages identified by “Appr” are approved by: Signature: ..........Authority: ..........Stamp: Original date of approval: ..........Approved under Ref. No.: ..........
  • Page 3 Ltd. Record of revisions Any revision of the present manual, except actual weighing data, must be recorded in the following table and in case of approved Sections endorsed by the responsible airworthiness authority. The new or amended text in the revised page will be indicated by a black vertical line in the left hand margin, and the Revision No.
  • Page 4 Ltd. List of Effective Pages Section Page Date of Section Page Date of Issue Issue Appr. 12/01 12/01 2-10 Appr. 12/01 12/01 2-11 Appr. 12/01 12/01 12/01 Appr. 12/01 12/01 Appr. 12/01 12/01 12/01 12/01 Appr. 12/01 12/01 Appr. 12/01 12/01 Appr.
  • Page 5 Ltd. Section Page Date of Section Page Date of Issue Issue Appr. 12/01 12/01 Appr. 12/01 12/01 Appr. 12/01 12/01 12/01 12/01 12/01 12/01 12/01 12/01 12/01 12/01 12/01 12/01 12/01 12/01 12/01 12/01 Document No.: G304C/AFM Date of Issue: 12/01...

  • Page 6: Table Of Contents

    Ltd. Table of Contents Section General ..................1 (a non-approved section) Limitations ................2 (an approved section) Emergency procedures ............3 (an approved section) Normal procedures ..............4 (an approved section) Performance ................5 (a partly approved section) Weight and balance / equipment list ........6 (a non-approved section) Sailplane and systems description ........7 (a non-approved section)

  • Page 7: General

    Ltd. SECTION 1 1. General 1.1 Introduction 1.2 Certification basis 1.3 Warnings, cautions and notes 1.4 Descriptive data 1.5 Three-view drawing Document No.: G304C/AFM Date of Issue: 12/01...
  • Page 8 Ltd. Document No.: G304C/AFM Date of Issue: 12/01...
  • Page 9 Ltd. Introduction The sailplane flight manual has been prepared to provide pilots with information for the safe and efficient operation of the Glasflügel 304 C sailplane. This manual includes the material required to be furnished to the pilot by JAR-22. It also contains supplemental data supplied by the sailplane manufacturer.
  • Page 10 Ltd. Warnings, cautions and notes The following definitions apply to warnings, cautions and notes in the flight manual. WARNING Means that the non-observation of the corresponding procedure leads to an immediate or important degradation of the flight safety. CAUTION Means that the non-observation of the corresponding procedure leads to a minor or to a more or less long term degradation of the flight safety.
  • Page 11 Ltd. Descriptive data Glasflügel 304 C is single-seat all-fiberglass construction (GRP) sailplane of FAI standard class. Sailplane description Fuselage The fuselage tapers behind the wing, the faired-in one piece canopy is hinged forward. The fuselage shell is of GRP single skin construction, therefore capable of large energy absorption.
  • Page 12 Ltd. Vertical Tail Unit The fin and the rudder are similarly as the stabilizer of GRP-Foam- Sandwich Shell construction. The rudder has an internal drive thus the fuselage outline is not disturbed. Cockpit interior Headrest, backrest and rudder pedals are adjustable in flight. Seat cushions are as well the sailplane standard equipment.
  • Page 13 Ltd. Basic Technical Data Wing Span .........15 m....49.21 ft Wing area ......9.88 m ....106.35 ft Aspect ratio ....22.78 Fuselage Length ......6.45 m....21.16 ft Width ......0.62 m....2.03 ft Height ......1.36 m....4.46 ft Cockpit height....0.83 m....2.72 ft Horizontal Tail Unit Span ........2.1 m....
  • Page 14 Ltd. Three-view drawing Document No.: G304C/AFM Date of Issue: 12/01...

