Tag Archive: Deuce

Oct 12 2017

September Deuce Crash Report & Future Plans

The investigation of the Deuce crashing into the Kerblantic during its last test flight has been concluded. Investigators were once again able to do a complete study on the entire aircraft, with the engines dredged up from the seafloor and both flight recorders intact. Mechanical inspection of the aircraft turned up no signs of flaw, with systems all operating normally and two good engines running without issue up to the moment of impact.

Review of the flight recorders shows that Captain Jeb was initially making a good approach, as he had on two previous flights to land the Deuce safely on the runway, but coming out of base leg onto his final approach when he went to roll the aircraft level he did not apply enough rudder to keep the nose pointing in the direction the plane was headed. This sideslip caused his airspeed to drop, but not dangerously so, he was still traveling above 60m/s approach speed. Jeb applied rudder late, but was able to counteract the sideslip and return the plane to an almost nominal flight path.

Unfortunately the aircraft was still slipping enough that when he then went to lower the landing gear immediately afterwards, the bay doors dropped at an angle into the airstream enough to create a significant increase in drag. This keeled the aircraft over and caused it to plunge almost straight down into the water from a height of 380m, hitting with a speed of 83m/s and a momentary force of 24Gs, which was largely absorbed by the nose cone’s crush core. Still, Jeb suffered a minor concussion as his chair was partially ripped from the floor and his head flung into the instrument panel, knocking him out for a short period.

As the concept of retractable landing gear is still new, it is understandable that Jeb would not have considered the implications of lowering his gear while the plane was in a sideslip, however minor. C7 engineers in the Genesis program have been spending more time experimenting with deploying the landing gear in various flight regimes in the wind tunnel to determine the full range of effects the bay doors and the gear themselves have on the aircraft. Training will be updated accordingly.

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Sep 22 2017

Operations Summary – Week of 9/18/17

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Sep 21 2017

Deuce Flight Trial 5

Captain Jebediah is able to successfully take off in the Deuce after adjustments are made to the elevator controls. While pitch stability is vastly improved, design issues still appear to remain

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Sep 21 2017

Deuce Flight Trial 4

Everyone was excited to see the Deuce take to the skies once again, but unfortunately an oversight during the rebuild did not allow Captain Jebediah to leave the ground on his takeoff attempt

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Sep 18 2017

Deuce Ground Trial 3

After its redesign, the Deuce is ready to get back to flying assuming it can pass the same basic ground trials its been through before, but with both Captain Jebediah & Commander Valentina at the controls

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Aug 22 2017

Deuce Flight Trials Lead to Redesign

The previous week saw the Deuce take to the skies once again for two test flights after spending more than two months being rebuilt since crashing back in June. The first flight was still hampered by over-sensitive controls and after they were dampened still further for the second flight it became apparent that the aircraft was inherently unstable – Captain Jebediah could now feel that it wasn’t him causing the plane to pitch up & down violently (at some points there were momentary forces as high as 7Gs while traveling over 140m/s). This meant that more work on the design of the Deuce’s air frame was needed, and C7 engineers quickly got to work playing around with new models in R&D’s modest wind tunnel, trying all sorts of things like moving the wings forwards, aft, up, down and even trying new tail configurations. After seeing no major changes with tweaks to the aerodynamics (except for a minor but noticeable improvement closing up the tail section) attention was switched to the plane’s mass/lift balance. The center of lift was behind the center of mass, which is good, but the two were fairly close together, which can be unstable. Now that they knew how unstable it could be, efforts were undertaken to shift the CoM further away from the CoL. This was done by moving the engines and fuel tanks further forward on the wings, and finally wind tunnel testing showed a significant improvement in the pitch stability of the aircraft.

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Aug 18 2017

Operations Summary – Week of 8/14/17

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Aug 17 2017

Deuce Flight Trial 3

Captain Jebediah once again takes the Deuce for a spin to see how adjustments that have been made to the controls affect the pitch handling, and also to further investigate its left-roll tendency

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Aug 16 2017

Deuce Flight Trial 2

Captain Jebediah, most familiar with its handling after taking it up last time, flies the rebuilt & redesigned Deuce for its second trial run, fighting instability again but landing properly this time

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Aug 14 2017

Deuce Ground Trial 2

Commander Valentina takes a rebuilt Deuce through its paces on the ground similar to how Jeb tested things back in June so engineers can assure that all is ready once again for flight tests to resume

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