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Flight Test Log 5

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Summary
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[1] Tests of new landing skid, subscale and full scale.

[2] Full scale SVC tested with upper fuselage installed. Unpowered glide test.

[3] Tests of night flying, subscale.

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   Test ID:  14
      Date:  2005/03/04 (Fri)
      Time:  21:00
      Wind:  Calm
   Vehicle:  Styrofoam glider
     Scale:  N/A
  Location:  Pima-West

Tested glider with Cyalume lightsticks attached. Objective is to get a feel
for how practical it would be to do subscale flight tests at night at
Pima-West.

The reason for night testing is that our subscale models are extremely
sensitive to wind, since the models are lightweight and fragile for safety
reasons. Wind tends to die down at night in the Tucson area.

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   Test ID:  15
      Date:  2005/03/07 (Mon)
      Time:  10:00
      Wind:  Light breeze
   Vehicle:  SVC
     Scale:  41 %
  Location:  Globe

Test of new landing skid, subscale. A centerline skid was installed,
which replaced 3 smaller skids.

The rate of climb was good. Vehicle was flyable but a bit difficult to
control. Hard landing caused a bent propeller shaft.

The motor was one that had been slightly damaged in a previous flight by
coming loose and hanging by its leads.

The control difficulties may have been caused by excessive wind, altered
aerodynamics from the new landing skid, or lack of recent flying
experience by pilot.

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   Test ID:  16
      Date:  2005/03/07 (Mon)
      Time:  15:00
      Wind:  Light breeze
   Vehicle:  SVC
     Scale:  100 %
  Location:  Globe

Full scale glide test. Hand launch, controls fixed, unpowered. Upper
fuselage is installed, along with new landing skid. Motor was also
installed, facing backwards for protection. Single hose clamp was used
to attach motor to fuselage tubes.

Surface was semi-smooth dirt. On touchdown, deceleration was very high.
Front of skid seemed to dig in excessively. Motor was ejected out the nose.
No apparent damage to motor. Nose ballast (several wrenches) was partially
ejected. Minor damage to airframe.

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   Test ID:  17
      Date:  2005/03/08 (Tue)
      Time:  20:20
      Wind:  Calm
   Vehicle:  SVC
     Scale:  41 %
  Location:  Pima West

Tested subscale SVC after dark with a lightstick inside the fuselage. The
thin foam walls of the fuselage transmitted enough light so you could see
the fuselage from the outside.




   Chemical lightstick          Smaller lightstick
   attached to fuselage      illustrates approximate
     hatch, as flown             dark appearance

The lightstick was yellow-green, mass 23 g, length 153 mm.

Since only the fuselage was lit up, it was difficult to tell what the roll
angle was. Consequently the vehicle was difficult to control. The flight
lasted about a minute. In spite of control difficulties, the landing was
good, no damage.

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Last updated 2005/04/01 FLM