AEROCHARGERS IN THE MILITARY
HiPerformance has been working with the military for years supplying high-tech turbochargers and turboexpanders for applications ranging from UAVs (Unmanned Aerial Vehicles) to cryogenic units.
The RQ-7 Shadow is the result of a continued US Army search for an effective battlefield UAV after the cancellation of the RQ-6 Outrider aircraft. AAI Corporation followed up their RQ-2 Pioneer UAV with the similar but refined Shadow 200, and in late 1999 the Army selected the Shadow 200 to fill the tactical UAV requirement, redestinating it the RQ-7. The Army requirement specified a UAV that used a gasoline engine, could carry an electro-optic/infrared imaging sensor turret, and had a minimum range of 31 miles (50 kilometers) with four hour endurance on station. The shadow 200 offered at least twice that range, powered by a 38hp (28.5 kW) rotary engine. The Army requirement dictated that it be able to land within a soccer field.
Each Shadow system includes four aircraft, two ground stations, a launch trailer, and support vehicles for equipment and personnel. With a highly trained platoon the Shadow 200 can be unpacked, fueled, and launched in one hour. A SIGINT payload is in development, and is scheduled for service in 2008. It will swap out with the EO turret. The Army currently does not have planes to arm the Shadow with light munitions.
The Shadow 200 UAV Engine above is fitted with an Aerocharger, researching ways to increase the power and operating altitude. On other rotary engines burning heavy fuel (jet fuel) it was found that 2.5 pounds of boost from an Aerocharger increased power up to nearly 50%. Hi Performance continues to work with the Department of Defense for further increase the performance of various vehicles and machines.
HiPerformance, LLC manufactures a Turboexpander (TBX) which is designed to be used in Cryogenic Equipment. The Turboexpander is an energy removal device which furnishes all refrigeration for the production of liquid oxygen and nitrogen. The Turboexpander housing is made of cast stainless steel and encloses a turbine wheel, nozzle ring (which directs the airflow against the turbine wheel), a compressor wheel which is couple to the turbine by a shaft, ball bearings for the shaft, a tachometer sensor for speed indication and a passive wick lubricated oil system. Located between the turbine wheel and compressor wheel is an insulating plate which prevents the portion of the Turboexpander outside the coldbox from becoming excessively cold, and which also prevents excessive heat leak into the cold, expansion area. Due to the cantilevered shaft design, the bearings remain outside the cold area at essentially ambient temperature and no mechanical seals or active buffer gas seal system is required.
HiPerformance, LLC manufactures the plug assembly below
P/N: 791220 790150 NSN: 3655-01-372-8295
The plug assembly above is part of the cryogenic unit below:
Manufacturer: Pacific Consolidated Ind.
Model: ASU 1.56000- – 540 RPSA
P/N: 790380-001 Rated Capacity: 125 lb/hr LOX @ 5-9 psig
125 lb/hr LIN @ 5-30
1500 SCFH GO2 @ 0-3500
1725 SCFH GN2 @ 0-3500
Process Press.: 150 psig
Inst Air Press: Low 25 psig, High 150 psig
The plants are designed for the production of liquid oxygen and liquid nitrogen at 99.5% purity. In addition, the 1.5 ton per day plants can produce gaseous oxygen and gaseous nitrogen up to 3500 PSIG. The process uses atmospheric air as feed stock. The process first purifies the air then liquefies it for the cryogenic distillation process. The design of the plants is a result of an extensive study to produce an air transportable oxygen/nitrogen generating system that is compatible with the U.S. Air Force pallet system. The plants are self-contained and only electric power is required for operation. The units come complete with charging manifolds.
The 1.5 tons per day plant produces both liquid ad gaseous oxygen and nitrogen. It features Rapid Pressure Swing Absorbers (RPSA) for biological and chemical warfare (BC) protection, a climate controlled operator’s enclosure, an oxygen and nitrogen high-pressure gaseous product pump, a cylinder evacuation vacuum pump, as well as oxygen and nitrogen cylinder charging manifolds. The unit also includes an optional feature, the availability for procuring 99.5% high-purity N2 and O2 at a production rate of 1.25 tons per day.