retracting forward造句

• A tricycle undercarriage was fitted, with the nosewheel retracting forwards.
• The fin and rudder together were trapezoidal, with a T tail and monowheel, fitted with a brake, and a co-retracting forward skid.
• The landing gear was to consist of a retractable tricycle gear, with the main gear swiveling aft and nose wheel retracting forward to act as a docking bumper on the nose.
• The undercarriage options considered for the design included either a fully retracting conventional or nosewheel landing gear, with main gear assemblies that possessed twinned main wheels on each unit, retracting forward ( for the nosewheel version, rearwards for a conventional gear arrangement ) into the inner engine nacelles.