NDI Principles & Flying Qualities Testing of Modern Combat Aircraft


During the forthcoming 6th Annual ITPS Flight Test Seminar (Dec 14-15, London ON, Canada) I will be delivering a presentation on NDI Principles & Flying Qualities Testing of Modern Combat Aircraft. The presentation will refer to the following:

  • Evolution of FCS for Nonlinear Control
  • Nonlinear Dynamic Inversion structure and Control Allocation
  • F-35 FCS characteristics and FQ testing cases
  • Preparation for FQ testing of modern combat aircraft
  • Challenges and tools
  • FQ Envelope Expansion
  • MIL-STD-1797 and frequency based FQ criteria
  • Evaluation Maneuvers and examples
  • High AoA FQ testing
  • ITPS training approach

The event is open free of charge to SETP and SFTE members of the Canadian chapters.

The event will be capped by a Gala Dinner and Graduation Event featuring Keynote Speaker Brian Binnie and the presentation of diplomas to this year’s graduating classes of test pilots and flight test engineers.

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SFTE 48th Annual Symposium Destin, FL


A great event reached its end with a visit to the Naval Aviation National Museum and Air Force Armament Museum.

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ITPS F-35 Sim ready


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MEIR received

Multi-Engine Instrument Rating received. Next one on the list: CPL.


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SETP Annual Symposium 2017, Anaheim CA


Another year at the biggest flight test symposium, attending great presentations, meeting some exceptional individuals and fully recharging the inspiration batteries. Among other things, I had the opportunity to spend some time with my good friend and PTDI Chief Test Pilot Esther, who recently completed the N219 first flight. So proud of you Esther, see you next year!


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Trace matching for indicated airspeed and altitude

A significant test limitation during a recent check climb test was the lack of indicated airspeed and pressure altitude in the data stream, as well as the lack of outside air temperature (OAT) indication. These limitations were surpassed using a trace matching technique between the GPS altitude and GPS airspeed and the recorded Hp and IAS from the cameras, and meteorological predictions in the test area.
Initially the available GPS/INS data were synchronized with the video of the instrument panel using the popular flight debriefing tool Cloudahoy and data were extracted for 10sec intervals.


Considering the monotonous altitude nature of the check climb, the approximate constant heading and the wings level parts of the flight, trace matching using the synchronized data and video was performed as shown in the figure below.


The benefit of this method was twofold: (i) The resulting altitude relation between tapeline and pressure altitude confirmed the OAT obtained by the test area weather forecast within 1deg C and the resulting ΔV to altitude relation confirmed the forecasted wind profile over the test altitude (ii) From the resulting relations the indicated airspeed and altitude traces could be generated along the stabilized parts of the climb with an airspeed accuracy of 1kt.

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F-35 HMD demo at OPL, Iowa


Short two day trip to University of Iowa on behalf of ITPS, in order to evaluate a Rockwell Collins F-35 HMD setup in an L-29 LVC simulation environment at the Operator Performance Laboratory (OPL). During the flight A/G and A/A scenarios were loaded demonstrating the operation and mode relevant symbology of the F-35 HMD, while in the same time, electrocardiogram (ECG) sensors were providing via telemetry real time assessment of the workload involved in the various phases of the missions. Additionally a hop was performed in an Mi-2 helicopter equipped with a LIDAR generating real-time obstacle cues on the HMD. Pretty cool flights and lots of lessons learnt on HMDs.


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