Piper PA34-200T Seneca II

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Revision as of 13:22, 4 July 2006 by T3r (talk | contribs) (→‎Engines)
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Introduction

The real Seneca II

This is a model of a Piper PA34-200T Seneneca II. The Seneca is made by Piper since the early 1970's and some 4500 were made since then. It has six seats in a pretty large cabin, two turbocharged counterrotating engines producing 200hp up to 12,000 ft. It cruises at 170ktas in 12,000ft at 65% power. Certification for flights into known icing conditions and the nice single engine behaviour made the Seneca a popular multi engine trainer.

The model was built using the Pilots Operating Handbook, a real Seneca (D-GEJL) and some flight performance data derived in real flights.
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General

Engines

Number of Engines 2
Engine Manufacturer Continental
Engine Model Number (L)TSIO-360EB
Rated Horsepower Sea Lever: 200, 12,000ft.: 215
Rated Speed (rpm) 2575
Bore (inches) 4.438
Stroke (inches) 3.875
Displacement (cubic inches) 360
Compression Ratio 7.5:1
Engine Type Six Cylinder, Direct Drive, Horizontally Opposed, Air Cooled

Propellers

Number of Propellers 2
Propeller Manufacturer Hartzell
Number of Blades 2
Propeller Diameter Maximum: 76 inches, Minimum: 75 inches
Propeller Type Constant Speed, Hydraulically Actuated, Full Feathering

Fuel

Fuel Capacity (U.S.gal) (total) 128
Usable Fuel (U.S.gal) (total) 123
Minumum Grade 100 Green or 100LL Blue Aviation Grade

Oil

Oil Capacity (U.S.quarts) (per engine) 8

Maximum Weights

Maximum Takeoff Weight (lbs) 4570
Maximum Landing Weight (lbs) 4362
Maximum Zero Fuel Weight (lbs) - Standard 4000
Maximum Weight in Baggage Compartment (lbs) Forward: 100, Aft: 100

Development status/Issues/Todo

FDM (JSBSim):

  • poor single engine performance
  • no EGT indication - EGT is to low
  • supercharger code not realistic on low rpm
  • fuel source not switchable or cuttable

FDM (YASim)

  • not converging

Electrical system

  • Master switch no electrical function
  • Generator L/H and R/H produce the same output when on

Autopilot

  • Just interfacing the generic AP, Altimatic IIIC not implemented
  • LOC NORM and LOC REV not implemented
  • ILS not implemented

Avionics

  • GMA340: on some buttons, the first click after program start gets lost

General:

  • engine sound in cockpit does not differ from outside engine sound
  • animations of structural icing on wings, stabilizer, fin, etc.missing

External links

Related content

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Aircraft

Aircraft Todo