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MDM -1 FOX Flight Manual

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Zakład Remontów i Produkcji Sprzętu Lotniczego
Pages identified by "Appr." are approved by airworthiness Authority
Original date of approval:
This glider is to be operated in compliance with information and limitations contained in this Manual.
Translated by :
.....................
Tadeusz Zboś, MSc. Eng.
Edward Margański
Bielsko - Biała, POLAND
F L I G H T M A N U A L
MDM-1 „FOX" G L I D E R
Issue III, October 1996
Factory No
Registration marking
(Civil Aircraft Inspection Board, POLAND).
o f

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  • Page 1 Zakład Remontów i Produkcji Sprzętu Lotniczego Edward Margański Bielsko - Biała, POLAND F L I G H T M A N U A L MDM-1 „FOX“ G L I D E R Issue III, October 1996 Factory No Registration marking Pages identified by "Appr."...

  • Page 2: Issuances

    Issue III MDM-1 „FOX” FLIGHT MANUAL ISSUANCES RECORD OF REVISIONS Any revision of the present Manual must be recorded in the following table, and in case of approved pages 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 Number and the date will be shown on the bottom left hand of the page.
  • Page 3 Issue III MDM-1 „FOX” FLIGHT MANUAL LIST OF EFFECTIVE PAGES Section Page Date of Issue Section Page Date of Issue June 2019 October 1996 June 2019 October 1996 October 1996 January 1999 October 1996 October 1996 July 1998 October 1996...
  • Page 4 Issue III MDM-1 „FOX” FLIGHT MANUAL LIST OF EFFECTIVE PAGES Section Page Date of Issue Section Page Date of Issue June 2019 October 1996 0.2A June 2019 October 1996 October 1996 January 1999 October 1996 October 1996 July 1998 October 1996 October 1996 7.3A June...

  • Page 5: Table Of Contents

    Issue III MDM-1 „FOX” FLIGHT MANUAL TABLE OF CONTENTS 0. ISSUANCES 1. GENERAL (a non-approved section) 2. LIMITATIONS (an approved section) 3. EMERGENCY PROCEDURES (an approved section) 4. NORMAL PROCEDURES (an approved section) 5. PERFORMANCE (a partly approved section) 6. WEIGHT AND BALANCE (a non-approved section) 7.

  • Page 6: General

    Issue III MDM-1 „FOX” FLIGHT MANUAL Section 1 GENERAL 1.1. Introduction 1.2. Certification basis 1.3. Warnings, cautions and notes 1.4. Glider description and technical data 1.5. Three-view drawing...
  • Page 7 Glider description and technical data. MDM-1 „FOX” is a two-seat performance aerobatic glider, mid-wing layout with conventional tail-unit arrangement. The structure of glass/epoxy and carbon/epoxy composite. Wings : Two-panel planform of considerable taper.
  • Page 8 Issue III MDM-1 „FOX” FLIGHT MANUAL Fuselage : Monocoque, sandwich structure with integral fin. The seat pans bonded permanently. Two-piece, side hinged canopy opening sidewards to the right. In fuselage nose the total pressure port and air intake for air vent are provided, static pressure ports on the fuselage nose both sides.
  • Page 9 Issue III MDM-1 „FOX” FLIGHT MANUAL M a i n t e c h n i c a l d a t a : Span 14.00 [m] 45.93 [ft] Length (up to rudder top edge) 7.38 [m] 24.21 [ft] Height (in flight attitude) 2.25 [m]...
  • Page 10 Issue III MDM-1 „FOX” FLIGHT MANUAL Three-view drawing.