  • Page 15: Limitations

    Ltd. SECTION 2 2. Limitations 2.1 Introduction 2.2 Airspeed 2.3 Airspeed indicator markings 2.4 Weight 2.5 Center of Gravity 2.6 Approved maneuvers 2.7 Maneuvering load factors 2.8 Flight crew 2.9 Kinds of operation 2.10 Minimum equipment 2.11 Aerotow and winch-launching 2.12 Other limitations Limitations placards Document No.:G304C/AFM...
  • Page 16 Ltd. Introduction Section 2 includes operating limitations, instrument markings, and basic placards necessary for safe operation of the sailplane, standard systems and standard equipment. The limitations included in this section and in Section 9. have been approved by the CAA, Czech Republic. Airspeed Airspeed limitations and their operational significance are shown below:...
  • Page 17 Ltd. CAUTION Keep in mind, that a difference between Indicated Air Speed (IAS) shown by your airspeed indicator and True Air Speed (TAS) is increasing with an altitude increase. This has no influence on the sailplane strength or load, however due to flutter safety the IAS limits shown in table below must not be exceeded in given altitudes.
  • Page 18 Ltd. Airspeed indicator markings Airspeed indicator markings and their color-code significance are shown below: Marking Value or range IAS Significance [km/h] KIAS [mph] Green Normal operating range 94-200 51-108 58-124 Maneuvers must be Yellow 200-250 108-135 124-155 conducted with caution and only in smooth air Maximum speed for all line...
  • Page 19 Ltd. Maximum water ballast weight is shown in table as follows: Cockpit load Empty 65 kg 70 kg 80 kg 90 kg 100 kg 110 kg weight 143 lbs 154 lbs 176 lbs 198 lbs 220 lbs 242 lbs 230 kg 115 kg 115 kg 115 kg...
  • Page 20 2.4 kg (5.3 lbs) of the pilot‘s weight. Maximum lead ballast capacity of the ballast box is 6 kg (13.2 lbs). Suitable lead ballast plates are available from HPH Ltd. . The empty sailplane C.G. may fit in some cases above or below the...
  • Page 21 Ltd. Approved maneuvers This sailplane is certified in the UTILITY category. Approved maneuvers and input air speeds are shown in the following table: Maneuver Input IAS Spin 60 km/h 32 KIAS 37 mph Lazy eight 180 km/h 97 KIAS 112 mph Inside loop 200 km/h 108 KIAS...
  • Page 22 Ltd. Flight crew Number of seats ........ 1 Minimum cockpit load....70 kg 154 lbs Maximum cockpit load....110 kg 242 lbs WARNING If the weight of pilot with parachute does not reach the minimum cockpit load placarded, than appropriate amount of lead ballast must be installed.
  • Page 23 Ltd. Minimum equipment for cloud flights, additionally to the Minimum Equipment : • 1 Magnetic compass • 1 Vertical speed indicator • T/B indicator as well as other equipment as required by the national regulations Equipment for the basic aerobatic maneuvers (Refer to 2.6 for approved maneuvers) Next to the minimum equipment the following is recommended: •...
  • Page 24 Ltd. 2.12 Other limitations No smoking inside the sailplane ! Maximum weight of instrument panel ..10 kg....22 lbs Document No.:G304C/AFM Approved Date of Issue: 12/01...
  • Page 25 Ltd. 2.13 Limitations placards Document No.:G304C/AFM 2-10 Approved Date of Issue: 12/01...
  • Page 26 Ltd. WEIGHT MAX.TAKEOFF WEIGHT 450 kg 992 lbs MAX. WEIGHT FOR AEROBATIC 380 kg 838 lbs MAX.WEIGHT OF NON-LIFTING PARTS 240 kg 529 lbs PERMITTED COCKPIT LOAD 70÷110 kg 154-242 lbs NOSE BALLAST BALLAST MIN.WEIGHT OF PILOT 1.5 kg 3.3 lbs 66.4 kg 146 lbs 6.6 lbs...

