Northrop N-9MB | |
|---|---|
| Maa | Yhdysvallat |
| Rooli | Lentävän siiven prototyyppi |
| Ensimmäinen lento | 27. joulukuuta 1942 |
| Rakennettu | 4 |
Nniiden Northrop N-9M oli noin kolmanneksen mittakaavan, 60 jalan jännevälinen kokosiipinen lentokone, jota käytettiin täyden koon, 172 jalan siipien kärkivälin Northrop XB-35: n ja YB-35: n lentävän siiven pitkän kantaman raskaan pommikoneen kehittämiseen. Ensimmäisen kerran vuonna 1942 lentänyt N-9M (M for Model) oli kolmas nelisiipisten Northrop-lentokonemallien suvussa, joka alkoi vuonna 1929, kun Jack Northrop onnistui varhaisissa kokeissa yhdellä työntöpotkurillaan, kaksihäntäisellä, kaksoispuomilla, kaikki stressaantuneella metallisella iholla Northrop Flying Wing X-216H -yksitasoisella ja kymmenen vuotta myöhemmin kaksoisprop N-1M: llä vuosina 1939–1941. Northropin uraauurtava siipinen lentokone johtaisi Northrop-Grummanin monta vuotta myöhemmin lopulta kehittämään edistyneen B-2 Spirit -häivepommikoneen, joka debytoi ilmavoimien varastossa vuonna 1989.
Lähde: Northrop N-9MB Wikipediassa
| Northrop N-9MB flying wing Walk Around | |
|---|---|
| Valokuvaaja | Cees Hendriks |
| Lokalisointi | Ei tietää |
| Valokuvat | 19 |
Katso myös:
| Northrop N9MB Flying Wing Walk Around | |
|---|---|
| Valokuvaajat | Johannes Pahus, Vladimir Jakubov |
| Lokalisointi | Ei tietää |
| Valokuvat | 36 |
| Northrop N9MB Flying Wing Walk Around | |
|---|---|
| Valokuvaaja | Vladimir Jakubov |
| Lokalisointi | Tyynenmeren rannikon unelmakoneet |
| Valokuvat | 47 |
A Scale Model for a Giant Ambition
Nniiden Northrop N-9M was a family of approximately 1/3-scale flying wing aircraft developed to provide flight test data for the massive XB-35 Ja YB-49 bombers. The N-9MB was the fourth and final aircraft in the series, featuring more powerful engines and refined aerodynamics. By eliminating the fuselage and tail surfaces, Jack Northrop aimed to create an aircraft with the absolute minimum of parasitic drag, though the design presented extreme challenges in stability and control for the era.
| Attribute | Technical Specification (N-9MB) |
|---|---|
| Rooli | Experimental Proof-of-Concept Aircraft |
| miehistö | 1 (Pilot) |
| First Flight (N-9M Series) | December 27, 1942 |
| Voimalaitos | 2 × Franklin 0-540-7 eight-cylinder engines |
| Horsepower | 300 hp (224 kW) per engine |
| Siipiväli | 60 feet (18.3 m) |
| Enimmäisnopeus | 258 mph (415 km/h) |
| Rakentaminen | Wood (Wings) and Welded Steel Tubing (Center section) |
Engineering the Pure Wing
- The “Elevon” Control System: Without a tail, the N-9MB used elevons—surfaces that combined the functions of elevators (pitch) and ailerons (roll). These were located on the trailing edge of the wing.
- Split Flap Rudders: For yaw control (steering left/right), the aircraft utilized “clamshell” or split flaps at the wingtips. Opening one side created drag that pulled the wing in that direction, acting as a rudder without the need for a vertical fin.
- Pusher Configuration: To keep the airflow over the wing as “clean” as possible, the engines were mounted internally with the propellers at the rear, pushing the aircraft forward.
- Leading-Edge Slots: To combat the inherent stability issues of a flying wing at low speeds, the N-9MB featured fixed slots on the leading edges of the wingtips to prevent tip-stalling.
The Legacy of a Visionary
- Data for the Bombers: The N-9M program successfully proved that a large flying wing could be flown, though it revealed that the design was highly sensitive to the center of gravity and prone to “tumbling” if pushed beyond its limits.
- The Yellow Paint: The N-9MB was famously painted in a high-visibility yellow and blue scheme, making it easier for ground observers to track its orientation during complex test maneuvers.
- The B-2 Spirit Connection: Decades later, when the B-2 Stealth Bomber was designed, engineers used the flight data and concepts pioneered by the N-9M. When Jack Northrop was shown a model of the B-2 shortly before his death, he reportedly wrote on a pad: “Now I know why God kept me alive for 25 years.”
- The Final Loss: For many years, the N-9MB was the only flying example of a Northrop flying wing in the world, maintained by the Planes of Fame Air Museum. Tragically, it was lost in a crash in 2019, leaving no airworthy examples of this historic series remaining.
Katsottu : 1512
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