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Howitzer Ammunition Retrieval and Preparation System (HARPS)

Award Information
Agency: Department of Defense
Branch: Army
Contract: W911NF21P0014
Agency Tracking Number: A205-179-0001
Amount: $199,999.18
Phase: Phase I
Program: SBIR
Solicitation Topic Code: A20-179
Solicitation Number: 20.5
Solicitation Year: 2020
Award Year: 2021
Award Start Date (Proposal Award Date): 2020-11-02
Award End Date (Contract End Date): 2021-03-05
Small Business Information
20 New England Business Center
Andover, MA 01810-1111
United States
DUNS: 073800062
HUBZone Owned: No
Woman Owned: No
Socially and Economically Disadvantaged: No
Principal Investigator
 Alex Moerlein
 (978) 738-8153
Business Contact
 B. David Green
Phone: (978) 689-0003
Research Institution

The United States Army needs to improve the rate of fire in its fleet of self-propelled howitzers. In existing US howitzers, the reloading process is largely manual and only supports a maximum fire rate of 4 rounds per minute (rpm). The availability of fuzed rounds heavily affects the attainable rate of fire – when pre-fuzed shells are expended, the crew must follow an alternate, extended reloading procedure that involves retrieving shells from storage and fuzing them. This causes fire rate to suffer even further, often reaching rates below 1 rpm. The Howitzer Ammunition Retrieval and Preparation System (HARPS) automates the process through which shells and charges are prepared to be fired. In the current method of operations for reloading the howitzer, the shell-fuzing and charge-gathering processes combined account for about 60% of the total time required to fire a single round. By automating and accelerating these lengthy manual processes, HARPS provides a ready-to-fire fuzed shell and proper set of charges every 5 seconds, supporting a fire rate of 12 rpm.

* Information listed above is at the time of submission. *

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