Tupolev Tu-160 - Design

Design

The Tu-160 is a variable-geometry wing aircraft, with sweep selectable from 20° to 65°. The aircraft employs a fly-by-wire control system with a blended wing profile and full-span slats are used on the leading edges, with double-slotted flaps on the trailing edges. The variable geometry gives conventional takeoff, and efficient subsonic cruise, while also permitting Mach 2 flight.

The Tu-160 is powered by four Kuznetsov NK-321 afterburning turbofan engines, the most powerful ever fitted to a combat aircraft. Unlike the American B-1B Lancer, which reduced the original Mach 2+ requirement for the B-1A to achieve a smaller radar profile, the Tu-160 retains variable intakes, and is capable of reaching Mach 2 speed at altitude. The NK-321 turbofans are efficient for subsonic cruise, but suboptimal for supersonic flight due to inlet drag.

The Tu-160 is equipped with a probe-and-drogue in-flight refueling system for extended-range missions, although it is rarely used. The Tu-160's internal fuel capacity of 130 tons gives the aircraft a roughly 15-hour flight endurance at a cruise speed of around 850 km/h (Mach 0.77, 530 mph) at 9,145 m (30,003 ft). In February 2008, Tu-160 bombers and Il-78 refueling tankers practiced air refueling during air combat exercise, as well as MiG-31, A-50 and other Russian combat aircraft.

Although the Tu-160 was designed for reduced detectability to both radar and infrared, it is not a stealth aircraft. Nevertheless, Lt. Gen. Igor Khvorov claimed that Tu-160s managed to penetrate the US sector of the Arctic undetected on 25 April 2006, leading to a USAF investigation according to a Russian source.

The Tu-160 has an Obzor-K attack radar in a slightly upturned dielectric radome, and a separate "Sopka" terrain-following radar, which provides fully automatic terrain-following flight at low altitude. The Tu-160 has an electro-optical bombsight. Its electronic warfare suite includes comprehensive active and passive electronic countermeasures (ECM) systems.

The Tu-160 has a crew of four (pilot, co-pilot, bombardier, and defensive systems operator) in K-36DM ejection seats. The pilot has a fighter-style control stick, but the flight instruments are traditional "steam gauge" dials. A crew rest area, a toilet, and a galley are provided for long flights. There is no Head-Up Display (HUD), nor are CRT multi-function displays provided in the original aircraft.

Weapons are carried in two internal bays, each capable of holding 20,000 kg (44,400 lb) of free-fall weapons or a rotary launcher for nuclear missiles; additional missiles may also be carried externally. The aircraft's total weapons load capacity is 40,000 kg (88,185 lb). However, no defensive weapons are provided; the Tu-160 is the first unarmed post-World War II Soviet bomber.

A demilitarized, commercial version of the Tu-160, named Tu-160SK, was displayed at Asian Aerospace in Singapore in 1994 with a model of a small space vehicle named Burlak attached underneath the fuselage. In 1995 Tupolev announced a partnership with the German firm OHB-System to produce the aircraft as a carrier for the launch vehicle; the German government subsequently withdrew funding in 1998.

While similar in appearance to the American B-1 Lancer, the Tu-160 is a different class of combat aircraft, its primary role being a standoff missile platform (strategic missile carrier). The Tu-160 is also larger and faster than the B-1B and has a slightly greater combat range, though the B-1B has a larger combined payload. Another significant difference is that the colour scheme on the B-1B Lancer is usually radar-absorbent black, the Tu-160 is painted with anti-flash white, giving it the nickname among Russian airmen "White Swan".