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aeronewsline :: Accueil :: Histoire :: Aéronefs 1956 à 1965
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Re: North American A-5 Vigilante
par Alun_D Lun 13 Sep 2010, 09:02
Les A-5 Vigilante vus par Wikipedia de langue anglaise
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The North American A-5 Vigilante was a powerful, highly advanced carrier-based supersonic bomber designed for the United States Navy.
Its service in the nuclear strike role to replace the A-3 Skywarrior was very short; however, as the RA-5C, it saw extensive service during the Vietnam War in the tactical strike reconnaissance role.
Prior to the unification of the Navy designation sequence with the Air Force sequence in 1962, it was designated the A3J Vigilante.
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The North American A-5 Vigilante was a powerful, highly advanced carrier-based supersonic bomber designed for the United States Navy.
Its service in the nuclear strike role to replace the A-3 Skywarrior was very short; however, as the RA-5C, it saw extensive service during the Vietnam War in the tactical strike reconnaissance role.
Prior to the unification of the Navy designation sequence with the Air Force sequence in 1962, it was designated the A3J Vigilante.
Alun_D- CLUB
- Messages : 2003
Re: North American A-5 Vigilante
par Alun_D Lun 13 Sep 2010, 09:03
Design and development
In 1953, North American Aviation began a private study for a carrier-based, long-range, all-weather strike bomber, capable of delivering nuclear weapons at supersonic speeds.
This proposal, the NAGPAW (North American General Purpose Attack Weapon) concept, was accepted by the United States Navy, with some revisions, in 1955.
A contract was awarded on 29 August 1956. Its first flight occurred two years later on 31 August 1958 in Columbus, Ohio.
In 1953, North American Aviation began a private study for a carrier-based, long-range, all-weather strike bomber, capable of delivering nuclear weapons at supersonic speeds.
This proposal, the NAGPAW (North American General Purpose Attack Weapon) concept, was accepted by the United States Navy, with some revisions, in 1955.
A contract was awarded on 29 August 1956. Its first flight occurred two years later on 31 August 1958 in Columbus, Ohio.
Alun_D- CLUB
- Messages : 2003
Re: North American A-5 Vigilante
par Alun_D Lun 13 Sep 2010, 09:06
At the time of its introduction, the Vigilante was one of the largest and by far the most complex aircraft to operate from a United States Navy aircraft carrier.
It had a high-mounted swept wing with a boundary-layer control system (blown flaps) to improve low-speed lift, as well as being used instead of conventional ailerons.
It had a high-mounted swept wing with a boundary-layer control system (blown flaps) to improve low-speed lift, as well as being used instead of conventional ailerons.
Alun_D- CLUB
- Messages : 2003
Re: North American A-5 Vigilante
par Alun_D Lun 13 Sep 2010, 09:08
Use of aluminum-lithium alloy for wing skins and titanium for critical structures were also unusual.
The A-5 had two widely-spaced General Electric J79 turbojet engines (the same as used on the F-4 Phantom II fighter), and a single large all-moving vertical stabilizer.
Preliminary design studies had employed twin vertical fin/rudders.
The wings, vertical stabilizer and the nose radome folded for carrier stowage.
The Vigilante had a crew of two seated in tandem, a pilot and a bombardier-navigator (BN)—reconnaissance/attack navigator (RAN) on later recon versions— in individual ejection seats.
The A-5 had two widely-spaced General Electric J79 turbojet engines (the same as used on the F-4 Phantom II fighter), and a single large all-moving vertical stabilizer.
Preliminary design studies had employed twin vertical fin/rudders.
The wings, vertical stabilizer and the nose radome folded for carrier stowage.
The Vigilante had a crew of two seated in tandem, a pilot and a bombardier-navigator (BN)—reconnaissance/attack navigator (RAN) on later recon versions— in individual ejection seats.
Alun_D- CLUB
- Messages : 2003
Re: North American A-5 Vigilante
par Alun_D Lun 13 Sep 2010, 09:15
Despite being designated by the US Navy as a "heavy", the A-5 was surprisingly agile for such a large aircraft, without the drag of bombs or missiles, even escorting fighters found that the clean airframe and powerful engines made the Vigilante very fast at high and low altitudes.
However, its high approach speed and high angle of attack in the landing configuration made returning to the aircraft carrier a challenge for inexperienced or unwary pilots.
However, its high approach speed and high angle of attack in the landing configuration made returning to the aircraft carrier a challenge for inexperienced or unwary pilots.
Alun_D- CLUB
- Messages : 2003
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