Piasecki HUP Retriever - Φωτογραφίες & Βίντεο

Piasecki HUP Retriever
Χώρα	Ηπα
Ρόλο	Βοηθητικό ελικόπτερο
Πρώτη πτήση	Μάρτιος 1948
Χτισμένο	339

Teh Πιασέκι H-25 Το Army Mule / HUP Retriever ήταν ένα συμπαγές μονό ακτινικό κινητήρα, διπλό επικαλυπτόμενο ελικόπτερο κοινής ωφέλειας διπλού ρότορα που αναπτύχθηκε από την Piasecki Helicopter Corporation του Morton, Pennsylvania στα τέλη της δεκαετίας του 1940 και παρήχθη στις αρχές της δεκαετίας του 1950. Η εταιρεία άλλαξε το όνομά της το 1956 σε Vertol Aircraft Corporation και στη συνέχεια αγοράστηκε από την Boeing Aircraft Company το 1960 και έγινε Boeing-Vertol.

Πηγή: Piasecki HUP Ριτρίβερ στη Βικιπαίδεια

Piasecki HUP-3 (H-25A) Retriever με τα πόδια γύρω από
Φωτογράφος	Βλαντιμίρ Γιακούμποφ
Εντοπισμού	Μουσείο Αέρα και Διαστήματος Pima, Τοσκόν
Φωτογραφίες	27

Piasecki HUP-3 Retriever 01

Piasecki HUP-3 Retriever 02

Piasecki HUP-3 Retriever 03

Piasecki HUP-3 Retriever 04

Piasecki HUP-3 Retriever 05

Piasecki HUP-3 Retriever 07

Piasecki HUP-3 Retriever 06

Piasecki HUP-3 Retriever 08

Piasecki HUP-3 Retriever 09

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Πιασέτκι HUP-2 Περπατήστε
Φωτογράφος	Αγνοώ
Εντοπισμού	Αγνοώ
Φωτογραφίες	32

Πιασέκι HUP-2

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The Compact Tandem Workhorse

Teh Πιασέτκι HUP-3 Ριτρίβερ (known in the Army as the H-25 Army Mule) was a compact tandem-rotor helicopter designed specifically for the tight confines of aircraft carrier decks. By placing the rotors in a tandem configuration—one at the front and one at the rear—Piasecki eliminated the need for a tail rotor, which allowed the aircraft to be shorter and more stable in crosswinds. The HUP-3 was the refined version of the series, primarily serving in search and rescue (SAR) and utility roles during the early 1950s.

Attribute	Technical Specification (HUP-3)
Ρόλο	Search and Rescue (SAR) / Utility Helicopter
Crew / Capacity	2 Pilots / 4-5 Passengers or 3 Litters
First Flight (HUP series)	Μάρτιος 1948
Πλάστης ισχύος	1 × Continental R-975-46A radial engine
Horsepower	550 hp (410 kW)
Maximum Speed	105 mph (169 km/h)
Rotor Diameter	35 ft 0 in (10.67 m) each
Length (Rotors turning)	56 ft 11 in (17.35 m)

Engineering Innovations and Tandem Flight

Overlapping Rotors: To keep the fuselage as short as possible for carrier elevators, the front and rear rotors were designed to overlap. They were synchronized via a drive shaft to ensure the blades never collided.
No Tail Rotor Advantage: Because the two rotors counter-rotated, they cancelled out each other’s torque. This meant all engine power went toward lift and thrust, making the HUP series very efficient for its size and exceptionally stable during hovering.
The Rescue Hatch: The HUP-3 featured a large rectangular hatch in the floor of the cabin. A rescue hoist was mounted directly above it, allowing the crew to lift a person straight up into the center of the aircraft while in a hover.
Canted Vertical Fins: Early models lacked the large vertical fins seen on the HUP-3. These “end plates” on the rear pylon were added to improve directional stability during high-speed forward flight.

Service History and Variants

Carrier Plane Guard: Before the HUP, destroyers often followed carriers to pick up downed pilots. The HUP-3 allowed the helicopter to act as the “Plane Guard,” hovering near the carrier during flight ops to provide immediate rescue capability.
Army “Mule”: The Army version, the H-25A Army Mule, featured power-boosted controls and a reinforced floor for cargo. However, the Army found the tandem design less suited for field operations than the Navy did for sea duty.
All-Metal Blades: The HUP-3 was among the first to benefit from all-metal rotor blades, which were far more durable in the humid, salty conditions of naval service than earlier wooden or fabric-covered versions.
Preservation: Several HUP Retrievers are preserved in museums today, including the Εθνικό Μουσείο Ναυτικής Αεροπορίας in Pensacola and the Pima Air & Space Museum in Arizona.