Refine Your Search

Search Results

Viewing 1 to 5 of 5
Technical Paper

Replacement of Sealed Nickel-Cadmium Batteries on EA-6B Aircraft with Valve Regulated Lead-Acid Batteries

This paper will summarize the details of replacing the EA-6B Sealed Nickel-Cadmium (SNC) batteries in an effort to reduce battery maintenance and battery maintenance costs. A flight evaluation program is presently underway at two locations to validate the proposed change from SNC batteries to Valve Regulated Lead-Acid (VRLA) batteries. The EA-6B aircraft currently uses two 26-volt SNC batteries, military part number (MIL PN) D8565/1-1, and one 24-volt SNC battery, part number MS17334-2. The SNC batteries are scheduled for maintenance every 112 days, which requires removal and replacement of the batteries at the O-level and battery maintenance at the I-level (battery shop). A load check is required every 28 days on the aircraft in accordance with the Maintenance Requirement Card (MRC).
Technical Paper

Replacement of Nickel-Cadmium Battery on F-5 Aircraft with a Valve Regulated Lead-Acid Battery

In the continuing effort to save Fleet Operations and Maintenance (O&M) costs, a united effort was launched to propose the replacement of the Nickel-Cadmium battery on the F-5 aircraft with a valve-regulated, sealed lead-acid battery. The Aging Aircraft IPT (AAIPT) at Naval Air Systems Command, Patuxent River (PAX River), Maryland presented the concept to the Value Engineering group at Defense Supply Center Richmond, Virginia and successfully obtained funding for this and other Aging Aircraft efforts. The AAIPT then approached the Propulsion and Power Division of Naval Air Systems Command (AIR- as the cognizant engineering activity over batteries. AIR- then requested the assistance of Crane Division of Naval Surface Warfare Center (NSWC Crane) to develop a test plan and a Memorandum of Agreement and to obtain flight test authority as well as conduct the flight test.
Technical Paper

Replacement of Sealed Nickel-Cadmium Batteries on Ch-53e and Mh-53e Aircraft with Sealed Lead-Acid Batteries

This paper will summarize the details of replacing the CH-53E and MH-53E crashworthy batteries to improve system reliability, safety of flight and to reduce battery maintenance and battery maintenance costs. A flight evaluation program is presently underway at Marine Corps Air Station (MCAS) New River, North Carolina to validate the proposed change from Sealed Nickel-Cadmium (SNC) batteries to Sealed Lead-Acid (SLA) batteries. Under the sponsorship of the Commander, Naval Air Systems Command the Crane Division, Naval Surface Warfare Center identified a SLA battery as a replacement for the SNC battery currently being used in the CH-53E and MH-53E aircraft. The replacement battery is a direct form, fit, and function replacement for the SNC battery. It is presently planned that the SLA battery will have a one-year inspection period and a replacement cycle of three years.
Technical Paper

Next Generation Li-Ion Technology from SAFT

At the end of 2007 SAFT developed the next generation of power Lithium Ion and delivered first prototypes. This work is funded by US Army TACOM and is continuation of US Air Force AFRL sponsored effort aimed at meeting the needs of both aircraft power as well as emerging Directed Energy applications. Ultra High Power (UHP) Li-ion cells offer unparalleled continuous and pulse power. Additionally the technology is capable of excellent charge acceptance and power delivery at low temperature. These specific characteristics could enable a floating on the bus aviation battery in the near future. The extreme pulse power capability coupled with limited heat generation make the technology a leading candidate for a Directed Energy intermediate energy storage power system.
Journal Article

Prismatic Li-Ion Cell for Unmanned Aircraft

Saft is working on advanced 28V Li-ion batteries for use in NAVY unmanned aircraft applications. This battery employs seven (7) prismatic state-of-the art Li-ion cells connected in series. The battery needs to be less than 40lbs in weight and 600 in3 in volume. This paper presents the performance results of the new prismatic cell. This development is pioneering new technological territories for SAFT since the PL55E cell is the first prismatic cell developed and delivered by SAFT America [1]. The experience gained will be useful and the PL55E cell will be followed by more prismatic cells added to the SAFT Li-ion portfolio. The presentation will give an overall status update of the technology as well as a brief overview of the complete 28V battery.