News and Events


1.   Air data information is a key issue for use onboard aircraft in order to estimate current altitude and airspeed. Such flight parameters may be measured using a variety of different sensors.

May 23rd, 2018


1.   The Global Positioning System (GPS) system is designed so that from any point on the surface of the planet at least four satellites of the GPS constellation are always visible.

May 17th, 2018
1.   One of the basic and most important skills that any human helicopter pilot learns and must practise on a regular basis is the ability to autorotate safely. This is so that in the event of engine or tail rotor failure the aircraft can be safely descended and landed under control. Although there are obviously no human aircrew, for helicopter UAVs there is also a requirement to minimise (or indeed eliminate) any danger to people on the ground and also any damage to the UAV which might be caused by an engine or tail rotor failure.
Mar 27th, 2018

In the very early stages of aviation, control of an aircraft was based purely on visual feedback and sensorial perception: flying ‘by the seat of the pants’. Such instruments as were available in the cockpit were very basic and limited in their capacity. As aircraft complexity has increased, more information and more complex instruments have become available.

Feb 27th, 2018


Altimeters are devices designed to calculate the height of an aircraft above the surface directly below it. This height may be Above Ground Level (AGL) or Above Sea Level (ASL).

Different types of altimeter use different technologies to calculate this height, including pressure-density to altitude relationship and the propagation and reflection of electromagnetic waves etc.

There are four main types of altimeter:

Feb 15th, 2018

New features:

Jan 22nd, 2018

Navigation is a process involving three steps:

  1. Establish the track that needs to be followed (i.e. Flight Plan)
  2. Establish current position relative to the FP
  3. Execute all necessary guidance actions to correct any deviation in position

There are different types of navigation system:

Nov 24th, 2017


One of the biggest challenges facing any cutting-edge Attitude & Heading Reference System / Inertial Navigation System (AHRS/INS) is the ability to perform a mission in a degraded environment. In navigation, dead reckoning is the process of calculating one’s current position by using a previously determined one, and advancing it based upon known or estimated speeds (integrated) over elapsed time and course. Evidently each integration is subject to a cumulative error; the aim therefore is to reduce this error in order to increase precision.

Nov 10th, 2017