  • Page 27: Emergency Procedures

    Ltd. SECTION 3 3. Emergency procedures 3.1 Introduction 3.2 Canopy jettison 3.3 Bailing out 3.4 Stall recovery 3.5 Spin recovery 3.6 Spiral dive recovery 3.7 Other emergencies 3.7.1 Wingtip catching in high grass during takeoff 3.7.2 Cable chute opening during winch-launching 3.7.3 Towing rope release at low height 3.7.4...
  • Page 28 Ltd. Introduction Section 3 provides checklist and amplified procedures for coping with emergencies that may occur. Canopy jettison 1. Grasp (from below) the red grips (right and left of the canopy frame) 2. Pull them back 3. Push the canopy upward. Bailing out 1.
  • Page 29 Ltd. Spiral dive recovery 1. Balance the bank by coordinate use of rudder and ailerons controls 2. Recover the dive Other emergencies 3.7.1 Wingtip catching in high grass during takeoff Take-Off's from not mowed grass runways should be avoided both for aerotow and winch-launching.

  • Page 30: Normal Procedures

    Ltd. SECTION 4 4. Normal procedures 4.1 Introduction 4.2 Rigging and de-rigging Daily inspection 4.4 Preflight inspection 4.5 Normal procedures and recommended speeds 4.5.1 Takeoff and climbing 4.5.2 Flight 4.5.3 Approach and landing 4.5.4 Flying with water ballast 4.5.5 High speed flight 4.5.6 Slow speed flight –...
  • Page 31 Ltd. Introduction Section 4 provides checklist and amplified procedures for the conduct of normal operation. Normal procedures associated with optional systems can be found in section 9. Rigging and de-rigging Rigging 1. Clean and grease pins and bearings. 2. In the cockpit, the airbrake lever is set in the central position, and the water ballast lever set in the closed position.
  • Page 32 Ltd. Daily inspection Daily inspection should be performed before each flight day opening, both after rigging the sailplane and parking in a hangar. When inspecting the sailplane check for cracks in surface finish, blisters or uneven surface, and if in doubt, check with authorized, specialized personnel.
  • Page 33 Ltd. e) Check function of tow release, condition and spacing of cable deflector plates. a) Check ailerons for full and free movement. a) Check air brakes for free movement and close fit. b) Check aileron trailing edges for damage. Lightly shake ailerons on the trailing edge to detect unusually large play in the system.
  • Page 34 Ltd. Refer to 2. Check the function of the nose release mechanism (if installed). After a hard landing, or excessively high "G" loads, the bending frequency of the wings must be checked and the sailplane carefully examined for any indications of damage. Dismantle the sailplane and check surface finish for cracks.
  • Page 35 Ltd. Normal procedures and recommended speeds 4.5.1 Takeoff and climbing Aerotow Approved ropes made of synthetic and natural fibers with length from 30 to 60 m (98 - 196ft.) may be used for aerotowing. If a nose hook is installed, we recommend to use this one. Nevertheless the C.G.
  • Page 36 Ltd. Winch-launching WARNING NEVER use the nose release mechanism (if installed) for winch- launching! Before takeoff adjust the trim depending on the cockpit load. The trim should be in neutral position if the sailplane C.G. ranges from forward to medium position. If the C.G. ranges from medium to rear position, then trim "nose heavy".
  • Page 37 Ltd. If possible, use small cable chutes to prevent deploying at flat climb angles. Max. winch-launching speed V 150 km/h 81 KIAS 93 mph Normal minimum towing speed.. 105 km/h 57 KIAS 65 mph with water ballast......120 km/h 65 KIAS 75 mph At maximum towing height, the cable will back release automatically, however, you should not neglect to pull the release...
  • Page 38 Ltd. 4.5.3 Approach and landing The normal approach speed with air brakes fully extended and the extended landing gear is approx. 85-90 km/h (46-49 KIAS, 53-56 mph) at the landing weight of 380 kg (838 lbs). The corresponding gliding ratio is then approx. 1:5. The minimum approach speed is 80 km/h (43 KIAS, 50 mph).
  • Page 39 Ltd. 4.5.4 Flying with water ballast The use of water ballast is not of benefit when climbing at the average climbing speeds less than 1.5m/sec (300 ft/min). This is valid also for flights in tight thermals, which require steep angles of bank. Prior to adding water ballast, check the table in 2.4 for the maximum weight of water ballast.
  • Page 40 Ltd. During extreme turbulence, as it may occur for instance in wave rotors, thunderclouds, visible up-currents (stubble fire), or while crossing mountain ranges, the maximum speed in rough air V 200 km/h (108 KIAS, 124mph) should not be exceeded. The necessary control column travel is relatively small from the stalling speed to the maximum speed, in particular at rear C.G.
  • Page 41 Ltd. 4.5.7 Cloud flying The spin should not be used as a safety escape outside a cloud, as the sailplane may change over into a spiral dive. It is rather recommended to open the air brakes fully at speed of 130 km/h IAS (70 KIAS, 81mph) and at load factor above 2 "G".
  • Page 42 Ltd. 4.5.10 Aerobatics Refer to 2.6 for Approved maneuvers Inside loop Slightly push the control stick forward to increase sailplane speed above 180 km/h IAS (97 KIAS, 112 mph) (recommended is 200 km/h, 108 KIAS, 124 mph). Then continuously pull the stick so that the sailplane nose will be lifted and g acting on the pilot will increase continuously.
  • Page 43 Ltd. Proportionally opposite ailerons may help to maintain the plane of turning. After the sailplane turns its nose downward into opposite direction, neutralize ailerons and rudder, so that the sailplane flies out accurately into opposite direction (180° ). Recover gently without exceeding the load factors. Lazy eight Slightly push the control stick forward to reach entry speed not less than 180 km/h IAS (97 KIAS, 112 mph) (recommended is 200 km/h,...

