It was the first twin jet airliner in the west with a T-tail and engines attached to the rear fuselage. Its nose is based on the DC‑8, without the air intakes at the sides of the nose, but still with the single eyebrow window on each side. Also, the nose gear is more to the front.

Finally, it has nose strakes, mounted above and to the rear of the nose gear. Highlighted by the sun in the photo above. Any DC-9, MD-80, etc that has nose strakes has ones that are identical to the DC-9-50 which introduced them. Here’s a view showing how far …

The McDonnell Douglas DC-9 is an American five-abreast, single-aisle aircraft designed by the Douglas Aircraft Company. It was initially produced as the Douglas DC-9 prior to August 1967, after which point the company had merged with McDonnell Aircraft …

2021年8月19日 · The DC-9-80 (marketed as the "MD-80") has, mounted to its nose gear, what I presume to be a debris deflector (a sled-shaped device to keep the nose gear from kicking up pieces of gravel or asphalt or zombie hands that could dent or puncture the fuselage or wings or get sucked into an engine).

2004年9月13日 · Not sure about previous versions of the DC9, but the MD80 series has spray deflectors because chined tires would not fit in the nose wheel well. Is anyone able to explain how the chines actually work? Simply put the weight on a tire presses water out from underneath it.

The DC-9 configuration has enough nose-down pitching moment capability to eliminate the possibility of locked-in deep stall. An analog simulator was used successfully to interpret extensive deep-stall wind-tunnel data.

Nose strakes are currently employed on a number of McDonnell-Douglas commercial transports including their DC-9 aircraft. Since a scale model of a DC-9 fuselage and wing configuration was available for testing, this model was chosen for the research project.

First I had to get my hands on two of the only available DC-9 kit in 1/144 scale, the Airfix DC- 9-30s. Fortunately, this kit was recently re-released in KLM markings and was available at Venture

graphs were made of a Boeing 727 and a McDonnell-Douglas DC-9 (see Figs. 2 through 7). The landing gear arrangement in both aircraft is seen to be quite similar. Since the measurements were made on actual service aircraft, and not taken from detailed engineering drawings, the information given must be viewed as approximate.

The Refan airplane demonstrated flight characteristics similar to the production DC-9-30 and satisfied airworthiness requirements. Flyover noise levels were determined for the DC-9 Refan and the DC-9 C-9A airplane for takeoff and landing conditions.