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									Evaluation of Flight Distance
for an Unmanned Aerial Vehicle
with the AMT 450 Gas Turbine Engine




J. Warren, T. Kwon, P. Castelvecchi, J. Miller, D. Gnugnoli
Mechanical Engineering Department
Virginia Tech
This talk presents our modeling of the system,
testing on a mock-up, and preliminary results


Modeling of
 System
                    Testing of
                    Mock-Up
                                                         Preliminary
                                                           Results
                                                 0.016


                                                                 Baseline Response
                                                 0.014

                                                                 Isolation Mount (Elastomer,
                                                                 K=1116 lb/in)
                                                 0.012           Half-Power Cutoff



                                                  0.01
                          Acceleration (volts)




                                                 0.008



                                                 0.006



                                                 0.004



                                                 0.002

2
                                                    0
Our testing setup consisted of five main parts

                                Engine
Throttle Control




                                                [Raven, 2001]




                                         Starter System
                     Measurement
Data Collection      System for Fuel
System
 3
                                                                                                                                 160




                                                                                                        Miles Flown, x (miles)
The most fuel efficient speed for the
                                                                                                                                 140
                                                                                                                                 120
                                                                                                                                 100
                                                                                                                                  80
                                                                                                                                 60
                                                                                                                                 40




maximum range was 230 ft/s
                                                                                                                                 20                                    AMT 450
                                                                                                                                  0
                                                                                                                                       50   100   150    200     250   300       350
                                                                                                                                                  Velocity, V (ft/s)




                                                                  160




                                         Miles Flown, x (miles)
                                                                  140
Fuel Allowed = 75 lbs                                             120
                                                                  100
Speed = 230 ft/s                                                   80
                                                                  60
Fuel Consumed = 74.6 lbs                                          40
                                                                  20                                          AMT 450
                                                                   0
                                                                        50   100   150    200     250   300                                         350
                                                                                   Velocity, V (ft/s)




 Reserve 10 min                                                                                 Hover 10 min at
   at 100 ft/s                                                                                     100 ft/s
                      125 mile range at
    = 5.2 lbs fuel        230 ft/s                                                               = 5.2 lbs fuel
                       = 64.2 lbs fuel


4
Composite materials are ideal
for bipolar plates


Advantages
  Easy to shape
  Light in weight
  Resistant to corrosion


Disadvantages
   Low conductivity
   High cost (at present)


5
In summary, Lissajou patterns and strain gages
measured resonance


Strain gages
    Measured: 19.2 Hz
    Actual:   21.6 Hz




Lissajou pattern
                               below                   above
    Measured:   20.8 Hz
                               resonance       at      resonance
    Actual:     21.6 Hz
                                           resonance



                          Questions?
6

								
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