  • Page 44: Performance

    Ltd. SECTION 5 5. Performance 5.1 Introduction 5.2 Approved data 5.2.1 Airspeed indicator system calibration 5.2.2 Stall speeds 5.3 Non-approved further information 5.3.1 Demonstrated crosswind performance 5.3.2 Speed polar Document No.: G304C/AFM Approved Date of Issue: 12/01...
  • Page 45 Ltd. Introduction Section 5 provides approved data for airspeed calibration, stall speeds and non-approved further information. The data in the charts has been computed from actual flight tests with the sailplane using average piloting techniques. Document No.: G304C/AFM Date of Issue: 12/01 Approved...
  • Page 46 Ltd. Approved data 5.2.1 Airspeed indicator system calibration Document No.: G304C/AFM Date of Issue: 12/01 Approved...
  • Page 47 Ltd. 5.2.2 Stall speeds Takeoff Weight Air brakes 350 kg 400 kg 450 kg 175 lbs 200 lbs 225 lbs 60 km/h 75 km/h 81 km/h Retracted 32 KIAS 40 KIAS 44 KIAS 37 mph 47 mph 50 mph 67 km/h 80 km/h 85 km/h Extended...
  • Page 48 Ltd. Non-approved further information 5.3.1 Demonstrated crosswind performance Winch-launching takeoff..25 km/h 6.9 m/s 13.5 kts Aerotow takeoff .....23 km/h 6.4 m/s 12.4 kts Landing........23 km/h 6.4 m/s 12.4 kts 5.3.2 Speed polar Not measured so far Document No.: G304C/AFM Date of Issue: 12/01...

  • Page 49: Weight And Balance / Equipment List

    Ltd. SECTION 6 6. Weight and Balance 6.1 Introduction 6.2 Weight and Balance Record and permitted payload- range Document No.: G304C/AFM Date of Issue: 12/01...
  • Page 50 Ltd. Introduction This Section contains the payload range within the sailplane may be safely operated. Procedures for weighing the sailplane and the calculation method for establishing the permitted payload range and a comprehensive list of all equipment available for this sailplane and the installed equipment during the weighing of the sailplane are contained in the applicable Maintenance Manual, Document Number G304C/MM.
  • Page 51 Ltd. Weight and Balance Record and permitted payload- range valid for Serial No.: Permitted cockpit load [kg] or [lbs] Approved Empty with without Date weight water ballast water-ballast Max. Min. Max. Min. Date Signature Refer to Operating, Maintenance and Repair Manual, Document Number G304C/MM for minimum and maximum pilot weight calculation.

