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aeronewsline :: Accueil :: Histoire :: Aéronefs 1945 à 1955
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Piasecki H-25
par Luftag Lun 11 Juil 2011, 13:12
L'Army Mule et autre HUP de Piasecki vu par Wikipedia.en
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The Piasecki H-25 Army Mule/HUP Retriever was a compact single radial engine, twin overlapping tandem rotor utility [Vous devez être inscrit et connecté pour voir ce lien] developed by the [Vous devez être inscrit et connecté pour voir ce lien] of Morton, Pennsylvania during the late 1940s and produced during the early 1950s.
The company changed its name in the 1956 to Vertol Aircraft Corporation and subsequently was bought by [Vous devez être inscrit et connecté pour voir ce lien] in 1960, and became [Vous devez être inscrit et connecté pour voir ce lien].
[Vous devez être inscrit et connecté pour voir ce lien]
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The Piasecki H-25 Army Mule/HUP Retriever was a compact single radial engine, twin overlapping tandem rotor utility [Vous devez être inscrit et connecté pour voir ce lien] developed by the [Vous devez être inscrit et connecté pour voir ce lien] of Morton, Pennsylvania during the late 1940s and produced during the early 1950s.
The company changed its name in the 1956 to Vertol Aircraft Corporation and subsequently was bought by [Vous devez être inscrit et connecté pour voir ce lien] in 1960, and became [Vous devez être inscrit et connecté pour voir ce lien].
Luftag- CLUB
- Messages : 2639
Re: Piasecki H-25
par Luftag Lun 11 Juil 2011, 15:12
Design and development
The design was a product of a competition by the U.S. Navy in 1945 for a compact utility/rescue helicopter to operate from Navy ships including aircraft carriers, battleships, and cruisers.
The prototype was designated by the Navy as the XHJP-1, and first flew in March [Vous devez être inscrit et connecté pour voir ce lien].
It was selected by the Navy for production, as the HUP-1 in a side-by-side flight evaluation against the Sikorsky XHJS-1.
It entered service with the Navy and [Vous devez être inscrit et connecté pour voir ce lien] from [Vous devez être inscrit et connecté pour voir ce lien].
The design was a product of a competition by the U.S. Navy in 1945 for a compact utility/rescue helicopter to operate from Navy ships including aircraft carriers, battleships, and cruisers.
The prototype was designated by the Navy as the XHJP-1, and first flew in March [Vous devez être inscrit et connecté pour voir ce lien].
It was selected by the Navy for production, as the HUP-1 in a side-by-side flight evaluation against the Sikorsky XHJS-1.
It entered service with the Navy and [Vous devez être inscrit et connecté pour voir ce lien] from [Vous devez être inscrit et connecté pour voir ce lien].
Luftag- CLUB
- Messages : 2639
Re: Piasecki H-25
par Luftag Lun 11 Juil 2011, 15:19
Operational history
Versions of the HUP built for the U.S. Army were designated H-25 Army Mule.
The tandem overlapping rotor configuration was a development by Piasecki and was used in future helicopter designs by the company and successors including the H-21, HRB-1/CH-46, and CH-47.
The design featured two three-bladed, 35-foot-diameter (11 m) rotors in tandem in which blades could be folded for storage in ships’ hangars.
The HUPs were powered by a single Continental R975-46 radial engine, with a take-off rating of 550 hp (410 kW).
To provide rescue without crew assistance, an electrically operated door, available after folding the copilot’s seat forward, opened through which a rescue sling could be lowered from an overhead winch.
Versions of the HUP built for the U.S. Army were designated H-25 Army Mule.
The tandem overlapping rotor configuration was a development by Piasecki and was used in future helicopter designs by the company and successors including the H-21, HRB-1/CH-46, and CH-47.
The design featured two three-bladed, 35-foot-diameter (11 m) rotors in tandem in which blades could be folded for storage in ships’ hangars.
The HUPs were powered by a single Continental R975-46 radial engine, with a take-off rating of 550 hp (410 kW).
To provide rescue without crew assistance, an electrically operated door, available after folding the copilot’s seat forward, opened through which a rescue sling could be lowered from an overhead winch.
Luftag- CLUB
- Messages : 2639
Re: Piasecki H-25
par Luftag Lun 11 Juil 2011, 15:23
The HUP was produced for the Navy in four versions: HUP-1, -2, and -3.
The HUP-2 was the first production helicopter equipped with an auto-pilot.
[Vous devez être inscrit et connecté pour voir ce lien] tested a HUP-2 with a fiberglass hull and outrigger floats for amphibious operations.
In addition to those delivered to the U.S. Navy and Army the HUP/H-25 helicopter was also delivered to the Canadian and French Navies.
A total of 339 aircraft were delivered over the 20-year life of the aircraft.
The [Vous devez être inscrit et connecté pour voir ce lien] H-25 designation was adopted by the other services in [Vous devez être inscrit et connecté pour voir ce lien]. The final units were withdrawn from US service in [Vous devez être inscrit et connecté pour voir ce lien].
It also served with the [Vous devez être inscrit et connecté pour voir ce lien] from [Vous devez être inscrit et connecté pour voir ce lien] to [Vous devez être inscrit et connecté pour voir ce lien].
The HUP-2 was the first production helicopter equipped with an auto-pilot.
[Vous devez être inscrit et connecté pour voir ce lien] tested a HUP-2 with a fiberglass hull and outrigger floats for amphibious operations.
In addition to those delivered to the U.S. Navy and Army the HUP/H-25 helicopter was also delivered to the Canadian and French Navies.
A total of 339 aircraft were delivered over the 20-year life of the aircraft.
The [Vous devez être inscrit et connecté pour voir ce lien] H-25 designation was adopted by the other services in [Vous devez être inscrit et connecté pour voir ce lien]. The final units were withdrawn from US service in [Vous devez être inscrit et connecté pour voir ce lien].
It also served with the [Vous devez être inscrit et connecté pour voir ce lien] from [Vous devez être inscrit et connecté pour voir ce lien] to [Vous devez être inscrit et connecté pour voir ce lien].
Luftag- CLUB
- Messages : 2639
Luftag- CLUB
- Messages : 2639
Re: Piasecki H-25
par Luftag Lun 11 Juil 2011, 15:39
HUP-2
Improved version, powered by a 550 hp (410 kW) Continental R-975-46 piston engine. Later redesignated UH-25B in 1962.
HUP-2S
This designation was given to number of HUP-2s. The HUP-2S was an [Vous devez être inscrit et connecté pour voir ce lien] helicopter, fitted with a dunking sonar equipment.
Improved version, powered by a 550 hp (410 kW) Continental R-975-46 piston engine. Later redesignated UH-25B in 1962.
HUP-2S
This designation was given to number of HUP-2s. The HUP-2S was an [Vous devez être inscrit et connecté pour voir ce lien] helicopter, fitted with a dunking sonar equipment.
Luftag- CLUB
- Messages : 2639
Re: Piasecki H-25
par Luftag Lun 11 Juil 2011, 15:44
HUP-3
Utility transport helicopter for the US Navy, powered by a 550 hp (410 kW) Continental R-975-46A piston engine.
Similar to the H-25A "Army Mule", later redesignated UH-25C in 1962.
Utility transport helicopter for the US Navy, powered by a 550 hp (410 kW) Continental R-975-46A piston engine.
Similar to the H-25A "Army Mule", later redesignated UH-25C in 1962.
Luftag- CLUB
- Messages : 2639
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