  • Page 11: Limitations

    Issue III MDM-1 „FOX” FLIGHT MANUAL Section 2 LIMITATIONS 2.1. Introduction 2.2. Airspeed 2.3. Airspeed indicator markings 2.3A. Electronic accelerometer markings 2.4. Power plant, fuel and oil. - NOT APPLICABLE 2.5. Power plant instrument markings. - NOT APPLICABLE 2.6. Weight 2.7.
  • Page 12 Issue III MDM-1 „FOX” FLIGHT MANUAL Introduction. Section 2 includes operating limitations, instrument markings and basic placards informing on limitations necessary for safe operation of the glider, its systems and standard equipment. The limitations contained in this Section and in Section 9 have been approved by Civil Aircraft Inspection Board.
  • Page 13 Issue III MDM-1 „FOX” FLIGHT MANUAL Airspeed indicator markings Airspeed indicator markings and their colour-code significance are shown below: Marking (IAS) value or range Significance [km/h] [kt] Green arc 92 ÷ 225 50 ÷ 122 Normal operating range. Lower limit is 1.1 V at maximum weight and most forward C.G.
  • Page 14 Issue III MDM-1 „FOX” FLIGHT MANUAL Weight Maximum take-off & landing weight 530 [kG] 1168 [lb] Maximum take-off & landing weight 450 [kG] 992 [lb] for the range of manoeuvring load factor extended to +9/ -6 g in solo flight...
  • Page 15 Issue III MDM-1 „FOX” FLIGHT MANUAL 2.11 Kinds of operation Flying in anticipated icing conditions and night flying - PROHIBITED. Cloud flying - ALLOWED, provided pilot and glider meet National Regulations. 2.12 Minimum equipment Minimum equipment of the glider depends on the intended type of operation and consists identification of components, location and range of indication (where specified) as shown below component &...
  • Page 16 Issue III MDM-1 „FOX” FLIGHT MANUAL 2.15 Limitations placards. The following placards should be placed in a visible place in the cockpit: LIMITATIONS 1. Night flying prohibited 2. Cloud flying allowed, provided pilot and glider meet National Regulations 3. Flying in anticipated icing conditions prohibited 4.
  • Page 17 Issue III MDM-1 „FOX” FLIGHT MANUAL 2.15 Limitations placards. The following placards should be placed in a visible place in the cockpit: LIMITATIONS 1. Night flying prohibited. 2. Cloud flying allowed, provided pilot and glider meet National Regulations. 3. Flying in anticipated icing conditions prohibited.

  • Page 18: Emergency Procedures

    Issue III MDM-1 „FOX” FLIGHT MANUAL Section 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. Power-plant failure - NOT APPLICABLE 3.8. Fire 3.9. Other emergencies 3.1A...
  • Page 19 Issue III MDM-1 „FOX” FLIGHT MANUAL Introduction. Section 3 provides the exact procedures for coping with emergencies that may occur. Canopy jettison. 1. Pull back with both hands simultaneously the red lever on the right hand canopy side and the canopy opening lever on the left hand side.
  • Page 20 Issue III MDM-1 „FOX” FLIGHT MANUAL Spin recovery. The spinning is unstable. During the spinning, the oscillations of both pitch and rotational speed may occur. The recovery delay reaches its maximum value in the second turn, where both the acceleration of autorotation and spin flattening appear.