  • Page 52: Sailplane And Systems Description

    Ltd. SECTION 7 7. GENERAL SAILPLANE AND SYSTEMS DESCRIPTION 7.1 Introduction 7.2 Cockpit controls 7.3 Instrument panel 7.4 Landing gear system 7.5 Seats and safety harness 7.6 Pitot and static system 7.7 Airbrake system 7.8 Baggage compartment 7.9 Water-ballast system Document No.: G304C/AFM Date of Issue: 12/01...
  • Page 53 Ltd. Introduction This Section provides description and operation of the sailplane and its systems. Refer to Section 9, Supplements, for details of optional systems and equipment. Cockpit controls The below listed controls marked by the appropriate placards (refer to 2.13) are installed in the cockpit. More detailed description of some of the systems may be found below.
  • Page 54 Ltd. g) Canopy Lock The white grips on both sides of the cockpit frame serve for the canopy opening-closing. Closing: Handle the canopy frame, pull it downward and push white grips forward until they snap. Opening: Pull both white grips rearward and push canopy frame upward.
  • Page 55 Ltd. Instrument panel Document No.: G304C/AFM Date of Issue: 12/01...
  • Page 56 Ltd. Landing gear system The sailplane is fitted with a retractable main wheel and auxiliary tail wheel. The main landing gear is operated with a black lever located on the cockpit starboard side. to retract: Unlock black handle, pull backwards, then lock. to extend: Unlock, push black handle forward and lock.
  • Page 57 Ltd. Baggage compartment The baggage compartment may carry up to 10 kg (22 lbs) of baggage including all installed equipment, from that 5 kg (11 lbs) may be placed loose i.e. without fastening with the straps. Water-ballast system The water-ballast system is operated with a small lever located on the starboard side of the cockpit.

  • Page 58: Sailplane Handling, Care And Maintenance

    Ltd. SECTION 8 8. Sailplane handling, care and maintenance 8.1 Introduction 8.2 Sailplane inspection periods 8.3 Sailplane alterations or repairs 8.4 Ground handling / road transport 8.5 Cleaning and care Document No.: G304C/AFM Date of Issue: 12/01...
  • Page 59 Ltd. Introduction This Section contains manufacturer's recommended procedures for proper ground handling and servicing of the powered sailplane. It also identifies certain inspection and maintenance requirements which must be followed if the sailplane is to retain that new-plane performance and dependability. It is wise to follow a planned schedule of lubrication and preventive maintenance based on climatic and flying conditions encountered.
  • Page 60 Ltd. Ground handling / road transport The sailplane should only be stored or parked in well ventilated areas. Closed trailers should be equipped with sufficiently large ventilation. Always store with empty water tanks. Take note to store the sailplane without stresses. This is particularly important at higher temperatures.
  • Page 61 Ltd. Cleaning and care Wash the surface only with clean water, sponge and chamois. Never use petrol, alcohol or thinners. Soap additives in water should not be used too often. Polish as often as you wish, but take care not to heat up the surface when using a polishing machine, as otherwise the surface quality will suffer.

  • Page 62: Supplements

    Ltd. SECTION 9 9. Supplements 9.1 Introduction 9.2 List of inserted supplements 9.3 Supplements inserted Document No.: G304C/AFM Date of Issue: 12/01...
  • Page 63 Ltd. Introduction List of inserted supplements Date of Doc.No. Title of inserted supplement insertion Document No.: G304C/AFM Date of Issue: 12/01...
  • Page 64 Ltd. Supplements inserted Document No.: G304C/AFM Date of Issue: 12/01...

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