Dow-UT delivers F-22 RTM spars
DOW-UNITED Technologies Composite Products (Dow-UT) has delivered the first ship-set of 44 sine-wave spars for the Lockheed Martin/Boeing F-22 wing. The spars were produced using an advanced resin-transfer moulding (RTM) process developed by Dow-UT (Flight International, 24-30 January).
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