Chevrokian Aerospace CA1100

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CA1100 Sigrún
Royal Cottish Air Force CA1100-100KC
Type	Supersonic transport
National origin	Chevrokia
Manufacturer	Chevrokian Aerospace
Maiden flight	2001
Introduction	2002
Status	Active
Primary user	See Users
Number built	Several
Unit cost	$410 million+

The Chevrokian Aerospace CA1100 "Sigrún" is a narrow-body supersonic passenger airliner or supersonic transport (SST), designed and manufactured by Chevrokian Aerospace. The CA1100 has a passenger capacity of 57-88 passengers, depending on configuration, a range of up to 12,070 km (7,500 mi), and a cruise speed of above Mach 3.

Contents 1 Background 2 Design 3 Operational History 4 Variants 4.1 Civilian 4.2 Government 5 Operators 5.1 Military 5.2 Civilian 6 Specifications (CA1100-100) 6.1 General characteristics 6.2 V-speeds 6.3 Other Performance 7 Notes

Background

The earliest studies in Chevrokia on the feasibility of an SST began in 1963, initiated by NAME, a predecessor company of Chevrokian Aerospace. However, in 1966, the coalition Chevrokian government under President Ole Kittelsen initiated legislation which banned the operation of SSTs, citing that their sonic booms would be damaging to the welfare of the average Chevrokian. The ban took effect within all Chevrokian districts, which meant that the only part of Chevrokia that SSTs could legally operate in was the fledgling New Båhus colony. Because of this, NAME decided not to progress beyond design studies.

It wasn't until the 1990s when the Liberal Party administrations of Trygve Pedersen and Olav Jagland removed the restrictions upon SSTs that serious design studies (with intent to lead to production aircraft) were restarted.

Design

The general design of the CA1100, as a high speed aircraft, has a long and slender fuselage, large delta wings, twin vertical stabilizers, and large forward canards. The CA1100, like the bomber design it was based upon, takes advantage of compression lift to reduce the lift-induced drag on the aircraft, and thus allow it to operate more efficiently. The compression lift originates from a shockwave produced by the splitter at the tip of the engine intake, which travels just inside of the wing leading edge at design speeds (above Mach 3.1), on the underside of the wings. The increased pressure across the shockwave results in increased lift, reducing the lift necessary from the wings themselves, and therefore reducing drag. To take advantage of compression lift, the CA1100 was required to have airfoils with a sharp leading edge, which reduces drag when subjected to supersonic airflow.

The major advantage of compression lift is to allow greatly increased efficiency, even at high speed; in fact, the CA1100 is more fuel efficient at speeds above Mach 3.1 than anywhere below. The disadvantage of this, though, is that the CA1100 is often restricted to routes where sustained supersonic flight is feasible or legal, which generally includes trans-oceanic flights and flights over some sparsely populated territories. In addition, the close grouping of the four engines, which are combined-cycle turbofan/ramjet, means that increased separation with other aircraft, especially trailing aircraft, is required by many air traffic control stations due to the danger of severe wake turbulence.

The passenger cabin of the CA1100 is somewhat cramped compared to even smaller subsonic airliners, and as a result, allows for a seating configuration (in all business class) of 2-2 at the wider front of the cabin, to 1-2 at the rear of the cabin. At some airports, CA1100 operation necessitates the use of braking parachutes, which is unusual for civilian aircraft.

Operational History

The amount of concern with the entry of service of the Sigrún was relatively small; the Valkyrie II had already been in service for just over a decade with no major design problems. The first passenger carrying flight was on June 4, 2002, carrying the new Chevrokian consul and staff to the Clandonian Virgin Islands; a flight which lasted just 2 hrs 25 min. The first commercial flight was on June 17 of the same year; on Chevrokian Airways' Duntåvsbyen-Rostov route.

Variants

Civilian

• Dash 100 - Standard production passenger version.
  • Dash 100 Freighter - Specially configured cargo version, in limited use for transporting priority mail and time-sensitive shipments.

Government

• CA1100-100KC - Kongelige Cottiske (Royal Cottish) variant, constructed in limited numbers to serve as a VIP transport for the Cottish government.
• CA1100-100SF - Sjevråkiske Flyvåpen (Chevrokian air force) variant, constructed in moderate numbers to serve as a VIP transport for Chevrokian political and military leaders. Used most prominently as the transport for the President of Chevrokia since 2004.

Operators

Military

•  Akimonad
  • Akimonadi Imperial Air Force
•  Chevrokia
  • Chevrokian Republic Air Force
•  Clandonia
  • Royal Clandonian Air Force
•  Cotland
  • Royal Cottish Air Force (x260)
•  Prestonia
  • Armée de l'Air Prestonaise

Civilian

•  Akimonad
  • Akimonadi Overseas Airways
  • Plan9 Airways
•  Chevrokia
  • Chevrokian Airways
  • Chevrokian Havenic Airlines (Sjevråkiske Haveniske Flyselskap)
  • Chevrokian Letter Mail Company (Det Sjevråkiske Brevpostselskap)
•  Clandonia
  • Imperial Clandonian Airways
•  Cotland
  • CotAir
•  Prestonia
  • Société Air Prestonais

Specifications (CA1100-100)

General characteristics

• Crew: 2 pilots, 2-3 flight attendants
• Passengers:
  • Single Class (First Class): 57 passengers
  • Single Class (Business Class): 88 passengers
• Length: 64.01 m (210 ft 0 in)
• Wingspan: 32.00 m (105 ft 0 in)
• Height: 9.45 m (31 ft 0 in)
• Wing area: 584.92 m² (6,296 ft²)
• Airfoil: Hexagonal; 0.30 Hex modified root, 0.70 Hex modified tip
• Empty weight: 102,058 kg (225,000 lbs)
• Max takeoff weight: 263,084 kg (580,000 lbs)
• Powerplant: 4 x SFF Motorfabrikk RTF-77A combined-cycle low-bypass turbofan/ramjet
  • Dry thrust: 143.23 kN (32,200 lb_f) each
  • Thrust with afterburner: 242.43 kN (54,500 lb_f) each

V-speeds

• Stall, Landing Config (V_so): 150 kias
• Stall, Clean (V_s): 170 kias
• Decision Speed (V₁): 178 kias
• Rotation Speed (V_r): 193 kias
• Safety Speed (V₂): 203 kias
• Landing Gear Down (V_le): 256 kias
• Flaps Extended (V_fe): 295 kias
• Refueling Speed (V_fuel): 270 - 290 kias
• Cruising Speed (V_c): Mach 3.10 @ FL720
• Max Cruise Speed (V_no): Mach 3.25 @ FL720
• Do Not Exceed (V_ne): Mach 3.50 @ FL720
• Landing Speed (V_REF): 175 - 190 kias

Other Performance

• Typical cruise altitude: FL610 - FL740 (18,590 - 22,560 m)
• Service ceiling: 23,320 m (76,500 ft)
• Absolute ceiling: 24,380 m (80,000 ft)^[1]
• Typical range: 12,070 km (7,500 miles)
• Rate of climb: 762 m/min (2,500 ft/min)^[1]
• Rate of descent: 762 m/min (2,500 ft/min)^[1]
• Wing loading: 449.77 kg/m² (92.12 lbs/ft²)
• Thrust/weight: 0.376

Notes