  • Page 21: Normal Procedures

    Issue III MDM-1 „FOX” FLIGHT MANUAL Section 4 NORMAL PROCEDURES 4.1. Introduction 4.2. Rigging and de-rigging 4.3. Daily inspection 4.4. Pre-flight inspection 4.5. Normal procedures and recommended speeds 4.5.1. Launch, run up, ground rolling 4.5.2. Take-off and climb 4.5.3. Flight 4.5.4.
  • Page 22 Issue III MDM-1 „FOX” FLIGHT MANUAL Introduction. Section 4 provides the procedures for the conduct of normal operation. Normal procedures associated with optional equipment can be found in Section 9. Rigging and de-rigging. Four persons, having the basic technical skill, are necessary to perform the glider de-rigging after an off- field landing.
  • Page 23 Issue III MDM-1 „FOX” FLIGHT MANUAL 4.2.2 De-rigging the wings. Two persons hold the glider at the wing tips.  Remove the safety pins, unlock the main bolts rotating downwards the safety devices, protecting the bolts against shifting-off. (The safety pins and devices are located at bolt front face, accessible from the cockpit inside).
  • Page 24 Issue III MDM-1 „FOX” FLIGHT MANUAL Daily inspection. Check : 1. Glider documents (verify and complete required entries). 2. External inspection, structure integrity and surface condition. 3. Securing of connecting elements and coupling in control systems. Securing of main bolts in wing and tailplane fittings, and control systems where accessible.
  • Page 25 Issue III MDM-1 „FOX” FLIGHT MANUAL Pre-flight inspection. 1. Check securing of connecting elements and coupling in control systems, as in item 4.3.3. 2. Remove / fasten loose items in the cockpit, check reliable installation of balancing weights (if present).
  • Page 26 Issue III MDM-1 „FOX” FLIGHT MANUAL 3. Aerotowed take-off - ON NOSE HOOK ONLY!  When tensioning the tow cable, brake on the wheel. This prevents rolling the wheel over the cable. In case of surge and slackening of the tow cable, release it immediately.
  • Page 27 Issue III MDM-1 „FOX” FLIGHT MANUAL 4.5.6 Flight with water ballast. - NOT APPLICABLE 4.5.7 High altitude flight. Due to the lack of oxygen equipment, high altitude flights are only allowed up to 3000 [m] (9840 [ft]) pressure altitude. Remember to reduce the VNE with altitude, as per instruction in FM item 2.2 Airspeed, to ensure safe margin against flutter critical speed.
  • Page 28 Issue III MDM-1 „FOX” FLIGHT MANUAL 4.5.9 Aerobatics. Before aerobatics:  tighten pilot’s belts, and check the securing of its lock  check locking of air brake  trim the glider for an entry speed, proper for the planned manoeuvre The glider performs correctly the manoeuvres listed in Table 1.
  • Page 29 Issue III MDM-1 „FOX” FLIGHT MANUAL Table 1. Allowed aerobatic manoeuvres Item Manoeuvre FAI catalogue symbol Average (IAS) Entry load factor airspeed [km/h] ([kt]) 190÷210 Normal loop (103÷113) 240÷260 Inverted loop upwards (from inverted flight) (130÷140) 100 ÷110 Inverted loop - 4.5...
  • Page 30 Issue III MDM-1 „FOX” FLIGHT MANUAL Fig. 9 Example of competition program The altitude loss for this program in the smooth air should not exceed 900 [m] (2950 [ft]). Appr. 4.10...

  • Page 31: Performance

    Issue III MDM-1 „FOX” FLIGHT MANUAL Section 5 PERFORMANCE 5.1. Introduction 5.2. Approved data 5.2.1. Airspeed indicator system calibration 5.2.2. Stall speeds 5.2.3. Take-off performance - NOT APPLICABLE 5.2.4. Additional information 5.3. Non-approved further information 5.3.1. Demonstrated cross-wind performance 5.3.2. Flight polar...
  • Page 32 The data in the charts has been computed from actual flight tests with the glider in good condition and using average piloting technique. Approved data. 5.2.1 Airspeed indicator system aerodynamic correction. Calibration of airspeed indicator system. MDM-1 „FOX” glider, Fact. No P-13. Appr. 5.2...
  • Page 33 Issue III MDM-1 „FOX” FLIGHT MANUAL 5.2.2 Stall speeds. Stall speed (IAS) for in-flight weight Crew 1 person 2 person [kG] All-up weight [lb] 1003 1169 [km/h] Stall speed in smooth configuration [kt] [km/h] Stall speed with air brake extended [kt] Approach to stall is indicated with the perceptible and audible oscillations (buffeting).
  • Page 34 Issue III MDM-1 „FOX” FLIGHT MANUAL 5.2.3 Take-off performance. - NOT APPLICABLE 5.2.4 Additional information. NO ADDITIONAL INFORMATIONS. Non approved further information. NO FURTHER INFORMATIONS 5.3.1 Demonstrated cross-wind performance. Aerotowed take-offs and landings have been demonstrated with a cross-wind component up to 17 [km/h]...
  • Page 35 Issue III MDM-1 „FOX” FLIGHT MANUAL 5.3.2 Flight polar: 515 kG 435 kG Flight polar of MDM-1 „FOX” for in-flight weight of 515 [kG] and 435 [kG] (calculated).

  • Page 36: Weight And Balance

    Issue III MDM-1 „FOX” FLIGHT MANUAL Section 6 WEIGHT AND BALANCE 6.1. Introduction 6.2. Records of actual weighing / permitted payload range...
  • Page 37 Issue III MDM-1 „FOX” FLIGHT MANUAL Introduction. This Section contains the payload range within which the glider may be safely operated. Procedures for weighing the glider, method of C.G. location calculation and a comprehensive list of all equipment available for this glider, as well as the equipment installed during weighing of the glider are...
  • Page 38 Issue III MDM-1 „FOX” FLIGHT MANUAL Records of actual weighing / permitted payload range. Permitted crew weight S/N....Date Empty C.G. 2 person crew 1 person crew Approved weight position with balancing without balancing weights weights without balancing with balancing...

