The separation of the nine prototypes into groups dominated by rotational and translational velocities, respectively, is in agreement with previous conclusions that flies tend to decouple translational and rotational movements by their saccadic flight and gaze strategy, thereby simplifying visual information processing by the nervous system [2], [42].
Overall, 51.3% of survey respondents endorsed none of the four prototypes, 20.6% endorsed one prototype at any level (i.e., a rating of 2 or higher), 14.1% endorsed two prototypes and 13.8% endorsed three or four of the prototypes.
The crashworthy design methodology developped by the LAMIH uses two prototypes: the first one takes place in the first stage of design and is a mock-up using indirect similarity, the second one is the final prototype.
The barrel shape was modified by constructing two prototypes with higher liquid air interface.
In the spring, two prototypes arrived by FedEx.
Originally, the first two prototypes were powered by a 720 hp spark ignition engine, named the SOFAM 12 GSds.
It means that there is one real cluster missing a prototype, and another cluster overcrowded by having two prototypes.
Additionally, its function principle is verified by two prototypes.
The name, "Britannia" was chosen in April 1950 with Britannia 101 the designation for first two prototypes powered by the early series Proteus 625, the follow-up from the 600 series engine that had successfully completed its type trials.
The velocity profile was generated by motion-morphing between two prototypes: Prototype 1 was described by the standard equation of gravitational motion h(t) = h0 – 0.5 gt, where h = height, h0 = initial height, t = time and g = gravitational force (9.8 m/s); and Prototype 2 was a constant velocity vector.
