Bell 525
| Bell 525 | |
|---|---|
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|
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| Type: | helicopter |
| Design country: | |
| Manufacturer: | |
| First flight: |
July 1, 2015 |
| Number of pieces: |
2 |
The Bell 525 is a helicopter under development by the US manufacturer Bell Helicopter .
history
The Bell 525 "Relentless" was presented at the Heli Expo 2012, this type is said to be the largest civil helicopter from Bell Helicopter. The helicopter is in direct competition with the AgustaWestland AW189 and the Eurocopter EC 175 . The first flight took place on July 1, 2015 at the Amarillo plant , certification and delivery are scheduled for 2017. The unit price is around USD 22 million, depending on the equipment.
construction
The helicopter is to be controlled by means of fly-by-wire , which will be supplied by BAE Systems . The cockpit is an ARC Horizon flight deck ( A wareness, R eactive, C ontrol) and have as avionics, a Garmin G5000H provided with touch screen technology. The helicopter, equipped with a five-bladed main rotor and a four-bladed tail rotor, is powered by two General Electric CT7-2F1 engines with FADEC . Six months later than planned, the first prototype of the Bell 525 had its maiden flight on July 1, 2015. The certification process should be completed by 2017. On July 6, 2016, a Bell 525 crashed during a test flight. Both crew members died.
Technical specifications
| Parameter | Data |
|---|---|
| crew | 2 |
| Passengers | 16 |
| length | 19.75 m |
| Rotor diameter | 16.61 m |
| height | 5.54 m |
| payload | 3700 kg |
| Empty mass | ? kg |
| Max. Takeoff mass | 8754 kg |
| Cruising speed | 290 km / h (155 kn) |
| Top speed | 310 km / h (165 kn) |
| Service ceiling | |
| Range | 575 NM (925 km) |
| Engines | two General Electric CT7-2F1 |
Incidents
On July 6, 2016, the first prototype crashed near Italy . Both crew members were killed. When simulating engine failures at high speeds, there was a sharp drop in the rotor speed. This maneuver stimulated an eigenmode of the main rotor. Additional feedback via the pilot ( PIO ) and the AHRS ultimately led to strong, upward vibrations. These became so strong that the rotor blades touched the tail boom, which subsequently broke off and led to an uncontrolled crash.
See also
Web links
Individual evidence
- ↑ star-telegram.com: Bell Helicopter unveils 525 Relentless ( Memento of the original from April 12, 2012 in the Internet Archive ) Info: The archive link was inserted automatically and has not yet been checked. Please check the original and archive link according to the instructions and then remove this notice. , dated February 12, 2012.
- ↑ Archive link ( Memento of the original from July 2, 2015 in the Internet Archive ) Info: The archive link was inserted automatically and has not yet been checked. Please check the original and archive link according to the instructions and then remove this notice.
- ↑ Dominic Perry: VIDEO: Successful first flight for new Bell 525 Relentless . July 2, 2015. Retrieved August 16, 2015.
- ↑ Tony Osborne: Bell Helicopter Completes First Flight Of Model 525 . In: McGraw-Hill (Ed.): Aviation Week & Space Technology . July 1, 2015.
- ↑ Domingo Ramirez: Bell helicopter crashes in Ellis County, two reportedly killed . July 6, 2016. Retrieved July 6, 2016.
- ↑ Bell 525 to fly soon . In: Helicopter International . May 2015.
- ↑ NTSB: NTSB Identification: DCA16FA199. Retrieved October 24, 2018 .