  • Page 39: Glider And Systems Description

    Issue III MDM-1 „FOX” FLIGHT MANUAL Section 7 GLIDER AND SYSTEMS DESCRIPTION 7.1. Introduction 7.2. Cockpit controls 7.3. Instrument panel 7.4. Landing gear retracting system - NOT APPLICABLE 7.5. Seats and safety harness 7.6. Instrument pneumatic system 7.7. Airbrake control system 7.8.
  • Page 40 Issue III MDM-1 „FOX” FLIGHT MANUAL Introduction. This Section provides description and operation of the glider and its systems. Refer to Section 9 for details of optional equipment. Cockpit controls. General view from glider front and rear seat is shown in Figs. 7.1 and 7.2.
  • Page 41 Issue III MDM-1 „FOX” FLIGHT MANUAL Fig.7.1 Front seat view. Rev. 7/ June 2019...
  • Page 42 Issue III MDM-1 „FOX” FLIGHT MANUAL Fig.7.1 Front seat view 7.3A Rev. 7/ June 2019...
  • Page 43 Issue III MDM-1 „FOX” FLIGHT MANUAL Fig.7.2 Rear seat view.
  • Page 44 Issue III MDM-1 „FOX” FLIGHT MANUAL Fig.7.2 Rear seat view. 7.4A Rev. 7/ June 2019...
  • Page 45 Issue III MDM-1 „FOX” FLIGHT MANUAL Instrument panel. Instrument panel at front seat is shown in Fig. 7.1. Instrument panel at rear seat is shown in Fig. 7.2. On the glider with electronic accelerometer installed, the initial setup for acceleration range and...
  • Page 46 Issue III MDM-1 „FOX” FLIGHT MANUAL Fig. 7.3 Scheme of board instruments pneumatic system 1 - airspeed indicator 2 - altimeter 3 - variometer 4 - accelerometer 5 - turn or bank indicator 6 - compass 7 - total energy compensator...
  • Page 47 Issue III MDM-1 „FOX” FLIGHT MANUAL Fig. 7.3 Scheme of board instruments pneumatic system Pneumatic system markings Pneumatic system general marking type of pressure Total pressure Static pressure probe pressure (total energy) Compensation pressure (comp. bottle - variometer) 1 - airspeed indicator...
  • Page 48 Issue III MDM-1 „FOX” FLIGHT MANUAL Air brake control system. The glider is equipped with the plate air brake, extended on the upper wing surface. Control system is of combined type. From cockpit lever to fuselage torque tube - cables, further in the wings, the push rods are employed.
  • Page 49 Issue III MDM-1 „FOX” FLIGHT MANUAL Section 8 GLIDER HANDLING, CARE AND MAINTENANCE 8.1. Introduction 8.2. Glider inspection periods 8.3. Glider alterations and repairs 8.4. Ground handling and road transportation 8.5. Cleaning and care...
  • Page 50 Issue III MDM-1 „FOX” FLIGHT MANUAL Introduction. The Section contains manufacturer's recommended procedures for proper ground handling and servicing of the glider. It also identifies certain inspection and maintenance requirements which must be followed if the glider is to retain that new-plane performance and dependability.
  • Page 51 Issue III MDM-1 „FOX” FLIGHT MANUAL 8.4.2 Transportation in a trailer. To the order, the producer delivers the COBRA-FOX closed trailer, together with an instruction for loading the glider into trailer. In case the glider is transported with other type of trailer, it is to user's responsibility.
  • Page 52 Issue III MDM-1 „FOX” FLIGHT MANUAL Cleaning and care. The wing leading edge, and external lacquer coats should be cleaned with the soft flannel cloth, or shammy. The canopy should be protected against dust with the cover of soft fabric.

  • Page 53: Supplements

    Issue III MDM-1 „FOX” FLIGHT MANUAL Section 9 SUPPLEMENTS 9.1. Introduction 9.2. List of inserted supplements 9.3. Supplements inserted...
  • Page 54 Issue III MDM-1 „FOX” FLIGHT MANUAL Introduction. This Section contains the appropriate supplements necessary to safely and efficiently operate the glider when equipped with various additional devices. List of inserted supplements. Date of insertion Issue Title of inserted supplements Supplements inserted...

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