| Piasecki HUP Retriever | |
|---|---|
| Šalies | Jav |
| Vaidmenį | Pagalbinis sraigtasparnis |
| Pirmasis skrydis | 1948 m. kovo mėn. |
| Pastatytas | 339 |
2007 Piasecki H-25 "Army Mule/HUP Retriever" buvo kompaktiškas vieno radialinio variklio, dvigubo persidengimo tandeminio rotoriaus naudingumo sraigtasparnis, kurį 1940-ųjų pabaigoje sukūrė Mortono "Piasecki Helicopter Corporation", Pensilvanijoje, ir pagamintas 1950-ųjų pradžioje. 1956 m. įmonė pakeitė pavadinimą į "Vertol Aircraft Corporation", vėliau 1960 m. ją nusipirko "Boeing Aircraft Company" ir tapo "Boeing-Vertol".
Šaltinis: Piasecki HUP retriveris Vikipedijoje
| Piasecki HUP-3 (H-25A) retriveris vaikšto aplink | |
|---|---|
| Fotografas | Vladimiras Yakubovas |
| Lokalizavimo | Pima oro ir kosmoso muziejus, Tuscon |
| Nuotraukos | 27 |
| Piasecki HUP-2 pasivaikščiojimas | |
|---|---|
| Fotografas | Nežinoti |
| Lokalizavimo | Nežinoti |
| Nuotraukos | 32 |
Taip pat žiūrėkite:
The Compact Tandem Workhorse
2007 Piasecki HUP-3 retriveris (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) |
|---|---|
| Vaidmenį | Search and Rescue (SAR) / Utility Helicopter |
| Crew / Capacity | 2 Pilots / 4-5 Passengers or 3 Litters |
| First Flight (HUP series) | 1948 m. kovo mėn. |
| Jėgainė | 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 Nacionalinis jūrų aviacijos muziejus in Pensacola and the Pima Air & Space Museum in Arizona.
Peržiūrėta: 2669
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