Moderators: richierich, ua900, PanAm_DC10, hOMSaR
Quote: After the maximum braking to a standstill required in the RTO test there must be a 5min wait before fire services are allowed to attend the aircraft. Fire broke out in the port main bogey of the Messier Dowty undercarriage, and several of the Goodrich wheels broke under the stress of increased tyre pressure before the tyres' fuse-plugs could operate. The aircraft was fitted with Michelin's new NZG radial tyres, which are believed to have performed adequately. Debris damaged gear bay doors and the fuselage but not fuel tanks. The stopping distance, however, was within planned performance requirements, says Airbus. By 21 February the company had repaired the undercarriage and flown the aircraft back to Toulouse. Airbus says the wheels have been shown to have an "insufficient strength margin" and will be reinforced. Also, heat-shielding between the brake discs and tyres is to be improved to slow heat transfer. |
Quoting RichardPrice (Reply 2): |
Quoting Airfoilsguy (Reply 1): Thats a closely held secret and we will never know the answer. All Airbus supporters who have seen the video have been sworn to secrecy. All Boeing supporters who saw the video have been shot. |
Quoting Prebennorholm (Reply 4): Has everybody seen the video of the max vertical speed landing test of the DC-9 and the fuselage broke in two? Does somebody have the link? |
Quoting Prebennorholm (Reply 4): Has everybody seen the video of the max vertical speed landing test of the DC-9 and the fuselage broke in two? Does somebody have the link? |
Quoting Prebennorholm (Reply 4): Has everybody seen the video of the max vertical speed landing test of the DC-9 and the fuselage broke in two? Does somebody have the link? |
Quoting Lemurs (Reply 7): That one wasn't so much a test sussing out a failure though...I remember reading the NTSB report on it, and the pilot essentially lost his situational awareness and let his speed and sink rate fall way lower than the test required. The empenage was subjected to something well over 200% of it's design strength, so off it went...I'll see if I can find the link. |
Quoting Prebennorholm (Reply 8): Test pilots often live on the edge, simply because it is their job to demonstrate the edge. On the edge there is very little or no room for error. |
Quoting Prebennorholm (Reply 4): Has everybody seen the video of the max vertical speed landing test of the DC-9 and the fuselage broke in two? |
Quoting Airfoilsguy (Reply 10):
Quoting Prebennorholm (Reply 4): Has everybody seen the video of the max vertical speed landing test of the DC-9 and the fuselage broke in two? Did they survive that?? |
Quoting Airfoilsguy (Reply 10): Did they survive that?? |
Quoting Starlionblue (Reply 11): No fatalities but I believe there were injuries. |
Quoting Meister808 (Reply 12): noticed the hard landing but didn't think anything of it until they stopped |